{ stdenv, lib, fetchFromGitHub, ncurses
, portmidiSupport ? false, portmidi }:

stdenv.mkDerivation rec {
  name = "orca-${version}-unstable";
  version = "2019-02-09";

  src = fetchFromGitHub {
    owner = "hundredrabbits";
    repo = "Orca-c";
    rev = "32ca897ef95687a9787453b3d1fc3c80488bfa81";
    sha256 = "14fn9hlhb0nxfmslynd4knp3li6b981fbqag2n1m1jya8m5mcrwc";
  };

  buildInputs = [ ncurses ] ++ lib.optional enablePortmidi portmidi;

  buildPhase = ''
    runHook preBuild
    bash tool ${if enablePortmidi then "--portmidi" else ""} build release orca
    runHook postBuild
  '';

  installPhase = ''
    runHook preinstall
    mkdir -p "$out/bin"
    cp build/release/orca "$out/bin"
    runHook postInstall
  '';

  meta = with lib; {
    description = "Live programming environment (C port)";
    homepage = https://100r.co/pages/orca.html;
    license = licenses.mit;
    maintainers = with maintainers; [ qyliss ];
    platforms = platforms.all;
  };
}