{ stdenv, lib, coursier, jdk, jre, makeWrapper }: stdenv.mkDerivation rec { pname = "metals"; version = "0.10.3"; deps = stdenv.mkDerivation { name = "${pname}-deps-${version}"; buildCommand = '' export COURSIER_CACHE=$(pwd) ${coursier}/bin/coursier fetch org.scalameta:metals_2.12:${version} \ -r bintray:scalacenter/releases \ -r sonatype:snapshots > deps mkdir -p $out/share/java cp -n $(< deps) $out/share/java/ ''; outputHashMode = "recursive"; outputHashAlgo = "sha256"; outputHash = "1psmsiwd3xlbrvkdvr2zgs2b66kw8w2jvvqa399g7jhixh2fpbx4"; }; nativeBuildInputs = [ makeWrapper ]; buildInputs = [ jdk deps ]; phases = [ "installPhase" ]; extraJavaOpts = "-XX:+UseG1GC -XX:+UseStringDeduplication -Xss4m -Xms100m"; installPhase = '' mkdir -p $out/bin # This variant is not targeted at any particular client, clients are # expected to declare their supported features in initialization options. makeWrapper ${jre}/bin/java $out/bin/metals \ --prefix PATH : ${lib.makeBinPath [ jdk ]} \ --add-flags "${extraJavaOpts} -cp $CLASSPATH scala.meta.metals.Main" # Further variants targeted at clients with featuresets pre-set. makeWrapper ${jre}/bin/java $out/bin/metals-emacs \ --prefix PATH : ${lib.makeBinPath [ jdk ]} \ --add-flags "${extraJavaOpts} -Dmetals.client=emacs -cp $CLASSPATH scala.meta.metals.Main" makeWrapper ${jre}/bin/java $out/bin/metals-vim \ --prefix PATH : ${lib.makeBinPath [ jdk ]} \ --add-flags "${extraJavaOpts} -Dmetals.client=coc.nvim -cp $CLASSPATH scala.meta.metals.Main" makeWrapper ${jre}/bin/java $out/bin/metals-vim-lsc \ --prefix PATH : ${lib.makeBinPath [ jdk ]} \ --add-flags "${extraJavaOpts} -Dmetals.client=vim-lsc -cp $CLASSPATH scala.meta.metals.Main" makeWrapper ${jre}/bin/java $out/bin/metals-sublime \ --prefix PATH : ${lib.makeBinPath [ jdk ]} \ --add-flags "${extraJavaOpts} -Dmetals.client=sublime -cp $CLASSPATH scala.meta.metals.Main" ''; meta = with lib; { homepage = "https://scalameta.org/metals/"; license = licenses.asl20; description = "Work-in-progress language server for Scala"; maintainers = with maintainers; [ ceedubs tomahna ]; }; }