{ pkgs ? import <nixpkgs> {}
, ghc ? null # "ghc8102"
, withHoogle ? false
#, symantic-base ? null
}:
let
  haskellPackages =
    if ghc == null
    then pkgs.haskellPackages
    else pkgs.haskell.packages.${ghc};
  hs = haskellPackages.extend (with pkgs.haskell.lib;
    hself: hsuper: {
      symantic-base = hself.callCabal2nix "symantic-base" (pkgs.fetchgit {
        url = "git://git.sourcephile.fr/haskell/symantic-base";
        sha256 = "sha256-I636Kl+S93BDX1xrEMQdf217pLeT6FeF4BBpj83sEgQ=";
      }) {};
    } //
    packageSourceOverrides {
      symantic-parser = ./.;
    } hself hsuper
  );
in hs.symantic-parser // {
  shell = hs.shellFor {
    packages = p: [ p.symantic-parser ];
    nativeBuildInputs = [
      hs.cabal-install
      hs.haskell-language-server
    ];
    buildInputs = [
      #hs.ghcid
      #hs.ormolu
      hs.hlint
      #pkgs.nixpkgs-fmt
    ];
    inherit withHoogle;
  };
}