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{ stdenv, lib, fetchurl, fetchpatch, runCommand, makeWrapper
, jdk, zip, unzip, bash, writeCBin, coreutils
, which, python, perl, gnused, gnugrep, findutils
# Apple dependencies
, cctools, clang, libcxx, CoreFoundation, CoreServices, Foundation
# Allow to independently override the jdks used to build and run respectively
, buildJdk ? jdk, runJdk ? jdk
# Always assume all markers valid (don't redownload dependencies).
# Also, don't clean up environment variables.
, enableNixHacks ? false
}:
let
srcDeps = lib.singleton (
fetchurl {
url = "https://github.com/google/desugar_jdk_libs/archive/fd937f4180c1b557805219af4482f1a27eb0ff2b.zip";
sha256 = "04hs399340xfwcdajbbcpywnb2syp6z5ydwg966if3hqdb2zrf23";
}
);
distDir = runCommand "bazel-deps" {} ''
mkdir -p $out
for i in ${builtins.toString srcDeps}; do cp $i $out/$(stripHash $i); done
'';
defaultShellPath = lib.makeBinPath [ bash coreutils findutils gnugrep gnused which ];
in
stdenv.mkDerivation rec {
version = "0.18.0";
meta = with lib; {
homepage = "https://github.com/bazelbuild/bazel/";
description = "Build tool that builds code quickly and reliably";
license = licenses.asl20;
maintainers = [ maintainers.mboes ];
platforms = platforms.linux ++ platforms.darwin;
};
name = "bazel-${version}";
src = fetchurl {
url = "https://github.com/bazelbuild/bazel/releases/download/${version}/bazel-${version}-dist.zip";
sha256 = "0mbi4n4wp1x73l8qksg4vyh2sba52xh9hfl2m518gv41g0pnvs6h";
};
sourceRoot = ".";
patches =
lib.optional enableNixHacks ./nix-hacks.patch;
# Bazel expects several utils to be available in Bash even without PATH. Hence this hack.
customBash = writeCBin "bash" ''
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
extern char **environ;
int main(int argc, char *argv[]) {
char *path = getenv("PATH");
char *pathToAppend = "${defaultShellPath}";
char *newPath;
if (path != NULL) {
int length = strlen(path) + 1 + strlen(pathToAppend) + 1;
newPath = malloc(length * sizeof(char));
snprintf(newPath, length, "%s:%s", path, pathToAppend);
} else {
newPath = pathToAppend;
}
setenv("PATH", newPath, 1);
execve("${bash}/bin/bash", argv, environ);
return 0;
}
'';
postPatch = let
darwinPatches = ''
# Disable Bazel's Xcode toolchain detection which would configure compilers
# and linkers from Xcode instead of from PATH
export BAZEL_USE_CPP_ONLY_TOOLCHAIN=1
# Explicitly configure gcov since we don't have it on Darwin, so autodetection fails
export GCOV=${coreutils}/bin/false
# Framework search paths aren't added by bintools hook
# https://github.com/NixOS/nixpkgs/pull/41914
export NIX_LDFLAGS="$NIX_LDFLAGS -F${CoreFoundation}/Library/Frameworks -F${CoreServices}/Library/Frameworks -F${Foundation}/Library/Frameworks"
# libcxx includes aren't added by libcxx hook
# https://github.com/NixOS/nixpkgs/pull/41589
export NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE -isystem ${libcxx}/include/c++/v1"
# 10.10 apple_sdk Foundation doesn't have type arguments on classes
# Remove this when we update apple_sdk
sed -i -e 's/<.*\*>//g' tools/osx/xcode_locator.m
# don't use system installed Xcode to run clang, use Nix clang instead
sed -i -e "s;/usr/bin/xcrun clang;${clang}/bin/clang $NIX_CFLAGS_COMPILE $NIX_LDFLAGS -framework CoreFoundation;g" \
scripts/bootstrap/compile.sh \
src/tools/xcode/realpath/BUILD \
src/tools/xcode/stdredirect/BUILD \
tools/osx/BUILD
# clang installed from Xcode has a compatibility wrapper that forwards
# invocations of gcc to clang, but vanilla clang doesn't
sed -i -e 's;_find_generic(repository_ctx, "gcc", "CC", overriden_tools);_find_generic(repository_ctx, "clang", "CC", overriden_tools);g' tools/cpp/unix_cc_configure.bzl
sed -i -e 's;/usr/bin/libtool;${cctools}/bin/libtool;g' tools/cpp/unix_cc_configure.bzl
wrappers=( tools/cpp/osx_cc_wrapper.sh tools/cpp/osx_cc_wrapper.sh.tpl )
for wrapper in "''${wrappers[@]}"; do
sed -i -e "s,/usr/bin/install_name_tool,${cctools}/bin/install_name_tool,g" $wrapper
done
'';
genericPatches = ''
find src/main/java/com/google/devtools -type f -print0 | while IFS="" read -r -d "" path; do
substituteInPlace "$path" \
--replace /bin/bash ${customBash}/bin/bash \
--replace /usr/bin/env ${coreutils}/bin/env
done
# Fixup scripts that generate scripts. Not fixed up by patchShebangs below.
substituteInPlace scripts/bootstrap/compile.sh \
--replace /bin/sh ${customBash}/bin/bash
echo "build --experimental_distdir=${distDir}" >> .bazelrc
echo "fetch --experimental_distdir=${distDir}" >> .bazelrc
echo "build --copt=\"$(echo $NIX_CFLAGS_COMPILE | sed -e 's/ /" --copt=\"/g')\"" >> .bazelrc
echo "build --host_copt=\"$(echo $NIX_CFLAGS_COMPILE | sed -e 's/ /" --host_copt=\"/g')\"" >> .bazelrc
echo "build --linkopt=\"-Wl,$(echo $NIX_LDFLAGS | sed -e 's/ /" --linkopt=\"-Wl,/g')\"" >> .bazelrc
echo "build --host_linkopt=\"-Wl,$(echo $NIX_LDFLAGS | sed -e 's/ /" --host_linkopt=\"-Wl,/g')\"" >> .bazelrc
sed -i -e "378 a --copt=\"$(echo $NIX_CFLAGS_COMPILE | sed -e 's/ /" --copt=\"/g')\" \\\\" scripts/bootstrap/compile.sh
sed -i -e "378 a --host_copt=\"$(echo $NIX_CFLAGS_COMPILE | sed -e 's/ /" --host_copt=\"/g')\" \\\\" scripts/bootstrap/compile.sh
sed -i -e "378 a --linkopt=\"-Wl,$(echo $NIX_LDFLAGS | sed -e 's/ /" --linkopt=\"-Wl,/g')\" \\\\" scripts/bootstrap/compile.sh
sed -i -e "378 a --host_linkopt=\"-Wl,$(echo $NIX_LDFLAGS | sed -e 's/ /" --host_linkopt=\"-Wl,/g')\" \\\\" scripts/bootstrap/compile.sh
# --experimental_strict_action_env (which will soon become the
# default, see bazelbuild/bazel#2574) hardcodes the default
# action environment to a value that on NixOS at least is bogus.
# So we hardcode it to something useful.
substituteInPlace \
src/main/java/com/google/devtools/build/lib/bazel/rules/BazelRuleClassProvider.java \
--replace /bin:/usr/bin ${defaultShellPath}
# append the PATH with defaultShellPath in tools/bash/runfiles/runfiles.bash
echo "PATH=$PATH:${defaultShellPath}" >> runfiles.bash.tmp
cat tools/bash/runfiles/runfiles.bash >> runfiles.bash.tmp
mv runfiles.bash.tmp tools/bash/runfiles/runfiles.bash
patchShebangs .
'';
in lib.optionalString stdenv.hostPlatform.isDarwin darwinPatches
+ genericPatches;
buildInputs = [
buildJdk
];
nativeBuildInputs = [
zip
python
unzip
makeWrapper
which
customBash
] ++ lib.optionals (stdenv.isDarwin) [ cctools clang libcxx CoreFoundation CoreServices Foundation ];
# If TMPDIR is in the unpack dir we run afoul of blaze's infinite symlink
# detector (see com.google.devtools.build.lib.skyframe.FileFunction).
# Change this to $(mktemp -d) as soon as we figure out why.
buildPhase = ''
export TMPDIR=/tmp/.bazel-$UID
./compile.sh
scripts/generate_bash_completion.sh \
--bazel=./output/bazel \
--output=output/bazel-complete.bash \
--prepend=scripts/bazel-complete-template.bash
'';
# Build the CPP and Java examples to verify that Bazel works.
doCheck = true;
checkPhase = ''
export TEST_TMPDIR=$(pwd)
./output/bazel test --test_output=errors \
examples/cpp:hello-success_test \
examples/java-native/src/test/java/com/example/myproject:hello
'';
installPhase = ''
mkdir -p $out/bin
# official wrapper scripts that searches for $WORKSPACE_ROOT/tools/bazel
# if it can’t find something in tools, it calls $out/bin/bazel-real
cp scripts/packages/bazel.sh $out/bin/bazel
mv output/bazel $out/bin/bazel-real
wrapProgram "$out/bin/bazel" --set JAVA_HOME "${runJdk}"
# shell completion files
mkdir -p $out/share/bash-completion/completions $out/share/zsh/site-functions
mv output/bazel-complete.bash $out/share/bash-completion/completions/bazel
cp scripts/zsh_completion/_bazel $out/share/zsh/site-functions/
'';
doInstallCheck = true;
installCheckPhase = ''
export TEST_TMPDIR=$(pwd)
hello_test () {
$out/bin/bazel test --test_output=errors \
examples/cpp:hello-success_test \
examples/java-native/src/test/java/com/example/myproject:hello
}
# test whether $WORKSPACE_ROOT/tools/bazel works
mkdir -p tools
cat > tools/bazel <<"EOF"
#!${stdenv.shell} -e
exit 1
EOF
chmod +x tools/bazel
# first call should fail if tools/bazel is used
! hello_test
cat > tools/bazel <<"EOF"
#!${stdenv.shell} -e
exec "$BAZEL_REAL" "$@"
EOF
# second call succeeds because it defers to $out/bin/bazel-real
hello_test
'';
# Save paths to hardcoded dependencies so Nix can detect them.
postFixup = ''
mkdir -p $out/nix-support
echo "${customBash} ${defaultShellPath}" > $out/nix-support/depends
'';
dontStrip = true;
dontPatchELF = true;
}
|