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path: root/pkgs/development/tools/build-managers/bloop/default.nix
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{ stdenv, lib, fetchurl, coursier, jdk, jre, python, makeWrapper }:

let
  baseName = "bloop";
  version = "1.2.5";
  deps = stdenv.mkDerivation {
    name = "${baseName}-deps-${version}";
    buildCommand = ''
      export COURSIER_CACHE=$(pwd)
      ${coursier}/bin/coursier fetch ch.epfl.scala:bloop-frontend_2.12:${version} \
        -r "bintray:scalameta/maven" \
        -r "bintray:scalacenter/releases" \
        -r "https://oss.sonatype.org/content/repositories/staging" > deps
      mkdir -p $out/share/java
      cp $(< deps) $out/share/java/
    '';
    outputHashMode = "recursive";
    outputHashAlgo = "sha256";
    outputHash     = "19373fyb0g7irrdzb1vsjmyv5xj84qwbcfb6lm076px7wfyn0w1c";
  };
in
stdenv.mkDerivation rec {
  name = "${baseName}-${version}";

  # Fetched from https://github.com/scalacenter/bloop/releases/download/v${version}/install.py
  nailgunCommit = "0c325237";

  buildInputs = [ jdk makeWrapper deps ];

  phases = [ "installPhase" ];

  client = fetchurl {
    url = "https://raw.githubusercontent.com/scalacenter/nailgun/${nailgunCommit}/pynailgun/ng.py";
    sha256 = "0qjw4nsyb4cxg96jj1yv5c0ivcxvmscxxqfzll5w9p1pjb30bq0n";
  };

  zshCompletion = fetchurl {
    url = "https://raw.githubusercontent.com/scalacenter/bloop/v${version}/etc/zsh/_bloop";
    sha256 = "1id6f1fgy2rk0q5aad6ffivhbxa94fallzsc04l9n0y1s2xdhqpm";
  };

  installPhase = ''
    mkdir -p $out/bin
    mkdir -p $out/share/zsh/site-functions

    cp ${client} $out/bin/blp-client
    cp ${zshCompletion} $out/share/zsh/site-functions/_bloop
    chmod +x $out/bin/blp-client

    makeWrapper ${jre}/bin/java $out/bin/blp-server \
      --prefix PATH : ${lib.makeBinPath [ jdk ]} \
      --add-flags "-cp $CLASSPATH bloop.Server"
    makeWrapper $out/bin/blp-client $out/bin/bloop \
      --prefix PATH : ${lib.makeBinPath [ python ]}
  '';

  meta = with stdenv.lib; {
    homepage = https://scalacenter.github.io/bloop/;
    license = licenses.asl20;
    description = "Bloop is a Scala build server and command-line tool to make the compile and test developer workflows fast and productive in a build-tool-agnostic way.";
    maintainers = with maintainers; [ tomahna ];
  };
}