default.nix

let
  bootstrap = import <nixpkgs> { };
  nixpkgs = builtins.fromJSON (builtins.readFile ./nixpkgs.json);
  src = bootstrap.fetchFromGitHub {
    owner = "NixOS";
    repo = "nixpkgs";
    inherit (nixpkgs) rev sha256;
  };
  pkgs = import src { };
  drv = { mkDerivation, base, stdenv }:
    mkDerivation {
      pname = "test";
      version = "1.0.0";
      src = ./.;
      isLibrary = false;
      isExecutable = true;
      executableSystemDepends = [ pkgs.pkgsMusl.libffi pkgs.pkgsMusl.gmp ];
      executableHaskellDepends = [ base ];
      homepage = "https://notabug.org/koz.ross/test";
      description = "Messing with musl and Nix";
      license = stdenv.lib.licenses.gpl3Plus;
    };
in pkgs.pkgsMusl.haskellPackages.callPackage drv { }