linux bootstrap tools: Use same derivation whether cross compiling or not

pkgs/stdenv/linux/make-bootstrap-tools-cross.nix

···
 {system ? builtins.currentSystem}:
 
-let buildFor = toolsArch: (
-
 let
-  lib = import ../../../lib;
-  pkgsFun = import ../../..;
-
-  inherit (lib.systems.examples)
-    sheevaplug raspberryPi armv7l-hf-multiplatform
-    aarch64-multiplatform scaleway-c1 pogoplug4;
-
-  selectedCrossSystem =
-    if toolsArch == "armv5tel" then sheevaplug else
-    if toolsArch == "scaleway" then scaleway-c1 else
-    if toolsArch == "pogoplug4" then pogoplug4 else
-    if toolsArch == "armv6l" then raspberryPi else
-    if toolsArch == "armv7l" then armv7l-hf-multiplatform else
-    if toolsArch == "aarch64" then aarch64-multiplatform else null;
-
-  pkgs = pkgsFun ({ inherit system; crossSystem = selectedCrossSystem; });
-
-  glibc = pkgs.libcCross;
-  bash = pkgs.bash;
-  findutils = pkgs.findutils;
-  diffutils = pkgs.diffutils;
-  gnused = pkgs.gnused;
-  gnugrep = pkgs.gnugrep;
-  gawk = pkgs.gawk;
-  gzip = pkgs.gzip;
-  bzip2 = pkgs.bzip2;
-  gnumake = pkgs.gnumake;
-  patch = pkgs.patch;
-  patchelf = pkgs.patchelf;
-  gcc = pkgs.gcc.cc;
-  gmpxx = pkgs.gmpxx;
-  mpfr = pkgs.mpfr;
-  zlib = pkgs.zlib;
-  libmpc = pkgs.libmpc;
-  binutils = pkgs.binutils;
-  libelf = pkgs.libelf;
-
-  # Keep these versions in sync with the versions used in the current GCC!
-  isl = pkgs.isl_0_14;
-in
-
-rec {
-
-
-  coreutilsMinimal = pkgs.coreutils.override (args: {
-    # We want coreutils without ACL/attr support.
-    aclSupport = false;
-    attrSupport = false;
-    # Our tooling currently can't handle scripts in bin/, only ELFs and symlinks.
-    singleBinary = "symlinks";
-  });
-
-  tarMinimal = pkgs.gnutar.override { acl = null; };
-
-  busyboxMinimal = pkgs.busybox.override {
-    useMusl = true;
-    enableStatic = true;
-    enableMinimal = true;
-    extraConfig = ''
-      CONFIG_ASH y
-      CONFIG_ASH_BUILTIN_ECHO y
-      CONFIG_ASH_BUILTIN_TEST y
-      CONFIG_ASH_OPTIMIZE_FOR_SIZE y
-      CONFIG_MKDIR y
-      CONFIG_TAR y
-      CONFIG_UNXZ y
-    '';
+  make = crossSystem: import ./make-bootstrap-tools.nix {
+    localSystem = { inherit system; };
+    inherit crossSystem;
   };
 
-  build =
-
-    pkgs.stdenv.mkDerivation {
-      name = "stdenv-bootstrap-tools-cross";
-      crossConfig = pkgs.hostPlatform.config;
-
-      nativeBuildInputs = [
-        pkgs.buildPackages.nukeReferences
-        pkgs.buildPackages.cpio
-      ];
-
-      buildCommand = ''
-        set -x
-        mkdir -p $out/bin $out/lib $out/libexec
-
-        # Copy what we need of Glibc.
-        cp -d ${glibc.out}/lib/ld-*.so* $out/lib
-        cp -d ${glibc.out}/lib/libc*.so* $out/lib
-        cp -d ${glibc.out}/lib/libc_nonshared.a $out/lib
-        cp -d ${glibc.out}/lib/libm*.so* $out/lib
-        cp -d ${glibc.out}/lib/libdl*.so* $out/lib
-        cp -d ${glibc.out}/lib/librt*.so*  $out/lib
-        cp -d ${glibc.out}/lib/libpthread*.so* $out/lib
-        cp -d ${glibc.out}/lib/libnsl*.so* $out/lib
-        cp -d ${glibc.out}/lib/libutil*.so* $out/lib
-        cp -d ${glibc.out}/lib/libnss*.so* $out/lib
-        cp -d ${glibc.out}/lib/libresolv*.so* $out/lib
-        cp -d ${glibc.out}/lib/crt?.o $out/lib
-
-        cp -rL ${glibc.dev}/include $out
-        chmod -R u+w "$out"
-
-        # glibc can contain linker scripts: find them, copy their deps,
-        # and get rid of absolute paths (nuke-refs would make them useless)
-        local lScripts=$(grep --files-with-matches --max-count=1 'GNU ld script' -R "$out/lib")
-        cp -d -t "$out/lib/" $(cat $lScripts | tr " " "\n" | grep -F '${glibc.out}' | sort -u)
-        for f in $lScripts; do
-          substituteInPlace "$f" --replace '${glibc.out}/lib/' ""
-        done
-
-        # Hopefully we won't need these.
-        rm -rf $out/include/mtd $out/include/rdma $out/include/sound $out/include/video
-        find $out/include -name .install -exec rm {} \;
-        find $out/include -name ..install.cmd -exec rm {} \;
-        mv $out/include $out/include-glibc
-
-        # Copy coreutils, bash, etc.
-        cp ${coreutilsMinimal}/bin/* $out/bin
-        (cd $out/bin && rm vdir dir sha*sum pinky factor pathchk runcon shuf who whoami shred users)
-
-        cp ${bash}/bin/bash $out/bin
-        cp ${findutils}/bin/find $out/bin
-        cp ${findutils}/bin/xargs $out/bin
-        cp -d ${diffutils}/bin/* $out/bin
-        cp -d ${gnused}/bin/* $out/bin
-        cp -d ${gnugrep}/bin/grep $out/bin
-        cp ${gawk}/bin/gawk $out/bin
-        cp -d ${gawk}/bin/awk $out/bin
-        cp ${tarMinimal}/bin/tar $out/bin
-        cp ${gzip}/bin/gzip $out/bin
-        cp ${bzip2.bin}/bin/bzip2 $out/bin
-        cp -d ${gnumake}/bin/* $out/bin
-        cp -d ${patch}/bin/* $out/bin
-        cp ${patchelf}/bin/* $out/bin
-
-        cp -d ${gnugrep.pcre.out}/lib/libpcre*.so* $out/lib # needed by grep
-
-        # Copy what we need of GCC.
-        cp -d ${gcc.out}/bin/gcc $out/bin
-        cp -d ${gcc.out}/bin/cpp $out/bin
-        cp -d ${gcc.out}/bin/g++ $out/bin
-        cp -d ${gcc.lib}/lib*/libgcc_s.so* $out/lib
-        cp -d ${gcc.lib}/lib*/libstdc++.so* $out/lib
-        cp -rd ${gcc.out}/lib/gcc $out/lib
-        chmod -R u+w $out/lib
-        rm -f $out/lib/gcc/*/*/include*/linux
-        rm -f $out/lib/gcc/*/*/include*/sound
-        rm -rf $out/lib/gcc/*/*/include*/root
-        rm -f $out/lib/gcc/*/*/include-fixed/asm
-        rm -rf $out/lib/gcc/*/*/plugin
-        #rm -f $out/lib/gcc/*/*/*.a
-        cp -rd ${gcc.out}/libexec/* $out/libexec
-        chmod -R u+w $out/libexec
-        rm -rf $out/libexec/gcc/*/*/plugin
-        mkdir $out/include
-        cp -rd ${gcc.out}/include/c++ $out/include
-        chmod -R u+w $out/include
-        rm -rf $out/include/c++/*/ext/pb_ds
-        rm -rf $out/include/c++/*/ext/parallel
-
-        cp -d ${gmpxx.out}/lib/libgmp*.so* $out/lib
-        cp -d ${mpfr.out}/lib/libmpfr*.so* $out/lib
-        cp -d ${libmpc.out}/lib/libmpc*.so* $out/lib
-        cp -d ${zlib.out}/lib/libz.so* $out/lib
-        cp -d ${libelf}/lib/libelf.so* $out/lib
-
-        # These needed for cross but not native tools because the stdenv
-        # GCC has certain things built in statically. See
-        # pkgs/stdenv/linux/default.nix for the details.
-        cp -d ${isl}/lib/libisl*.so* $out/lib
-
-        cp -d ${bzip2.out}/lib/libbz2.so* $out/lib
-
-        # Copy binutils.
-        for i in as ld ar ranlib nm strip readelf objdump; do
-          cp ${binutils.bintools.out}/bin/$i $out/bin
-        done
-
-        chmod -R u+w $out
-
-        # Strip executables even further.
-        for i in $out/bin/* $out/libexec/gcc/*/*/*; do
-            if test -x $i -a ! -L $i; then
-                chmod +w $i
-                $crossConfig-strip -s $i || true
-            fi
-        done
-
-        nuke-refs $out/bin/*
-        nuke-refs $out/lib/*
-        nuke-refs $out/libexec/gcc/*/*/*
-        nuke-refs $out/lib/gcc/*/*/*
-
-        mkdir $out/.pack
-        mv $out/* $out/.pack
-        mv $out/.pack $out/pack
-
-        mkdir $out/on-server
-        tar cvfJ $out/on-server/bootstrap-tools.tar.xz --hard-dereference --sort=name --numeric-owner --owner=0 --group=0 --mtime=@1 -C $out/pack .
-        cp ${busyboxMinimal}/bin/busybox $out/on-server
-        chmod u+w $out/on-server/busybox
-        nuke-refs $out/on-server/busybox
-      ''; # */
-
-      # The result should not contain any references (store paths) so
-      # that we can safely copy them out of the store and to other
-      # locations in the store.
-      allowedReferences = [];
-    };
-
-  dist = pkgs.stdenv.mkDerivation {
-    name = "stdenv-bootstrap-tools-cross";
-
-    buildCommand = ''
-      mkdir -p $out/nix-support
-      echo "file tarball ${build}/on-server/bootstrap-tools.tar.xz" >> $out/nix-support/hydra-build-products
-      echo "file busybox ${build}/on-server/busybox" >> $out/nix-support/hydra-build-products
-    '';
-  };
-}
-
-); in {
-    armv5tel = buildFor "armv5tel";
-    armv6l = buildFor "armv6l";
-    armv7l = buildFor "armv7l";
-    aarch64 = buildFor "aarch64";
-    scaleway = buildFor "scaleway";
-    pogoplug4 = buildFor "pogoplug4";
+in with (import ../../../lib).systems.examples; {
+  armv5tel  = make sheevaplug;
+  scaleway  = make scaleway-c1;
+  pogoplug4 = make pogoplug4;
+  armv6l    = make raspberryPi;
+  armv7l    = make armv7l-hf-multiplatform;
+  aarch64   = make aarch64-multiplatform;
 }

pkgs/stdenv/linux/make-bootstrap-tools.nix

···
-{ system ? builtins.currentSystem }:
+{ localSystem ? { system = builtins.currentSystem; }
+, crossSystem ? null
+}:
 
-with import ../../.. {inherit system;};
-
-rec {
+let
+  pkgs = import ../../.. { inherit localSystem crossSystem; };
+  glibc = if pkgs.hostPlatform != pkgs.buildPlatform
+          then pkgs.glibcCross
+          else pkgs.glibc;
+in with pkgs; rec {
 
 
   coreutilsMinimal = coreutils.override (args: {
···
     stdenv.mkDerivation {
       name = "stdenv-bootstrap-tools";
 
-      buildInputs = [nukeReferences cpio];
+      nativeBuildInputs = [ buildPackages.nukeReferences buildPackages.cpio ];
 
       buildCommand = ''
         set -x
···
 
         cp -d ${gmpxx.out}/lib/libgmp*.so* $out/lib
         cp -d ${mpfr.out}/lib/libmpfr*.so* $out/lib
-        cp -d ${libmpc}/lib/libmpc*.so* $out/lib
+        cp -d ${libmpc.out}/lib/libmpc*.so* $out/lib
         cp -d ${zlib.out}/lib/libz.so* $out/lib
         cp -d ${libelf}/lib/libelf.so* $out/lib
 
+      '' + lib.optionalString (hostPlatform != buildPlatform) ''
+        # These needed for cross but not native tools because the stdenv
+        # GCC has certain things built in statically. See
+        # pkgs/stdenv/linux/default.nix for the details.
+        cp -d ${isl_0_14.out}/lib/libisl*.so* $out/lib
+
+      '' + ''
         cp -d ${bzip2.out}/lib/libbz2.so* $out/lib
 
         # Copy binutils.
···
         for i in $out/bin/* $out/libexec/gcc/*/*/*; do
             if test -x $i -a ! -L $i; then
                 chmod +w $i
-                strip -s $i || true
+                $STRIP -s $i || true
             fi
         done
 
         nuke-refs $out/bin/*
         nuke-refs $out/lib/*
         nuke-refs $out/libexec/gcc/*/*/*
+        nuke-refs $out/lib/gcc/*/*/*
 
         mkdir $out/.pack
         mv $out/* $out/.pack
···
     bootstrapTools = runCommand "bootstrap-tools.tar.xz" {} "cp ${build}/on-server/bootstrap-tools.tar.xz $out";
   };
 
-  bootstrapTools = import ./bootstrap-tools { inherit system bootstrapFiles; };
+  bootstrapTools = import ./bootstrap-tools {
+    inherit (hostPlatform) system;
+    inherit bootstrapFiles;
+  };
 
   test = derivation {
     name = "test-bootstrap-tools";
-    inherit system;
+    inherit (hostPlatform) system;
     builder = bootstrapFiles.busybox;
     args = [ "ash" "-e" "-c" "eval \"$buildCommand\"" ];
 

pkgs/top-level/release-cross.nix

···
   bootstrapTools = let
     tools = import ../stdenv/linux/make-bootstrap-tools-cross.nix { system = "x86_64-linux"; };
     maintainers = [ lib.maintainers.dezgeg ];
-    mkBootstrapToolsJob = drv: hydraJob' (lib.addMetaAttrs { inherit maintainers; } drv);
+    mkBootstrapToolsJob = drv:
+      assert lib.elem drv.system (supportedSystems ++ [ "aarch64-linux" ]);
+      hydraJob' (lib.addMetaAttrs { inherit maintainers; } drv);
   in lib.mapAttrsRecursiveCond (as: !lib.isDerivation as) (name: mkBootstrapToolsJob) tools;
 }

pkgs/top-level/release.nix

···
       stdenvBootstrapTools = with lib;
         genAttrs systemsWithAnySupport
           (system: {
-            inherit (import ../stdenv/linux/make-bootstrap-tools.nix { inherit system; })
+            inherit
+              (import ../stdenv/linux/make-bootstrap-tools.nix {
+                localSystem = { inherit system; };
+              })
               dist test;
           })
         # darwin is special in this