{ stdenv
, ghc
}:
stdenv.mkDerivation {
  name = "latexfmt";

  src = ./.;

  nativeBuildInputs = [ (ghc.withPackages (x: [ x.attoparsec ])) ];

  buildPhase = ''
    ghc -O -o latexfmt latexfmt.hs
  '';

  installPhase = ''
    install -Dm 755 ./latexfmt $out/bin/latexfmt
  '';
}