589 lines
20 KiB
Nix
589 lines
20 KiB
Nix
# This file originates from node2nix
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{lib, stdenv, nodejs, python2, pkgs, libtool, runCommand, writeTextFile, writeShellScript}:
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let
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# Workaround to cope with utillinux in Nixpkgs 20.09 and util-linux in Nixpkgs master
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utillinux = if pkgs ? utillinux then pkgs.utillinux else pkgs.util-linux;
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python = if nodejs ? python then nodejs.python else python2;
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# Create a tar wrapper that filters all the 'Ignoring unknown extended header keyword' noise
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tarWrapper = runCommand "tarWrapper" {} ''
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mkdir -p $out/bin
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cat > $out/bin/tar <<EOF
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#! ${stdenv.shell} -e
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$(type -p tar) "\$@" --warning=no-unknown-keyword --delay-directory-restore
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EOF
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chmod +x $out/bin/tar
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'';
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# Function that generates a TGZ file from a NPM project
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buildNodeSourceDist =
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{ name, version, src, ... }:
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stdenv.mkDerivation {
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name = "node-tarball-${name}-${version}";
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inherit src;
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buildInputs = [ nodejs ];
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buildPhase = ''
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export HOME=$TMPDIR
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tgzFile=$(npm pack | tail -n 1) # Hooks to the pack command will add output (https://docs.npmjs.com/misc/scripts)
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'';
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installPhase = ''
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mkdir -p $out/tarballs
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mv $tgzFile $out/tarballs
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mkdir -p $out/nix-support
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echo "file source-dist $out/tarballs/$tgzFile" >> $out/nix-support/hydra-build-products
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'';
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};
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# Common shell logic
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installPackage = writeShellScript "install-package" ''
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installPackage() {
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local packageName=$1 src=$2
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local strippedName
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local DIR=$PWD
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cd $TMPDIR
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unpackFile $src
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# Make the base dir in which the target dependency resides first
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mkdir -p "$(dirname "$DIR/$packageName")"
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if [ -f "$src" ]
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then
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# Figure out what directory has been unpacked
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packageDir="$(find . -maxdepth 1 -type d | tail -1)"
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# Restore write permissions to make building work
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find "$packageDir" -type d -exec chmod u+x {} \;
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chmod -R u+w "$packageDir"
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# Move the extracted tarball into the output folder
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mv "$packageDir" "$DIR/$packageName"
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elif [ -d "$src" ]
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then
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# Get a stripped name (without hash) of the source directory.
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# On old nixpkgs it's already set internally.
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if [ -z "$strippedName" ]
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then
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strippedName="$(stripHash $src)"
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fi
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# Restore write permissions to make building work
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chmod -R u+w "$strippedName"
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# Move the extracted directory into the output folder
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mv "$strippedName" "$DIR/$packageName"
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fi
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# Change to the package directory to install dependencies
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cd "$DIR/$packageName"
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}
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'';
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# Bundle the dependencies of the package
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#
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# Only include dependencies if they don't exist. They may also be bundled in the package.
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includeDependencies = {dependencies}:
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lib.optionalString (dependencies != []) (
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''
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mkdir -p node_modules
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cd node_modules
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''
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+ (lib.concatMapStrings (dependency:
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''
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if [ ! -e "${dependency.name}" ]; then
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${composePackage dependency}
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fi
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''
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) dependencies)
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+ ''
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cd ..
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''
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);
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# Recursively composes the dependencies of a package
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composePackage = { name, packageName, src, dependencies ? [], ... }@args:
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builtins.addErrorContext "while evaluating node package '${packageName}'" ''
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installPackage "${packageName}" "${src}"
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${includeDependencies { inherit dependencies; }}
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cd ..
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${lib.optionalString (builtins.substring 0 1 packageName == "@") "cd .."}
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'';
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pinpointDependencies = {dependencies, production}:
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let
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pinpointDependenciesFromPackageJSON = writeTextFile {
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name = "pinpointDependencies.js";
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text = ''
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var fs = require('fs');
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var path = require('path');
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function resolveDependencyVersion(location, name) {
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if(location == process.env['NIX_STORE']) {
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return null;
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} else {
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var dependencyPackageJSON = path.join(location, "node_modules", name, "package.json");
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if(fs.existsSync(dependencyPackageJSON)) {
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var dependencyPackageObj = JSON.parse(fs.readFileSync(dependencyPackageJSON));
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if(dependencyPackageObj.name == name) {
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return dependencyPackageObj.version;
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}
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} else {
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return resolveDependencyVersion(path.resolve(location, ".."), name);
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}
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}
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}
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function replaceDependencies(dependencies) {
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if(typeof dependencies == "object" && dependencies !== null) {
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for(var dependency in dependencies) {
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var resolvedVersion = resolveDependencyVersion(process.cwd(), dependency);
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if(resolvedVersion === null) {
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process.stderr.write("WARNING: cannot pinpoint dependency: "+dependency+", context: "+process.cwd()+"\n");
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} else {
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dependencies[dependency] = resolvedVersion;
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}
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}
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}
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}
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/* Read the package.json configuration */
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var packageObj = JSON.parse(fs.readFileSync('./package.json'));
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/* Pinpoint all dependencies */
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replaceDependencies(packageObj.dependencies);
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if(process.argv[2] == "development") {
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replaceDependencies(packageObj.devDependencies);
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}
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replaceDependencies(packageObj.optionalDependencies);
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/* Write the fixed package.json file */
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fs.writeFileSync("package.json", JSON.stringify(packageObj, null, 2));
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'';
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};
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in
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''
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node ${pinpointDependenciesFromPackageJSON} ${if production then "production" else "development"}
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${lib.optionalString (dependencies != [])
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''
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if [ -d node_modules ]
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then
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cd node_modules
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${lib.concatMapStrings (dependency: pinpointDependenciesOfPackage dependency) dependencies}
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cd ..
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fi
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''}
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'';
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# Recursively traverses all dependencies of a package and pinpoints all
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# dependencies in the package.json file to the versions that are actually
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# being used.
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pinpointDependenciesOfPackage = { packageName, dependencies ? [], production ? true, ... }@args:
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''
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if [ -d "${packageName}" ]
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then
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cd "${packageName}"
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${pinpointDependencies { inherit dependencies production; }}
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cd ..
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${lib.optionalString (builtins.substring 0 1 packageName == "@") "cd .."}
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fi
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'';
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# Extract the Node.js source code which is used to compile packages with
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# native bindings
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nodeSources = runCommand "node-sources" {} ''
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tar --no-same-owner --no-same-permissions -xf ${nodejs.src}
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mv node-* $out
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'';
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# Script that adds _integrity fields to all package.json files to prevent NPM from consulting the cache (that is empty)
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addIntegrityFieldsScript = writeTextFile {
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name = "addintegrityfields.js";
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text = ''
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var fs = require('fs');
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var path = require('path');
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function augmentDependencies(baseDir, dependencies) {
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for(var dependencyName in dependencies) {
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var dependency = dependencies[dependencyName];
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// Open package.json and augment metadata fields
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var packageJSONDir = path.join(baseDir, "node_modules", dependencyName);
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var packageJSONPath = path.join(packageJSONDir, "package.json");
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if(fs.existsSync(packageJSONPath)) { // Only augment packages that exist. Sometimes we may have production installs in which development dependencies can be ignored
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console.log("Adding metadata fields to: "+packageJSONPath);
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var packageObj = JSON.parse(fs.readFileSync(packageJSONPath));
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if(dependency.integrity) {
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packageObj["_integrity"] = dependency.integrity;
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} else {
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packageObj["_integrity"] = "sha1-000000000000000000000000000="; // When no _integrity string has been provided (e.g. by Git dependencies), add a dummy one. It does not seem to harm and it bypasses downloads.
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}
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if(dependency.resolved) {
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packageObj["_resolved"] = dependency.resolved; // Adopt the resolved property if one has been provided
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} else {
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packageObj["_resolved"] = dependency.version; // Set the resolved version to the version identifier. This prevents NPM from cloning Git repositories.
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}
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if(dependency.from !== undefined) { // Adopt from property if one has been provided
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packageObj["_from"] = dependency.from;
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}
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fs.writeFileSync(packageJSONPath, JSON.stringify(packageObj, null, 2));
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}
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// Augment transitive dependencies
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if(dependency.dependencies !== undefined) {
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augmentDependencies(packageJSONDir, dependency.dependencies);
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}
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}
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}
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if(fs.existsSync("./package-lock.json")) {
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var packageLock = JSON.parse(fs.readFileSync("./package-lock.json"));
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if(![1, 2].includes(packageLock.lockfileVersion)) {
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process.stderr.write("Sorry, I only understand lock file versions 1 and 2!\n");
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process.exit(1);
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}
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if(packageLock.dependencies !== undefined) {
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augmentDependencies(".", packageLock.dependencies);
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}
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}
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'';
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};
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# Reconstructs a package-lock file from the node_modules/ folder structure and package.json files with dummy sha1 hashes
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reconstructPackageLock = writeTextFile {
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name = "addintegrityfields.js";
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text = ''
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var fs = require('fs');
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var path = require('path');
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var packageObj = JSON.parse(fs.readFileSync("package.json"));
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var lockObj = {
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name: packageObj.name,
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version: packageObj.version,
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lockfileVersion: 1,
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requires: true,
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dependencies: {}
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};
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function augmentPackageJSON(filePath, dependencies) {
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var packageJSON = path.join(filePath, "package.json");
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if(fs.existsSync(packageJSON)) {
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var packageObj = JSON.parse(fs.readFileSync(packageJSON));
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dependencies[packageObj.name] = {
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version: packageObj.version,
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integrity: "sha1-000000000000000000000000000=",
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dependencies: {}
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};
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processDependencies(path.join(filePath, "node_modules"), dependencies[packageObj.name].dependencies);
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}
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}
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function processDependencies(dir, dependencies) {
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if(fs.existsSync(dir)) {
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var files = fs.readdirSync(dir);
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files.forEach(function(entry) {
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var filePath = path.join(dir, entry);
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var stats = fs.statSync(filePath);
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if(stats.isDirectory()) {
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if(entry.substr(0, 1) == "@") {
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// When we encounter a namespace folder, augment all packages belonging to the scope
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var pkgFiles = fs.readdirSync(filePath);
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pkgFiles.forEach(function(entry) {
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if(stats.isDirectory()) {
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var pkgFilePath = path.join(filePath, entry);
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augmentPackageJSON(pkgFilePath, dependencies);
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}
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});
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} else {
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augmentPackageJSON(filePath, dependencies);
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}
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}
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});
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}
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}
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processDependencies("node_modules", lockObj.dependencies);
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fs.writeFileSync("package-lock.json", JSON.stringify(lockObj, null, 2));
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'';
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};
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prepareAndInvokeNPM = {packageName, bypassCache, reconstructLock, npmFlags, production}:
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let
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forceOfflineFlag = if bypassCache then "--offline" else "--registry http://www.example.com";
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in
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''
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# Pinpoint the versions of all dependencies to the ones that are actually being used
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echo "pinpointing versions of dependencies..."
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source $pinpointDependenciesScriptPath
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# Patch the shebangs of the bundled modules to prevent them from
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# calling executables outside the Nix store as much as possible
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patchShebangs .
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# Deploy the Node.js package by running npm install. Since the
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# dependencies have been provided already by ourselves, it should not
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# attempt to install them again, which is good, because we want to make
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# it Nix's responsibility. If it needs to install any dependencies
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# anyway (e.g. because the dependency parameters are
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# incomplete/incorrect), it fails.
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#
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# The other responsibilities of NPM are kept -- version checks, build
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# steps, postprocessing etc.
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export HOME=$TMPDIR
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cd "${packageName}"
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runHook preRebuild
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${lib.optionalString bypassCache ''
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${lib.optionalString reconstructLock ''
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if [ -f package-lock.json ]
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then
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echo "WARNING: Reconstruct lock option enabled, but a lock file already exists!"
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echo "This will most likely result in version mismatches! We will remove the lock file and regenerate it!"
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rm package-lock.json
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else
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echo "No package-lock.json file found, reconstructing..."
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fi
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node ${reconstructPackageLock}
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''}
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node ${addIntegrityFieldsScript}
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''}
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npm ${forceOfflineFlag} --nodedir=${nodeSources} ${npmFlags} ${lib.optionalString production "--production"} rebuild
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if [ "''${dontNpmInstall-}" != "1" ]
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then
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# NPM tries to download packages even when they already exist if npm-shrinkwrap is used.
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rm -f npm-shrinkwrap.json
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npm ${forceOfflineFlag} --nodedir=${nodeSources} ${npmFlags} ${lib.optionalString production "--production"} install
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fi
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'';
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# Builds and composes an NPM package including all its dependencies
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buildNodePackage =
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{ name
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, packageName
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, version
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, dependencies ? []
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, buildInputs ? []
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, production ? true
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, npmFlags ? ""
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, dontNpmInstall ? false
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, bypassCache ? false
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, reconstructLock ? false
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, preRebuild ? ""
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, dontStrip ? true
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, unpackPhase ? "true"
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, buildPhase ? "true"
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, meta ? {}
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, ... }@args:
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let
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extraArgs = removeAttrs args [ "name" "dependencies" "buildInputs" "dontStrip" "dontNpmInstall" "preRebuild" "unpackPhase" "buildPhase" "meta" ];
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in
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stdenv.mkDerivation ({
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name = "${name}-${version}";
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buildInputs = [ tarWrapper python nodejs ]
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++ lib.optional (stdenv.isLinux) utillinux
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++ lib.optional (stdenv.isDarwin) libtool
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++ buildInputs;
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inherit nodejs;
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inherit dontStrip; # Stripping may fail a build for some package deployments
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inherit dontNpmInstall preRebuild unpackPhase buildPhase;
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compositionScript = composePackage args;
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pinpointDependenciesScript = pinpointDependenciesOfPackage args;
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passAsFile = [ "compositionScript" "pinpointDependenciesScript" ];
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installPhase = ''
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source ${installPackage}
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# Create and enter a root node_modules/ folder
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mkdir -p $out/lib/node_modules
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cd $out/lib/node_modules
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# Compose the package and all its dependencies
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source $compositionScriptPath
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${prepareAndInvokeNPM { inherit packageName bypassCache reconstructLock npmFlags production; }}
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# Create symlink to the deployed executable folder, if applicable
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if [ -d "$out/lib/node_modules/.bin" ]
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then
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ln -s $out/lib/node_modules/.bin $out/bin
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fi
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# Create symlinks to the deployed manual page folders, if applicable
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if [ -d "$out/lib/node_modules/${packageName}/man" ]
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then
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mkdir -p $out/share
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for dir in "$out/lib/node_modules/${packageName}/man/"*
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do
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mkdir -p $out/share/man/$(basename "$dir")
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for page in "$dir"/*
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do
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ln -s $page $out/share/man/$(basename "$dir")
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done
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done
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fi
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# Run post install hook, if provided
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runHook postInstall
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'';
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meta = {
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# default to Node.js' platforms
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platforms = nodejs.meta.platforms;
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} // meta;
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} // extraArgs);
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# Builds a node environment (a node_modules folder and a set of binaries)
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buildNodeDependencies =
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{ name
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, packageName
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, version
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, src
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, dependencies ? []
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, buildInputs ? []
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, production ? true
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, npmFlags ? ""
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, dontNpmInstall ? false
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, bypassCache ? false
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, reconstructLock ? false
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, dontStrip ? true
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, unpackPhase ? "true"
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, buildPhase ? "true"
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, ... }@args:
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let
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extraArgs = removeAttrs args [ "name" "dependencies" "buildInputs" ];
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in
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stdenv.mkDerivation ({
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name = "node-dependencies-${name}-${version}";
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buildInputs = [ tarWrapper python nodejs ]
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++ lib.optional (stdenv.isLinux) utillinux
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++ lib.optional (stdenv.isDarwin) libtool
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++ buildInputs;
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inherit dontStrip; # Stripping may fail a build for some package deployments
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inherit dontNpmInstall unpackPhase buildPhase;
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includeScript = includeDependencies { inherit dependencies; };
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pinpointDependenciesScript = pinpointDependenciesOfPackage args;
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passAsFile = [ "includeScript" "pinpointDependenciesScript" ];
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installPhase = ''
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source ${installPackage}
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mkdir -p $out/${packageName}
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cd $out/${packageName}
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source $includeScriptPath
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# Create fake package.json to make the npm commands work properly
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cp ${src}/package.json .
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chmod 644 package.json
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${lib.optionalString bypassCache ''
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if [ -f ${src}/package-lock.json ]
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then
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cp ${src}/package-lock.json .
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fi
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''}
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# Go to the parent folder to make sure that all packages are pinpointed
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cd ..
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${lib.optionalString (builtins.substring 0 1 packageName == "@") "cd .."}
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${prepareAndInvokeNPM { inherit packageName bypassCache reconstructLock npmFlags production; }}
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# Expose the executables that were installed
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cd ..
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${lib.optionalString (builtins.substring 0 1 packageName == "@") "cd .."}
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mv ${packageName} lib
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ln -s $out/lib/node_modules/.bin $out/bin
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'';
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} // extraArgs);
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|
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# Builds a development shell
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buildNodeShell =
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{ name
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, packageName
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, version
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, src
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, dependencies ? []
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, buildInputs ? []
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, production ? true
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, npmFlags ? ""
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, dontNpmInstall ? false
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, bypassCache ? false
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, reconstructLock ? false
|
|
, dontStrip ? true
|
|
, unpackPhase ? "true"
|
|
, buildPhase ? "true"
|
|
, ... }@args:
|
|
|
|
let
|
|
nodeDependencies = buildNodeDependencies args;
|
|
in
|
|
stdenv.mkDerivation {
|
|
name = "node-shell-${name}-${version}";
|
|
|
|
buildInputs = [ python nodejs ] ++ lib.optional (stdenv.isLinux) utillinux ++ buildInputs;
|
|
buildCommand = ''
|
|
mkdir -p $out/bin
|
|
cat > $out/bin/shell <<EOF
|
|
#! ${stdenv.shell} -e
|
|
$shellHook
|
|
exec ${stdenv.shell}
|
|
EOF
|
|
chmod +x $out/bin/shell
|
|
'';
|
|
|
|
# Provide the dependencies in a development shell through the NODE_PATH environment variable
|
|
inherit nodeDependencies;
|
|
shellHook = lib.optionalString (dependencies != []) ''
|
|
export NODE_PATH=${nodeDependencies}/lib/node_modules
|
|
export PATH="${nodeDependencies}/bin:$PATH"
|
|
'';
|
|
};
|
|
in
|
|
{
|
|
buildNodeSourceDist = lib.makeOverridable buildNodeSourceDist;
|
|
buildNodePackage = lib.makeOverridable buildNodePackage;
|
|
buildNodeDependencies = lib.makeOverridable buildNodeDependencies;
|
|
buildNodeShell = lib.makeOverridable buildNodeShell;
|
|
}
|