nixpkgs/pkgs/development/web/nodejs/build-node-package.nix

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{ stdenv, nodejs }:
args @ { src, deps, ... }:
stdenv.mkDerivation ({
unpackPhase = "true";
configurePhase = ''
runHook preConfigure
mkdir node_modules
${stdenv.lib.concatStrings (map (dep: ''
ln -sv ${dep}/node_modules/${(builtins.parseDrvName dep.name).name} node_modules/
'') deps)}
export HOME=$(pwd)
runHook postConfigure
'';
buildPhase = ''
runHook preBuild
${nodejs}/bin/npm --registry http://www.example.com install ${src}
runHook postBuild
'';
installPhase = ''
runHook preInstall
mkdir $out
mv node_modules $out
if [ -d "$out/node_modules/.bin" ]; then
ln -sv node_modules/.bin $out/bin
find -L $out/node_modules/.bin/* -type f -print0 | \
xargs -0 sed --follow-symlinks -i 's@#!/usr/bin/env node@#!${nodejs}/bin/node@'
fi
runHook postInstall
'';
preFixup = ''
find $out -type f -print0 | xargs -0 sed -i 's|${src}|${src.name}|g'
'';
} // args)