dmd: 2.067.1 -> 2.070.2

dmd 2.070.2 requires a working dmd compiler to build.

Instead of downloading a pre-compiled binary blob, keep the previous
version (which does properly build from source) around as dmd_2_067_1,
and use that to bootstrap the new version.

pkgs/development/compilers/dmd/2.067.1.nix

@@ -0,0 +1,74 @@
+{ stdenv, fetchurl, unzip, makeWrapper }:
+
+stdenv.mkDerivation {
+  name = "dmd-2.067.1";
+
+  src = fetchurl {
+    url = http://downloads.dlang.org/releases/2015/dmd.2.067.1.zip;
+    sha256 = "0ny99vfllvvgcl79pwisxcdnb3732i827k9zg8c0j4s0n79k5z94";
+  };
+
+  nativeBuildInputs = [ unzip makeWrapper ];
+
+  postPatch = stdenv.lib.optionalString stdenv.isDarwin ''
+      # Allow to use "clang++", commented in Makefile
+      substituteInPlace src/dmd/posix.mak \
+          --replace g++ clang++ \
+          --replace MACOSX_DEPLOYMENT_TARGET MACOSX_DEPLOYMENT_TARGET_
+
+      # Was not able to compile on darwin due to "__inline_isnanl"
+      # being undefined.
+      substituteInPlace src/dmd/root/port.c --replace __inline_isnanl __inline_isnan
+  '';
+
+  # Buid and install are based on http://wiki.dlang.org/Building_DMD
+  buildPhase = ''
+      cd src/dmd
+      make -f posix.mak INSTALL_DIR=$out
+      export DMD=$PWD/dmd
+      cd ../druntime
+      make -f posix.mak INSTALL_DIR=$out DMD=$DMD
+      cd ../phobos
+      make -f posix.mak INSTALL_DIR=$out DMD=$DMD
+      cd ../..
+  '';
+
+  installPhase = ''
+      cd src/dmd
+      mkdir $out
+      mkdir $out/bin
+      cp dmd $out/bin
+
+      cd ../druntime
+      mkdir $out/include
+      mkdir $out/include/d2
+      cp -r import/* $out/include/d2
+
+      cd ../phobos
+      mkdir $out/lib
+      ${let bits = if stdenv.is64bit then "64" else "32";
+            osname = if stdenv.isDarwin then "osx" else "linux"; in
+      "cp generated/${osname}/release/${bits}/libphobos2.a $out/lib"
+      }
+
+      cp -r std $out/include/d2
+      cp -r etc $out/include/d2
+
+      wrapProgram $out/bin/dmd \
+          --prefix PATH ":" "${stdenv.cc}/bin" \
+          --set CC "$""{CC:-$CC""}"
+
+      cd $out/bin
+      tee dmd.conf << EOF
+      [Environment]
+      DFLAGS=-I$out/include/d2 -L-L$out/lib ${stdenv.lib.optionalString (!stdenv.cc.isClang) "-L--no-warn-search-mismatch -L--export-dynamic"}
+      EOF
+  '';
+
+  meta = with stdenv.lib; {
+    description = "D language compiler";
+    homepage = http://dlang.org/;
+    license = licenses.free; # parts under different licenses
+    platforms = platforms.unix;
+  };
+}

pkgs/development/compilers/dmd/default.nix

@@ -1,14 +1,19 @@
-{ stdenv, fetchurl, unzip, makeWrapper }:
+{ stdenv, fetchurl
+, makeWrapper, unzip, which
 
-stdenv.mkDerivation {
-  name = "dmd-2.067.1";
+# Versions 2.070.2 and up require a working dmd compiler to build:
+, bootstrapDmd }:
+
+stdenv.mkDerivation rec {
+  name = "dmd-${version}";
+  version = "2.070.2";
 
   src = fetchurl {
-    url = http://downloads.dlang.org/releases/2015/dmd.2.067.1.zip;
-    sha256 = "0ny99vfllvvgcl79pwisxcdnb3732i827k9zg8c0j4s0n79k5z94";
+    url = "http://downloads.dlang.org/releases/2.x/${version}/dmd.${version}.zip";
+    sha256 = "1pbhxxf41v816j0aky3q2pcd8a6phy3363l7vr5r5pg8ps3gl701";
   };
 
-  nativeBuildInputs = [ unzip makeWrapper ];
+  nativeBuildInputs = [ bootstrapDmd makeWrapper unzip which ];
 
   postPatch = stdenv.lib.optionalString stdenv.isDarwin ''
       # Allow to use "clang++", commented in Makefile

pkgs/top-level/all-packages.nix

@@ -1397,7 +1397,10 @@ in
 
   disper = callPackage ../tools/misc/disper { };
 
-  dmd = callPackage ../development/compilers/dmd { };
+  dmd_2_067_1 = callPackage ../development/compilers/dmd/2.067.1.nix { };
+  dmd = callPackage ../development/compilers/dmd {
+    bootstrapDmd = dmd_2_067_1;
+  };
 
   dmg2img = callPackage ../tools/misc/dmg2img { };