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{ go, govers, parallel, lib, fetchgit, fetchhg, fetchbzr, rsync
, removeReferencesTo, fetchFromGitHub }:
{ 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 ? [ ]
# Extra gopaths containing src subfolder
# with sources to include in the gopath
, extraSrcPaths ? [ ]
# go2nix dependency file
, goDeps ? null
, 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
with builtins;
let
args = lib.filterAttrs (name: _: name != "extraSrcs") args';
removeReferences = [ ] ++ lib.optional (!allowGoReference) go;
removeExpr = refs: ''remove-references-to ${lib.concatMapStrings (ref: " -t ${ref}") refs}'';
dep2src = goDep:
{
inherit (goDep) goPackagePath;
src = if goDep.fetch.type == "git" then
fetchgit {
inherit (goDep.fetch) url rev sha256;
}
else if goDep.fetch.type == "hg" then
fetchhg {
inherit (goDep.fetch) url rev sha256;
}
else if goDep.fetch.type == "bzr" then
fetchbzr {
inherit (goDep.fetch) url rev sha256;
}
else if goDep.fetch.type == "FromGitHub" then
fetchFromGitHub {
inherit (goDep.fetch) owner repo rev sha256;
}
else abort "Unrecognized package fetch type: ${goDep.fetch.type}";
};
importGodeps = { depsFile }:
map dep2src (import depsFile);
goPath = if goDeps != null then importGodeps { depsFile = goDeps; } ++ extraSrcs
else extraSrcs;
in
go.stdenv.mkDerivation (
(builtins.removeAttrs args [ "goPackageAliases" "disabled" ]) // {
inherit name;
nativeBuildInputs = [ removeReferencesTo go parallel ]
++ (lib.optional (!dontRenameImports) govers) ++ nativeBuildInputs;
buildInputs = [ go ] ++ buildInputs;
configurePhase = args.configurePhase or ''
runHook preConfigure
# Extract the source
cd "$NIX_BUILD_TOP"
mkdir -p "go/src/$(dirname "$goPackagePath")"
mv "$sourceRoot" "go/src/$goPackagePath"
'' + lib.flip lib.concatMapStrings goPath ({ src, goPackagePath }: ''
mkdir goPath
(cd goPath; unpackFile "${src}")
mkdir -p "go/src/$(dirname "${goPackagePath}")"
chmod -R u+w goPath/*
mv goPath/* "go/src/${goPackagePath}"
rmdir goPath
'') + (lib.optionalString (extraSrcPaths != []) ''
${rsync}/bin/rsync -a ${lib.concatMapStrings (p: "${p}/src") extraSrcPaths} go
'') + ''
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"
. $TMPDIR/buildFlagsArray
echo "$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 -qE '(no( buildable| non-test)?|build constraints exclude all) 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$goPackagePath/,g"
else
pushd "$NIX_BUILD_TOP/go/src" >/dev/null
find "$goPackagePath" -type f -name \*$type.go -exec dirname {} \; | grep -v "/vendor/" | sort | uniq
popd >/dev/null
fi
}
if [ ''${#buildFlagsArray[@]} -ne 0 ]; then
declare -p buildFlagsArray > $TMPDIR/buildFlagsArray
else
touch $TMPDIR/buildFlagsArray
fi
export -f buildGoDir # parallel needs to see the function
if [ -z "$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 + ''
find $bin/bin -type f -exec ${removeExpr removeReferences} '{}' + || true
'';
shellHook = ''
d=$(mktemp -d "--suffix=-$name")
'' + toString (map (dep: ''
mkdir -p "$d/src/$(dirname "${dep.goPackagePath}")"
ln -s "${dep.src}" "$d/src/${dep.goPackagePath}"
''
) goPath) + ''
export GOPATH=${lib.concatStringsSep ":" ( ["$d"] ++ ["$GOPATH"] ++ ["$PWD"] ++ extraSrcPaths)}
'';
disallowedReferences = lib.optional (!allowGoReference) go
++ lib.optional (!dontRenameImports) govers;
passthru = passthru //
{ inherit go; } //
lib.optionalAttrs (goPackageAliases != []) { inherit goPackageAliases; };
enableParallelBuilding = enableParallelBuilding;
# I prefer to call this dev but propagatedBuildInputs expects $out to exist
outputs = args.outputs or [ "bin" "out" ];
meta = {
# Add default meta information
homepage = "https://${goPackagePath}";
platforms = go.meta.platforms or lib.platforms.all;
} // meta // {
# add an extra maintainer to every package
maintainers = (meta.maintainers or []) ++
[ lib.maintainers.ehmry lib.maintainers.lethalman ];
};
})
|