config.nix

{
  packageOverrides = pkgs: rec {
    haskellPackages = with pkgs.haskellPackages; pkgs.haskellPackages // rec {
      monadLogger = callPackage ./haskell/monad-logger.nix {};
      monadControl_0_3_x = callPackage ./haskell/monad-control-0.3.3.1.nix {};
      transformers = callPackage ./haskell/transformers.nix {};
    };
  };
}

default.nix

# This file was auto-generated by cabal2nix. Please do NOT edit manually!

{ cabal, aeson, classyPrelude, classyPreludeConduit
, classyPreludeYesod, conduit, dataDefault, fastLogger, fileEmbed
, hjsmin, hspec, httpConduit, monadControl_0_3_x, monadLogger, persistent
, persistentSqlite, persistentTemplate, resourcet, safe
, shakespeare, text, time, transformers, unorderedContainers
, vector, waiExtra, waiLogger, warp, yaml, yesod, yesodAuth
, yesodCore, yesodForm, yesodStatic, yesodTest
, yesodBin
}:

cabal.mkDerivation (self: {
  pname = "haverer-api";
  version = "0.0.0";
  src = ./.;
  isLibrary = true;
  isExecutable = true;
  buildDepends = [
    aeson classyPrelude classyPreludeConduit classyPreludeYesod conduit
    dataDefault fastLogger fileEmbed hjsmin httpConduit monadControl_0_3_x
    monadLogger persistent persistentSqlite persistentTemplate safe
    shakespeare text time unorderedContainers vector waiExtra waiLogger
    warp yaml yesod yesodAuth yesodCore yesodForm yesodStatic yesodBin
  ];
  testDepends = [
    classyPrelude classyPreludeYesod hspec monadLogger persistent
    persistentSqlite resourcet transformers yesod yesodCore yesodTest
  ];
  meta = {
    platforms = self.ghc.meta.platforms;
  };
})

invocation

nix-shell-haskell ()
{
    nix-shell -E '(import <nixpkgs> {}).haskellPackages.callPackage ./default.nix {}' "$@"
}

$ nix-shell-haskell
error: anonymous function at "/Users/jml/src/haverer-api/default.nix":3:1 called without required argument ‘monadControl_0_3_x’, at "/Users/jml/nixpkgs/lib/customisation.nix":58:12
j