metals: use fixed-point mkDerivation (#399829)

  setJavaClassPath,

}:

stdenv.mkDerivation rec {

stdenv.mkDerivation (finalAttrs: {

  pname = "metals";

  version = "1.5.2";

  deps = stdenv.mkDerivation {

    name = "${pname}-deps-${version}";

    name = "metals-deps-${finalAttrs.version}";

    buildCommand = ''

      export COURSIER_CACHE=$(pwd)

      ${coursier}/bin/cs fetch org.scalameta:metals_2.13:${version} \

      ${coursier}/bin/cs fetch org.scalameta:metals_2.13:${finalAttrs.version} \

        -r bintray:scalacenter/releases \

        -r sonatype:snapshots > deps

      mkdir -p $out/share/java

    makeWrapper

    setJavaClassPath

  ];

  buildInputs = [ deps ];

  buildInputs = [ finalAttrs.deps ];

  dontUnpack = true;

    mkdir -p $out/bin

    makeWrapper ${jre}/bin/java $out/bin/metals \

      --add-flags "${extraJavaOpts} -cp $CLASSPATH scala.meta.metals.Main"

      --add-flags "${finalAttrs.extraJavaOpts} -cp $CLASSPATH scala.meta.metals.Main"

  '';

  meta = with lib; {

      tomahna

    ];

  };

}

})