From fd6f76bf9bb29bfbd8c1fa9e5d078dc9600afd38 Mon Sep 17 00:00:00 2001
From: Elliot Cameron <eacameron@gmail.com>
Date: Wed, 30 Dec 2020 16:11:39 -0500
Subject: [PATCH] go_2-dev: init at dev.go2go branch

Head of dev.go2go branch was abe4d3dce12252ed09216eaa67b7dab8c8922537
at time of writing.
---
 pkgs/development/compilers/go/2-dev.nix       | 262 ++++++++++++++++++
 .../compilers/go/ssl-cert-file-2-dev.patch    |  45 +++
 pkgs/top-level/all-packages.nix               |   7 +
 3 files changed, 314 insertions(+)
 create mode 100644 pkgs/development/compilers/go/2-dev.nix
 create mode 100644 pkgs/development/compilers/go/ssl-cert-file-2-dev.patch

diff --git a/pkgs/development/compilers/go/2-dev.nix b/pkgs/development/compilers/go/2-dev.nix
new file mode 100644
index 000000000000..44ee67ca8f6a
--- /dev/null
+++ b/pkgs/development/compilers/go/2-dev.nix
@@ -0,0 +1,262 @@
+{ pkgs, stdenv, fetchurl, fetchgit, tzdata, iana-etc, runCommand
+, perl, which, pkgconfig, patch, procps, pcre, cacert, Security, Foundation
+, mailcap, runtimeShell
+, buildPackages
+, pkgsBuildTarget
+, fetchpatch
+}:
+
+let
+
+  inherit (stdenv.lib) optionals optionalString;
+
+  goBootstrap = runCommand "go-bootstrap" {} ''
+    mkdir $out
+    cp -rf ${buildPackages.go_bootstrap}/* $out/
+    chmod -R u+w $out
+    find $out -name "*.c" -delete
+    cp -rf $out/bin/* $out/share/go/bin/
+  '';
+
+  goarch = platform: {
+    "i686" = "386";
+    "x86_64" = "amd64";
+    "aarch64" = "arm64";
+    "arm" = "arm";
+    "armv5tel" = "arm";
+    "armv6l" = "arm";
+    "armv7l" = "arm";
+    "powerpc64le" = "ppc64le";
+  }.${platform.parsed.cpu.name} or (throw "Unsupported system");
+
+  # We need a target compiler which is still runnable at build time,
+  # to handle the cross-building case where build != host == target
+  targetCC = pkgsBuildTarget.targetPackages.stdenv.cc;
+in
+
+stdenv.mkDerivation rec {
+  pname = "go";
+  version = "2";
+
+  src = fetchgit {
+    url = https://go.googlesource.com/go;
+    rev = "abe4d3dce12252ed09216eaa67b7dab8c8922537";
+    sha256 = "sha256:1d46w8426148q81fvrifx9glgn402jvf29n44i8j8g1pvzkfckh6";
+  };
+
+  # perl is used for testing go vet
+  nativeBuildInputs = [ perl which pkgconfig patch procps ];
+  buildInputs = [ cacert pcre ]
+    ++ optionals stdenv.isLinux [ stdenv.cc.libc.out ]
+    ++ optionals (stdenv.hostPlatform.libc == "glibc") [ stdenv.cc.libc.static ];
+
+  depsTargetTargetPropagated = optionals stdenv.isDarwin [ Security Foundation ];
+
+  hardeningDisable = [ "all" ];
+
+  prePatch = ''
+    echo '${version}' > VERSION
+    patchShebangs ./ # replace /bin/bash
+
+    # This source produces shell script at run time,
+    # and thus it is not corrected by patchShebangs.
+    substituteInPlace misc/cgo/testcarchive/carchive_test.go \
+      --replace '#!/usr/bin/env bash' '#!${runtimeShell}'
+
+    # Patch the mimetype database location which is missing on NixOS.
+    # but also allow static binaries built with NixOS to run outside nix
+    sed -i 's,\"/etc/mime.types,"${mailcap}/etc/mime.types\"\,\n\t&,' src/mime/type_unix.go
+
+    # Disabling the 'os/http/net' tests (they want files not available in
+    # chroot builds)
+    rm src/net/{listen,parse}_test.go
+    rm src/syscall/exec_linux_test.go
+
+    # !!! substituteInPlace does not seems to be effective.
+    # The os test wants to read files in an existing path. Just don't let it be /usr/bin.
+    sed -i 's,/usr/bin,'"`pwd`", src/os/os_test.go
+    sed -i 's,/bin/pwd,'"`type -P pwd`", src/os/os_test.go
+    # Fails on aarch64
+    sed -i '/TestFallocate/aif true \{ return\; \}' src/cmd/link/internal/ld/fallocate_test.go
+    # Skip this test since ssl patches mess it up.
+    sed -i '/TestLoadSystemCertsLoadColonSeparatedDirs/aif true \{ return\; \}' src/crypto/x509/root_unix_test.go
+    # Disable another PIE test which breaks.
+    sed -i '/TestTrivialPIE/aif true \{ return\; \}' misc/cgo/testshared/shared_test.go
+    # Disable the BuildModePie test
+    sed -i '/TestBuildmodePIE/aif true \{ return\; \}' src/cmd/go/go_test.go
+    # Disable the unix socket test
+    sed -i '/TestShutdownUnix/aif true \{ return\; \}' src/net/net_test.go
+    # Disable the hostname test
+    sed -i '/TestHostname/aif true \{ return\; \}' src/os/os_test.go
+    # ParseInLocation fails the test
+    sed -i '/TestParseInSydney/aif true \{ return\; \}' src/time/format_test.go
+    # Remove the api check as it never worked
+    sed -i '/src\/cmd\/api\/run.go/ireturn nil' src/cmd/dist/test.go
+    # Remove the coverage test as we have removed this utility
+    sed -i '/TestCoverageWithCgo/aif true \{ return\; \}' src/cmd/go/go_test.go
+    # Remove the timezone naming test
+    sed -i '/TestLoadFixed/aif true \{ return\; \}' src/time/time_test.go
+    # Remove disable setgid test
+    sed -i '/TestRespectSetgidDir/aif true \{ return\; \}' src/cmd/go/internal/work/build_test.go
+    # Remove cert tests that conflict with NixOS's cert resolution
+    sed -i '/TestEnvVars/aif true \{ return\; \}' src/crypto/x509/root_unix_test.go
+    # TestWritevError hangs sometimes
+    sed -i '/TestWritevError/aif true \{ return\; \}' src/net/writev_test.go
+    # TestVariousDeadlines fails sometimes
+    sed -i '/TestVariousDeadlines/aif true \{ return\; \}' src/net/timeout_test.go
+
+    sed -i 's,/etc/protocols,${iana-etc}/etc/protocols,' src/net/lookup_unix.go
+    sed -i 's,/etc/services,${iana-etc}/etc/services,' src/net/port_unix.go
+
+    # Disable cgo lookup tests not works, they depend on resolver
+    rm src/net/cgo_unix_test.go
+
+  '' + optionalString stdenv.isLinux ''
+    # prepend the nix path to the zoneinfo files but also leave the original value for static binaries
+    # that run outside a nix server
+    sed -i 's,\"/usr/share/zoneinfo/,"${tzdata}/share/zoneinfo/\"\,\n\t&,' src/time/zoneinfo_unix.go
+
+  '' + optionalString stdenv.isAarch32 ''
+    echo '#!${runtimeShell}' > misc/cgo/testplugin/test.bash
+  '' + optionalString stdenv.isDarwin ''
+    substituteInPlace src/race.bash --replace \
+      "sysctl machdep.cpu.extfeatures | grep -qv EM64T" true
+    sed -i 's,strings.Contains(.*sysctl.*,true {,' src/cmd/dist/util.go
+    sed -i 's,"/etc","'"$TMPDIR"'",' src/os/os_test.go
+    sed -i 's,/_go_os_test,'"$TMPDIR"'/_go_os_test,' src/os/path_test.go
+
+    sed -i '/TestChdirAndGetwd/aif true \{ return\; \}' src/os/os_test.go
+    sed -i '/TestCredentialNoSetGroups/aif true \{ return\; \}' src/os/exec/exec_posix_test.go
+    sed -i '/TestRead0/aif true \{ return\; \}' src/os/os_test.go
+    sed -i '/TestSystemRoots/aif true \{ return\; \}' src/crypto/x509/root_darwin_test.go
+
+    sed -i '/TestGoInstallRebuildsStalePackagesInOtherGOPATH/aif true \{ return\; \}' src/cmd/go/go_test.go
+    sed -i '/TestBuildDashIInstallsDependencies/aif true \{ return\; \}' src/cmd/go/go_test.go
+
+    sed -i '/TestDisasmExtld/aif true \{ return\; \}' src/cmd/objdump/objdump_test.go
+
+    sed -i 's/unrecognized/unknown/' src/cmd/link/internal/ld/lib.go
+
+    # TestCurrent fails because Current is not implemented on Darwin
+    sed -i 's/TestCurrent/testCurrent/g' src/os/user/user_test.go
+    sed -i 's/TestLookup/testLookup/g' src/os/user/user_test.go
+
+    touch $TMPDIR/group $TMPDIR/hosts $TMPDIR/passwd
+  '';
+
+  patches = [
+    ./remove-tools-1.11.patch
+    ./ssl-cert-file-2-dev.patch
+    ./remove-test-pie-1.15.patch
+    ./creds-test.patch
+    ./go-1.9-skip-flaky-19608.patch
+    ./go-1.9-skip-flaky-20072.patch
+    ./skip-external-network-tests-1.15.patch
+    ./skip-nohup-tests.patch
+    ./skip-cgo-tests-1.15.patch
+  ] ++ [
+    # breaks under load: https://github.com/golang/go/issues/25628
+    (if stdenv.isAarch32
+    then ./skip-test-extra-files-on-aarch32-1.14.patch
+    else ./skip-test-extra-files-on-386-1.14.patch)
+  ];
+
+  postPatch = ''
+    find . -name '*.orig' -exec rm {} ';'
+  '';
+
+  GOOS = stdenv.targetPlatform.parsed.kernel.name;
+  GOARCH = goarch stdenv.targetPlatform;
+  # GOHOSTOS/GOHOSTARCH must match the building system, not the host system.
+  # Go will nevertheless build a for host system that we will copy over in
+  # the install phase.
+  GOHOSTOS = stdenv.buildPlatform.parsed.kernel.name;
+  GOHOSTARCH = goarch stdenv.buildPlatform;
+
+  # {CC,CXX}_FOR_TARGET must be only set for cross compilation case as go expect those
+  # to be different from CC/CXX
+  CC_FOR_TARGET = if (stdenv.buildPlatform != stdenv.targetPlatform) then
+      "${targetCC}/bin/${targetCC.targetPrefix}cc"
+    else
+      null;
+  CXX_FOR_TARGET = if (stdenv.buildPlatform != stdenv.targetPlatform) then
+      "${targetCC}/bin/${targetCC.targetPrefix}c++"
+    else
+      null;
+
+  GOARM = toString (stdenv.lib.intersectLists [(stdenv.hostPlatform.parsed.cpu.version or "")] ["5" "6" "7"]);
+  GO386 = 387; # from Arch: don't assume sse2 on i686
+  CGO_ENABLED = 1;
+  # Hopefully avoids test timeouts on Hydra
+  GO_TEST_TIMEOUT_SCALE = 3;
+
+  # Indicate that we are running on build infrastructure
+  # Some tests assume things like home directories and users exists
+  GO_BUILDER_NAME = "nix";
+
+  GOROOT_BOOTSTRAP="${goBootstrap}/share/go";
+
+  postConfigure = ''
+    export GOCACHE=$TMPDIR/go-cache
+    # this is compiled into the binary
+    export GOROOT_FINAL=$out/share/go
+
+    export PATH=$(pwd)/bin:$PATH
+
+    ${optionalString (stdenv.buildPlatform != stdenv.targetPlatform) ''
+    # Independent from host/target, CC should produce code for the building system.
+    # We only set it when cross-compiling.
+    export CC=${buildPackages.stdenv.cc}/bin/cc
+    ''}
+    ulimit -a
+  '';
+
+  postBuild = ''
+    (cd src && ./make.bash)
+  '';
+
+  doCheck = stdenv.hostPlatform == stdenv.targetPlatform && !stdenv.isDarwin;
+
+  checkPhase = ''
+    runHook preCheck
+    (cd src && HOME=$TMPDIR GOCACHE=$TMPDIR/go-cache ./run.bash --no-rebuild)
+    runHook postCheck
+  '';
+
+  preInstall = ''
+    rm -r pkg/obj
+    # Contains the wrong perl shebang when cross compiling,
+    # since it is not used for anything we can deleted as well.
+    rm src/regexp/syntax/make_perl_groups.pl
+  '' + (if (stdenv.buildPlatform != stdenv.hostPlatform) then ''
+    mv bin/*_*/* bin
+    rmdir bin/*_*
+    ${optionalString (!(GOHOSTARCH == GOARCH && GOOS == GOHOSTOS)) ''
+      rm -rf pkg/${GOHOSTOS}_${GOHOSTARCH} pkg/tool/${GOHOSTOS}_${GOHOSTARCH}
+    ''}
+  '' else if (stdenv.hostPlatform != stdenv.targetPlatform) then ''
+    rm -rf bin/*_*
+    ${optionalString (!(GOHOSTARCH == GOARCH && GOOS == GOHOSTOS)) ''
+      rm -rf pkg/${GOOS}_${GOARCH} pkg/tool/${GOOS}_${GOARCH}
+    ''}
+  '' else "");
+
+  installPhase = ''
+    runHook preInstall
+    mkdir -p $GOROOT_FINAL
+    cp -a bin pkg src lib misc api doc $GOROOT_FINAL
+    ln -s $GOROOT_FINAL/bin $out/bin
+    runHook postInstall
+  '';
+
+  disallowedReferences = [ goBootstrap ];
+
+  meta = with stdenv.lib; {
+    branch = "dev.go2go";
+    homepage = "http://golang.org/";
+    description = "The Go Programming language";
+    license = licenses.bsd3;
+    maintainers = teams.golang.members ++ [ maintainers._3noch ];
+    platforms = platforms.linux ++ platforms.darwin;
+  };
+}
diff --git a/pkgs/development/compilers/go/ssl-cert-file-2-dev.patch b/pkgs/development/compilers/go/ssl-cert-file-2-dev.patch
new file mode 100644
index 000000000000..6146880f7a03
--- /dev/null
+++ b/pkgs/development/compilers/go/ssl-cert-file-2-dev.patch
@@ -0,0 +1,45 @@
+diff --git a/src/crypto/x509/root_darwin_amd64.go b/src/crypto/x509/root_darwin_amd64.go
+index ce88de025e..258ecc45d1 100644
+--- a/src/crypto/x509/root_darwin_amd64.go
++++ b/src/crypto/x509/root_darwin_amd64.go
+@@ -10,6 +10,7 @@ import (
+ 	"bytes"
+ 	macOS "crypto/x509/internal/macos"
+ 	"fmt"
++	"io/ioutil"
+ 	"os"
+ 	"strings"
+ )
+@@ -25,6 +26,14 @@ func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate
+ var loadSystemRootsWithCgo func() (*CertPool, error)
+
+ func loadSystemRoots() (*CertPool, error) {
++	if file := os.Getenv("NIX_SSL_CERT_FILE"); file != "" {
++		data, err := ioutil.ReadFile(file)
++		if err == nil {
++			roots := NewCertPool()
++			roots.AppendCertsFromPEM(data)
++			return roots, nil
++		}
++	}
+ 	var trustedRoots []*Certificate
+ 	untrustedRoots := make(map[string]bool)
+
+diff --git a/src/crypto/x509/root_unix.go b/src/crypto/x509/root_unix.go
+index b48e618a65..195c1ff25a 100644
+--- a/src/crypto/x509/root_unix.go
++++ b/src/crypto/x509/root_unix.go
+@@ -42,6 +42,13 @@ func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate
+
+ func loadSystemRoots() (*CertPool, error) {
+ 	roots := NewCertPool()
++	if file := os.Getenv("NIX_SSL_CERT_FILE"); file != "" {
++		data, err := ioutil.ReadFile(file)
++		if err == nil {
++			roots.AppendCertsFromPEM(data)
++			return roots, nil
++		}
++	}
+
+ 	files := certFiles
+ 	if f := os.Getenv(certFileEnv); f != "" {
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index d745e113e92f..4803585ee5ab 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -9579,6 +9579,13 @@ in
     buildPackages = buildPackages // { stdenv = gcc8Stdenv; };
   });
 
+  go_2-dev = callPackage ../development/compilers/go/2-dev.nix ({
+    inherit (darwin.apple_sdk.frameworks) Security Foundation;
+  } // lib.optionalAttrs stdenv.isAarch64 {
+    stdenv = gcc8Stdenv;
+    buildPackages = buildPackages // { stdenv = gcc8Stdenv; };
+  });
+
   go = go_1_15;
 
   go-repo-root = callPackage ../development/tools/go-repo-root { };