diff --git a/shell.nix b/shell.nix
index 9185afd..cc7d5f8 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,102 +1,14 @@
-{ nixpkgs ? import <nixpkgs> {}, compiler ? "default", doBenchmark ? false }:
+{ pkgs ? import <nixpkgs> {}}:
 
 let
-
-  inherit (nixpkgs) pkgs;
-
-  affection = with haskellPackages; callPackage(
-    { mkDerivation, base, bytestring, clock, containers, glib, linear
-    , monad-loops, monad-parallel, mtl, OpenGL, sdl2, stdenv, stm, text
-    , uuid, vector
-    }:
-    mkDerivation {
-      pname = "affection";
-      version = "0.0.0.10";
-      src = ../affection;
-      isLibrary = true;
-      isExecutable = true;
-      libraryHaskellDepends = [
-        base bytestring clock containers glib linear monad-loops
-        monad-parallel mtl OpenGL sdl2 stm text uuid vector
-      ];
-      homepage = "https://github.com/nek0/affection#readme";
-      description = "A simple Game Engine using SDL";
-      license = stdenv.lib.licenses.lgpl3;
-      doHaddock = false;
-    }) {};
-
-  algebraic-graphs = with haskellPackages; callPackage(
-    { mkDerivation, array, base, containers, deepseq, extra
-    , inspection-testing, mtl, QuickCheck, stdenv, transformers
-    }:
-    mkDerivation {
-      pname = "algebraic-graphs";
-      version = "0.5";
-      sha256 = "89b9fecf8245476ec823355125fcb95decf41fd9784e807d7bd0d09f0a79c50b";
-      libraryHaskellDepends = [
-        array base containers deepseq mtl transformers
-      ];
-      testHaskellDepends = [
-        array base containers deepseq extra inspection-testing mtl
-        QuickCheck transformers
-      ];
-      homepage = "https://github.com/snowleopard/alga";
-      description = "A library for algebraic graph construction and transformation";
-      license = stdenv.lib.licenses.mit;
-    }
-  ) {};
-
-  nanovg = with haskellPackages; callPackage(
-    { mkDerivation, base, bytestring, c2hs, containers, glew
-    , hspec, inline-c, libGL, libGLU, QuickCheck, stdenv, text, vector
-    }:
-    mkDerivation {
-      pname = "nanovg";
-      version = "0.6.0.0";
-      sha256 = "e35a2772f2a2e71916013cab70eeb8eedd6f66b5490ddf7ce237c8c76895d496";
-      revision = "1";
-      editedCabalFile = "1lhfsq50r9bdby7mfscw8ih3wsz2m19lr2a2z9b6diaf5kz76vij";
-      configureFlags = [ "-fgl3" ];
-      isLibrary = true;
-      isExecutable = true;
-      libraryHaskellDepends = [ base bytestring containers text vector ];
-      librarySystemDepends = [ glew libGL libGLU pkgs.xorg.libX11 ];
-      libraryPkgconfigDepends = [ glew ];
-      libraryToolDepends = [ c2hs ];
-      testHaskellDepends = [ base containers hspec inline-c QuickCheck ];
-      homepage = "https://github.com/cocreature/nanovg-hs";
-      description = "Haskell bindings for nanovg";
-      license = stdenv.lib.licenses.isc;
-      doCheck = false;
-    }) {};
-
-  f = { mkDerivation, astar, base
-      , bytestring, containers, ecstasy, JuicyPixels, JuicyPixels-extra
-      , linear, matrix, mtl, OpenGL, parallel, random, sdl2
-      , split, stdenv, stm, text, unordered-containers, vector
-      }:
-      mkDerivation {
-        pname = "tracer-game";
-        version = "0.0.0.0";
-        src = ./.;
-        isLibrary = false;
-        isExecutable = true;
-        executableHaskellDepends = [
-          affection algebraic-graphs astar base bytestring containers ecstasy
-          JuicyPixels JuicyPixels-extra linear matrix mtl nanovg OpenGL
-          parallel random sdl2 split stm text unordered-containers vector
-        ];
-        license = stdenv.lib.licenses.gpl3;
-      };
-
-  haskellPackages = if compiler == "default"
-                       then pkgs.haskellPackages
-                       else pkgs.haskell.packages.${compiler};
-
-  variant = if doBenchmark then pkgs.haskell.lib.doBenchmark else pkgs.lib.id;
-
-  drv = variant (haskellPackages.callPackage f {});
-
+  # create a modified haskell package set with my package inside it and broken dependencies
+  # jailbroken.
+  hpkgs = pkgs.haskellPackages.override {
+    overrides = hself: hsuper: {
+      tracer-game = hself.callCabal2nix "tracer-game" (gitignore ./.) {};
+      affection = hself.callCabal2nix "affection" (gitignore ../affection) {};
+    };
+  };
+  gitignore = dir: pkgs.nix-gitignore.gitignoreSource [] dir;
 in
-
-  if pkgs.lib.inNixShell then drv.env else drv
+  hpkgs.tracer-game.env