forked from mirrors/nixpkgs
dadc7eb329
Whenever we create scripts that are installed to $out, we must use runtimeShell in order to get the shell that can be executed on the machine we create the package for. This is relevant for cross-compiling. The only use case for stdenv.shell are scripts that are executed as part of the build system. Usages in checkPhase are borderline however to decrease the likelyhood of people copying the wrong examples, I decided to use runtimeShell as well.
314 lines
11 KiB
Nix
314 lines
11 KiB
Nix
{ stdenv, callPackage, lib, fetchurl, fetchpatch, runCommand, makeWrapper
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, zip, unzip, bash, writeCBin, coreutils
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, which, python, perl, gawk, gnused, gnutar, gnugrep, gzip, findutils
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# Apple dependencies
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, cctools, clang, libcxx, CoreFoundation, CoreServices, Foundation
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# Allow to independently override the jdks used to build and run respectively
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, buildJdk, runJdk
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, buildJdkName
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, runtimeShell
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# Always assume all markers valid (don't redownload dependencies).
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# Also, don't clean up environment variables.
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, enableNixHacks ? false
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}:
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let
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srcDeps = lib.singleton (
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fetchurl {
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url = "https://github.com/google/desugar_jdk_libs/archive/915f566d1dc23bc5a8975320cd2ff71be108eb9c.zip";
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sha256 = "0b926df7yxyyyiwm9cmdijy6kplf0sghm23sf163zh8wrk87wfi7";
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}
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);
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distDir = runCommand "bazel-deps" {} ''
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mkdir -p $out
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for i in ${builtins.toString srcDeps}; do cp $i $out/$(stripHash $i); done
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'';
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defaultShellPath = lib.makeBinPath
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# Keep this list conservative. For more exotic tools, prefer to use
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# @rules_nixpkgs to pull in tools from the nix repository. Example:
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#
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# WORKSPACE:
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#
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# nixpkgs_git_repository(
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# name = "nixpkgs",
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# revision = "def5124ec8367efdba95a99523dd06d918cb0ae8",
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# )
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#
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# # This defines an external Bazel workspace.
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# nixpkgs_package(
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# name = "bison",
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# repositories = { "nixpkgs": "@nixpkgs//:default.nix" },
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# )
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#
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# some/BUILD.bazel:
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#
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# genrule(
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# ...
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# cmd = "$(location @bison//:bin/bison) -other -args",
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# tools = [
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# ...
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# "@bison//:bin/bison",
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# ],
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# )
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#
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[ bash coreutils findutils gawk gnugrep gnutar gnused gzip which unzip ];
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# Java toolchain used for the build and tests
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javaToolchain = "@bazel_tools//tools/jdk:toolchain_host${buildJdkName}";
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in
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stdenv.mkDerivation rec {
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version = "0.22.0";
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meta = with lib; {
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homepage = "https://github.com/bazelbuild/bazel/";
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description = "Build tool that builds code quickly and reliably";
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license = licenses.asl20;
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maintainers = [ maintainers.mboes ];
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platforms = platforms.linux ++ platforms.darwin;
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};
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# Additional tests that check bazel’s functionality. Execute
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#
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# nix-build . -A bazel.tests
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#
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# in the nixpkgs checkout root to exercise them locally.
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passthru.tests = {
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pythonBinPath = callPackage ./python-bin-path-test.nix {};
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bashTools = callPackage ./bash-tools-test.nix {};
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};
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name = "bazel-${version}";
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src = fetchurl {
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url = "https://github.com/bazelbuild/bazel/releases/download/${version}/${name}-dist.zip";
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sha256 = "0hannnvia8rvmi2v5d97j1f6wv0m1kxkd5hq4aqp0dqjr0ka4q38";
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};
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sourceRoot = ".";
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patches = [
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./python-stub-path-fix.patch
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] ++ lib.optional enableNixHacks ./nix-hacks.patch;
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# Bazel expects several utils to be available in Bash even without PATH. Hence this hack.
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customBash = writeCBin "bash" ''
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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extern char **environ;
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int main(int argc, char *argv[]) {
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char *path = getenv("PATH");
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char *pathToAppend = "${defaultShellPath}";
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char *newPath;
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if (path != NULL) {
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int length = strlen(path) + 1 + strlen(pathToAppend) + 1;
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newPath = malloc(length * sizeof(char));
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snprintf(newPath, length, "%s:%s", path, pathToAppend);
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} else {
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newPath = pathToAppend;
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}
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setenv("PATH", newPath, 1);
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execve("${bash}/bin/bash", argv, environ);
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return 0;
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}
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'';
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postPatch = let
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darwinPatches = ''
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# Disable Bazel's Xcode toolchain detection which would configure compilers
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# and linkers from Xcode instead of from PATH
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export BAZEL_USE_CPP_ONLY_TOOLCHAIN=1
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# Explicitly configure gcov since we don't have it on Darwin, so autodetection fails
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export GCOV=${coreutils}/bin/false
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# Framework search paths aren't added by bintools hook
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# https://github.com/NixOS/nixpkgs/pull/41914
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export NIX_LDFLAGS="$NIX_LDFLAGS -F${CoreFoundation}/Library/Frameworks -F${CoreServices}/Library/Frameworks -F${Foundation}/Library/Frameworks"
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# libcxx includes aren't added by libcxx hook
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# https://github.com/NixOS/nixpkgs/pull/41589
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export NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE -isystem ${libcxx}/include/c++/v1"
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# 10.10 apple_sdk Foundation doesn't have type arguments on classes
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# Remove this when we update apple_sdk
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sed -i -e 's/<.*\*>//g' tools/osx/xcode_locator.m
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# don't use system installed Xcode to run clang, use Nix clang instead
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sed -i -e "s;/usr/bin/xcrun clang;${clang}/bin/clang $NIX_CFLAGS_COMPILE $NIX_LDFLAGS -framework CoreFoundation;g" \
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scripts/bootstrap/compile.sh \
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src/tools/xcode/realpath/BUILD \
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src/tools/xcode/stdredirect/BUILD \
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tools/osx/BUILD
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# clang installed from Xcode has a compatibility wrapper that forwards
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# invocations of gcc to clang, but vanilla clang doesn't
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sed -i -e 's;_find_generic(repository_ctx, "gcc", "CC", overriden_tools);_find_generic(repository_ctx, "clang", "CC", overriden_tools);g' tools/cpp/unix_cc_configure.bzl
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sed -i -e 's;/usr/bin/libtool;${cctools}/bin/libtool;g' tools/cpp/unix_cc_configure.bzl
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wrappers=( tools/cpp/osx_cc_wrapper.sh tools/cpp/osx_cc_wrapper.sh.tpl )
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for wrapper in "''${wrappers[@]}"; do
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sed -i -e "s,/usr/bin/install_name_tool,${cctools}/bin/install_name_tool,g" $wrapper
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done
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'';
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genericPatches = ''
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# Substitute python's stub shebang to plain python path. (see TODO add pr URL)
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# See also `postFixup` where python is added to $out/nix-support
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substituteInPlace src/main/java/com/google/devtools/build/lib/bazel/rules/python/python_stub_template.txt\
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--replace "/usr/bin/env python" "${python}/bin/python" \
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--replace "NIX_STORE_PYTHON_PATH" "${python}/bin/python" \
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# substituteInPlace is rather slow, so prefilter the files with grep
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grep -rlZ /bin src/main/java/com/google/devtools | while IFS="" read -r -d "" path; do
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# If you add more replacements here, you must change the grep above!
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# Only files containing /bin are taken into account.
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substituteInPlace "$path" \
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--replace /bin/bash ${customBash}/bin/bash \
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--replace /usr/bin/env ${coreutils}/bin/env \
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--replace /bin/true ${coreutils}/bin/true
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done
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# Fixup scripts that generate scripts. Not fixed up by patchShebangs below.
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substituteInPlace scripts/bootstrap/compile.sh \
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--replace /bin/sh ${customBash}/bin/bash
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# add nix environment vars to .bazelrc
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cat >> .bazelrc <<EOF
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build --experimental_distdir=${distDir}
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fetch --experimental_distdir=${distDir}
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build --copt="$(echo $NIX_CFLAGS_COMPILE | sed -e 's/ /" --copt="/g')"
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build --host_copt="$(echo $NIX_CFLAGS_COMPILE | sed -e 's/ /" --host_copt="/g')"
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build --linkopt="-Wl,$(echo $NIX_LDFLAGS | sed -e 's/ /" --linkopt="-Wl,/g')"
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build --host_linkopt="-Wl,$(echo $NIX_LDFLAGS | sed -e 's/ /" --host_linkopt="-Wl,/g')"
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build --host_javabase='@local_jdk//:jdk'
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build --host_java_toolchain='${javaToolchain}'
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EOF
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# add the same environment vars to compile.sh
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sed -e "/\$command \\\\$/a --copt=\"$(echo $NIX_CFLAGS_COMPILE | sed -e 's/ /" --copt=\"/g')\" \\\\" \
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-e "/\$command \\\\$/a --host_copt=\"$(echo $NIX_CFLAGS_COMPILE | sed -e 's/ /" --host_copt=\"/g')\" \\\\" \
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-e "/\$command \\\\$/a --linkopt=\"-Wl,$(echo $NIX_LDFLAGS | sed -e 's/ /" --linkopt=\"-Wl,/g')\" \\\\" \
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-e "/\$command \\\\$/a --host_linkopt=\"-Wl,$(echo $NIX_LDFLAGS | sed -e 's/ /" --host_linkopt=\"-Wl,/g')\" \\\\" \
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-e "/\$command \\\\$/a --host_javabase='@local_jdk//:jdk' \\\\" \
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-e "/\$command \\\\$/a --host_java_toolchain='${javaToolchain}' \\\\" \
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-i scripts/bootstrap/compile.sh
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# --experimental_strict_action_env (which will soon become the
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# default, see bazelbuild/bazel#2574) hardcodes the default
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# action environment to a value that on NixOS at least is bogus.
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# So we hardcode it to something useful.
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substituteInPlace \
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src/main/java/com/google/devtools/build/lib/bazel/rules/BazelRuleClassProvider.java \
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--replace /bin:/usr/bin ${defaultShellPath}
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# append the PATH with defaultShellPath in tools/bash/runfiles/runfiles.bash
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echo "PATH=$PATH:${defaultShellPath}" >> runfiles.bash.tmp
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cat tools/bash/runfiles/runfiles.bash >> runfiles.bash.tmp
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mv runfiles.bash.tmp tools/bash/runfiles/runfiles.bash
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patchShebangs .
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'';
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in lib.optionalString stdenv.hostPlatform.isDarwin darwinPatches
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+ genericPatches;
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buildInputs = [
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buildJdk
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];
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# when a command can’t be found in a bazel build, you might also
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# need to add it to `defaultShellPath`.
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nativeBuildInputs = [
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zip
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python
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unzip
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makeWrapper
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which
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customBash
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] ++ lib.optionals (stdenv.isDarwin) [ cctools clang libcxx CoreFoundation CoreServices Foundation ];
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# If TMPDIR is in the unpack dir we run afoul of blaze's infinite symlink
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# detector (see com.google.devtools.build.lib.skyframe.FileFunction).
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# Change this to $(mktemp -d) as soon as we figure out why.
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buildPhase = ''
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export TMPDIR=/tmp/.bazel-$UID
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./compile.sh
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scripts/generate_bash_completion.sh \
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--bazel=./output/bazel \
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--output=output/bazel-complete.bash \
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--prepend=scripts/bazel-complete-header.bash \
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--prepend=scripts/bazel-complete-template.bash
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'';
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installPhase = ''
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mkdir -p $out/bin
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# official wrapper scripts that searches for $WORKSPACE_ROOT/tools/bazel
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# if it can’t find something in tools, it calls $out/bin/bazel-real
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cp scripts/packages/bazel.sh $out/bin/bazel
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mv output/bazel $out/bin/bazel-real
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wrapProgram "$out/bin/bazel" --add-flags --server_javabase="${runJdk}"
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# shell completion files
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mkdir -p $out/share/bash-completion/completions $out/share/zsh/site-functions
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mv output/bazel-complete.bash $out/share/bash-completion/completions/bazel
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cp scripts/zsh_completion/_bazel $out/share/zsh/site-functions/
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'';
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doInstallCheck = true;
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installCheckPhase = ''
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export TEST_TMPDIR=$(pwd)
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hello_test () {
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$out/bin/bazel test \
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--test_output=errors \
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--java_toolchain='${javaToolchain}' \
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examples/cpp:hello-success_test \
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examples/java-native/src/test/java/com/example/myproject:hello
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}
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# test whether $WORKSPACE_ROOT/tools/bazel works
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mkdir -p tools
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cat > tools/bazel <<"EOF"
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#!${runtimeShell} -e
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exit 1
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EOF
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chmod +x tools/bazel
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# first call should fail if tools/bazel is used
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! hello_test
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cat > tools/bazel <<"EOF"
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#!${runtimeShell} -e
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exec "$BAZEL_REAL" "$@"
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EOF
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# second call succeeds because it defers to $out/bin/bazel-real
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hello_test
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'';
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# Save paths to hardcoded dependencies so Nix can detect them.
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postFixup = ''
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mkdir -p $out/nix-support
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echo "${customBash} ${defaultShellPath}" >> $out/nix-support/depends
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# The templates get tar’d up into a .jar,
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# so nix can’t detect python is needed in the runtime closure
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echo "${python}" >> $out/nix-support/depends
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'';
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dontStrip = true;
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dontPatchELF = true;
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}
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