diff --git a/haga.org b/haga.org
index b1eb2da..81d339a 100644
--- a/haga.org
+++ b/haga.org
@@ -1,2 +1,22 @@
 * PROJECT haga
 ** TODO see TODOs in code
+** MAYBE Add factory floor optimizer
+   GA that optimizes factory floor
+   - data: graph of workstations with edge weights being the number of walks
+     between them
+   - desired: optimal configuration that reduces crossings
+   - space: 15 workstations that can be positioned in a 20 x 20 space
+* Unsorted ideas
+  - https://github.com/mikeizbicki/HerbiePlugin
+  - https://github.com/mikeizbicki/subhask
+  - hlearn
+* MAYBE Add seminar stats
+  - Which topic was chosen how often, how are the priorities distributed etc.
+    #+BEGIN_SRC haskell
+    fmap (\xs@(x : _) -> (fst x, fmap snd xs))
+      $ groupOn fst
+      $ sortOn fst
+      $ filter ((100 /=) . snd)
+      $ mconcat
+      $ snd <$> unP prios
+    #+END_SRC
diff --git a/release.nix b/release.nix
index c6d5cfc..8b5f56e 100644
--- a/release.nix
+++ b/release.nix
@@ -14,5 +14,6 @@ let
       };
     };
   };
-  pkgs = import <nixpkgs> { inherit config; };
+  # pkgs = import <nixpkgs> { inherit config; };
+  pkgs = import /home/david/Code/nixpkgs/default.nix { inherit config; };
 in { haga = pkgs.haskellPackages.haga; }