haxe.nix

{ stdenv, fetchFromGitHub, coreutils, ocamlPackages, zlib, pcre, neko, mbedtls
  , ocaml-sha # put this into ocamlPackages
}:


stdenv.mkDerivation rec {
  pname = "haxe";
  version = "4.1.5";

  src = fetchFromGitHub {
    owner = "HaxeFoundation";
    repo = "haxe";
    rev = version;
    sha256 = "0rns6d28qzkbai6yyws08yzbyvxfn848nj0fsji7chdi0y7pzzj0";
    fetchSubmodules = true;
  };

  dontStrip = true;


  makeFlags = [
    "INSTALL_DIR=$(out)"
    "BRANCH=HEAD"
    "COMMIT_DATE=20201231082044"
    "COMMIT_SHA=5e33a78aa"
    "all"
    "tools"
  ];
  
  buildInputs = with ocamlPackages; [
    ocaml
    findlib
    camlp5
    dune_2
    xml-light
    sedlex_2
    ocaml_extlib
    ptmap
    ocaml-migrate-parsetree
    ppx_tools_versioned
    ocaml-sha
  ] ++ [
    zlib
    pcre
    neko
    mbedtls
  ];
}

ocaml-sha.nix

{ buildDunePackage, fetchFromGitHub }:

buildDunePackage rec {
  pname = "sha";
  version = "1.13";

  useDune2 = true;
  
  src = fetchFromGitHub {
    owner = "djs55";
    repo = "ocaml-sha";
    rev = "v${version}";
    sha256 = "0z1mrc4rvxvrgahxc4si6mcm5ap45fsxzmpdifylaxavdfcaqz1b";
  };

}

Thank you for this gist. Works perfectly for us at HSLuv: https://github.com/hsluv/hsluv