llvmPackages_9: remove due to age

2024-04-08 21:43:21 -07:00 · 2024-04-08 21:43:21 -07:00 · b1ef46706f
commit b1ef46706f
parent 886dd8d2fa
33 changed files with 21 additions and 2834 deletions
--- a/pkgs/applications/editors/jupyter-kernels/xeus-cling/default.nix
+++ b/pkgs/applications/editors/jupyter-kernels/xeus-cling/default.nix
@ -3,7 +3,7 @@
 , cling
 , fetchurl
 , lib
-, llvmPackages_9
+, llvmPackages_13
 , makeWrapper
 , runCommand
 , stdenv
--- a/pkgs/applications/editors/jupyter-kernels/xeus-cling/xeus-cling.nix
+++ b/pkgs/applications/editors/jupyter-kernels/xeus-cling/xeus-cling.nix
@ -5,7 +5,7 @@
 , fetchFromGitHub
 , gcc
 , git
-, llvmPackages_9
+, llvmPackages_13
 # Libraries
 , argparse
 , cling
@ -60,7 +60,7 @@ clangStdenv.mkDerivation rec {
    cling.unwrapped
    cppzmq
    libuuid
-    llvmPackages_9.llvm
+    llvmPackages_13.llvm
    ncurses
    openssl
    pugixml
@ -75,6 +75,15 @@ clangStdenv.mkDerivation rec {
    "-DCMAKE_BUILD_TYPE=Debug"
  ];

+  postPatch = ''
+    substituteInPlace src/xmagics/executable.cpp \
+      --replace "getDataLayout" "getDataLayoutString"
+    substituteInPlace src/xmagics/execution.cpp \
+      --replace "simplisticCastAs" "castAs"
+    substituteInPlace src/xmime_internal.hpp \
+      --replace "code.str()" "code.str().str()"
+  '';
+
  dontStrip = debug;

  meta = {
--- a/pkgs/build-support/cc-wrapper/default.nix
+++ b/pkgs/build-support/cc-wrapper/default.nix
@ -562,11 +562,6 @@ stdenv.mkDerivation {
      echo "-isystem ${getDev libcxx}/include/c++/v1" >> $out/nix-support/libcxx-cxxflags
      echo "-stdlib=libc++" >> $out/nix-support/libcxx-ldflags
    ''
-    # can remove once LLVM9 and LLVM11 are dropped from nixpkgs
-    + optionalString (libcxx.isLLVM or false && lib.versionOlder (lib.getVersion libcxx) "12" && libcxx ? cxxabi.libName) ''
-      echo "-isystem ${lib.getDev libcxx.cxxabi}/include/c++/v1" >> $out/nix-support/libcxx-cxxflags
-      echo "-l${libcxx.cxxabi.libName}" >> $out/nix-support/libcxx-ldflags
-    ''

    ##
    ## Initial CFLAGS
--- a/pkgs/development/compilers/llvm/9/clang/HIP-use-PATH-9.patch
+++ b/pkgs/development/compilers/llvm/9/clang/HIP-use-PATH-9.patch
@ -1,80 +0,0 @@
-From 7147e9774c74abcd1d6db24e24d0fd989c2b97dd Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Holger=20W=C3=BCnsche?= <holger.o.wuensche@t-online.de>
-Date: Tue, 21 Jan 2020 19:52:04 +0100
-Subject: [PATCH] [HIP] use GetProgramPath for executable discovery
-
-This change replaces the manual building of executable paths
-using llvm::sys::path::append with GetProgramPath.
-This enables adding other paths in case executables reside
-in different directories and makes the code easier to read.
-
-Differential Revision: https://reviews.llvm.org/D72903
---
- clang/lib/Driver/ToolChains/HIP.cpp | 23 ++++++++---------------
- 1 file changed, 8 insertions(+), 15 deletions(-)
-
-diff --git a/lib/Driver/ToolChains/HIP.cpp b/lib/Driver/ToolChains/HIP.cpp
-index 2ec97e798fd..735c302debb 100644
--- a/lib/Driver/ToolChains/HIP.cpp
-+++ b/lib/Driver/ToolChains/HIP.cpp
-@@ -66,9 +66,8 @@ const char *AMDGCN::Linker::constructLLVMLinkCommand(
-   const char *OutputFileName =
-       C.addTempFile(C.getArgs().MakeArgString(TmpName));
-   CmdArgs.push_back(OutputFileName);
-  SmallString<128> ExecPath(C.getDriver().Dir);
-  llvm::sys::path::append(ExecPath, "llvm-link");
-  const char *Exec = Args.MakeArgString(ExecPath);
-+  const char *Exec =
-+      Args.MakeArgString(getToolChain().GetProgramPath("llvm-link"));
-   C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
-   return OutputFileName;
- }
-@@ -114,9 +113,8 @@ const char *AMDGCN::Linker::constructOptCommand(
-   const char *OutputFileName =
-       C.addTempFile(C.getArgs().MakeArgString(TmpFileName));
-   OptArgs.push_back(OutputFileName);
-  SmallString<128> OptPath(C.getDriver().Dir);
-  llvm::sys::path::append(OptPath, "opt");
-  const char *OptExec = Args.MakeArgString(OptPath);
-+  const char *OptExec =
-+      Args.MakeArgString(getToolChain().GetProgramPath("opt"));
-   C.addCommand(llvm::make_unique<Command>(JA, *this, OptExec, OptArgs, Inputs));
-   return OutputFileName;
- }
-@@ -156,9 +154,7 @@ const char *AMDGCN::Linker::constructLlcCommand(
-   const char *LlcOutputFile =
-       C.addTempFile(C.getArgs().MakeArgString(LlcOutputFileName));
-   LlcArgs.push_back(LlcOutputFile);
-  SmallString<128> LlcPath(C.getDriver().Dir);
-  llvm::sys::path::append(LlcPath, "llc");
-  const char *Llc = Args.MakeArgString(LlcPath);
-+  const char *Llc = Args.MakeArgString(getToolChain().GetProgramPath("llc"));
-   C.addCommand(llvm::make_unique<Command>(JA, *this, Llc, LlcArgs, Inputs));
-   return LlcOutputFile;
- }
-@@ -172,9 +168,7 @@ void AMDGCN::Linker::constructLldCommand(Compilation &C, const JobAction &JA,
-   // The output from ld.lld is an HSA code object file.
-   ArgStringList LldArgs{
-       "-flavor", "gnu", "-shared", "-o", Output.getFilename(), InputFileName};
-  SmallString<128> LldPath(C.getDriver().Dir);
-  llvm::sys::path::append(LldPath, "lld");
-  const char *Lld = Args.MakeArgString(LldPath);
-+  const char *Lld = Args.MakeArgString(getToolChain().GetProgramPath("lld"));
-   C.addCommand(llvm::make_unique<Command>(JA, *this, Lld, LldArgs, Inputs));
- }
- 
-@@ -206,9 +200,8 @@ void AMDGCN::constructHIPFatbinCommand(Compilation &C, const JobAction &JA,
-       Args.MakeArgString(std::string("-outputs=").append(OutputFileName));
-   BundlerArgs.push_back(BundlerOutputArg);
- 
-  SmallString<128> BundlerPath(C.getDriver().Dir);
-  llvm::sys::path::append(BundlerPath, "clang-offload-bundler");
-  const char *Bundler = Args.MakeArgString(BundlerPath);
-+  const char *Bundler = Args.MakeArgString(
-+      T.getToolChain().GetProgramPath("clang-offload-bundler"));
-   C.addCommand(llvm::make_unique<Command>(JA, T, Bundler, BundlerArgs, Inputs));
- }
- 
-- 
-2.23.1
-
--- a/pkgs/development/compilers/llvm/9/clang/compiler-rt-baremetal.patch
+++ b/pkgs/development/compilers/llvm/9/clang/compiler-rt-baremetal.patch
@ -1,53 +0,0 @@
-Index: lib/Driver/ToolChains/BareMetal.cpp
-===================================================================
--- a/lib/Driver/ToolChains/BareMetal.cpp
-+++ b/lib/Driver/ToolChains/BareMetal.cpp
-@@ -157,7 +157,7 @@
- void BareMetal::AddLinkRuntimeLib(const ArgList &Args,
-                                   ArgStringList &CmdArgs) const {
-   CmdArgs.push_back(Args.MakeArgString("-lclang_rt.builtins-" +
-                                       getTriple().getArchName() + ".a"));
-+                                       getTriple().getArchName()));
- }
- 
- void baremetal::Linker::ConstructJob(Compilation &C, const JobAction &JA,
-Index: test/Driver/baremetal.cpp
-===================================================================
--- a/test/Driver/baremetal.cpp
-+++ b/test/Driver/baremetal.cpp
-@@ -13,7 +13,7 @@
- // CHECK-V6M-C-NEXT: "{{[^"]*}}ld{{(\.(lld|bfd|gold))?}}{{(\.exe)?}}" "{{.*}}.o" "-Bstatic"
- // CHECK-V6M-C-SAME: "-L[[RESOURCE_DIR:[^"]+]]{{[/\\]+}}lib{{[/\\]+}}baremetal"
- // CHECK-V6M-C-SAME: "-T" "semihosted.lds" "-Lsome{{[/\\]+}}directory{{[/\\]+}}user{{[/\\]+}}asked{{[/\\]+}}for"
-// CHECK-V6M-C-SAME: "-lc" "-lm" "-lclang_rt.builtins-armv6m.a"
-+// CHECK-V6M-C-SAME: "-lc" "-lm" "-lclang_rt.builtins-armv6m"
- // CHECK-V6M-C-SAME: "-o" "{{.*}}.o"
- 
- // RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
-@@ -35,7 +35,7 @@
- // CHECK-V6M-DEFAULTCXX: "{{[^"]*}}ld{{(\.(lld|bfd|gold))?}}{{(\.exe)?}}" "{{.*}}.o" "-Bstatic"
- // CHECK-V6M-DEFAULTCXX-SAME: "-L{{[^"]*}}{{[/\\]+}}lib{{(64)?}}{{[/\\]+}}clang{{[/\\]+}}{{.*}}{{[/\\]+}}lib{{[/\\]+}}baremetal"
- // CHECK-V6M-DEFAULTCXX-SAME: "-lc++" "-lc++abi" "-lunwind"
-// CHECK-V6M-DEFAULTCXX-SAME: "-lc" "-lm" "-lclang_rt.builtins-armv6m.a"
-+// CHECK-V6M-DEFAULTCXX-SAME: "-lc" "-lm" "-lclang_rt.builtins-armv6m"
- // CHECK-V6M-DEFAULTCXX-SAME: "-o" "{{.*}}.o"
- 
- // RUN: %clangxx -no-canonical-prefixes %s -### -o %t.o 2>&1 \
-@@ -48,7 +48,7 @@
- // CHECK-V6M-LIBCXX: "{{[^"]*}}ld{{(\.(lld|bfd|gold))?}}{{(\.exe)?}}" "{{.*}}.o" "-Bstatic"
- // CHECK-V6M-LIBCXX-SAME: "-L{{[^"]*}}{{[/\\]+}}lib{{(64)?}}{{[/\\]+}}clang{{[/\\]+}}{{.*}}{{[/\\]+}}lib{{[/\\]+}}baremetal"
- // CHECK-V6M-LIBCXX-SAME: "-lc++" "-lc++abi" "-lunwind"
-// CHECK-V6M-LIBCXX-SAME: "-lc" "-lm" "-lclang_rt.builtins-armv6m.a"
-+// CHECK-V6M-LIBCXX-SAME: "-lc" "-lm" "-lclang_rt.builtins-armv6m"
- // CHECK-V6M-LIBCXX-SAME: "-o" "{{.*}}.o"
- 
- // RUN: %clangxx -no-canonical-prefixes %s -### -o %t.o 2>&1 \
-@@ -61,7 +61,7 @@
- // CHECK-V6M-LIBSTDCXX: "{{[^"]*}}ld{{(\.(lld|bfd|gold))?}}{{(\.exe)?}}" "{{.*}}.o" "-Bstatic"
- // CHECK-V6M-LIBSTDCXX-SAME: "-L{{[^"]*}}{{[/\\]+}}lib{{(64)?}}{{[/\\]+}}clang{{[/\\]+}}{{.*}}{{[/\\]+}}lib{{[/\\]+}}baremetal"
- // CHECK-V6M-LIBSTDCXX-SAME: "-lstdc++" "-lsupc++" "-lunwind"
-// CHECK-V6M-LIBSTDCXX-SAME: "-lc" "-lm" "-lclang_rt.builtins-armv6m.a"
-+// CHECK-V6M-LIBSTDCXX-SAME: "-lc" "-lm" "-lclang_rt.builtins-armv6m"
- // CHECK-V6M-LIBSTDCXX-SAME: "-o" "{{.*}}.o"
- 
- // RUN: %clangxx -no-canonical-prefixes %s -### -o %t.o 2>&1 \
--- a/pkgs/development/compilers/llvm/9/clang/default.nix
+++ b/pkgs/development/compilers/llvm/9/clang/default.nix
@ -1,140 +0,0 @@
-{ lib, stdenv, llvm_meta, fetch, substituteAll, cmake, libxml2, libllvm, version, clang-tools-extra_src, python3
-, buildLlvmTools
-, fixDarwinDylibNames
-, enableManpages ? false
-, enablePolly ? false # TODO: get this info from llvm (passthru?)
-}:
-
-let
-  self = stdenv.mkDerivation ({
-    pname = "clang";
-    inherit version;
-
-    src = fetch "clang" "0ls2h3iv4finqyflyhry21qhc9cm9ga7g1zq21020p065qmm2y2p";
-
-    unpackPhase = ''
-      unpackFile $src
-      mv clang-${version}* clang
-      sourceRoot=$PWD/clang
-      unpackFile ${clang-tools-extra_src}
-      mv clang-tools-extra-* $sourceRoot/tools/extra
-    '';
-
-    nativeBuildInputs = [ cmake python3 ]
-      ++ lib.optional enableManpages python3.pkgs.sphinx
-      ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
-
-    buildInputs = [ libxml2 libllvm ];
-
-    cmakeFlags = [
-      "-DCMAKE_CXX_FLAGS=-std=c++11"
-      "-DCLANGD_BUILD_XPC=OFF"
-      "-DLLVM_ENABLE_RTTI=ON"
-    ] ++ lib.optionals enableManpages [
-      "-DCLANG_INCLUDE_DOCS=ON"
-      "-DLLVM_ENABLE_SPHINX=ON"
-      "-DSPHINX_OUTPUT_MAN=ON"
-      "-DSPHINX_OUTPUT_HTML=OFF"
-      "-DSPHINX_WARNINGS_AS_ERRORS=OFF"
-    ] ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
-      "-DLLVM_TABLEGEN_EXE=${buildLlvmTools.llvm}/bin/llvm-tblgen"
-      "-DCLANG_TABLEGEN=${buildLlvmTools.libclang.dev}/bin/clang-tblgen"
-    ] ++ lib.optionals enablePolly [
-      "-DWITH_POLLY=ON"
-      "-DLINK_POLLY_INTO_TOOLS=ON"
-    ];
-
-    patches = [
-      ./purity.patch
-      # https://reviews.llvm.org/D51899
-      ./compiler-rt-baremetal.patch
-      # make clang -xhip use $PATH to find executables
-      ./HIP-use-PATH-9.patch
-      ./gnu-install-dirs.patch
-      (substituteAll {
-        src = ../../common/clang/clang-6-10-LLVMgold-path.patch;
-        libllvmLibdir = "${libllvm.lib}/lib";
-      })
-    ];
-
-    postPatch = ''
-      sed -i -e 's/DriverArgs.hasArg(options::OPT_nostdlibinc)/true/' \
-             -e 's/Args.hasArg(options::OPT_nostdlibinc)/true/' \
-             lib/Driver/ToolChains/*.cpp
-    '' + lib.optionalString stdenv.hostPlatform.isMusl ''
-      sed -i -e 's/lgcc_s/lgcc_eh/' lib/Driver/ToolChains/*.cpp
-    '' + lib.optionalString stdenv.hostPlatform.isDarwin ''
-      substituteInPlace tools/extra/clangd/CMakeLists.txt \
-        --replace "NOT HAVE_CXX_ATOMICS64_WITHOUT_LIB" FALSE
-    '';
-
-    outputs = [ "out" "lib" "dev" "python" ];
-
-    postInstall = ''
-      ln -sv $out/bin/clang $out/bin/cpp
-
-      # Move libclang to 'lib' output
-      moveToOutput "lib/libclang.*" "$lib"
-      moveToOutput "lib/libclang-cpp.*" "$lib"
-      substituteInPlace $out/lib/cmake/clang/ClangTargets-release.cmake \
-          --replace "\''${_IMPORT_PREFIX}/lib/libclang." "$lib/lib/libclang." \
-          --replace "\''${_IMPORT_PREFIX}/lib/libclang-cpp." "$lib/lib/libclang-cpp."
-
-      mkdir -p $python/bin $python/share/{clang,scan-view}
-      mv $out/bin/{git-clang-format,scan-view} $python/bin
-      if [ -e $out/bin/set-xcode-analyzer ]; then
-        mv $out/bin/set-xcode-analyzer $python/bin
-      fi
-      mv $out/share/clang/*.py $python/share/clang
-      mv $out/share/scan-view/*.py $python/share/scan-view
-      rm $out/bin/c-index-test
-      patchShebangs $python/bin
-
-      mkdir -p $dev/bin
-      cp bin/clang-tblgen $dev/bin
-    '';
-
-    passthru = {
-      inherit libllvm;
-      isClang = true;
-      hardeningUnsupportedFlags = [ "fortify3" "zerocallusedregs" ];
-    };
-
-    meta = llvm_meta // {
-      homepage = "https://clang.llvm.org/";
-      description = "A C language family frontend for LLVM";
-      longDescription = ''
-        The Clang project provides a language front-end and tooling
-        infrastructure for languages in the C language family (C, C++, Objective
-        C/C++, OpenCL, CUDA, and RenderScript) for the LLVM project.
-        It aims to deliver amazingly fast compiles, extremely useful error and
-        warning messages and to provide a platform for building great source
-        level tools. The Clang Static Analyzer and clang-tidy are tools that
-        automatically find bugs in your code, and are great examples of the sort
-        of tools that can be built using the Clang frontend as a library to
-        parse C/C++ code.
-      '';
-      mainProgram = "clang";
-    };
-  } // lib.optionalAttrs enableManpages {
-    pname = "clang-manpages";
-
-    buildPhase = ''
-      make docs-clang-man
-    '';
-
-    installPhase = ''
-      mkdir -p $out/share/man/man1
-      # Manually install clang manpage
-      cp docs/man/*.1 $out/share/man/man1/
-    '';
-
-    outputs = [ "out" ];
-
-    doCheck = false;
-
-    meta = llvm_meta // {
-      description = "man page for Clang ${version}";
-    };
-  });
-in self
--- a/pkgs/development/compilers/llvm/9/clang/gnu-install-dirs.patch
+++ b/pkgs/development/compilers/llvm/9/clang/gnu-install-dirs.patch
@ -1,278 +0,0 @@
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 60937aa9db38..45522ff32998 100644
--- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -9,6 +9,8 @@ endif()
- if( CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR )
-   project(Clang)
- 
-+  include(GNUInstallDirs)
-+
-   # Rely on llvm-config.
-   set(CONFIG_OUTPUT)
-   if(LLVM_CONFIG)
-@@ -413,7 +415,7 @@ include_directories(BEFORE
- 
- if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
-   install(DIRECTORY include/clang include/clang-c
-    DESTINATION include
-+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-     COMPONENT clang-headers
-     FILES_MATCHING
-     PATTERN "*.def"
-@@ -423,7 +425,7 @@ if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
-     )
- 
-   install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/include/clang
-    DESTINATION include
-+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-     COMPONENT clang-headers
-     FILES_MATCHING
-     PATTERN "CMakeFiles" EXCLUDE
-@@ -442,7 +444,7 @@ if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
-   endif()
- 
-   install(PROGRAMS utils/bash-autocomplete.sh
-    DESTINATION share/clang
-+    DESTINATION ${CMAKE_INSTALL_DATADIR}/clang
-     )
- endif()
- 
-diff --git a/cmake/modules/AddClang.cmake b/cmake/modules/AddClang.cmake
-index cbd618e18afb..63ba43f18e64 100644
--- a/cmake/modules/AddClang.cmake
-+++ b/cmake/modules/AddClang.cmake
-@@ -109,9 +109,9 @@ macro(add_clang_library name)
-       install(TARGETS ${name}
-         COMPONENT ${name}
-         ${export_to_clangtargets}
-        LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}
-        ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX}
-        RUNTIME DESTINATION bin)
-+        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}
-+        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}
-+        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
- 
-       if (NOT LLVM_ENABLE_IDE)
-         add_llvm_install_targets(install-${name}
-@@ -155,7 +155,7 @@ macro(add_clang_tool name)
- 
-     install(TARGETS ${name}
-       ${export_to_clangtargets}
-      RUNTIME DESTINATION bin
-+      RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-       COMPONENT ${name})
- 
-     if(NOT LLVM_ENABLE_IDE)
-@@ -170,7 +170,7 @@ endmacro()
- macro(add_clang_symlink name dest)
-   add_llvm_tool_symlink(${name} ${dest} ALWAYS_GENERATE)
-   # Always generate install targets
-  llvm_install_symlink(${name} ${dest} ALWAYS_GENERATE)
-+  llvm_install_symlink(${name} ${dest} ${CMAKE_INSTALL_FULL_BINDIR} ALWAYS_GENERATE)
- endmacro()
- 
- function(clang_target_link_libraries target type)
-diff --git a/lib/Headers/CMakeLists.txt b/lib/Headers/CMakeLists.txt
-index a3c0b08fa364..aa4215c0999c 100644
--- a/lib/Headers/CMakeLists.txt
-+++ b/lib/Headers/CMakeLists.txt
-@@ -185,7 +185,7 @@ set_target_properties(clang-resource-headers PROPERTIES
-   FOLDER "Misc"
-   RUNTIME_OUTPUT_DIRECTORY "${output_dir}")
- 
-set(header_install_dir lib${LLVM_LIBDIR_SUFFIX}/clang/${CLANG_VERSION}/include)
-+set(header_install_dir ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}/clang/${CLANG_VERSION}/include)
- 
- install(
-   FILES ${files} ${generated_files}
-diff --git a/tools/c-index-test/CMakeLists.txt b/tools/c-index-test/CMakeLists.txt
-index ceef4b08637c..8efad5520ca4 100644
--- a/tools/c-index-test/CMakeLists.txt
-+++ b/tools/c-index-test/CMakeLists.txt
-@@ -54,7 +54,7 @@ if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
-     set_property(TARGET c-index-test APPEND PROPERTY INSTALL_RPATH
-        "@executable_path/../../lib")
-   else()
-    set(INSTALL_DESTINATION bin)
-+    set(INSTALL_DESTINATION ${CMAKE_INSTALL_BINDIR})
-   endif()
- 
-   install(TARGETS c-index-test
-diff --git a/tools/clang-check/CMakeLists.txt b/tools/clang-check/CMakeLists.txt
-index 4576d78bcfb4..7c3b302d8d59 100644
--- a/tools/clang-check/CMakeLists.txt
-+++ b/tools/clang-check/CMakeLists.txt
-@@ -21,4 +21,4 @@ clang_target_link_libraries(clang-check
-   )
- 
- install(TARGETS clang-check
-  RUNTIME DESTINATION bin)
-+  RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
-diff --git a/tools/clang-extdef-mapping/CMakeLists.txt b/tools/clang-extdef-mapping/CMakeLists.txt
-index 4798bdb71ad0..02d07b9982ac 100644
--- a/tools/clang-extdef-mapping/CMakeLists.txt
-+++ b/tools/clang-extdef-mapping/CMakeLists.txt
-@@ -18,4 +18,4 @@ clang_target_link_libraries(clang-extdef-mapping
-   )
- 
- install(TARGETS clang-extdef-mapping
-  RUNTIME DESTINATION bin)
-+  RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
-diff --git a/tools/clang-format/CMakeLists.txt b/tools/clang-format/CMakeLists.txt
-index 35ecdb11253c..d77d75de0094 100644
--- a/tools/clang-format/CMakeLists.txt
-+++ b/tools/clang-format/CMakeLists.txt
-@@ -21,20 +21,20 @@ if( LLVM_LIB_FUZZING_ENGINE OR LLVM_USE_SANITIZE_COVERAGE )
- endif()
- 
- install(PROGRAMS clang-format-bbedit.applescript
-  DESTINATION share/clang
-+  DESTINATION ${CMAKE_INSTALL_DATADIR}/clang
-   COMPONENT clang-format)
- install(PROGRAMS clang-format-diff.py
-  DESTINATION share/clang
-+  DESTINATION ${CMAKE_INSTALL_DATADIR}/clang
-   COMPONENT clang-format)
- install(PROGRAMS clang-format-sublime.py
-  DESTINATION share/clang
-+  DESTINATION ${CMAKE_INSTALL_DATADIR}/clang
-   COMPONENT clang-format)
- install(PROGRAMS clang-format.el
-  DESTINATION share/clang
-+  DESTINATION ${CMAKE_INSTALL_DATADIR}/clang
-   COMPONENT clang-format)
- install(PROGRAMS clang-format.py
-  DESTINATION share/clang
-+  DESTINATION ${CMAKE_INSTALL_DATADIR}/clang
-   COMPONENT clang-format)
- install(PROGRAMS git-clang-format
-  DESTINATION bin
-+  DESTINATION ${CMAKE_INSTALL_BINDIR}
-   COMPONENT clang-format)
-diff --git a/tools/clang-offload-bundler/CMakeLists.txt b/tools/clang-offload-bundler/CMakeLists.txt
-index 465bef040a6c..729369ed9429 100644
--- a/tools/clang-offload-bundler/CMakeLists.txt
-+++ b/tools/clang-offload-bundler/CMakeLists.txt
-@@ -22,4 +22,4 @@ clang_target_link_libraries(clang-offload-bundler
-   ${CLANG_OFFLOAD_BUNDLER_LIB_DEPS}
-   )
- 
-install(TARGETS clang-offload-bundler RUNTIME DESTINATION bin)
-+install(TARGETS clang-offload-bundler RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
-diff --git a/tools/clang-rename/CMakeLists.txt b/tools/clang-rename/CMakeLists.txt
-index cda8e29ec5b1..0134d8ccd70b 100644
--- a/tools/clang-rename/CMakeLists.txt
-+++ b/tools/clang-rename/CMakeLists.txt
-@@ -19,8 +19,8 @@ clang_target_link_libraries(clang-rename
-   )
- 
- install(PROGRAMS clang-rename.py
-  DESTINATION share/clang
-+  DESTINATION ${CMAKE_INSTALL_DATADIR}/clang
-   COMPONENT clang-rename)
- install(PROGRAMS clang-rename.el
-  DESTINATION share/clang
-+  DESTINATION ${CMAKE_INSTALL_DATADIR}/clang
-   COMPONENT clang-rename)
-diff --git a/tools/diagtool/CMakeLists.txt b/tools/diagtool/CMakeLists.txt
-index a95444be40ee..136d96d9bf5b 100644
--- a/tools/diagtool/CMakeLists.txt
-+++ b/tools/diagtool/CMakeLists.txt
-@@ -21,7 +21,7 @@ clang_target_link_libraries(diagtool
- if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
-   install(TARGETS diagtool
-     COMPONENT diagtool
-    RUNTIME DESTINATION bin)
-+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
- 
-   if (NOT LLVM_ENABLE_IDE)
-     add_llvm_install_targets(install-diagtool
-diff --git a/tools/libclang/CMakeLists.txt b/tools/libclang/CMakeLists.txt
-index 613ead1a36b6..e5c7bf27f739 100644
--- a/tools/libclang/CMakeLists.txt
-+++ b/tools/libclang/CMakeLists.txt
-@@ -137,7 +137,7 @@ endif()
- if(INTERNAL_INSTALL_PREFIX)
-   set(LIBCLANG_HEADERS_INSTALL_DESTINATION "${INTERNAL_INSTALL_PREFIX}/include")
- else()
-  set(LIBCLANG_HEADERS_INSTALL_DESTINATION include)
-+  set(LIBCLANG_HEADERS_INSTALL_DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
- endif()
- 
- install(DIRECTORY ../../include/clang-c
-@@ -168,7 +168,7 @@ foreach(PythonVersion ${CLANG_PYTHON_BINDINGS_VERSIONS})
-           COMPONENT
-             libclang-python-bindings
-           DESTINATION
-            "lib${LLVM_LIBDIR_SUFFIX}/python${PythonVersion}/site-packages")
-+            "${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}/python${PythonVersion}/site-packages")
- endforeach()
- if(NOT LLVM_ENABLE_IDE)
-   add_custom_target(libclang-python-bindings)
-diff --git a/tools/scan-build/CMakeLists.txt b/tools/scan-build/CMakeLists.txt
-index 380379300b09..adfd58ed5f7d 100644
--- a/tools/scan-build/CMakeLists.txt
-+++ b/tools/scan-build/CMakeLists.txt
-@@ -41,7 +41,7 @@ if(CLANG_INSTALL_SCANBUILD)
-                          ${CMAKE_BINARY_DIR}/bin/
-                        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/bin/${BinFile})
-     list(APPEND Depends ${CMAKE_BINARY_DIR}/bin/${BinFile})
-    install(PROGRAMS bin/${BinFile} DESTINATION bin)
-+    install(PROGRAMS bin/${BinFile} DESTINATION ${CMAKE_INSTALL_BINDIR})
-   endforeach()
- 
-   foreach(LibexecFile ${LibexecFiles})
-@@ -53,7 +53,7 @@ if(CLANG_INSTALL_SCANBUILD)
-                          ${CMAKE_BINARY_DIR}/libexec/
-                        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/libexec/${LibexecFile})
-     list(APPEND Depends ${CMAKE_BINARY_DIR}/libexec/${LibexecFile})
-    install(PROGRAMS libexec/${LibexecFile} DESTINATION libexec)
-+    install(PROGRAMS libexec/${LibexecFile} DESTINATION ${CMAKE_INSTALL_LIBEXECDIR})
-   endforeach()
- 
-   foreach(ManPage ${ManPages})
-@@ -77,7 +77,7 @@ if(CLANG_INSTALL_SCANBUILD)
-                          ${CMAKE_BINARY_DIR}/share/scan-build/
-                        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/share/scan-build/${ShareFile})
-     list(APPEND Depends ${CMAKE_BINARY_DIR}/share/scan-build/${ShareFile})
-    install(FILES share/scan-build/${ShareFile} DESTINATION share/scan-build)
-+    install(FILES share/scan-build/${ShareFile} DESTINATION ${CMAKE_INSTALL_DATADIR}/scan-build)
-   endforeach()
- 
-   add_custom_target(scan-build ALL DEPENDS ${Depends})
-diff --git a/tools/scan-view/CMakeLists.txt b/tools/scan-view/CMakeLists.txt
-index b305ca562a72..554bcb379061 100644
--- a/tools/scan-view/CMakeLists.txt
-+++ b/tools/scan-view/CMakeLists.txt
-@@ -21,7 +21,7 @@ if(CLANG_INSTALL_SCANVIEW)
-                          ${CMAKE_BINARY_DIR}/bin/
-                        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/bin/${BinFile})
-     list(APPEND Depends ${CMAKE_BINARY_DIR}/bin/${BinFile})
-    install(PROGRAMS bin/${BinFile} DESTINATION bin)
-+    install(PROGRAMS bin/${BinFile} DESTINATION ${CMAKE_INSTALL_BINDIR})
-   endforeach()
- 
-   foreach(ShareFile ${ShareFiles})
-@@ -33,7 +33,7 @@ if(CLANG_INSTALL_SCANVIEW)
-                          ${CMAKE_BINARY_DIR}/share/scan-view/
-                        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/share/${ShareFile})
-     list(APPEND Depends ${CMAKE_BINARY_DIR}/share/scan-view/${ShareFile})
-    install(FILES share/${ShareFile} DESTINATION share/scan-view)
-+    install(FILES share/${ShareFile} DESTINATION ${CMAKE_INSTALL_DATADIR}/scan-view)
-   endforeach()
- 
-   add_custom_target(scan-view ALL DEPENDS ${Depends})
-diff --git a/utils/hmaptool/CMakeLists.txt b/utils/hmaptool/CMakeLists.txt
-index 5573009d343a..24b3a90f233f 100644
--- a/utils/hmaptool/CMakeLists.txt
-+++ b/utils/hmaptool/CMakeLists.txt
-@@ -9,7 +9,7 @@ add_custom_command(OUTPUT ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/bin/${CLANG_HM
-                    DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${CLANG_HMAPTOOL})
- 
- list(APPEND Depends ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/bin/${CLANG_HMAPTOOL})
-install(PROGRAMS ${CLANG_HMAPTOOL} DESTINATION bin)
-+install(PROGRAMS ${CLANG_HMAPTOOL} DESTINATION ${CMAKE_INSTALL_BINDIR})
- 
- add_custom_target(hmaptool ALL DEPENDS ${Depends})
- set_target_properties(hmaptool PROPERTIES FOLDER "Utils")
--- a/pkgs/development/compilers/llvm/9/clang/purity.patch
+++ b/pkgs/development/compilers/llvm/9/clang/purity.patch
@ -1,30 +0,0 @@
-From 4add81bba40dcec62c4ea4481be8e35ac53e89d8 Mon Sep 17 00:00:00 2001
-From: Will Dietz <w@wdtz.org>
-Date: Thu, 18 May 2017 11:56:12 -0500
-Subject: [PATCH] "purity" patch for 5.0
-
---
- lib/Driver/ToolChains/Gnu.cpp | 7 -------
- 1 file changed, 7 deletions(-)
-
-diff --git a/lib/Driver/ToolChains/Gnu.cpp b/lib/Driver/ToolChains/Gnu.cpp
-index fe3c0191bb..c6a482bece 100644
--- a/lib/Driver/ToolChains/Gnu.cpp
-+++ b/lib/Driver/ToolChains/Gnu.cpp
-@@ -494,13 +494,6 @@ void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
-   if (!IsStatic) {
-     if (Args.hasArg(options::OPT_rdynamic))
-       CmdArgs.push_back("-export-dynamic");
-
-    if (!Args.hasArg(options::OPT_shared) && !IsStaticPIE) {
-      const std::string Loader =
-          D.DyldPrefix + ToolChain.getDynamicLinker(Args);
-      CmdArgs.push_back("-dynamic-linker");
-      CmdArgs.push_back(Args.MakeArgString(Loader));
-    }
-   }
- 
-   CmdArgs.push_back("-o");
-- 
-2.11.0
-
--- a/pkgs/development/compilers/llvm/9/compiler-rt/armv7l.patch
+++ b/pkgs/development/compilers/llvm/9/compiler-rt/armv7l.patch
@ -1,38 +0,0 @@
-diff -ur compiler-rt-7.1.0.src/cmake/builtin-config-ix.cmake compiler-rt-7.1.0.src-patched/cmake/builtin-config-ix.cmake
--- compiler-rt-7.1.0.src/cmake/builtin-config-ix.cmake	2018-05-25 06:36:27.000000000 +0900
-+++ compiler-rt-7.1.0.src-patched/cmake/builtin-config-ix.cmake	2020-05-09 20:26:33.030608692 +0900
-@@ -24,7 +24,7 @@
- 
- 
- set(ARM64 aarch64)
-set(ARM32 arm armhf armv6m armv7m armv7em armv7 armv7s armv7k)
-+set(ARM32 arm armhf armv6m armv7m armv7em armv7 armv7s armv7k armv7l)
- set(HEXAGON hexagon)
- set(X86 i386)
- set(X86_64 x86_64)
-diff -ur compiler-rt-7.1.0.src/lib/builtins/CMakeLists.txt compiler-rt-7.1.0.src-patched/lib/builtins/CMakeLists.txt
--- compiler-rt-7.1.0.src/lib/builtins/CMakeLists.txt	2018-07-31 03:18:59.000000000 +0900
-+++ compiler-rt-7.1.0.src-patched/lib/builtins/CMakeLists.txt	2020-05-09 20:27:38.893409318 +0900
-@@ -453,6 +453,7 @@
- set(armv7_SOURCES ${arm_SOURCES})
- set(armv7s_SOURCES ${arm_SOURCES})
- set(armv7k_SOURCES ${arm_SOURCES})
-+set(armv7l_SOURCES ${arm_SOURCES})
- set(arm64_SOURCES ${aarch64_SOURCES})
- 
- # macho_embedded archs
-@@ -563,12 +564,12 @@
-       set(_arch ${arch})
-       if("${arch}" STREQUAL "armv6m")
-         set(_arch "arm|armv6m")
-      elseif("${arch}" MATCHES "^(armhf|armv7|armv7s|armv7k|armv7m|armv7em)$")
-+      elseif("${arch}" MATCHES "^(armhf|armv7|armv7s|armv7k|armv7l|armv7m|armv7em)$")
-         set(_arch "arm")
-       endif()
- 
-       # For ARM archs, exclude any VFP builtins if VFP is not supported
-      if (${arch} MATCHES "^(arm|armhf|armv7|armv7s|armv7k|armv7m|armv7em)$")
-+      if (${arch} MATCHES "^(arm|armhf|armv7|armv7s|armv7k|armv7l|armv7m|armv7em)$")
-         string(REPLACE ";" " " _TARGET_${arch}_CFLAGS "${TARGET_${arch}_CFLAGS}")
-         check_compile_definition(__VFP_FP__ "${CMAKE_C_FLAGS} ${_TARGET_${arch}_CFLAGS}" COMPILER_RT_HAS_${arch}_VFP)
-         if(NOT COMPILER_RT_HAS_${arch}_VFP)
--- a/pkgs/development/compilers/llvm/9/compiler-rt/default.nix
+++ b/pkgs/development/compilers/llvm/9/compiler-rt/default.nix
@ -1,123 +0,0 @@
-{ lib, stdenv, llvm_meta, version, fetch, cmake, python3, libllvm, libcxxabi
-, doFakeLibgcc ? stdenv.hostPlatform.isFreeBSD
-}:
-
-let
-
-  useLLVM = stdenv.hostPlatform.useLLVM or false;
-  bareMetal = stdenv.hostPlatform.parsed.kernel.name == "none";
-  haveLibc = stdenv.cc.libc != null;
-  inherit (stdenv.hostPlatform) isMusl;
-
-in
-
-stdenv.mkDerivation {
-  pname = "compiler-rt" + lib.optionalString (haveLibc) "-libc";
-  inherit version;
-  src = fetch "compiler-rt" "0xwh79g3zggdabxgnd0bphry75asm1qz7mv3hcqihqwqr6aspgy2";
-
-  nativeBuildInputs = [ cmake python3 libllvm.dev ];
-  buildInputs = lib.optional stdenv.hostPlatform.isDarwin libcxxabi;
-
-  env.NIX_CFLAGS_COMPILE = toString [
-    "-DSCUDO_DEFAULT_OPTIONS=DeleteSizeMismatch=0:DeallocationTypeMismatch=0"
-  ];
-
-  cmakeFlags = [
-    "-DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON"
-    "-DCMAKE_C_COMPILER_TARGET=${stdenv.hostPlatform.config}"
-    "-DCMAKE_ASM_COMPILER_TARGET=${stdenv.hostPlatform.config}"
-  ] ++ lib.optionals (useLLVM || bareMetal || isMusl) [
-    "-DCOMPILER_RT_BUILD_SANITIZERS=OFF"
-    "-DCOMPILER_RT_BUILD_XRAY=OFF"
-    "-DCOMPILER_RT_BUILD_LIBFUZZER=OFF"
-  ] ++ lib.optionals (useLLVM || bareMetal) [
-    "-DCOMPILER_RT_BUILD_PROFILE=OFF"
-  ] ++ lib.optionals ((useLLVM || bareMetal) && !haveLibc) [
-    "-DCMAKE_C_COMPILER_WORKS=ON"
-    "-DCMAKE_CXX_COMPILER_WORKS=ON"
-    "-DCOMPILER_RT_BAREMETAL_BUILD=ON"
-    "-DCMAKE_SIZEOF_VOID_P=${toString (stdenv.hostPlatform.parsed.cpu.bits / 8)}"
-  ] ++ lib.optionals (useLLVM) [
-    "-DCOMPILER_RT_BUILD_BUILTINS=ON"
-    #https://stackoverflow.com/questions/53633705/cmake-the-c-compiler-is-not-able-to-compile-a-simple-test-program
-    "-DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY"
-  ] ++ lib.optionals (bareMetal) [
-    "-DCOMPILER_RT_OS_DIR=baremetal"
-  ] ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
-    # The compiler-rt build infrastructure sniffs supported platforms on Darwin
-    # and finds i386;x86_64;x86_64h. We only build for x86_64, so linking fails
-    # when it tries to use libc++ and libc++api for i386.
-    "-DDARWIN_osx_ARCHS=${stdenv.hostPlatform.darwinArch}"
-  ];
-
-  outputs = [ "out" "dev" ];
-
-  patches = [
-    # https://github.com/llvm/llvm-project/commit/947f9692440836dcb8d88b74b69dd379d85974ce
-    ../../common/compiler-rt/glibc.patch
-    ../../common/compiler-rt/7-12-codesign.patch # Revert compiler-rt commit that makes codesign mandatory
-    ./gnu-install-dirs.patch
-    ../../common/compiler-rt/libsanitizer-no-cyclades-9.patch
-    # Fix build on armv6l
-    ../../common/compiler-rt/armv6-mcr-dmb.patch
-    ../../common/compiler-rt/armv6-sync-ops-no-thumb.patch
-    ../../common/compiler-rt/armv6-no-ldrexd-strexd.patch
-  ] ++ lib.optional stdenv.hostPlatform.isAarch32 ./armv7l.patch;
-
-  # TSAN requires XPC on Darwin, which we have no public/free source files for. We can depend on the Apple frameworks
-  # to get it, but they're unfree. Since LLVM is rather central to the stdenv, we patch out TSAN support so that Hydra
-  # can build this. If we didn't do it, basically the entire nixpkgs on Darwin would have an unfree dependency and we'd
-  # get no binary cache for the entire platform. If you really find yourself wanting the TSAN, make this controllable by
-  # a flag and turn the flag off during the stdenv build.
-  postPatch = lib.optionalString (!stdenv.isDarwin) ''
-    substituteInPlace cmake/builtin-config-ix.cmake \
-      --replace 'set(X86 i386)' 'set(X86 i386 i486 i586 i686)'
-  '' + lib.optionalString stdenv.isDarwin ''
-    substituteInPlace cmake/config-ix.cmake \
-      --replace 'set(COMPILER_RT_HAS_TSAN TRUE)' 'set(COMPILER_RT_HAS_TSAN FALSE)'
-  '' + lib.optionalString (useLLVM) ''
-    substituteInPlace lib/builtins/int_util.c \
-      --replace "#include <stdlib.h>" ""
-    substituteInPlace lib/builtins/clear_cache.c \
-      --replace "#include <assert.h>" ""
-    substituteInPlace lib/builtins/cpu_model.c \
-      --replace "#include <assert.h>" ""
-  '';
-
-  preConfigure = lib.optionalString (useLLVM && !haveLibc) ''
-    cmakeFlagsArray+=(-DCMAKE_C_FLAGS="-nodefaultlibs -ffreestanding")
-  '';
-
-  # Hack around weird upsream RPATH bug
-  postInstall = lib.optionalString (stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.isWasm) ''
-    ln -s "$out/lib"/*/* "$out/lib"
-  '' + lib.optionalString (useLLVM) ''
-    ln -s $out/lib/*/clang_rt.crtbegin-*.o $out/lib/crtbegin.o
-    ln -s $out/lib/*/clang_rt.crtend-*.o $out/lib/crtend.o
-    ln -s $out/lib/*/clang_rt.crtbegin_shared-*.o $out/lib/crtbeginS.o
-    ln -s $out/lib/*/clang_rt.crtend_shared-*.o $out/lib/crtendS.o
-  '' + lib.optionalString doFakeLibgcc ''
-    ln -s $out/lib/freebsd/libclang_rt.builtins-*.a $out/lib/libgcc.a
-  '';
-
-  meta = llvm_meta // {
-    homepage = "https://compiler-rt.llvm.org/";
-    description = "Compiler runtime libraries";
-    longDescription = ''
-      The compiler-rt project provides highly tuned implementations of the
-      low-level code generator support routines like "__fixunsdfdi" and other
-      calls generated when a target doesn't have a short sequence of native
-      instructions to implement a core IR operation. It also provides
-      implementations of run-time libraries for dynamic testing tools such as
-      AddressSanitizer, ThreadSanitizer, MemorySanitizer, and DataFlowSanitizer.
-    '';
-    # "All of the code in the compiler-rt project is dual licensed under the MIT
-    # license and the UIUC License (a BSD-like license)":
-    license = with lib.licenses; [ mit ncsa ];
-    broken = stdenv.hostPlatform.system == "aarch64-darwin"
-      # compiler-rt requires a Clang stdenv on 32-bit RISC-V:
-      # https://reviews.llvm.org/D43106#1019077
-      || (stdenv.hostPlatform.isRiscV32 && !stdenv.cc.isClang);
-  };
-}
--- a/pkgs/development/compilers/llvm/9/compiler-rt/gnu-install-dirs.patch
+++ b/pkgs/development/compilers/llvm/9/compiler-rt/gnu-install-dirs.patch
@ -1,117 +0,0 @@
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index f26ae25ada30..8ba536afdccc 100644
--- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -12,6 +12,7 @@ endif()
- # Check if compiler-rt is built as a standalone project.
- if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR OR COMPILER_RT_STANDALONE_BUILD)
-   project(CompilerRT C CXX ASM)
-+  include(GNUInstallDirs)
-   set(COMPILER_RT_STANDALONE_BUILD TRUE)
-   set_property(GLOBAL PROPERTY USE_FOLDERS ON)
- endif()
-diff --git a/cmake/Modules/AddCompilerRT.cmake b/cmake/Modules/AddCompilerRT.cmake
-index f7ee932f214f..ef94a97c4be9 100644
--- a/cmake/Modules/AddCompilerRT.cmake
-+++ b/cmake/Modules/AddCompilerRT.cmake
-@@ -488,7 +488,7 @@ macro(add_compiler_rt_resource_file target_name file_name component)
-   add_custom_target(${target_name} DEPENDS ${dst_file})
-   # Install in Clang resource directory.
-   install(FILES ${file_name}
-    DESTINATION ${COMPILER_RT_INSTALL_PATH}/share
-+    DESTINATION ${COMPILER_RT_INSTALL_PATH}/${CMAKE_INSTALL_FULL_DATADIR}
-     COMPONENT ${component})
-   add_dependencies(${component} ${target_name})
- 
-@@ -505,7 +505,7 @@ macro(add_compiler_rt_script name)
-   add_custom_target(${name} DEPENDS ${dst})
-   install(FILES ${dst}
-     PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE
-    DESTINATION ${COMPILER_RT_INSTALL_PATH}/bin)
-+    DESTINATION ${COMPILER_RT_INSTALL_PATH}/${CMAKE_INSTALL_FULL_BINDIR})
- endmacro(add_compiler_rt_script src name)
- 
- # Builds custom version of libc++ and installs it in <prefix>.
-diff --git a/cmake/Modules/CompilerRTDarwinUtils.cmake b/cmake/Modules/CompilerRTDarwinUtils.cmake
-index b50d55b56940..7e5729ad9c8e 100644
--- a/cmake/Modules/CompilerRTDarwinUtils.cmake
-+++ b/cmake/Modules/CompilerRTDarwinUtils.cmake
-@@ -386,7 +386,7 @@ macro(darwin_add_embedded_builtin_libraries)
-     set(DARWIN_macho_embedded_LIBRARY_OUTPUT_DIR
-       ${COMPILER_RT_OUTPUT_DIR}/lib/macho_embedded)
-     set(DARWIN_macho_embedded_LIBRARY_INSTALL_DIR
-      ${COMPILER_RT_INSTALL_PATH}/lib/macho_embedded)
-+      ${COMPILER_RT_INSTALL_PATH}/${CMAKE_INSTALL_FULL_LIBDIR}/macho_embedded)
-       
-     set(CFLAGS_armv7 "-target thumbv7-apple-darwin-eabi")
-     set(CFLAGS_i386 "-march=pentium")
-diff --git a/cmake/Modules/CompilerRTUtils.cmake b/cmake/Modules/CompilerRTUtils.cmake
-index 6e672b1e1818..64999709958e 100644
--- a/cmake/Modules/CompilerRTUtils.cmake
-+++ b/cmake/Modules/CompilerRTUtils.cmake
-@@ -371,7 +371,7 @@ endfunction()
- function(get_compiler_rt_install_dir arch install_dir)
-   if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
-     get_compiler_rt_target(${arch} target)
-    set(${install_dir} ${COMPILER_RT_INSTALL_PATH}/lib/${target} PARENT_SCOPE)
-+    set(${install_dir} ${COMPILER_RT_INSTALL_PATH}/${CMAKE_INSTALL_FULL_LIBDIR}/${target} PARENT_SCOPE)
-   else()
-     set(${install_dir} ${COMPILER_RT_LIBRARY_INSTALL_DIR} PARENT_SCOPE)
-   endif()
-diff --git a/cmake/base-config-ix.cmake b/cmake/base-config-ix.cmake
-index cef0e0d73d87..db33fb028287 100644
--- a/cmake/base-config-ix.cmake
-+++ b/cmake/base-config-ix.cmake
-@@ -55,11 +55,11 @@ if (LLVM_TREE_AVAILABLE)
- else()
-     # Take output dir and install path from the user.
-   set(COMPILER_RT_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR} CACHE PATH
-    "Path where built compiler-rt libraries should be stored.")
-+    "Path where built compiler-rt build artifacts should be stored.")
-   set(COMPILER_RT_EXEC_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR}/bin CACHE PATH
-     "Path where built compiler-rt executables should be stored.")
-  set(COMPILER_RT_INSTALL_PATH ${CMAKE_INSTALL_PREFIX} CACHE PATH
-    "Path where built compiler-rt libraries should be installed.")
-+  set(COMPILER_RT_INSTALL_PATH "" CACHE PATH
-+    "Prefix where built compiler-rt artifacts should be installed, comes before CMAKE_INSTALL_PREFIX.")
-   option(COMPILER_RT_INCLUDE_TESTS "Generate and build compiler-rt unit tests." OFF)
-   option(COMPILER_RT_ENABLE_WERROR "Fail and stop if warning is triggered" OFF)
-   # Use a host compiler to compile/link tests.
-@@ -87,7 +87,7 @@ else(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR)
-   set(COMPILER_RT_LIBRARY_OUTPUT_DIR
-     ${COMPILER_RT_OUTPUT_DIR}/lib/${COMPILER_RT_OS_DIR})
-   set(COMPILER_RT_LIBRARY_INSTALL_DIR
-    ${COMPILER_RT_INSTALL_PATH}/lib/${COMPILER_RT_OS_DIR})
-+    ${COMPILER_RT_INSTALL_PATH}/${CMAKE_INSTALL_FULL_LIBDIR}/${COMPILER_RT_OS_DIR})
- endif()
- 
- if(APPLE)
-diff --git a/include/CMakeLists.txt b/include/CMakeLists.txt
-index 38bd6e41a912..2092d0d08247 100644
--- a/include/CMakeLists.txt
-+++ b/include/CMakeLists.txt
-@@ -50,12 +50,12 @@ set_target_properties(compiler-rt-headers PROPERTIES FOLDER "Compiler-RT Misc")
- install(FILES ${SANITIZER_HEADERS}
-   COMPONENT compiler-rt-headers
-   PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
-  DESTINATION ${COMPILER_RT_INSTALL_PATH}/include/sanitizer)
-+  DESTINATION ${COMPILER_RT_INSTALL_PATH}/${CMAKE_INSTALL_FULL_INCLUDEDIR}/sanitizer)
- # Install xray headers.
- install(FILES ${XRAY_HEADERS}
-   COMPONENT compiler-rt-headers
-   PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
-  DESTINATION ${COMPILER_RT_INSTALL_PATH}/include/xray)
-+  DESTINATION ${COMPILER_RT_INSTALL_PATH}/${CMAKE_INSTALL_FULL_INCLUDEDIR}/xray)
- 
- if (NOT CMAKE_CONFIGURATION_TYPES) # don't add this for IDEs.
-   add_custom_target(install-compiler-rt-headers
-diff --git a/lib/dfsan/CMakeLists.txt b/lib/dfsan/CMakeLists.txt
-index b3ae713cf02c..52b364b900f5 100644
--- a/lib/dfsan/CMakeLists.txt
-+++ b/lib/dfsan/CMakeLists.txt
-@@ -54,4 +54,4 @@ add_custom_command(OUTPUT ${dfsan_abilist_filename}
-                    DEPENDS done_abilist.txt libc_ubuntu1404_abilist.txt)
- add_dependencies(dfsan dfsan_abilist)
- install(FILES ${dfsan_abilist_filename}
-        DESTINATION ${COMPILER_RT_INSTALL_PATH}/share)
-+        DESTINATION ${COMPILER_RT_INSTALL_PATH}/${CMAKE_INSTALL_FULL_DATADIR})
--- a/pkgs/development/compilers/llvm/9/default.nix
+++ b/pkgs/development/compilers/llvm/9/default.nix
@ -1,273 +0,0 @@
-{ lowPrio, newScope, pkgs, lib, stdenv, cmake
-, preLibcCrossHeaders
-, libxml2, python3, isl, fetchurl, overrideCC, wrapCCWith, wrapBintoolsWith
-, buildLlvmTools # tools, but from the previous stage, for cross
-, targetLlvmLibraries # libraries, but from the next stage, for cross
-, targetLlvm
-# This is the default binutils, but with *this* version of LLD rather
-# than the default LLVM version's, if LLD is the choice. We use these for
-# the `useLLVM` bootstrapping below.
-, bootBintoolsNoLibc ?
-    if stdenv.targetPlatform.linker == "lld"
-    then null
-    else pkgs.bintoolsNoLibc
-, bootBintools ?
-    if stdenv.targetPlatform.linker == "lld"
-    then null
-    else pkgs.bintools
-}:
-
-let
-  release_version = "9.0.1";
-  version = release_version; # differentiating these is important for rc's
-
-  fetch = name: sha256: fetchurl {
-    url = "https://github.com/llvm/llvm-project/releases/download/llvmorg-${release_version}/${name}-${version}.src.tar.xz";
-    inherit sha256;
-  };
-
-  clang-tools-extra_src = fetch "clang-tools-extra" "01vgzd4k1q93nfs8gyl83mjlc4x0qsgfqw32lacbjzdxg0mdfvxj";
-
-  inherit (import ../common/common-let.nix { inherit lib release_version; }) llvm_meta;
-
-  tools = lib.makeExtensible (tools: let
-    callPackage = newScope (tools // { inherit stdenv cmake libxml2 python3 isl release_version version fetch buildLlvmTools; });
-    mkExtraBuildCommands0 = cc: ''
-      rsrc="$out/resource-root"
-      mkdir "$rsrc"
-      ln -s "${cc.lib}/lib/clang/${release_version}/include" "$rsrc"
-      echo "-resource-dir=$rsrc" >> $out/nix-support/cc-cflags
-    '';
-    mkExtraBuildCommands = cc: mkExtraBuildCommands0 cc + ''
-      ln -s "${targetLlvmLibraries.compiler-rt.out}/lib" "$rsrc/lib"
-      ln -s "${targetLlvmLibraries.compiler-rt.out}/share" "$rsrc/share"
-    '';
-
-  bintoolsNoLibc' =
-    if bootBintoolsNoLibc == null
-    then tools.bintoolsNoLibc
-    else bootBintoolsNoLibc;
-  bintools' =
-    if bootBintools == null
-    then tools.bintools
-    else bootBintools;
-
-  in {
-
-    libllvm = callPackage ./llvm {
-      inherit llvm_meta;
-    };
-
-    # `llvm` historically had the binaries.  When choosing an output explicitly,
-    # we need to reintroduce `outputSpecified` to get the expected behavior e.g. of lib.get*
-    llvm = tools.libllvm;
-
-    libllvm-polly = callPackage ./llvm {
-      inherit llvm_meta;
-      enablePolly = true;
-    };
-
-    llvm-polly = tools.libllvm-polly.lib // { outputSpecified = false; };
-
-    libclang = callPackage ./clang {
-      inherit clang-tools-extra_src llvm_meta;
-    };
-
-    clang-unwrapped = tools.libclang;
-
-    clang-polly-unwrapped = callPackage ./clang {
-      inherit llvm_meta;
-      inherit clang-tools-extra_src;
-      libllvm = tools.libllvm-polly;
-      enablePolly = true;
-    };
-
-    # disabled until recommonmark supports sphinx 3
-    #llvm-manpages = lowPrio (tools.libllvm.override {
-    #  enableManpages = true;
-    #  python3 = pkgs.python3;  # don't use python-boot
-    #});
-
-    clang-manpages = lowPrio (tools.libclang.override {
-      enableManpages = true;
-      python3 = pkgs.python3;  # don't use python-boot
-    });
-
-    # pick clang appropriate for package set we are targeting
-    clang =
-      /**/ if stdenv.targetPlatform.libc == null then tools.clangNoLibc
-      else if stdenv.targetPlatform.useLLVM or false then tools.clangUseLLVM
-      else if (pkgs.targetPackages.stdenv or stdenv).cc.isGNU then tools.libstdcxxClang
-      else tools.libcxxClang;
-
-    libstdcxxClang = wrapCCWith rec {
-      cc = tools.clang-unwrapped;
-      # libstdcxx is taken from gcc in an ad-hoc way in cc-wrapper.
-      libcxx = null;
-      extraPackages = [
-        targetLlvmLibraries.compiler-rt
-      ];
-      extraBuildCommands = mkExtraBuildCommands cc;
-    };
-
-    libcxxClang = wrapCCWith rec {
-      cc = tools.clang-unwrapped;
-      libcxx = targetLlvmLibraries.libcxx;
-      extraPackages = [
-        libcxx.cxxabi
-        targetLlvmLibraries.compiler-rt
-      ];
-      extraBuildCommands = mkExtraBuildCommands cc;
-    };
-
-    lld = callPackage ./lld {
-      inherit llvm_meta;
-    };
-
-    lldb = callPackage ./lldb {
-      inherit llvm_meta;
-    };
-
-    # Below, is the LLVM bootstrapping logic. It handles building a
-    # fully LLVM toolchain from scratch. No GCC toolchain should be
-    # pulled in. As a consequence, it is very quick to build different
-    # targets provided by LLVM and we can also build for what GCC
-    # doesn’t support like LLVM. Probably we should move to some other
-    # file.
-
-    bintools-unwrapped = callPackage ../common/bintools.nix { };
-
-    bintoolsNoLibc = wrapBintoolsWith {
-      bintools = tools.bintools-unwrapped;
-      libc = preLibcCrossHeaders;
-    };
-
-    bintools = wrapBintoolsWith {
-      bintools = tools.bintools-unwrapped;
-    };
-
-    clangUseLLVM = wrapCCWith rec {
-      cc = tools.clang-unwrapped;
-      libcxx = targetLlvmLibraries.libcxx;
-      bintools = bintools';
-      extraPackages = [
-        libcxx.cxxabi
-        targetLlvmLibraries.compiler-rt
-      ] ++ lib.optionals (!stdenv.targetPlatform.isWasm) [
-        targetLlvmLibraries.libunwind
-      ];
-      extraBuildCommands = ''
-        echo "-rtlib=compiler-rt -Wno-unused-command-line-argument" >> $out/nix-support/cc-cflags
-        echo "-B${targetLlvmLibraries.compiler-rt}/lib" >> $out/nix-support/cc-cflags
-      '' + lib.optionalString (!stdenv.targetPlatform.isWasm) ''
-        echo "--unwindlib=libunwind" >> $out/nix-support/cc-cflags
-        echo "-L${targetLlvmLibraries.libunwind}/lib" >> $out/nix-support/cc-ldflags
-      '' + lib.optionalString (!stdenv.targetPlatform.isWasm && stdenv.targetPlatform.useLLVM or false) ''
-        echo "-lunwind" >> $out/nix-support/cc-ldflags
-      '' + lib.optionalString stdenv.targetPlatform.isWasm ''
-        echo "-fno-exceptions" >> $out/nix-support/cc-cflags
-      '' + mkExtraBuildCommands cc;
-    };
-
-    clangNoLibcxx = wrapCCWith rec {
-      cc = tools.clang-unwrapped;
-      libcxx = null;
-      bintools = bintools';
-      extraPackages = [
-        targetLlvmLibraries.compiler-rt
-      ];
-      extraBuildCommands = ''
-        echo "-rtlib=compiler-rt" >> $out/nix-support/cc-cflags
-        echo "-B${targetLlvmLibraries.compiler-rt}/lib" >> $out/nix-support/cc-cflags
-        echo "-nostdlib++" >> $out/nix-support/cc-cflags
-      '' + mkExtraBuildCommands cc;
-    };
-
-    clangNoLibc = wrapCCWith rec {
-      cc = tools.clang-unwrapped;
-      libcxx = null;
-      bintools = bintoolsNoLibc';
-      extraPackages = [
-        targetLlvmLibraries.compiler-rt
-      ];
-      extraBuildCommands = ''
-        echo "-rtlib=compiler-rt" >> $out/nix-support/cc-cflags
-        echo "-B${targetLlvmLibraries.compiler-rt}/lib" >> $out/nix-support/cc-cflags
-      '' + mkExtraBuildCommands cc;
-    };
-
-    clangNoCompilerRt = wrapCCWith rec {
-      cc = tools.clang-unwrapped;
-      libcxx = null;
-      bintools = bintoolsNoLibc';
-      extraPackages = [ ];
-      extraBuildCommands = ''
-        echo "-nostartfiles" >> $out/nix-support/cc-cflags
-      '' + mkExtraBuildCommands0 cc;
-    };
-
-    clangNoCompilerRtWithLibc = wrapCCWith rec {
-      cc = tools.clang-unwrapped;
-      libcxx = null;
-      bintools = bintools';
-      extraPackages = [ ];
-      extraBuildCommands = mkExtraBuildCommands0 cc;
-    };
-
-  });
-
-  libraries = lib.makeExtensible (libraries: let
-    callPackage = newScope (libraries // buildLlvmTools // { inherit stdenv cmake libxml2 python3 isl release_version version fetch; });
-  in {
-
-    compiler-rt-libc = callPackage ./compiler-rt {
-      inherit llvm_meta;
-      stdenv = if stdenv.hostPlatform.useLLVM or false
-               then overrideCC stdenv buildLlvmTools.clangNoCompilerRtWithLibc
-               else stdenv;
-    };
-
-    compiler-rt-no-libc = callPackage ./compiler-rt {
-      inherit llvm_meta;
-      stdenv = if stdenv.hostPlatform.useLLVM or false
-               then overrideCC stdenv buildLlvmTools.clangNoCompilerRt
-               else stdenv;
-    };
-
-    # N.B. condition is safe because without useLLVM both are the same.
-    compiler-rt = if stdenv.hostPlatform.isAndroid
-      then libraries.compiler-rt-libc
-      else libraries.compiler-rt-no-libc;
-
-    stdenv = overrideCC stdenv buildLlvmTools.clang;
-
-    libcxxStdenv = overrideCC stdenv buildLlvmTools.libcxxClang;
-
-    libcxx = callPackage ./libcxx {
-      inherit llvm_meta;
-      stdenv = if stdenv.hostPlatform.useLLVM or false
-               then overrideCC stdenv buildLlvmTools.clangNoLibcxx
-               else stdenv;
-    };
-
-    libcxxabi = callPackage ./libcxxabi {
-      inherit llvm_meta;
-      stdenv = if stdenv.hostPlatform.useLLVM or false
-               then overrideCC stdenv buildLlvmTools.clangNoLibcxx
-               else stdenv;
-    };
-
-    libunwind = callPackage ./libunwind {
-      inherit llvm_meta;
-      stdenv = if stdenv.hostPlatform.useLLVM or false
-               then overrideCC stdenv buildLlvmTools.clangNoLibcxx
-               else stdenv;
-    };
-
-    openmp = callPackage ./openmp {
-      inherit llvm_meta targetLlvm;
-    };
-  });
-  noExtend = extensible: lib.attrsets.removeAttrs extensible [ "extend" ];
-
-in { inherit tools libraries release_version; } // (noExtend libraries) // (noExtend tools)
--- a/pkgs/development/compilers/llvm/9/libcxx/default.nix
+++ b/pkgs/development/compilers/llvm/9/libcxx/default.nix
@ -1,88 +0,0 @@
-{ lib, stdenv, llvm_meta, fetch, cmake, python3, fixDarwinDylibNames, version
-, cxxabi ? if stdenv.hostPlatform.isFreeBSD then libcxxrt else libcxxabi
-, libcxxabi, libcxxrt
-, enableShared ? !stdenv.hostPlatform.isStatic
-}:
-
-assert stdenv.isDarwin -> cxxabi.pname == "libcxxabi";
-
-stdenv.mkDerivation {
-  pname = "libcxx";
-  inherit version;
-
-  src = fetch "libcxx" "0d2bj5i6mk4caq7skd5nsdmz8c2m5w5anximl5wz3x32p08zz089";
-
-  postUnpack = ''
-    unpackFile ${libcxxabi.src}
-    export LIBCXXABI_INCLUDE_DIR="$PWD/$(ls -d libcxxabi-${version}*)/include"
-  '';
-
-  outputs = [ "out" "dev" ];
-
-  patches = [
-    ./gnu-install-dirs.patch
-  ] ++ lib.optionals stdenv.hostPlatform.isMusl [
-    ../../common/libcxx/libcxx-0001-musl-hacks.patch
-  ];
-
-  # Prevent errors like "error: 'foo' is unavailable: introduced in macOS yy.zz"
-  postPatch = ''
-    substituteInPlace include/__config \
-      --replace "#    define _LIBCPP_USE_AVAILABILITY_APPLE" ""
-  '';
-
-  preConfigure = ''
-    # Get headers from the cxxabi source so we can see private headers not installed by the cxxabi package
-    cmakeFlagsArray=($cmakeFlagsArray -DLIBCXX_CXX_ABI_INCLUDE_PATHS="$LIBCXXABI_INCLUDE_DIR")
-  '' + lib.optionalString stdenv.hostPlatform.isMusl ''
-    patchShebangs utils/cat_files.py
-  '';
-  nativeBuildInputs = [ cmake ]
-    ++ lib.optional (stdenv.hostPlatform.isMusl || stdenv.hostPlatform.isWasi) python3
-    ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
-
-  buildInputs = [ cxxabi ];
-
-  cmakeFlags = [
-    "-DLIBCXX_LIBCPPABI_VERSION=2"
-    "-DLIBCXX_CXX_ABI=${cxxabi.pname}"
-  ] ++ lib.optional (stdenv.hostPlatform.isMusl || stdenv.hostPlatform.isWasi) "-DLIBCXX_HAS_MUSL_LIBC=1"
-    ++ lib.optional (cxxabi.pname == "libcxxabi") "-DLIBCXX_LIBCXXABI_LIB_PATH=${cxxabi}/lib"
-    ++ lib.optional (stdenv.hostPlatform.useLLVM or false) "-DLIBCXX_USE_COMPILER_RT=ON"
-    ++ lib.optionals stdenv.hostPlatform.isWasm [
-      "-DLIBCXX_ENABLE_THREADS=OFF"
-      "-DLIBCXX_ENABLE_FILESYSTEM=OFF"
-      "-DLIBCXX_ENABLE_EXCEPTIONS=OFF"
-    ] ++ lib.optional (!enableShared) "-DLIBCXX_ENABLE_SHARED=OFF";
-
-  preInstall = lib.optionalString (stdenv.isDarwin) ''
-    for file in lib/*.dylib; do
-      if [ -L "$file" ]; then continue; fi
-
-      baseName=$(basename $(${stdenv.cc.targetPrefix}otool -D $file | tail -n 1))
-      installName="$out/lib/$baseName"
-      abiName=$(echo "$baseName" | sed -e 's/libc++/libc++abi/')
-
-      for other in $(${stdenv.cc.targetPrefix}otool -L $file | awk '$1 ~ "/libc\\+\\+abi" { print $1 }'); do
-        ${stdenv.cc.targetPrefix}install_name_tool -change $other ${cxxabi}/lib/$abiName $file
-      done
-    done
-  '';
-
-  passthru = {
-    isLLVM = true;
-    inherit cxxabi;
-  };
-
-  meta = llvm_meta // {
-    homepage = "https://libcxx.llvm.org/";
-    description = "C++ standard library";
-    longDescription = ''
-      libc++ is an implementation of the C++ standard library, targeting C++11,
-      C++14 and above.
-    '';
-    # "All of the code in libc++ is dual licensed under the MIT license and the
-    # UIUC License (a BSD-like license)":
-    license = with lib.licenses; [ mit ncsa ];
-  };
-}
--- a/pkgs/development/compilers/llvm/9/libcxx/gnu-install-dirs.patch
+++ b/pkgs/development/compilers/llvm/9/libcxx/gnu-install-dirs.patch
@ -1,99 +0,0 @@
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index ec1869ddc7ae..a1c040235c8d 100644
--- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -26,6 +26,8 @@ set(CMAKE_MODULE_PATH
- if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR OR LIBCXX_STANDALONE_BUILD)
-   project(libcxx CXX C)
- 
-+  include(GNUInstallDirs)
-+
-   set(PACKAGE_NAME libcxx)
-   set(PACKAGE_VERSION 9.0.1)
-   set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
-@@ -416,7 +418,7 @@ string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION
- if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
-   set(LIBCXX_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/${LLVM_DEFAULT_TARGET_TRIPLE}/c++)
-   set(LIBCXX_HEADER_DIR ${LLVM_BINARY_DIR})
-  set(LIBCXX_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE}/c++)
-+  set(LIBCXX_INSTALL_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE}/c++)
-   if(LIBCXX_LIBDIR_SUBDIR)
-     string(APPEND LIBCXX_LIBRARY_DIR /${LIBCXX_LIBDIR_SUBDIR})
-     string(APPEND LIBCXX_INSTALL_LIBRARY_DIR /${LIBCXX_LIBDIR_SUBDIR})
-@@ -424,10 +426,10 @@ if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
- elseif(LLVM_LIBRARY_OUTPUT_INTDIR)
-   set(LIBCXX_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
-   set(LIBCXX_HEADER_DIR  ${LLVM_BINARY_DIR})
-  set(LIBCXX_INSTALL_LIBRARY_DIR lib${LIBCXX_LIBDIR_SUFFIX})
-+  set(LIBCXX_INSTALL_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR}${LIBCXX_LIBDIR_SUFFIX})
- else()
-   set(LIBCXX_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBCXX_LIBDIR_SUFFIX})
-  set(LIBCXX_INSTALL_LIBRARY_DIR lib${LIBCXX_LIBDIR_SUFFIX})
-+  set(LIBCXX_INSTALL_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR}${LIBCXX_LIBDIR_SUFFIX})
- endif()
- 
- file(MAKE_DIRECTORY "${LIBCXX_BINARY_INCLUDE_DIR}")
-diff --git a/cmake/Modules/HandleLibCXXABI.cmake b/cmake/Modules/HandleLibCXXABI.cmake
-index 10f100f7f0fb..95ed3978ab73 100644
--- a/cmake/Modules/HandleLibCXXABI.cmake
-+++ b/cmake/Modules/HandleLibCXXABI.cmake
-@@ -61,7 +61,7 @@ macro(setup_abi_lib abidefines abishared abistatic abifiles abidirs)
- 
-         if (LIBCXX_INSTALL_HEADERS)
-           install(FILES "${LIBCXX_BINARY_INCLUDE_DIR}/${fpath}"
-            DESTINATION ${LIBCXX_INSTALL_HEADER_PREFIX}include/c++/v1/${dstdir}
-+            DESTINATION ${LIBCXX_INSTALL_HEADER_PREFIX}${CMAKE_INSTALL_INCLUDEDIR}/c++/v1/${dstdir}
-             COMPONENT cxx-headers
-             PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
-             )
-diff --git a/include/CMakeLists.txt b/include/CMakeLists.txt
-index 7cbf82caa81f..7cbde7accd78 100644
--- a/include/CMakeLists.txt
-+++ b/include/CMakeLists.txt
-@@ -243,7 +243,7 @@ if (LIBCXX_INSTALL_HEADERS)
-   foreach(file ${files})
-     get_filename_component(dir ${file} DIRECTORY)
-     install(FILES ${file}
-      DESTINATION ${LIBCXX_INSTALL_HEADER_PREFIX}include/c++/v1/${dir}
-+      DESTINATION ${LIBCXX_INSTALL_HEADER_PREFIX}${CMAKE_INSTALL_INCLUDEDIR}/c++/v1/${dir}
-       COMPONENT ${CXX_HEADER_TARGET}
-       PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
-     )
-@@ -252,7 +252,7 @@ if (LIBCXX_INSTALL_HEADERS)
-   if (LIBCXX_NEEDS_SITE_CONFIG)
-     # Install the generated header as __config.
-     install(FILES ${LIBCXX_BINARY_DIR}/__generated_config
-      DESTINATION ${LIBCXX_INSTALL_HEADER_PREFIX}include/c++/v1
-+      DESTINATION ${LIBCXX_INSTALL_HEADER_PREFIX}${CMAKE_INSTALL_INCLUDEDIR}/c++/v1
-       PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
-       RENAME __config
-       COMPONENT ${CXX_HEADER_TARGET})
-diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
-index 31cd24333a5e..a419cef662b0 100644
--- a/src/CMakeLists.txt
-+++ b/src/CMakeLists.txt
-@@ -437,21 +437,21 @@ if (LIBCXX_INSTALL_LIBRARY)
-     install(TARGETS cxx_shared
-       ARCHIVE DESTINATION ${LIBCXX_INSTALL_PREFIX}${LIBCXX_INSTALL_LIBRARY_DIR} COMPONENT cxx
-       LIBRARY DESTINATION ${LIBCXX_INSTALL_PREFIX}${LIBCXX_INSTALL_LIBRARY_DIR} COMPONENT cxx
-      RUNTIME DESTINATION ${LIBCXX_INSTALL_PREFIX}bin COMPONENT cxx)
-+      RUNTIME DESTINATION ${LIBCXX_INSTALL_PREFIX}${CMAKE_INSTALL_BINDIR} COMPONENT cxx)
-   endif()
- 
-   if (LIBCXX_INSTALL_STATIC_LIBRARY)
-     install(TARGETS cxx_static
-       ARCHIVE DESTINATION ${LIBCXX_INSTALL_PREFIX}${LIBCXX_INSTALL_LIBRARY_DIR} COMPONENT cxx
-       LIBRARY DESTINATION ${LIBCXX_INSTALL_PREFIX}${LIBCXX_INSTALL_LIBRARY_DIR} COMPONENT cxx
-      RUNTIME DESTINATION ${LIBCXX_INSTALL_PREFIX}bin COMPONENT cxx)
-+      RUNTIME DESTINATION ${LIBCXX_INSTALL_PREFIX}${CMAKE_INSTALL_BINDIR} COMPONENT cxx)
-   endif()
- 
-   if(LIBCXX_INSTALL_EXPERIMENTAL_LIBRARY)
-     install(TARGETS ${LIBCXX_INSTALL_TARGETS} ${experimental_lib}
-       LIBRARY DESTINATION ${LIBCXX_INSTALL_PREFIX}${LIBCXX_INSTALL_LIBRARY_DIR} COMPONENT cxx
-       ARCHIVE DESTINATION ${LIBCXX_INSTALL_PREFIX}${LIBCXX_INSTALL_LIBRARY_DIR} COMPONENT cxx
-      RUNTIME DESTINATION ${LIBCXX_INSTALL_PREFIX}bin COMPONENT cxx)
-+      RUNTIME DESTINATION ${LIBCXX_INSTALL_PREFIX}${CMAKE_INSTALL_BINDIR} COMPONENT cxx)
-   endif()
- 
-   # NOTE: This install command must go after the cxx install command otherwise
--- a/pkgs/development/compilers/llvm/9/libcxxabi/default.nix
+++ b/pkgs/development/compilers/llvm/9/libcxxabi/default.nix
@ -1,85 +0,0 @@
-{ lib, stdenv, llvm_meta, cmake, fetch, libcxx, libunwind, llvm, version
-, enableShared ? !stdenv.hostPlatform.isStatic
-}:
-
-stdenv.mkDerivation {
-  pname = "libcxxabi";
-  inherit version;
-
-  src = fetch "libcxxabi" "1b4aiaa8cirx52vk2p5kfk57qmbqf1ipb4nqnjhdgqps9jm7iyg8";
-
-  outputs = [ "out" "dev" ];
-
-  postUnpack = ''
-    unpackFile ${libcxx.src}
-    unpackFile ${llvm.src}
-    cmakeFlags+=" -DLLVM_PATH=$PWD/$(ls -d llvm-*) -DLIBCXXABI_LIBCXX_PATH=$PWD/$(ls -d libcxx-*)"
-  '' + lib.optionalString stdenv.isDarwin ''
-    export TRIPLE=x86_64-apple-darwin
-  '' + lib.optionalString stdenv.hostPlatform.isMusl ''
-    patch -p1 -d $(ls -d libcxx-*) -i ${../../common/libcxx/libcxx-0001-musl-hacks.patch}
-  '' + lib.optionalString stdenv.hostPlatform.isWasm ''
-    patch -p1 -d $(ls -d llvm-*) -i ${../../common/libcxxabi/wasm.patch}
-  '';
-
-  patches = [
-    ../../common/libcxxabi/no-threads.patch
-    ./gnu-install-dirs.patch
-  ];
-
-  nativeBuildInputs = [ cmake ];
-  buildInputs = lib.optional (!stdenv.isDarwin && !stdenv.hostPlatform.isWasm) libunwind;
-
-  cmakeFlags = lib.optionals (stdenv.hostPlatform.useLLVM or false) [
-    "-DLLVM_ENABLE_LIBCXX=ON"
-    "-DLIBCXXABI_USE_LLVM_UNWINDER=ON"
-  ] ++ lib.optionals stdenv.hostPlatform.isWasm [
-    "-DLIBCXXABI_ENABLE_THREADS=OFF"
-    "-DLIBCXXABI_ENABLE_EXCEPTIONS=OFF"
-  ] ++ lib.optionals (!enableShared) [
-    "-DLIBCXXABI_ENABLE_SHARED=OFF"
-  ];
-
-  preInstall = lib.optionalString stdenv.isDarwin ''
-    for file in lib/*.dylib; do
-      if [ -L "$file" ]; then continue; fi
-
-      # Fix up the install name. Preserve the basename, just replace the path.
-      installName="$out/lib/$(basename $(${stdenv.cc.targetPrefix}otool -D $file | tail -n 1))"
-
-      # this should be done in CMake, but having trouble figuring out
-      # the magic combination of necessary CMake variables
-      # if you fancy a try, take a look at
-      # https://gitlab.kitware.com/cmake/community/-/wikis/doc/cmake/RPATH-handling
-      ${stdenv.cc.targetPrefix}install_name_tool -id $installName $file
-
-      # cc-wrapper passes '-lc++abi' to all c++ link steps, but that causes
-      # libcxxabi to sometimes link against a different version of itself.
-      # Here we simply make that second reference point to ourselves.
-      for other in $(${stdenv.cc.targetPrefix}otool -L $file | awk '$1 ~ "/libc\\+\\+abi" { print $1 }'); do
-        ${stdenv.cc.targetPrefix}install_name_tool -change $other $installName $file
-      done
-    done
-  '';
-
-  postInstall = ''
-    mkdir -p "$dev/include"
-    install -m 644 ../include/${if stdenv.isDarwin then "*" else "cxxabi.h"} "$dev/include"
-  '';
-
-  passthru = {
-    libName = "c++abi";
-  };
-
-  meta = llvm_meta // {
-    homepage = "https://libcxxabi.llvm.org/";
-    description = "Provides C++ standard library support";
-    longDescription = ''
-      libc++abi is a new implementation of low level support for a standard C++ library.
-    '';
-    # "All of the code in libc++abi is dual licensed under the MIT license and
-    # the UIUC License (a BSD-like license)":
-    license = with lib.licenses; [ mit ncsa ];
-    maintainers = llvm_meta.maintainers ++ [ lib.maintainers.vlstill ];
-  };
-}
--- a/pkgs/development/compilers/llvm/9/libcxxabi/gnu-install-dirs.patch
+++ b/pkgs/development/compilers/llvm/9/libcxxabi/gnu-install-dirs.patch
@ -1,34 +0,0 @@
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index aa0b124fc3c4..d74373f465c5 100644
--- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -20,6 +20,8 @@ set(CMAKE_MODULE_PATH
- if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR OR LIBCXXABI_STANDALONE_BUILD)
-   project(libcxxabi CXX C)
- 
-+  include(GNUInstallDirs)
-+
-   set(PACKAGE_NAME libcxxabi)
-   set(PACKAGE_VERSION 9.0.1)
-   set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
-@@ -181,17 +183,17 @@ string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION
- 
- if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
-   set(LIBCXXABI_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/${LLVM_DEFAULT_TARGET_TRIPLE}/c++)
-  set(LIBCXXABI_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE}/c++)
-+  set(LIBCXXABI_INSTALL_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE}/c++)
-   if(LIBCXX_LIBDIR_SUBDIR)
-     string(APPEND LIBCXXABI_LIBRARY_DIR /${LIBCXXABI_LIBDIR_SUBDIR})
-     string(APPEND LIBCXXABI_INSTALL_LIBRARY_DIR /${LIBCXXABI_LIBDIR_SUBDIR})
-   endif()
- elseif(LLVM_LIBRARY_OUTPUT_INTDIR)
-   set(LIBCXXABI_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
-  set(LIBCXXABI_INSTALL_LIBRARY_DIR lib${LIBCXXABI_LIBDIR_SUFFIX})
-+  set(LIBCXXABI_INSTALL_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR}${LIBCXXABI_LIBDIR_SUFFIX})
- else()
-   set(LIBCXXABI_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBCXXABI_LIBDIR_SUFFIX})
-  set(LIBCXXABI_INSTALL_LIBRARY_DIR lib${LIBCXXABI_LIBDIR_SUFFIX})
-+  set(LIBCXXABI_INSTALL_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR}${LIBCXXABI_LIBDIR_SUFFIX})
- endif()
- 
- set(LIBCXXABI_INSTALL_PREFIX "" CACHE STRING "Define libc++abi destination prefix.")
--- a/pkgs/development/compilers/llvm/9/libunwind/default.nix
+++ b/pkgs/development/compilers/llvm/9/libunwind/default.nix
@ -1,31 +0,0 @@
-{ lib, stdenv, llvm_meta, version, fetch, cmake, enableShared ? !stdenv.hostPlatform.isStatic
-}:
-
-stdenv.mkDerivation rec {
-  pname = "libunwind";
-  inherit version;
-
-  src = fetch pname "1wb02ha3gl6p0a321hwpll74pz5qvjr11xmjqx62g288f1m10njk";
-
-  patches = [
-    ./gnu-install-dirs.patch
-  ];
-
-  outputs = [ "out" "dev" ];
-
-  nativeBuildInputs = [ cmake ];
-
-  cmakeFlags = lib.optional (!enableShared) "-DLIBUNWIND_ENABLE_SHARED=OFF";
-
-  meta = llvm_meta // {
-    # Details: https://github.com/llvm/llvm-project/blob/main/libunwind/docs/index.rst
-    homepage = "https://clang.llvm.org/docs/Toolchain.html#unwind-library";
-    description = "LLVM's unwinder library";
-    longDescription = ''
-      The unwind library provides a family of _Unwind_* functions implementing
-      the language-neutral stack unwinding portion of the Itanium C++ ABI (Level
-      I). It is a dependency of the C++ ABI library, and sometimes is a
-      dependency of other runtimes.
-    '';
-  };
-}
--- a/pkgs/development/compilers/llvm/9/libunwind/gnu-install-dirs.patch
+++ b/pkgs/development/compilers/llvm/9/libunwind/gnu-install-dirs.patch
@ -1,34 +0,0 @@
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index df68491d686e..3b53267ae464 100644
--- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -18,6 +18,8 @@ set(CMAKE_MODULE_PATH
- if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR OR LIBUNWIND_STANDALONE_BUILD)
-   project(libunwind)
- 
-+  include(GNUInstallDirs)
-+
-   # Rely on llvm-config.
-   set(CONFIG_OUTPUT)
-   if(NOT LLVM_CONFIG_PATH)
-@@ -189,17 +191,17 @@ string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION
- 
- if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
-   set(LIBUNWIND_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/${LLVM_DEFAULT_TARGET_TRIPLE}/c++)
-  set(LIBUNWIND_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE}/c++)
-+  set(LIBUNWIND_INSTALL_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE}/c++)
-   if(LIBCXX_LIBDIR_SUBDIR)
-     string(APPEND LIBUNWIND_LIBRARY_DIR /${LIBUNWIND_LIBDIR_SUBDIR})
-     string(APPEND LIBUNWIND_INSTALL_LIBRARY_DIR /${LIBUNWIND_LIBDIR_SUBDIR})
-   endif()
- elseif(LLVM_LIBRARY_OUTPUT_INTDIR)
-   set(LIBUNWIND_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
-  set(LIBUNWIND_INSTALL_LIBRARY_DIR lib${LIBUNWIND_LIBDIR_SUFFIX})
-+  set(LIBUNWIND_INSTALL_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR}${LIBUNWIND_LIBDIR_SUFFIX})
- else()
-   set(LIBUNWIND_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBUNWIND_LIBDIR_SUFFIX})
-  set(LIBUNWIND_INSTALL_LIBRARY_DIR lib${LIBUNWIND_LIBDIR_SUFFIX})
-+  set(LIBUNWIND_INSTALL_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR}${LIBUNWIND_LIBDIR_SUFFIX})
- endif()
- 
- set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LIBUNWIND_LIBRARY_DIR})
--- a/pkgs/development/compilers/llvm/9/lld/default.nix
+++ b/pkgs/development/compilers/llvm/9/lld/default.nix
@ -1,46 +0,0 @@
-{ lib, stdenv, llvm_meta
-, buildLlvmTools
-, fetch
-, cmake
-, libxml2
-, libllvm
-, version
-}:
-
-stdenv.mkDerivation rec {
-  pname = "lld";
-  inherit version;
-
-  src = fetch pname "10hckfxpapfnh6y9apjiya2jpw9nmbbmh8ayijx89mrg7snjn9l6";
-
-  patches = [
-    ./gnu-install-dirs.patch
-  ];
-
-  nativeBuildInputs = [ cmake ];
-  buildInputs = [ libllvm libxml2 ];
-
-  cmakeFlags = [
-    "-DLLVM_CONFIG_PATH=${libllvm.dev}/bin/llvm-config${lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) "-native"}"
-  ] ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
-    "-DLLVM_TABLEGEN_EXE=${buildLlvmTools.llvm}/bin/llvm-tblgen"
-  ];
-
-  # Musl's default stack size is too small for lld to be able to link Firefox.
-  LDFLAGS = lib.optionalString stdenv.hostPlatform.isMusl "-Wl,-z,stack-size=2097152";
-
-  outputs = [ "out" "lib" "dev" ];
-
-  meta = llvm_meta // {
-    homepage = "https://lld.llvm.org/";
-    description = "The LLVM linker (unwrapped)";
-    longDescription = ''
-      LLD is a linker from the LLVM project that is a drop-in replacement for
-      system linkers and runs much faster than them. It also provides features
-      that are useful for toolchain developers.
-      The linker supports ELF (Unix), PE/COFF (Windows), Mach-O (macOS), and
-      WebAssembly in descending order of completeness. Internally, LLD consists
-      of several different linkers.
-    '';
-  };
-}
--- a/pkgs/development/compilers/llvm/9/lld/gnu-install-dirs.patch
+++ b/pkgs/development/compilers/llvm/9/lld/gnu-install-dirs.patch
@ -1,68 +0,0 @@
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 641f71c114ae..9d44c1463aff 100644
--- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -6,6 +6,8 @@ if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
-   set(CMAKE_INCLUDE_CURRENT_DIR ON)
-   set(LLD_BUILT_STANDALONE TRUE)
- 
-+  include(GNUInstallDirs)
-+
-   find_program(LLVM_CONFIG_PATH "llvm-config" DOC "Path to llvm-config binary")
-   if(NOT LLVM_CONFIG_PATH)
-     message(FATAL_ERROR "llvm-config not found: specify LLVM_CONFIG_PATH")
-@@ -202,7 +204,7 @@ include_directories(BEFORE
- 
- if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
-   install(DIRECTORY include/
-    DESTINATION include
-+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-     FILES_MATCHING
-     PATTERN "*.h"
-     PATTERN ".svn" EXCLUDE
-diff --git a/cmake/modules/AddLLD.cmake b/cmake/modules/AddLLD.cmake
-index fa48b428d26b..e7967aad3ceb 100644
--- a/cmake/modules/AddLLD.cmake
-+++ b/cmake/modules/AddLLD.cmake
-@@ -20,9 +20,9 @@ macro(add_lld_library name)
-     install(TARGETS ${name}
-       COMPONENT ${name}
-       ${export_to_lldtargets}
-      LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}
-      ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX}
-      RUNTIME DESTINATION bin)
-+      LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}
-+      ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}
-+      RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
- 
-     if (${ARG_SHARED} AND NOT CMAKE_CONFIGURATION_TYPES)
-       add_llvm_install_targets(install-${name}
-@@ -54,7 +54,7 @@ macro(add_lld_tool name)
- 
-     install(TARGETS ${name}
-       ${export_to_lldtargets}
-      RUNTIME DESTINATION bin
-+      RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-       COMPONENT ${name})
- 
-     if(NOT CMAKE_CONFIGURATION_TYPES)
-@@ -69,5 +69,5 @@ endmacro()
- macro(add_lld_symlink name dest)
-   add_llvm_tool_symlink(${name} ${dest} ALWAYS_GENERATE)
-   # Always generate install targets
-  llvm_install_symlink(${name} ${dest} ALWAYS_GENERATE)
-+  llvm_install_symlink(${name} ${dest} ${CMAKE_INSTALL_FULL_BINDIR} ALWAYS_GENERATE)
- endmacro()
-diff --git a/tools/lld/CMakeLists.txt b/tools/lld/CMakeLists.txt
-index a15e296e31df..654c2cfdb9c0 100644
--- a/tools/lld/CMakeLists.txt
-+++ b/tools/lld/CMakeLists.txt
-@@ -17,7 +17,7 @@ target_link_libraries(lld
-   )
- 
- install(TARGETS lld
-  RUNTIME DESTINATION bin)
-+  RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
- 
- if(NOT LLD_SYMLINKS_TO_CREATE)
-   set(LLD_SYMLINKS_TO_CREATE lld-link ld.lld ld64.lld wasm-ld)
--- a/pkgs/development/compilers/llvm/9/lldb/default.nix
+++ b/pkgs/development/compilers/llvm/9/lldb/default.nix
@ -1,117 +0,0 @@
-{ lib, stdenv, llvm_meta
-, fetch
-, fetchpatch
-, cmake
-, zlib
-, ncurses
-, swig
-, which
-, libedit
-, libxml2
-, libllvm
-, libclang
-, python3
-, version
-, darwin
-, makeWrapper
-, perl
-, lit
-}:
-
-stdenv.mkDerivation rec {
-  pname = "lldb";
-  inherit version;
-
-  src = fetch pname "02gb3fbz09kyw8n71218v5v77ip559x3gqbcp8y3w6n3jpbryywa";
-
-  patches = [
-    ./procfs.patch
-    ./gnu-install-dirs.patch
-
-    # Fix darwin build
-    (fetchpatch {
-      name = "lldb-use-system-debugserver-fix.patch";
-      url = "https://github.com/llvm-mirror/lldb/commit/be770754cc43da22eacdb70c6203f4582eeb011f.diff";
-      sha256 = "sha256-tKkk6sn//0Hu0nlzoKWs5fXMWc+O2JAWOEJ1ZnaLuVU=";
-      excludes = [ "packages/*" ];
-      postFetch = ''
-        substituteInPlace "$out" --replace add_lldb_tool_subdirectory add_subdirectory
-      '';
-    })
-    ./lldb-gdb-remote-no-libcompress.patch
-  ];
-
-  outputs = [ "out" "lib" "dev" ];
-
-  nativeBuildInputs = [
-    cmake python3 which swig lit makeWrapper
-  ] ++ lib.optionals stdenv.isDarwin [
-    # for scripts/generate-vers.pl
-    perl
-  ];
-
-  buildInputs = [
-    ncurses zlib libedit libxml2 libllvm
-  ] ++ lib.optionals stdenv.isDarwin [
-    darwin.libobjc
-    darwin.apple_sdk.libs.xpc
-    darwin.apple_sdk.frameworks.Foundation
-    darwin.bootstrap_cmds
-    darwin.apple_sdk.frameworks.Carbon
-    darwin.apple_sdk.frameworks.Cocoa
-    darwin.apple_sdk.frameworks.DebugSymbols
-  ];
-
-  CXXFLAGS = "-fno-rtti";
-  hardeningDisable = [ "format" ];
-
-  cmakeFlags = [
-    "-DLLDB_INCLUDE_TESTS=${if doCheck then "YES" else "NO"}"
-    "-DClang_DIR=${libclang.dev}/lib/cmake"
-    "-DLLVM_EXTERNAL_LIT=${lit}/bin/lit"
-    "-DLLDB_CODESIGN_IDENTITY=" # codesigning makes nondeterministic
-  ] ++ lib.optionals stdenv.isDarwin [
-    # Building debugserver requires the proprietary libcompression
-    "-DLLDB_USE_SYSTEM_DEBUGSERVER=ON"
-  ] ++ lib.optionals doCheck [
-    "-DLLDB_TEST_C_COMPILER=${stdenv.cc}/bin/${stdenv.cc.targetPrefix}cc"
-    "-DLLDB_TEST_CXX_COMPILER=${stdenv.cc}/bin/${stdenv.cc.targetPrefix}c++"
-  ];
-
-  doCheck = false;
-
-  doInstallCheck = true;
-
-  installCheckPhase = ''
-    if [ ! -e "$lib/${python3.sitePackages}/lldb/_lldb.so" ] ; then
-        echo "ERROR: python files not installed where expected!";
-        return 1;
-    fi
-  '';
-
-  postInstall = ''
-    wrapProgram $out/bin/lldb --prefix PYTHONPATH : $lib/${python3.sitePackages}/
-
-    # man page
-    mkdir -p $out/share/man/man1
-    install ../docs/lldb.1 -t $out/share/man/man1/
-
-    # Editor support
-    # vscode:
-    install -D ../tools/lldb-vscode/package.json $out/share/vscode/extensions/llvm-org.lldb-vscode-0.1.0/package.json
-    mkdir -p $out/share/vscode/extensions/llvm-org.lldb-vscode-0.1.0/bin
-    ln -s $out/bin/llvm-vscode $out/share/vscode/extensions/llvm-org.lldb-vscode-0.1.0/bin
-  '';
-
-  meta = llvm_meta // {
-    broken = stdenv.isDarwin && stdenv.isAarch64;
-    homepage = "https://lldb.llvm.org/";
-    description = "A next-generation high-performance debugger";
-    longDescription = ''
-      LLDB is a next generation, high-performance debugger. It is built as a set
-      of reusable components which highly leverage existing libraries in the
-      larger LLVM Project, such as the Clang expression parser and LLVM
-      disassembler.
-    '';
-  };
-}
--- a/pkgs/development/compilers/llvm/9/lldb/gnu-install-dirs.patch
+++ b/pkgs/development/compilers/llvm/9/lldb/gnu-install-dirs.patch
@ -1,105 +0,0 @@
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 5d52f6450657..a05130cf80b9 100644
--- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -14,6 +14,8 @@ set(CMAKE_MODULE_PATH
- # If we are not building as part of LLVM, build LLDB as a standalone project,
- # using LLVM as an external library.
- if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
-+  include(GNUInstallDirs)
-+
-   include(LLDBStandalone)
- endif()
- 
-diff --git a/cmake/modules/AddLLDB.cmake b/cmake/modules/AddLLDB.cmake
-index 4c99278c583b..36d3640a6afc 100644
--- a/cmake/modules/AddLLDB.cmake
-+++ b/cmake/modules/AddLLDB.cmake
-@@ -94,13 +94,13 @@ function(add_lldb_library name)
-   endif()
- 
-   if(PARAM_SHARED)
-    set(install_dest lib${LLVM_LIBDIR_SUFFIX})
-+    set(install_dest ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX})
-     if(PARAM_INSTALL_PREFIX)
-       set(install_dest ${PARAM_INSTALL_PREFIX})
-     endif()
-     # RUNTIME is relevant for DLL platforms, FRAMEWORK for macOS
-     install(TARGETS ${name} COMPONENT ${name}
-      RUNTIME DESTINATION bin
-+      RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-       LIBRARY DESTINATION ${install_dest}
-       ARCHIVE DESTINATION ${install_dest}
-       FRAMEWORK DESTINATION ${install_dest})
-diff --git a/cmake/modules/LLDBConfig.cmake b/cmake/modules/LLDBConfig.cmake
-index e1a133709ff2..357b4bb4492a 100644
--- a/cmake/modules/LLDBConfig.cmake
-+++ b/cmake/modules/LLDBConfig.cmake
-@@ -335,7 +335,7 @@ include_directories(BEFORE
- if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
-   install(DIRECTORY include/
-     COMPONENT lldb-headers
-    DESTINATION include
-+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-     FILES_MATCHING
-     PATTERN "*.h"
-     PATTERN ".svn" EXCLUDE
-@@ -345,7 +345,7 @@ if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
- 
-   install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/include/
-     COMPONENT lldb-headers
-    DESTINATION include
-+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-     FILES_MATCHING
-     PATTERN "*.h"
-     PATTERN ".svn" EXCLUDE
-diff --git a/tools/intel-features/CMakeLists.txt b/tools/intel-features/CMakeLists.txt
-index b5316540fdf3..3c3c882d503f 100644
--- a/tools/intel-features/CMakeLists.txt
-+++ b/tools/intel-features/CMakeLists.txt
-@@ -64,4 +64,4 @@ if (NOT LLDB_DISABLE_PYTHON AND LLDB_BUILD_INTEL_PT)
- endif()
- 
- install(TARGETS lldbIntelFeatures
-  LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX})
-+  LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX})
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index cdf22c4..d56fc6a 100644
--- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -146,7 +146,7 @@ if (NOT LLDB_DISABLE_PYTHON)
-                --cfgBldDir=${lldb_scripts_dir}
-                --prefix=${CMAKE_BINARY_DIR}
-                --cmakeBuildConfiguration=${CMAKE_CFG_INTDIR}
-               --lldbLibDir=lib${LLVM_LIBDIR_SUFFIX}
-+               --lldbLibDir=${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}
-                ${use_python_wrapper_from_src_dir}
-                ${use_six_py_from_system}
-         VERBATIM
-diff --git a/cmake/modules/LLDBStandalone.cmake b/cmake/modules/LLDBStandalone.cmake
-index b726797..1f057ac 100644
--- a/cmake/modules/LLDBStandalone.cmake
-+++ b/cmake/modules/LLDBStandalone.cmake
-@@ -95,7 +95,7 @@ include_directories(
-   "${CLANG_INCLUDE_DIRS}")
-
- set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
-set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX})
-+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_INSTALL_LIBDIR}/lib${LLVM_LIBDIR_SUFFIX})
- set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX})
-
- set(LLDB_BUILT_STANDALONE 1)
-diff --git a/scripts/CMakeLists.txt b/scripts/CMakeLists.txt
-index 7de7973..b70aecc 100644
--- a/scripts/CMakeLists.txt
-+++ b/scripts/CMakeLists.txt
-@@ -50,7 +50,8 @@ if(NOT LLDB_BUILD_FRAMEWORK)
-     OUTPUT_STRIP_TRAILING_WHITESPACE)
-   execute_process(
-     COMMAND ${PYTHON_EXECUTABLE}
-        -c "import distutils.sysconfig; print(distutils.sysconfig.get_python_lib(True, False, ''))"
-+        -c "import distutils.sysconfig, sys; print(distutils.sysconfig.get_python_lib(True, False, sys.argv[1]))"
-+        ${CMAKE_INSTALL_LIBDIR}/../
-     OUTPUT_VARIABLE SWIG_INSTALL_DIR
-     OUTPUT_STRIP_TRAILING_WHITESPACE)
-
--- a/pkgs/development/compilers/llvm/9/lldb/lldb-gdb-remote-no-libcompress.patch
+++ b/pkgs/development/compilers/llvm/9/lldb/lldb-gdb-remote-no-libcompress.patch
@ -1,17 +0,0 @@
-diff -ru a/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp b/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
--- a/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp	2019-12-11 14:15:30.000000000 -0500
-+++ b/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp	2021-11-26 23:44:28.000000000 -0500
-@@ -36,13 +36,6 @@
- 
- #include "llvm/ADT/StringSwitch.h"
- 
-#if defined(__APPLE__)
-#ifndef HAVE_LIBCOMPRESSION
-#define HAVE_LIBCOMPRESSION
-#endif
-#include <compression.h>
-#endif
-
- using namespace lldb;
- using namespace lldb_private;
- using namespace lldb_private::process_gdb_remote;
--- a/pkgs/development/compilers/llvm/9/lldb/procfs.patch
+++ b/pkgs/development/compilers/llvm/9/lldb/procfs.patch
@ -1,31 +0,0 @@
--- a/source/Plugins/Process/Linux/Procfs.h
-+++ b/source/Plugins/Process/Linux/Procfs.h
-@@ -11,21 +11,12 @@
- // sys/procfs.h on Android/Linux for all supported architectures.
- 
- #include <sys/ptrace.h>
-+#include <asm/ptrace.h>
- 
-#ifdef __ANDROID__
-#if defined(__arm64__) || defined(__aarch64__)
-typedef unsigned long elf_greg_t;
-typedef elf_greg_t
-    elf_gregset_t[(sizeof(struct user_pt_regs) / sizeof(elf_greg_t))];
-typedef struct user_fpsimd_state elf_fpregset_t;
-#ifndef NT_FPREGSET
-#define NT_FPREGSET NT_PRFPREG
-#endif // NT_FPREGSET
-#elif defined(__mips__)
-#ifndef NT_FPREGSET
-#define NT_FPREGSET NT_PRFPREG
-#endif // NT_FPREGSET
-#endif
-#else // __ANDROID__
-+#if !defined(__GLIBC__) && defined(__powerpc__)
-+#define pt_regs musl_pt_regs
-+#include <sys/procfs.h>
-+#undef pt_regs
-+#else
- #include <sys/procfs.h>
-#endif // __ANDROID__
-+#endif
--- a/pkgs/development/compilers/llvm/9/llvm/default.nix
+++ b/pkgs/development/compilers/llvm/9/llvm/default.nix
@ -1,346 +0,0 @@
-{ lib, stdenv, llvm_meta
-, pkgsBuildBuild
-, fetch
-, fetchpatch
-, cmake
-, python3
-, libffi
-, enableGoldPlugin ? libbfd.hasPluginAPI
-, libbfd
-, libpfm
-, libxml2
-, ncurses
-, version
-, release_version
-, zlib
-, buildLlvmTools
-, debugVersion ? false
-, doCheck ? stdenv.isLinux && (!stdenv.isx86_32) && (!stdenv.hostPlatform.isRiscV)
-  && (stdenv.hostPlatform == stdenv.buildPlatform)
-, enableManpages ? false
-, enableSharedLibraries ? !stdenv.hostPlatform.isStatic
-# broken for Ampere eMAG 8180 (c2.large.arm on Packet) #56245
-# broken for the armv7l builder
-, enablePFM ? stdenv.isLinux && !stdenv.hostPlatform.isAarch
-, enablePolly ? false
-}:
-
-let
-  inherit (lib) optional optionals optionalString;
-
-  # Used when creating a version-suffixed symlink of libLLVM.dylib
-  shortVersion = with lib;
-    concatStringsSep "." (take 1 (splitString "." release_version));
-
-  # Ordinarily we would just the `doCheck` and `checkDeps` functionality
-  # `mkDerivation` gives us to manage our test dependencies (instead of breaking
-  # out `doCheck` as a package level attribute).
-  #
-  # Unfortunately `lit` does not forward `$PYTHONPATH` to children processes, in
-  # particular the children it uses to do feature detection.
-  #
-  # This means that python deps we add to `checkDeps` (which the python
-  # interpreter is made aware of via `$PYTHONPATH` – populated by the python
-  # setup hook) are not picked up by `lit` which causes it to skip tests.
-  #
-  # Adding `python3.withPackages (ps: [ ... ])` to `checkDeps` also doesn't work
-  # because this package is shadowed in `$PATH` by the regular `python3`
-  # package.
-  #
-  # So, we "manually" assemble one python derivation for the package to depend
-  # on, taking into account whether checks are enabled or not:
-  python = if doCheck then
-    let
-      checkDeps = ps: with ps; [ psutil ];
-    in python3.withPackages checkDeps
-  else python3;
-
-in stdenv.mkDerivation (rec {
-  pname = "llvm";
-  inherit version;
-
-  src = fetch pname "16hwp3qa54c3a3v7h8nlw0fh5criqh0hlr1skybyk0cz70gyx880";
-  polly_src = fetch "polly" "1kqg0isv0kicnylrdp5iajlgd6alc0zx1l3cxc9hs8r3z6fwcjls";
-
-  unpackPhase = ''
-    unpackFile $src
-    mv llvm-${version}* llvm
-    sourceRoot=$PWD/llvm
-  '' + optionalString enablePolly ''
-    unpackFile $polly_src
-    mv polly-* $sourceRoot/tools/polly
-  '';
-
-  outputs = [ "out" "lib" "dev" "python" ];
-
-  nativeBuildInputs = [ cmake python ]
-    ++ optionals enableManpages [ python3.pkgs.sphinx python3.pkgs.recommonmark ];
-
-  buildInputs = [ libxml2 libffi ]
-    ++ optional enablePFM libpfm; # exegesis
-
-  propagatedBuildInputs = [ ncurses zlib ];
-
-  patches = [
-    # When cross-compiling we configure llvm-config-native with an approximation
-    # of the flags used for the normal LLVM build. To avoid the need for building
-    # a native libLLVM.so (which would fail) we force llvm-config to be linked
-    # statically against the necessary LLVM components always.
-    ../../common/llvm/llvm-config-link-static.patch
-
-    ./gnu-install-dirs.patch
-    # Force a test to evaluate the saved benchmark for a CPU for which LLVM has
-    # an execution model. See NixOS/nixpkgs#119673.
-    ./exegesis-force-bdver2.patch
-
-    # Fix missing includes for GCC 11
-    (fetchpatch {
-      name = "headers-gcc-11.patch";
-      url = "https://github.com/llvm/llvm-project/commit/b498303066a63a203d24f739b2d2e0e56dca70d1.patch";
-      sha256 = "0nh123kld0dgz2h941lng331dkj3wbm5lfxm375k1f569gv83hlk";
-      stripLen = 1;
-    })
-
-    # Fix invalid std::string(nullptr) for GCC 12
-    (fetchpatch {
-      name = "nvptx-gcc-12.patch";
-      url = "https://github.com/llvm/llvm-project/commit/99e64623ec9b31def9375753491cc6093c831809.patch";
-      sha256 = "0zjfjgavqzi2ypqwqnlvy6flyvdz8hi1anwv0ybwnm2zqixg7za3";
-      stripLen = 1;
-    })
-
-    # Fix musl build.
-    (fetchpatch {
-      url = "https://github.com/llvm/llvm-project/commit/5cd554303ead0f8891eee3cd6d25cb07f5a7bf67.patch";
-      relative = "llvm";
-      hash = "sha256-XPbvNJ45SzjMGlNUgt/IgEvM2dHQpDOe6woUJY+nUYA=";
-    })
-  ] ++ lib.optionals enablePolly [
-    ./gnu-install-dirs-polly.patch
-    # Add missing isl header includess required to build LLVM 9 + Polly with clang 16.
-    (fetchpatch {
-      name = "polly-ppcg-isl-headers.patch";
-      url = "https://repo.or.cz/ppcg.git/patch/098ba285306114dc71497f7b51c357f69c9b4472";
-      hash = "sha256-c9L30rDROYAMbUSuaK9U/ixyFMlH/Sa1n+VgLODzSCQ=";
-      extraPrefix = "tools/polly/lib/External/ppcg/";
-      stripLen = 1;
-    })
-  ];
-
-  postPatch = optionalString stdenv.isDarwin ''
-    substituteInPlace cmake/modules/AddLLVM.cmake \
-      --replace 'set(_install_name_dir INSTALL_NAME_DIR "@rpath")' "set(_install_name_dir)" \
-      --replace 'set(_install_rpath "@loader_path/../''${CMAKE_INSTALL_LIBDIR}" ''${extra_libdir})' ""
-  '' + ''
-    # FileSystem permissions tests fail with various special bits
-    substituteInPlace unittests/Support/CMakeLists.txt \
-      --replace "Path.cpp" ""
-    rm unittests/Support/Path.cpp
-  '' + optionalString stdenv.hostPlatform.isMusl ''
-    patch -p1 -i ${../../common/llvm/TLI-musl.patch}
-    substituteInPlace unittests/Support/CMakeLists.txt \
-      --replace "add_subdirectory(DynamicLibrary)" ""
-    rm unittests/Support/DynamicLibrary/DynamicLibraryTest.cpp
-    # valgrind unhappy with musl or glibc, but fails w/musl only
-    rm test/CodeGen/AArch64/wineh4.mir
-  '' + optionalString stdenv.hostPlatform.isAarch32 ''
-    # skip failing X86 test cases on 32-bit ARM
-    rm test/DebugInfo/X86/convert-debugloc.ll
-    rm test/DebugInfo/X86/convert-inlined.ll
-    rm test/DebugInfo/X86/convert-linked.ll
-    rm test/tools/dsymutil/X86/op-convert.test
-  '' + optionalString (stdenv.hostPlatform.system == "armv6l-linux") ''
-    # Seems to require certain floating point hardware (NEON?)
-    rm test/ExecutionEngine/frem.ll
-  '' + ''
-    patchShebangs test/BugPoint/compile-custom.ll.py
-
-    # Fix test so that no extra locale files are needed
-    substituteInPlace test/tools/llvm-ar/mri-utf8.test \
-      --replace en_US.UTF-8 C.UTF-8
-
-    # Fix x86 gold test on non-x86 platforms
-    # (similar fix made to others in this directory previously, FWIW)
-    patch -p1 -i  ${./fix-test-on-non-x86-like-others.patch}
-  '' + ''
-    # Tweak tests to ignore namespace part of type to support
-    # gcc-12: https://gcc.gnu.org/PR103598.
-    # The change below mangles strings like:
-    #    CHECK-NEXT: Starting llvm::Function pass manager run.
-    # to:
-    #    CHECK-NEXT: Starting {{.*}}Function pass manager run.
-    for f in \
-      test/Other/new-pass-manager.ll \
-      test/Other/new-pm-defaults.ll \
-      test/Other/new-pm-lto-defaults.ll \
-      test/Other/new-pm-thinlto-defaults.ll \
-      test/Other/pass-pipeline-parsing.ll \
-      test/Transforms/Inline/cgscc-incremental-invalidate.ll \
-      test/Transforms/Inline/clear-analyses.ll \
-      test/Transforms/LoopUnroll/unroll-loop-invalidation.ll \
-      test/Transforms/SCCP/ipsccp-preserve-analysis.ll \
-      test/Transforms/SCCP/preserve-analysis.ll \
-      test/Transforms/SROA/dead-inst.ll \
-      test/tools/gold/X86/new-pm.ll \
-      ; do
-      echo "PATCH: $f"
-      substituteInPlace $f \
-        --replace 'Starting llvm::' 'Starting {{.*}}' \
-        --replace 'Finished llvm::' 'Finished {{.*}}'
-    done
-  '';
-
-  preConfigure = ''
-    # Workaround for configure flags that need to have spaces
-    cmakeFlagsArray+=(
-      -DLLVM_LIT_ARGS='-svj''${NIX_BUILD_CORES} --no-progress-bar'
-    )
-  '';
-
-  # hacky fix: created binaries need to be run before installation
-  preBuild = ''
-    mkdir -p $out/
-    ln -sv $PWD/lib $out
-  '';
-
-  hardeningDisable = [ "trivialautovarinit" ];
-
-  cmakeBuildType = if debugVersion then "Debug" else "Release";
-
-  cmakeFlags = with stdenv; let
-    # These flags influence llvm-config's BuildVariables.inc in addition to the
-    # general build. We need to make sure these are also passed via
-    # CROSS_TOOLCHAIN_FLAGS_NATIVE when cross-compiling or llvm-config-native
-    # will return different results from the cross llvm-config.
-    #
-    # Some flags don't need to be repassed because LLVM already does so (like
-    # CMAKE_BUILD_TYPE), others are irrelevant to the result.
-    flagsForLlvmConfig = [
-      "-DLLVM_INSTALL_CMAKE_DIR=${placeholder "dev"}/lib/cmake/llvm/"
-      "-DLLVM_ENABLE_RTTI=ON"
-    ] ++ optionals enableSharedLibraries [
-      "-DLLVM_LINK_LLVM_DYLIB=ON"
-    ];
-  in flagsForLlvmConfig ++ [
-    "-DLLVM_INSTALL_UTILS=ON"  # Needed by rustc
-    "-DLLVM_BUILD_TESTS=${if doCheck then "ON" else "OFF"}"
-    "-DLLVM_ENABLE_FFI=ON"
-    "-DLLVM_HOST_TRIPLE=${stdenv.hostPlatform.config}"
-    "-DLLVM_DEFAULT_TARGET_TRIPLE=${stdenv.hostPlatform.config}"
-    "-DLLVM_ENABLE_DUMP=ON"
-  ] ++ optionals enableManpages [
-    "-DLLVM_BUILD_DOCS=ON"
-    "-DLLVM_ENABLE_SPHINX=ON"
-    "-DSPHINX_OUTPUT_MAN=ON"
-    "-DSPHINX_OUTPUT_HTML=OFF"
-    "-DSPHINX_WARNINGS_AS_ERRORS=OFF"
-  ] ++ optionals (enableGoldPlugin) [
-    "-DLLVM_BINUTILS_INCDIR=${libbfd.dev}/include"
-  ] ++ optionals (isDarwin) [
-    "-DLLVM_ENABLE_LIBCXX=ON"
-    "-DCAN_TARGET_i386=false"
-  ] ++ optionals ((stdenv.hostPlatform != stdenv.buildPlatform) && !(stdenv.buildPlatform.canExecute stdenv.hostPlatform)) [
-    "-DCMAKE_CROSSCOMPILING=True"
-    "-DLLVM_TABLEGEN=${buildLlvmTools.llvm}/bin/llvm-tblgen"
-    (
-      let
-        nativeCC = pkgsBuildBuild.targetPackages.stdenv.cc;
-        nativeBintools = nativeCC.bintools.bintools;
-        nativeToolchainFlags = [
-          "-DCMAKE_C_COMPILER=${nativeCC}/bin/${nativeCC.targetPrefix}cc"
-          "-DCMAKE_CXX_COMPILER=${nativeCC}/bin/${nativeCC.targetPrefix}c++"
-          "-DCMAKE_AR=${nativeBintools}/bin/${nativeBintools.targetPrefix}ar"
-          "-DCMAKE_STRIP=${nativeBintools}/bin/${nativeBintools.targetPrefix}strip"
-          "-DCMAKE_RANLIB=${nativeBintools}/bin/${nativeBintools.targetPrefix}ranlib"
-        ];
-        # We need to repass the custom GNUInstallDirs values, otherwise CMake
-        # will choose them for us, leading to wrong results in llvm-config-native
-        nativeInstallFlags = [
-          "-DCMAKE_INSTALL_PREFIX=${placeholder "out"}"
-          "-DCMAKE_INSTALL_BINDIR=${placeholder "out"}/bin"
-          "-DCMAKE_INSTALL_INCLUDEDIR=${placeholder "dev"}/include"
-          "-DCMAKE_INSTALL_LIBDIR=${placeholder "lib"}/lib"
-          "-DCMAKE_INSTALL_LIBEXECDIR=${placeholder "lib"}/libexec"
-        ];
-      in "-DCROSS_TOOLCHAIN_FLAGS_NATIVE:list="
-      + lib.concatStringsSep ";" (lib.concatLists [
-        flagsForLlvmConfig
-        nativeToolchainFlags
-        nativeInstallFlags
-      ])
-    )
-  ];
-
-  postBuild = ''
-    rm -fR $out
-  '';
-
-  preCheck = ''
-    export LD_LIBRARY_PATH=$LD_LIBRARY_PATH''${LD_LIBRARY_PATH:+:}$PWD/lib
-  '';
-
-  postInstall = ''
-    mkdir -p $python/share
-    mv $out/share/opt-viewer $python/share/opt-viewer
-    moveToOutput "bin/llvm-config*" "$dev"
-    substituteInPlace "$dev/lib/cmake/llvm/LLVMExports-${if debugVersion then "debug" else "release"}.cmake" \
-      --replace "\''${_IMPORT_PREFIX}/lib/lib" "$lib/lib/lib" \
-      --replace "$out/bin/llvm-config" "$dev/bin/llvm-config"
-    substituteInPlace "$dev/lib/cmake/llvm/LLVMConfig.cmake" \
-      --replace 'set(LLVM_BINARY_DIR "''${LLVM_INSTALL_PREFIX}")' 'set(LLVM_BINARY_DIR "''${LLVM_INSTALL_PREFIX}'"$lib"'")'
-  ''
-  + optionalString (stdenv.isDarwin && enableSharedLibraries) ''
-    ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${shortVersion}.dylib
-    ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${release_version}.dylib
-  ''
-  + optionalString (stdenv.buildPlatform != stdenv.hostPlatform) ''
-    cp NATIVE/bin/llvm-config $dev/bin/llvm-config-native
-  '';
-
-  inherit doCheck;
-
-  checkTarget = "check-all";
-
-  requiredSystemFeatures = [ "big-parallel" ];
-  meta = llvm_meta // {
-    homepage = "https://llvm.org/";
-    description = "A collection of modular and reusable compiler and toolchain technologies";
-    longDescription = ''
-      The LLVM Project is a collection of modular and reusable compiler and
-      toolchain technologies. Despite its name, LLVM has little to do with
-      traditional virtual machines. The name "LLVM" itself is not an acronym; it
-      is the full name of the project.
-      LLVM began as a research project at the University of Illinois, with the
-      goal of providing a modern, SSA-based compilation strategy capable of
-      supporting both static and dynamic compilation of arbitrary programming
-      languages. Since then, LLVM has grown to be an umbrella project consisting
-      of a number of subprojects, many of which are being used in production by
-      a wide variety of commercial and open source projects as well as being
-      widely used in academic research. Code in the LLVM project is licensed
-      under the "Apache 2.0 License with LLVM exceptions".
-    '';
-  };
-} // lib.optionalAttrs enableManpages {
-  pname = "llvm-manpages";
-
-  buildPhase = ''
-    make docs-llvm-man
-  '';
-
-  propagatedBuildInputs = [];
-
-  installPhase = ''
-    make -C docs install
-  '';
-
-  postPatch = null;
-  postInstall = null;
-
-  outputs = [ "out" ];
-
-  doCheck = false;
-
-  meta = llvm_meta // {
-    description = "man pages for LLVM ${version}";
-  };
-})
--- a/pkgs/development/compilers/llvm/9/llvm/exegesis-force-bdver2.patch
+++ b/pkgs/development/compilers/llvm/9/llvm/exegesis-force-bdver2.patch
@ -1,11 +0,0 @@
-diff --git a/test/tools/llvm-exegesis/X86/uops-CMOV16rm-noreg.s b/test/tools/llvm-exegesis/X86/uops-CMOV16rm-noreg.s
-index 3fc1f31d54dc..a4c9bdd92131 100644
--- a/test/tools/llvm-exegesis/X86/uops-CMOV16rm-noreg.s
-+++ b/test/tools/llvm-exegesis/X86/uops-CMOV16rm-noreg.s
-@@ -1,5 +1,6 @@
- # RUN: llvm-exegesis -mode=uops -opcode-name=CMOV16rm  -benchmarks-file=%t.CMOV16rm-uops.yaml
- # RUN: FileCheck -check-prefixes=CHECK-YAML -input-file=%t.CMOV16rm-uops.yaml %s
-+# RUN: sed -i 's,cpu_name:.*,cpu_name: bdver2,g' %t.CMOV16rm-uops.yaml
- # RUN: llvm-exegesis -mcpu=bdver2 -mode=analysis -benchmarks-file=%t.CMOV16rm-uops.yaml -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.1 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS %s
- 
- # https://bugs.llvm.org/show_bug.cgi?id=41448
--- a/pkgs/development/compilers/llvm/9/llvm/fix-test-on-non-x86-like-others.patch
+++ b/pkgs/development/compilers/llvm/9/llvm/fix-test-on-non-x86-like-others.patch
@ -1,23 +0,0 @@
-Index: test/tools/gold/X86/linkonce_odr_unnamed_addr.ll
-===================================================================
-diff --git a/test/tools/gold/X86/linkonce_odr_unnamed_addr.ll b/llvm/trunk/test/tools/gold/X86/linkonce_odr_unnamed_addr.ll
--- a/test/tools/gold/X86/linkonce_odr_unnamed_addr.ll	(revision 372333)
-+++ b/test/tools/gold/X86/linkonce_odr_unnamed_addr.ll	(working copy)
-@@ -3,7 +3,7 @@
- 
- ; RUN: opt -module-summary %s -o %t.o
- ; RUN: opt -module-summary %p/Inputs/linkonce_odr_unnamed_addr.ll -o %t2.o
-; RUN: %gold -plugin %llvmshlibdir/LLVMgold%shlibext \
-+; RUN: %gold -m elf_x86_64 -plugin %llvmshlibdir/LLVMgold%shlibext \
- ; RUN:    --plugin-opt=save-temps \
- ; RUN:    %t.o %t2.o -o %t3.o
- ; RUN: llvm-dis %t.o.1.promote.bc -o - | FileCheck %s
-@@ -11,7 +11,7 @@
- ; Now test when one module is a native object. In that case we must be
- ; conservative and not auto hide.
- ; RUN: llc %p/Inputs/linkonce_odr_unnamed_addr.ll -o %t2native.o -filetype=obj
-; RUN: %gold -plugin %llvmshlibdir/LLVMgold%shlibext \
-+; RUN: %gold -m elf_x86_64 -plugin %llvmshlibdir/LLVMgold%shlibext \
- ; RUN:    --plugin-opt=save-temps \
- ; RUN:    %t.o %t2native.o -o %t3.o
- ; RUN: llvm-dis %t.o.1.promote.bc -o - | FileCheck %s --check-prefix=NOSUMMARY
--- a/pkgs/development/compilers/llvm/9/llvm/gnu-install-dirs-polly.patch
+++ b/pkgs/development/compilers/llvm/9/llvm/gnu-install-dirs-polly.patch
@ -1,106 +0,0 @@
-diff --git a/tools/polly/CMakeLists.txt b/tools/polly/CMakeLists.txt
-index 9939097f743e..8cc538da912a 100644
--- a/tools/polly/CMakeLists.txt
-+++ b/tools/polly/CMakeLists.txt
-@@ -2,7 +2,11 @@
- if (NOT DEFINED LLVM_MAIN_SRC_DIR)
-   project(Polly)
-   cmake_minimum_required(VERSION 3.4.3)
-+endif()
-+
-+include(GNUInstallDirs)
- 
-+if (NOT DEFINED LLVM_MAIN_SRC_DIR)
-   # Where is LLVM installed?
-   find_package(LLVM CONFIG REQUIRED)
-   set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${LLVM_CMAKE_DIR})
-@@ -145,14 +149,14 @@ include_directories(
- 
- if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
-   install(DIRECTORY include/
-    DESTINATION include
-+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-     FILES_MATCHING
-     PATTERN "*.h"
-     PATTERN ".svn" EXCLUDE
-     )
- 
-   install(DIRECTORY ${POLLY_BINARY_DIR}/include/
-    DESTINATION include
-+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-     FILES_MATCHING
-     PATTERN "*.h"
-     PATTERN "CMakeFiles" EXCLUDE
-diff --git a/tools/polly/cmake/CMakeLists.txt b/tools/polly/cmake/CMakeLists.txt
-index 211f95512717..f9e04a4844b6 100644
--- a/tools/polly/cmake/CMakeLists.txt
-+++ b/tools/polly/cmake/CMakeLists.txt
-@@ -79,18 +79,18 @@ file(GENERATE
- 
- # Generate PollyConfig.cmake for the install tree.
- unset(POLLY_EXPORTS)
-set(POLLY_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
-+set(POLLY_INSTALL_PREFIX "")
- set(POLLY_CONFIG_LLVM_CMAKE_DIR "${LLVM_BINARY_DIR}/${LLVM_INSTALL_PACKAGE_DIR}")
-set(POLLY_CONFIG_CMAKE_DIR "${POLLY_INSTALL_PREFIX}/${POLLY_INSTALL_PACKAGE_DIR}")
-set(POLLY_CONFIG_LIBRARY_DIRS "${POLLY_INSTALL_PREFIX}/lib${LLVM_LIBDIR_SUFFIX}")
-+set(POLLY_CONFIG_CMAKE_DIR "${POLLY_INSTALL_PREFIX}${CMAKE_INSTALL_PREFIX}/${POLLY_INSTALL_PACKAGE_DIR}")
-+set(POLLY_CONFIG_LIBRARY_DIRS "${POLLY_INSTALL_PREFIX}${CMAKE_INSTALL_FULL_LIBDIR}${LLVM_LIBDIR_SUFFIX}")
- if (POLLY_BUNDLED_ISL)
-   set(POLLY_CONFIG_INCLUDE_DIRS
-    "${POLLY_INSTALL_PREFIX}/include"
-    "${POLLY_INSTALL_PREFIX}/include/polly"
-+    "${POLLY_INSTALL_PREFIX}${CMAKE_INSTALL_FULL_LIBDIR}"
-+    "${POLLY_INSTALL_PREFIX}${CMAKE_INSTALL_FULL_LIBDIR}/polly"
-     )
- else()
-   set(POLLY_CONFIG_INCLUDE_DIRS
-    "${POLLY_INSTALL_PREFIX}/include"
-+    "${POLLY_INSTALL_PREFIX}${CMAKE_INSTALL_FULL_INCLUDEDIR}"
-     ${ISL_INCLUDE_DIRS}
-     )
- endif()
-@@ -100,12 +100,12 @@ endif()
- foreach(tgt IN LISTS POLLY_CONFIG_EXPORTED_TARGETS)
-   get_target_property(tgt_type ${tgt} TYPE)
-   if (tgt_type STREQUAL "EXECUTABLE")
-    set(tgt_prefix "bin/")
-+    set(tgt_prefix "${CMAKE_INSTALL_BINDIR}/")
-   else()
-    set(tgt_prefix "lib/")
-+    set(tgt_prefix "${CMAKE_INSTALL_LIBDIR}/")
-   endif()
- 
-  set(tgt_path "${CMAKE_INSTALL_PREFIX}/${tgt_prefix}$<TARGET_FILE_NAME:${tgt}>")
-+  set(tgt_path "${tgt_prefix}$<TARGET_FILE_NAME:${tgt}>")
-   file(RELATIVE_PATH tgt_path ${POLLY_CONFIG_CMAKE_DIR} ${tgt_path})
- 
-   if (NOT tgt_type STREQUAL "INTERFACE_LIBRARY")
-diff --git a/tools/polly/cmake/polly_macros.cmake b/tools/polly/cmake/polly_macros.cmake
-index e48203871884..5bc8a2a52541 100644
--- a/tools/polly/cmake/polly_macros.cmake
-+++ b/tools/polly/cmake/polly_macros.cmake
-@@ -44,8 +44,8 @@ macro(add_polly_library name)
-   if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY OR ${name} STREQUAL "LLVMPolly")
-     install(TARGETS ${name}
-       EXPORT LLVMExports
-      LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}
-      ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX})
-+	  LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}
-+      ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX})
-   endif()
-   set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${name})
- endmacro(add_polly_library)
-diff --git a/tools/polly/lib/External/CMakeLists.txt b/tools/polly/lib/External/CMakeLists.txt
-index 8ffd984e542b..261cc19f3238 100644
--- a/tools/polly/lib/External/CMakeLists.txt
-+++ b/tools/polly/lib/External/CMakeLists.txt
-@@ -274,7 +274,7 @@ if (POLLY_BUNDLED_ISL)
-     install(DIRECTORY
-       ${ISL_SOURCE_DIR}/include/
-       ${ISL_BINARY_DIR}/include/
-      DESTINATION include/polly
-+      DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/polly
-       FILES_MATCHING
-       PATTERN "*.h"
-       PATTERN "CMakeFiles" EXCLUDE
--- a/pkgs/development/compilers/llvm/9/llvm/gnu-install-dirs.patch
+++ b/pkgs/development/compilers/llvm/9/llvm/gnu-install-dirs.patch
@ -1,395 +0,0 @@
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index b9a10685b99f..c2750500df99 100644
--- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -242,15 +242,21 @@ if (CMAKE_BUILD_TYPE AND
-   message(FATAL_ERROR "Invalid value for CMAKE_BUILD_TYPE: ${CMAKE_BUILD_TYPE}")
- endif()
- 
-+include(GNUInstallDirs)
-+
- set(LLVM_LIBDIR_SUFFIX "" CACHE STRING "Define suffix of library directory name (32/64)" )
- 
-set(LLVM_TOOLS_INSTALL_DIR "bin" CACHE STRING "Path for binary subdirectory (defaults to 'bin')")
-+set(LLVM_TOOLS_INSTALL_DIR "${CMAKE_INSTALL_BINDIR}" CACHE STRING
-+    "Path for binary subdirectory (defaults to 'bin')")
- mark_as_advanced(LLVM_TOOLS_INSTALL_DIR)
- 
- set(LLVM_UTILS_INSTALL_DIR "${LLVM_TOOLS_INSTALL_DIR}" CACHE STRING
-     "Path to install LLVM utilities (enabled by LLVM_INSTALL_UTILS=ON) (defaults to LLVM_TOOLS_INSTALL_DIR)")
- mark_as_advanced(LLVM_UTILS_INSTALL_DIR)
- 
-+set(LLVM_INSTALL_CMAKE_DIR "${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}/cmake/llvm" CACHE STRING
-+	"Path for CMake subdirectory (defaults to lib/cmake/llvm)" )
-+
- # They are used as destination of target generators.
- set(LLVM_RUNTIME_OUTPUT_INTDIR ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/bin)
- set(LLVM_LIBRARY_OUTPUT_INTDIR ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX})
-@@ -534,9 +540,9 @@ option (LLVM_ENABLE_SPHINX "Use Sphinx to generate llvm documentation." OFF)
- option (LLVM_ENABLE_OCAMLDOC "Build OCaml bindings documentation." ON)
- option (LLVM_ENABLE_BINDINGS "Build bindings." ON)
- 
-set(LLVM_INSTALL_DOXYGEN_HTML_DIR "share/doc/llvm/doxygen-html"
-+set(LLVM_INSTALL_DOXYGEN_HTML_DIR "${CMAKE_INSTALL_DOCDIR}/${project}/doxygen-html"
-     CACHE STRING "Doxygen-generated HTML documentation install directory")
-set(LLVM_INSTALL_OCAMLDOC_HTML_DIR "share/doc/llvm/ocaml-html"
-+set(LLVM_INSTALL_OCAMLDOC_HTML_DIR "${CMAKE_INSTALL_DOCDIR}/${project}/ocaml-html"
-     CACHE STRING "OCamldoc-generated HTML documentation install directory")
- 
- option (LLVM_BUILD_EXTERNAL_COMPILER_RT
-@@ -1002,7 +1008,7 @@ endif()
- 
- if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
-   install(DIRECTORY include/llvm include/llvm-c
-    DESTINATION include
-+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-     COMPONENT llvm-headers
-     FILES_MATCHING
-     PATTERN "*.def"
-@@ -1014,7 +1020,7 @@ if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
-     )
- 
-   install(DIRECTORY ${LLVM_INCLUDE_DIR}/llvm ${LLVM_INCLUDE_DIR}/llvm-c
-    DESTINATION include
-+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-     COMPONENT llvm-headers
-     FILES_MATCHING
-     PATTERN "*.def"
-@@ -1029,13 +1035,13 @@ if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
- 
-   if (LLVM_INSTALL_MODULEMAPS)
-     install(DIRECTORY include/llvm include/llvm-c
-            DESTINATION include
-+            DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-             COMPONENT llvm-headers
-             FILES_MATCHING
-             PATTERN "module.modulemap"
-             )
-     install(FILES include/llvm/module.install.modulemap
-            DESTINATION include/llvm
-+            DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/llvm
-             COMPONENT llvm-headers
-             RENAME "module.extern.modulemap"
-             )
-diff --git a/cmake/modules/AddLLVM.cmake b/cmake/modules/AddLLVM.cmake
-index 619e986b8aa0..842b4f71d07e 100644
--- a/cmake/modules/AddLLVM.cmake
-+++ b/cmake/modules/AddLLVM.cmake
-@@ -697,9 +697,9 @@ macro(add_llvm_library name)
- 
-       install(TARGETS ${name}
-               ${export_to_llvmexports}
-              LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT ${name}
-              ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT ${name}
-              RUNTIME DESTINATION bin COMPONENT ${name})
-+              LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX} COMPONENT ${name}
-+              ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX} COMPONENT ${name}
-+              RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT ${name})
- 
-       if (NOT LLVM_ENABLE_IDE)
-         add_llvm_install_targets(install-${name}
-@@ -930,7 +930,7 @@ macro(add_llvm_example name)
-   endif()
-   add_llvm_executable(${name} ${ARGN})
-   if( LLVM_BUILD_EXAMPLES )
-    install(TARGETS ${name} RUNTIME DESTINATION examples)
-+    install(TARGETS ${name} RUNTIME DESTINATION ${CMAKE_INSTALL_DOCDIR}/examples)
-   endif()
-   set_target_properties(${name} PROPERTIES FOLDER "Examples")
- endmacro(add_llvm_example name)
-@@ -1485,7 +1485,7 @@ function(llvm_install_library_symlink name dest type)
-   set(full_name ${CMAKE_${type}_LIBRARY_PREFIX}${name}${CMAKE_${type}_LIBRARY_SUFFIX})
-   set(full_dest ${CMAKE_${type}_LIBRARY_PREFIX}${dest}${CMAKE_${type}_LIBRARY_SUFFIX})
- 
-  set(output_dir lib${LLVM_LIBDIR_SUFFIX})
-+  set(output_dir ${CMAKE_INSTALL_FULL_LIBDIR}${LLVM_LIBDIR_SUFFIX})
-   if(WIN32 AND "${type}" STREQUAL "SHARED")
-     set(output_dir bin)
-   endif()
-@@ -1501,7 +1501,7 @@ function(llvm_install_library_symlink name dest type)
-   endif()
- endfunction()
- 
-function(llvm_install_symlink name dest)
-+function(llvm_install_symlink name dest output_dir)
-   cmake_parse_arguments(ARG "ALWAYS_GENERATE" "COMPONENT" "" ${ARGN})
-   foreach(path ${CMAKE_MODULE_PATH})
-     if(EXISTS ${path}/LLVMInstallSymlink.cmake)
-@@ -1524,7 +1524,7 @@ function(llvm_install_symlink name dest)
-   set(full_dest ${dest}${CMAKE_EXECUTABLE_SUFFIX})
- 
-   install(SCRIPT ${INSTALL_SYMLINK}
-          CODE "install_symlink(${full_name} ${full_dest} ${LLVM_TOOLS_INSTALL_DIR})"
-+          CODE "install_symlink(${full_name} ${full_dest} ${output_dir})"
-           COMPONENT ${component})
- 
-   if (NOT LLVM_ENABLE_IDE AND NOT ARG_ALWAYS_GENERATE)
-@@ -1606,7 +1606,8 @@ function(add_llvm_tool_symlink link_name target)
-     endif()
- 
-     if ((TOOL_IS_TOOLCHAIN OR NOT LLVM_INSTALL_TOOLCHAIN_ONLY) AND LLVM_BUILD_TOOLS)
-      llvm_install_symlink(${link_name} ${target})
-+      GNUInstallDirs_get_absolute_install_dir(output_dir LLVM_TOOLS_INSTALL_DIR)
-+      llvm_install_symlink(${link_name} ${target} ${output_dir})
-     endif()
-   endif()
- endfunction()
-@@ -1728,9 +1729,9 @@ function(llvm_setup_rpath name)
- 
-   if (APPLE)
-     set(_install_name_dir INSTALL_NAME_DIR "@rpath")
-    set(_install_rpath "@loader_path/../lib" ${extra_libdir})
-+    set(_install_rpath "@loader_path/../${CMAKE_INSTALL_LIBDIR}" ${extra_libdir})
-   elseif(UNIX)
-    set(_install_rpath "\$ORIGIN/../lib${LLVM_LIBDIR_SUFFIX}" ${extra_libdir})
-+    set(_install_rpath "\$ORIGIN/../${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}" ${extra_libdir})
-     if(${CMAKE_SYSTEM_NAME} MATCHES "(FreeBSD|DragonFly)")
-       set_property(TARGET ${name} APPEND_STRING PROPERTY
-                    LINK_FLAGS " -Wl,-z,origin ")
-diff --git a/cmake/modules/AddOCaml.cmake b/cmake/modules/AddOCaml.cmake
-index 02bab6846376..eff26adb2efc 100644
--- a/cmake/modules/AddOCaml.cmake
-+++ b/cmake/modules/AddOCaml.cmake
-@@ -140,9 +140,9 @@ function(add_ocaml_library name)
-   endforeach()
- 
-   if( APPLE )
-    set(ocaml_rpath "@executable_path/../../../lib${LLVM_LIBDIR_SUFFIX}")
-+    set(ocaml_rpath "@executable_path/../../../${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}")
-   elseif( UNIX )
-    set(ocaml_rpath "\\$ORIGIN/../../../lib${LLVM_LIBDIR_SUFFIX}")
-+    set(ocaml_rpath "\\$ORIGIN/../../../${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}")
-   endif()
-   list(APPEND ocaml_flags "-ldopt" "-Wl,-rpath,${ocaml_rpath}")
- 
-diff --git a/cmake/modules/AddSphinxTarget.cmake b/cmake/modules/AddSphinxTarget.cmake
-index 22e3dcb776aa..ba77b9c195e2 100644
--- a/cmake/modules/AddSphinxTarget.cmake
-+++ b/cmake/modules/AddSphinxTarget.cmake
-@@ -73,7 +73,7 @@ function (add_sphinx_target builder project)
- 
-       elseif (builder STREQUAL html)
-         string(TOUPPER "${project}" project_upper)
-        set(${project_upper}_INSTALL_SPHINX_HTML_DIR "share/doc/${project}/html"
-+        set(${project_upper}_INSTALL_SPHINX_HTML_DIR "${CMAKE_INSTALL_DOCDIR}/${project}/html"
-             CACHE STRING "HTML documentation install directory for ${project}")
- 
-         # '/.' indicates: copy the contents of the directory directly into
-diff --git a/cmake/modules/CMakeLists.txt b/cmake/modules/CMakeLists.txt
-index 9cf22b436fa7..486e40010cd8 100644
--- a/cmake/modules/CMakeLists.txt
-+++ b/cmake/modules/CMakeLists.txt
-@@ -1,4 +1,4 @@
-set(LLVM_INSTALL_PACKAGE_DIR lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm)
-+set(LLVM_INSTALL_PACKAGE_DIR ${LLVM_INSTALL_CMAKE_DIR} CACHE STRING "Path for CMake subdirectory (defaults to 'cmake/llvm')")
- set(llvm_cmake_builddir "${LLVM_BINARY_DIR}/${LLVM_INSTALL_PACKAGE_DIR}")
- 
- # First for users who use an installed LLVM, create the LLVMExports.cmake file.
-@@ -96,13 +96,13 @@ foreach(p ${_count})
-   set(LLVM_CONFIG_CODE "${LLVM_CONFIG_CODE}
- get_filename_component(LLVM_INSTALL_PREFIX \"\${LLVM_INSTALL_PREFIX}\" PATH)")
- endforeach(p)
-set(LLVM_CONFIG_INCLUDE_DIRS "\${LLVM_INSTALL_PREFIX}/include")
-+set(LLVM_CONFIG_INCLUDE_DIRS "\${LLVM_INSTALL_PREFIX}/${CMAKE_INSTALL_INCLUDEDIR}")
- set(LLVM_CONFIG_INCLUDE_DIR "${LLVM_CONFIG_INCLUDE_DIRS}")
- set(LLVM_CONFIG_MAIN_INCLUDE_DIR "${LLVM_CONFIG_INCLUDE_DIRS}")
-set(LLVM_CONFIG_LIBRARY_DIRS "\${LLVM_INSTALL_PREFIX}/lib\${LLVM_LIBDIR_SUFFIX}")
-+set(LLVM_CONFIG_LIBRARY_DIRS "\${LLVM_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}\${LLVM_LIBDIR_SUFFIX}")
- set(LLVM_CONFIG_CMAKE_DIR "\${LLVM_INSTALL_PREFIX}/${LLVM_INSTALL_PACKAGE_DIR}")
- set(LLVM_CONFIG_BINARY_DIR "\${LLVM_INSTALL_PREFIX}")
-set(LLVM_CONFIG_TOOLS_BINARY_DIR "\${LLVM_INSTALL_PREFIX}/bin")
-+set(LLVM_CONFIG_TOOLS_BINARY_DIR "\${LLVM_INSTALL_PREFIX}/${CMAKE_INSTALL_BINDIR}")
- set(LLVM_CONFIG_EXPORTS_FILE "\${LLVM_CMAKE_DIR}/LLVMExports.cmake")
- set(LLVM_CONFIG_EXPORTS "${LLVM_EXPORTS}")
- configure_file(
-diff --git a/cmake/modules/LLVMInstallSymlink.cmake b/cmake/modules/LLVMInstallSymlink.cmake
-index 09fed8085c23..aa79f192abf0 100644
--- a/cmake/modules/LLVMInstallSymlink.cmake
-+++ b/cmake/modules/LLVMInstallSymlink.cmake
-@@ -10,7 +10,7 @@ function(install_symlink name target outdir)
-     set(LINK_OR_COPY copy)
-   endif()
- 
-  set(bindir "${DESTDIR}${CMAKE_INSTALL_PREFIX}/${outdir}/")
-+  set(bindir "${DESTDIR}${outdir}/")
- 
-   message(STATUS "Creating ${name}")
- 
-diff --git a/docs/CMake.rst b/docs/CMake.rst
-index 91fb5282206f..d2c9fd94d131 100644
--- a/docs/CMake.rst
-+++ b/docs/CMake.rst
-@@ -196,7 +196,7 @@ CMake manual, or execute ``cmake --help-variable VARIABLE_NAME``.
- **LLVM_LIBDIR_SUFFIX**:STRING
-   Extra suffix to append to the directory where libraries are to be
-   installed. On a 64-bit architecture, one could use ``-DLLVM_LIBDIR_SUFFIX=64``
-  to install libraries to ``/usr/lib64``.
-+  to install libraries to ``/usr/lib64``. See also ``CMAKE_INSTALL_LIBDIR``.
- 
- **CMAKE_C_FLAGS**:STRING
-   Extra flags to use when compiling C source files.
-@@ -492,8 +492,8 @@ LLVM-specific variables
- 
- **LLVM_INSTALL_DOXYGEN_HTML_DIR**:STRING
-   The path to install Doxygen-generated HTML documentation to. This path can
-  either be absolute or relative to the CMAKE_INSTALL_PREFIX. Defaults to
-  `share/doc/llvm/doxygen-html`.
-+  either be absolute or relative to the ``CMAKE_INSTALL_PREFIX``. Defaults to
-+  `${CMAKE_INSTALL_DOCDIR}/${project}/doxygen-html`.
- 
- **LLVM_ENABLE_SPHINX**:BOOL
-   If specified, CMake will search for the ``sphinx-build`` executable and will make
-@@ -524,13 +524,33 @@ LLVM-specific variables
- 
- **LLVM_INSTALL_SPHINX_HTML_DIR**:STRING
-   The path to install Sphinx-generated HTML documentation to. This path can
-  either be absolute or relative to the CMAKE_INSTALL_PREFIX. Defaults to
-  `share/doc/llvm/html`.
-+  either be absolute or relative to the ``CMAKE_INSTALL_PREFIX``. Defaults to
-+  `${CMAKE_INSTALL_DOCDIR}/${project}/html`.
- 
- **LLVM_INSTALL_OCAMLDOC_HTML_DIR**:STRING
-   The path to install OCamldoc-generated HTML documentation to. This path can
-  either be absolute or relative to the CMAKE_INSTALL_PREFIX. Defaults to
-  `share/doc/llvm/ocaml-html`.
-+  either be absolute or relative to the ``CMAKE_INSTALL_PREFIX``. Defaults to
-+  `${CMAKE_INSTALL_DOCDIR}/${project}/ocaml-html`.
-+
-+**CMAKE_INSTALL_BINDIR**:STRING
-+  The path to install binary tools, relative to the ``CMAKE_INSTALL_PREFIX``.
-+  Defaults to `bin`.
-+
-+**CMAKE_INSTALL_LIBDIR**:STRING
-+  The path to install libraries, relative to the ``CMAKE_INSTALL_PREFIX``.
-+  Defaults to `lib`.
-+
-+**CMAKE_INSTALL_INCLUDEDIR**:STRING
-+  The path to install header files, relative to the ``CMAKE_INSTALL_PREFIX``.
-+  Defaults to `include`.
-+
-+**CMAKE_INSTALL_DOCDIR**:STRING
-+  The path to install documentation, relative to the ``CMAKE_INSTALL_PREFIX``.
-+  Defaults to `share/doc`.
-+
-+**CMAKE_INSTALL_MANDIR**:STRING
-+  The path to install manpage files, relative to the ``CMAKE_INSTALL_PREFIX``.
-+  Defaults to `share/man`.
- 
- **LLVM_CREATE_XCODE_TOOLCHAIN**:BOOL
-   macOS Only: If enabled CMake will generate a target named
-@@ -710,9 +730,11 @@ the ``cmake`` command or by setting it directly in ``ccmake`` or ``cmake-gui``).
- 
- This file is available in two different locations.
- 
-* ``<INSTALL_PREFIX>/lib/cmake/llvm/LLVMConfig.cmake`` where
-  ``<INSTALL_PREFIX>`` is the install prefix of an installed version of LLVM.
-  On Linux typically this is ``/usr/lib/cmake/llvm/LLVMConfig.cmake``.
-+* ``<LLVM_INSTALL_PACKAGE_DIR>LLVMConfig.cmake`` where
-+  ``<LLVM_INSTALL_PACKAGE_DIR>`` is the location where LLVM CMake modules are
-+  installed as part of an installed version of LLVM. This is typically
-+  ``cmake/llvm/`` within the lib directory. On Linux, this is typically
-+  ``/usr/lib/cmake/llvm/LLVMConfig.cmake``.
- 
- * ``<LLVM_BUILD_ROOT>/lib/cmake/llvm/LLVMConfig.cmake`` where
-   ``<LLVM_BUILD_ROOT>`` is the root of the LLVM build tree. **Note: this is only
-diff --git a/include/llvm/CMakeLists.txt b/include/llvm/CMakeLists.txt
-index 1d5ca3ba92b0..026f5453c1da 100644
--- a/include/llvm/CMakeLists.txt
-+++ b/include/llvm/CMakeLists.txt
-@@ -4,5 +4,5 @@ add_subdirectory(Support)
- # If we're doing an out-of-tree build, copy a module map for generated
- # header files into the build area.
- if (NOT "${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_BINARY_DIR}")
-  configure_file(module.modulemap.build module.modulemap COPYONLY)
-+  configure_file(module.modulemap.build ${LLVM_INCLUDE_DIR}/module.modulemap COPYONLY)
- endif (NOT "${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_BINARY_DIR}")
-diff --git a/tools/llvm-config/BuildVariables.inc.in b/tools/llvm-config/BuildVariables.inc.in
-index 3a24d3e974e1..987d82c1bb97 100644
--- a/tools/llvm-config/BuildVariables.inc.in
-+++ b/tools/llvm-config/BuildVariables.inc.in
-@@ -23,6 +23,10 @@
- #define LLVM_CXXFLAGS "@LLVM_CXXFLAGS@"
- #define LLVM_BUILDMODE "@LLVM_BUILDMODE@"
- #define LLVM_LIBDIR_SUFFIX "@LLVM_LIBDIR_SUFFIX@"
-+#define LLVM_INSTALL_BINDIR "@CMAKE_INSTALL_BINDIR@"
-+#define LLVM_INSTALL_LIBDIR "@CMAKE_INSTALL_LIBDIR@"
-+#define LLVM_INSTALL_INCLUDEDIR "@CMAKE_INSTALL_INCLUDEDIR@"
-+#define LLVM_INSTALL_CMAKEDIR "@LLVM_INSTALL_CMAKE_DIR@"
- #define LLVM_TARGETS_BUILT "@LLVM_TARGETS_BUILT@"
- #define LLVM_SYSTEM_LIBS "@LLVM_SYSTEM_LIBS@"
- #define LLVM_BUILD_SYSTEM "@LLVM_BUILD_SYSTEM@"
-diff --git a/tools/llvm-config/llvm-config.cpp b/tools/llvm-config/llvm-config.cpp
-index 7ef7c46a2627..1f71f8b0f820 100644
--- a/tools/llvm-config/llvm-config.cpp
-+++ b/tools/llvm-config/llvm-config.cpp
-@@ -332,12 +332,26 @@ int main(int argc, char **argv) {
-         ("-I" + ActiveIncludeDir + " " + "-I" + ActiveObjRoot + "/include");
-   } else {
-     ActivePrefix = CurrentExecPrefix;
-    ActiveIncludeDir = ActivePrefix + "/include";
-    SmallString<256> path(StringRef(LLVM_TOOLS_INSTALL_DIR));
-    sys::fs::make_absolute(ActivePrefix, path);
-    ActiveBinDir = path.str();
-    ActiveLibDir = ActivePrefix + "/lib" + LLVM_LIBDIR_SUFFIX;
-    ActiveCMakeDir = ActiveLibDir + "/cmake/llvm";
-+    {
-+      SmallString<256> path(StringRef(LLVM_INSTALL_INCLUDEDIR));
-+      sys::fs::make_absolute(ActivePrefix, path);
-+      ActiveIncludeDir = std::string(path.str());
-+    }
-+    {
-+      SmallString<256> path(StringRef(LLVM_INSTALL_BINDIR));
-+      sys::fs::make_absolute(ActivePrefix, path);
-+      ActiveBinDir = std::string(path.str());
-+    }
-+    {
-+      SmallString<256> path(StringRef(LLVM_INSTALL_LIBDIR LLVM_LIBDIR_SUFFIX));
-+      sys::fs::make_absolute(ActivePrefix, path);
-+      ActiveLibDir = std::string(path.str());
-+    }
-+    {
-+      SmallString<256> path(StringRef(LLVM_INSTALL_CMAKEDIR));
-+      sys::fs::make_absolute(ActivePrefix, path);
-+      ActiveCMakeDir = std::string(path.str());
-+    }
-     ActiveIncludeOption = "-I" + ActiveIncludeDir;
-   }
- 
-diff --git a/tools/lto/CMakeLists.txt b/tools/lto/CMakeLists.txt
-index b86e4abd01a7..02ce5773f17d 100644
--- a/tools/lto/CMakeLists.txt
-+++ b/tools/lto/CMakeLists.txt
-@@ -23,7 +23,7 @@ set(LLVM_EXPORTED_SYMBOL_FILE ${CMAKE_CURRENT_SOURCE_DIR}/lto.exports)
- add_llvm_library(LTO SHARED INSTALL_WITH_TOOLCHAIN ${SOURCES} DEPENDS intrinsics_gen)
- 
- install(FILES ${LLVM_MAIN_INCLUDE_DIR}/llvm-c/lto.h
-  DESTINATION include/llvm-c
-+  DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/llvm-c
-   COMPONENT LTO)
- 
- if (APPLE)
-diff --git a/tools/opt-viewer/CMakeLists.txt b/tools/opt-viewer/CMakeLists.txt
-index 19b606933082..27b9f71b3d79 100644
--- a/tools/opt-viewer/CMakeLists.txt
-+++ b/tools/opt-viewer/CMakeLists.txt
-@@ -8,6 +8,6 @@ set (files
- 
- foreach (file ${files})
-   install(PROGRAMS ${file}
-    DESTINATION share/opt-viewer
-+    DESTINATION ${CMAKE_INSTALL_DATADIR}/opt-viewer
-     COMPONENT opt-viewer)
- endforeach (file)
-diff --git a/tools/remarks-shlib/CMakeLists.txt b/tools/remarks-shlib/CMakeLists.txt
-index e948496c603a..1f4df8a98b10 100644
--- a/tools/remarks-shlib/CMakeLists.txt
-+++ b/tools/remarks-shlib/CMakeLists.txt
-@@ -11,7 +11,7 @@ set(LLVM_EXPORTED_SYMBOL_FILE ${CMAKE_CURRENT_SOURCE_DIR}/Remarks.exports)
- add_llvm_library(Remarks SHARED INSTALL_WITH_TOOLCHAIN ${SOURCES})
- 
- install(FILES ${LLVM_MAIN_INCLUDE_DIR}/llvm-c/Remarks.h
-  DESTINATION include/llvm-c
-+  DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/llvm-c
-   COMPONENT Remarks)
- 
- if (APPLE)
--- a/pkgs/development/compilers/llvm/9/openmp/default.nix
+++ b/pkgs/development/compilers/llvm/9/openmp/default.nix
@ -1,37 +0,0 @@
-{ lib
-, stdenv
-, llvm_meta
-, fetch
-, cmake
-, llvm
-, targetLlvm
-, perl
-, version
-}:
-
-stdenv.mkDerivation rec {
-  pname = "openmp";
-  inherit version;
-
-  src = fetch pname "1knafnpp0f7hylx8q20lkd6g1sf0flly572dayc5d5kghh7hd52w";
-
-  nativeBuildInputs = [ cmake perl ];
-  buildInputs = [
-    (if stdenv.buildPlatform == stdenv.hostPlatform then llvm else targetLlvm)
-  ];
-
-  meta = llvm_meta // {
-    homepage = "https://openmp.llvm.org/";
-    description = "Support for the OpenMP language";
-    longDescription = ''
-      The OpenMP subproject of LLVM contains the components required to build an
-      executable OpenMP program that are outside the compiler itself.
-      Contains the code for the runtime library against which code compiled by
-      "clang -fopenmp" must be linked before it can run and the library that
-      supports offload to target devices.
-    '';
-    # "All of the code is dual licensed under the MIT license and the UIUC
-    # License (a BSD-like license)":
-    license = with lib.licenses; [ mit ncsa ];
-  };
-}
--- a/pkgs/test/default.nix
+++ b/pkgs/test/default.nix
@ -16,6 +16,7 @@ with pkgs;
        (filter (n: n != "llvmPackages_6"))
        (filter (n: n != "llvmPackages_7"))
        (filter (n: n != "llvmPackages_8"))
+        (filter (n: n != "llvmPackages_9"))
        (filter (n: n != "llvmPackages_10"))
        (filter (n: n != "llvmPackages_11"))
      ];
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@ -199,7 +199,7 @@ mapAliases ({
  clang6Stdenv = throw "clang6Stdenv has been removed from nixpkgs"; # Added 2024-01-08
  clang7Stdenv = throw "clang7Stdenv has been removed from nixpkgs"; # Added 2023-11-19
  clang8Stdenv = throw "clang8Stdenv has been removed from nixpkgs"; # Added 2024-01-24
-  clang9Stdenv = lowPrio llvmPackages_9.stdenv;
+  clang9Stdenv = throw "clang9Stdenv has been remvoed from nixpkgs"; # Added 2024-04-08
  clang10Stdenv = throw "clang10Stdenv has been removed from nixpkgs"; # Added 2024-01-26
  clang11Stdenv = throw "clang11Stdenv has been removed from nixpkgs"; # Added 2023-01-24
  clang12Stdenv = lowPrio llvmPackages_12.stdenv;
@ -212,11 +212,13 @@ mapAliases ({
  clang-tools_6 = throw "clang-tools_6 has been removed from nixpkgs"; # Added 2024-01-08
  clang-tools_7 = throw "clang-tools_7 has been removed from nixpkgs"; # Added 2023-11-19
  clang-tools_8  = throw "clang-tools_8 has been removed from nixpkgs"; # Added 2024-01-24
+  clang-tools_9 = throw "clang-tools_9 has been removed from nixpkgs"; # Added 2024-04-08
  clang-tools_10 = throw "clang-tools_10 has been removed from nixpkgs"; # Added 2023-01-26
  clang-tools_11 = throw "clang-tools_11 has been removed from nixpkgs"; # Added 2023-01-24
  clang_6 = throw "clang_6 has been removed from nixpkgs"; # Added 2024-01-08
  clang_7 = throw "clang_7 has been removed from nixpkgs"; # Added 2023-11-19
  clang_8  = throw "clang_8 has been removed from nixpkgs"; # Added 2024-01-24
+  clang_9 = throw "clang_9 has been removed from nixpkgs"; # Added 2024-01-08
  clang_10 = throw "clang_10 has been removed from nixpkgs"; # Added 2024-01-26
  clang_11 = throw "clang_11 has been removed from nixpkgs"; # Added 2023-01-24

@ -729,21 +731,25 @@ mapAliases ({
  lld_6 = throw "lld_6 has been removed from nixpkgs"; # Added 2024-01-08
  lld_7 = throw "lld_7 has been removed from nixpkgs"; # Added 2023-11-19
  lld_8 = throw "lld_8 has been removed from nixpkgs"; # Added 2024-01-24
+  lld_9 = throw "lld_9 has been removed from nixpkgs"; # Added 2024-04-08
  lld_10 = throw "lld_10 has been removed from nixpkgs"; # Added 2024-01-26
  lld_11 = throw "lld_11 has been removed from nixpkgs"; # Added 2024-01-24
  lldb_6 = throw "lldb_6 has been removed from nixpkgs"; # Added 2024-01-08
  lldb_7 = throw "lldb_7 has been removed from nixpkgs"; # Added 2023-11-19
  lldb_8 = throw "lldb_8 has been removed from nixpkgs"; # Added 2024-01-24
+  lldb_9 = throw "lldb_9 has been removed from nixpkgs"; # Added 2024-04-08
  lldb_10 = throw "lldb_10 has been removed from nixpkgs"; # Added 2024-01-26
  lldb_11 = throw "lldb_11 has been removed from nixpkgs"; # Added 2024-01-24
  llvmPackages_6 = throw "llvmPackages_6 has been removed from nixpkgs"; # Added 2024-01-09
  llvmPackages_7 = throw "llvmPackages_7 has been removed from nixpkgs"; # Added 2023-11-19
  llvmPackages_8 = throw "llvmPackages_8 has been removed from nixpkgs"; # Added 2024-01-24
+  llvmPackages_9 = throw "llvmPackages_9 has been removed from nixpkgs"; # Added 2024-04-08
  llvmPackages_10 = throw "llvmPackages_10 has been removed from nixpkgs"; # Added 2024-01-26
  llvmPackages_11 = throw "llvmPackages_11 has been removed from nixpkgs"; # Added 2024-01-24
  llvm_6 = throw "llvm_6 has been removed from nixpkgs"; # Added 2024-01-08
  llvm_7 = throw "llvm_7 has been removed from nixpkgs"; # Added 2023-11-19
  llvm_8 = throw "llvm_8 has been removed from nixpkgs"; # Added 2024-01-24
+  llvm_9 = throw "llvm_9 has been removed from nixpkgs"; # Added 2024-04-08
  llvm_10 = throw "llvm_10 has been removed from nixpkgs"; # Added 2024-01-26
  llvm_11 = throw "llvm_11 has been removed from nixpkgs"; # Added 2024-01-24

--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@ -15444,7 +15444,6 @@ with pkgs;
  };

  clang = llvmPackages.clang;
-  clang_9  = llvmPackages_9.clang;
  clang_12 = llvmPackages_12.clang;
  clang_13 = llvmPackages_13.clang;
  clang_14 = llvmPackages_14.clang;
@ -15454,10 +15453,6 @@ with pkgs;

  clang-tools = callPackage ../development/tools/clang-tools { };

-  clang-tools_9 = callPackage ../development/tools/clang-tools {
-    llvmPackages = llvmPackages_9;
-  };
-
  clang-tools_12 = callPackage ../development/tools/clang-tools {
    llvmPackages = llvmPackages_12;
  };
@ -16401,7 +16396,6 @@ with pkgs;
  };

  lld = llvmPackages.lld;
-  lld_9 = llvmPackages_9.lld;
  lld_12 = llvmPackages_12.lld;
  lld_13 = llvmPackages_13.lld;
  lld_14 = llvmPackages_14.lld;
@ -16410,7 +16404,6 @@ with pkgs;
  lld_17 = llvmPackages_17.lld;

  lldb = llvmPackages.lldb;
-  lldb_9 = llvmPackages_9.lldb;
  lldb_12 = llvmPackages_12.lldb;
  lldb_13 = llvmPackages_13.lldb;
  lldb_14 = llvmPackages_14.lldb;
@ -16419,7 +16412,6 @@ with pkgs;
  lldb_17 = llvmPackages_17.lldb;

  llvm = llvmPackages.llvm;
-  llvm_9  = llvmPackages_9.llvm;
  llvm_12 = llvmPackages_12.llvm;
  llvm_13 = llvmPackages_13.llvm;
  llvm_14 = llvmPackages_14.llvm;
@ -16451,14 +16443,6 @@ with pkgs;
      stdenv.targetPlatform));
  in pkgs.${"llvmPackages_${minSupported}"};

-  llvmPackages_9 = recurseIntoAttrs (callPackage ../development/compilers/llvm/9 {
-    inherit (stdenvAdapters) overrideCC;
-    buildLlvmTools = buildPackages.llvmPackages_9.tools;
-    targetLlvm = targetPackages.llvmPackages_9.llvm or llvmPackages_9.llvm;
-    targetLlvmLibraries = targetPackages.llvmPackages_9.libraries or llvmPackages_9.libraries;
-    stdenv = if stdenv.cc.cc.isGNU or false then gcc12Stdenv else stdenv; # does not build with gcc13
-  });
-
  llvmPackages_12 = recurseIntoAttrs (callPackage ../development/compilers/llvm/12 ({
    inherit (stdenvAdapters) overrideCC;
    buildLlvmTools = buildPackages.llvmPackages_12.tools;
@ -19271,10 +19255,7 @@ with pkgs;

  lttv = callPackage ../development/tools/misc/lttv { };

-  luaformatter = callPackage ../development/tools/luaformatter
-    (lib.optionalAttrs (stdenv.cc.isClang && lib.versionOlder stdenv.cc.version "9") {
-      stdenv = overrideCC stdenv llvmPackages_9.clang;
-    });
+  luaformatter = callPackage ../development/tools/luaformatter { };

  lurk = callPackage ../development/tools/lurk { };