nixpkgs/pkgs/development/go-modules/generic/default.nix
2016-04-07 17:45:20 +02:00

177 lines
4.8 KiB
Nix

{ go, govers, parallel, lib }:
{ name, buildInputs ? [], nativeBuildInputs ? [], passthru ? {}, preFixup ? ""
# We want parallel builds by default
, enableParallelBuilding ? true
# Disabled flag
, disabled ? false
# Go import path of the package
, goPackagePath
# Go package aliases
, goPackageAliases ? [ ]
# Extra sources to include in the gopath
, extraSrcs ? [ ]
, dontRenameImports ? false
# Do not enable this without good reason
# IE: programs coupled with the compiler
, allowGoReference ? false
, meta ? {}, ... } @ args':
if disabled then throw "${name} not supported for go ${go.meta.branch}" else
let
args = lib.filterAttrs (name: _: name != "extraSrcs") args';
removeReferences = [ ] ++ lib.optional (!allowGoReference) go;
removeExpr = refs: lib.flip lib.concatMapStrings refs (ref: ''
| sed "s,${ref},$(echo "${ref}" | sed "s,$NIX_STORE/[^-]*,$NIX_STORE/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee,"),g" \
'');
in
go.stdenv.mkDerivation (
(builtins.removeAttrs args [ "goPackageAliases" "disabled" ]) // {
name = "go${go.meta.branch}-${name}";
nativeBuildInputs = [ go parallel ]
++ (lib.optional (!dontRenameImports) govers) ++ nativeBuildInputs;
buildInputs = [ go ] ++ buildInputs;
configurePhase = args.configurePhase or ''
runHook preConfigure
# Extract the source
cd "$NIX_BUILD_TOP"
mkdir -p "go/src/$(dirname "$goPackagePath")"
mv "$sourceRoot" "go/src/$goPackagePath"
'' + lib.flip lib.concatMapStrings extraSrcs ({ src, goPackagePath }: ''
mkdir extraSrc
(cd extraSrc; unpackFile "${src}")
mkdir -p "go/src/$(dirname "${goPackagePath}")"
chmod -R u+w extraSrc/*
mv extraSrc/* "go/src/${goPackagePath}"
rmdir extraSrc
'') + ''
export GOPATH=$NIX_BUILD_TOP/go:$GOPATH
runHook postConfigure
'';
renameImports = args.renameImports or (
let
inputsWithAliases = lib.filter (x: x ? goPackageAliases)
(buildInputs ++ (args.propagatedBuildInputs or [ ]));
rename = to: from: "echo Renaming '${from}' to '${to}'; govers -d -m ${from} ${to}";
renames = p: lib.concatMapStringsSep "\n" (rename p.goPackagePath) p.goPackageAliases;
in lib.concatMapStringsSep "\n" renames inputsWithAliases);
buildPhase = args.buildPhase or ''
runHook preBuild
runHook renameImports
buildGoDir() {
local d; local cmd;
cmd="$1"
d="$2"
echo "$d" | grep -q "\(/_\|examples\|Godeps\)" && return 0
[ -n "$excludedPackages" ] && echo "$d" | grep -q "$excludedPackages" && return 0
local OUT
if ! OUT="$(go $cmd $buildFlags "''${buildFlagsArray[@]}" -v $d 2>&1)"; then
if ! echo "$OUT" | grep -q 'no buildable Go source files'; then
echo "$OUT" >&2
return 1
fi
fi
if [ -n "$OUT" ]; then
echo "$OUT" >&2
fi
return 0
}
getGoDirs() {
local type;
type="$1"
if [ -n "$subPackages" ]; then
echo "$subPackages" | sed "s,\(^\| \),\1$goPackagePath/,g"
else
pushd go/src >/dev/null
find "$goPackagePath" -type f -name \*$type.go -exec dirname {} \; | grep -v "/vendor/" | sort | uniq
popd >/dev/null
fi
}
export -f buildGoDir # parallel needs to see the function
if [ -z "$enableParallelBuilding" ]; then
export NIX_BUILD_CORES=1
fi
getGoDirs "" | parallel -j $NIX_BUILD_CORES buildGoDir install
runHook postBuild
'';
checkPhase = args.checkPhase or ''
runHook preCheck
getGoDirs test | parallel -j $NIX_BUILD_CORES buildGoDir test
runHook postCheck
'';
installPhase = args.installPhase or ''
runHook preInstall
mkdir -p $out
pushd "$NIX_BUILD_TOP/go"
while read f; do
echo "$f" | grep -q '^./\(src\|pkg/[^/]*\)/${goPackagePath}' || continue
mkdir -p "$(dirname "$out/share/go/$f")"
cp "$NIX_BUILD_TOP/go/$f" "$out/share/go/$f"
done < <(find . -type f)
popd
mkdir -p $bin
dir="$NIX_BUILD_TOP/go/bin"
[ -e "$dir" ] && cp -r $dir $bin
runHook postInstall
'';
preFixup = preFixup + ''
while read file; do
cat $file ${removeExpr removeReferences} > $file.tmp
mv $file.tmp $file
chmod +x $file
done < <(find $bin/bin -type f 2>/dev/null)
'';
disallowedReferences = lib.optional (!allowGoReference) go
++ lib.optional (!dontRenameImports) govers;
passthru = passthru // lib.optionalAttrs (goPackageAliases != []) { inherit goPackageAliases; };
enableParallelBuilding = enableParallelBuilding;
# I prefer to call this dev but propagatedBuildInputs expects $out to exist
outputs = args.outputs or [ "out" "bin" ];
meta = {
# Add default meta information
platforms = lib.platforms.all;
} // meta // {
# add an extra maintainer to every package
maintainers = (meta.maintainers or []) ++
[ lib.maintainers.ehmry lib.maintainers.lethalman ];
};
})