{ pkgs ? import <nixpkgs> {}
, ghc ? "ghc901"
, withHoogle ? false
}:
let
  haskellPackages =
    if ghc == null
    then pkgs.haskellPackages
    else pkgs.haskell.packages.${ghc};
  hs = haskellPackages.extend (with pkgs.haskell.lib; hself: hsuper:
    {
    }
  );
in hs.symantic-document // {
  shell = hs.shellFor {
    #doBenchmark = true;
    packages = p: [ p.symantic-document ];
    nativeBuildInputs = [
      hs.cabal-install
      #hs.ghc-events
      #hs.hs-speedscope
      #hs.profiteur
      #hs.eventlog2html
      hs.ghcid
      #hs.threadscope
      #hs.ghc-events-analyze
      #hs.haskell-language-server
      #hs.hpc
    ];
    buildInputs = [
      #hs.ghcid
      #pkgs.ormolu
      #pkgs.cabal2nix
      #hs.hlint
    ];
    inherit withHoogle;
  };
}