1 files changed, 6 insertions, 2 deletions

diff --git a/default.nix b/default.nix
index 629f1bb..ec776eb 100644
--- a/default.nix
+++ b/default.nix
@@ -1,7 +1,11 @@
 { pkgs ? (import <nixpkgs> {})
 }:
+
+with pkgs.lib;
     
-rec {
+let
+  sourceFilter = path: type: ((hasSuffix ".hs" path) || (baseNameOf path == "src") || (baseNameOf path == "blog.cabal"));
+in rec {
   haskellPackages = pkgs.haskellPackages.override {
     overrides = self : super : {
       hakyll = pkgs.haskell.lib.overrideCabal super.hakyll (drv: {
@@ -11,7 +15,7 @@ rec {
   };
   dirty-haskell = pkgs.stdenv.lib.overrideDerivation (haskellPackages.callPackage ./blog.nix {})
     (attrs :
-      { src = ./.;
+      { src = builtins.filterSource sourceFilter ./.;
         shellHook = ''
           export PROMPT_INFO=${attrs.name}
         '';