A Nix expression to build and install orca-c on NixOS

orca.nix

# nix-build -E 'with import <nixpkgs> {}; callPackage ./orca.nix {}'

{ stdenv, ncurses, portmidi }:

stdenv.mkDerivation rec {
  name = "orca";
  src = ./.;

  buildInputs = [ ncurses portmidi ];
  enableParallelBuilding = true;

  buildPhase = ''
    patchShebangs ./tool
    make
  '';

  installPhase = ''
    mkdir -p $out/bin
    cp build/orca $out/bin/orca
  '';
}