diff --git a/AUTHORS b/AUTHORS
new file mode 100644
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,2 @@
+Jan Rochel
+Chas Leichner (Google Inc.)
diff --git a/graph-rewriting-ski.cabal b/graph-rewriting-ski.cabal
--- a/graph-rewriting-ski.cabal
+++ b/graph-rewriting-ski.cabal
@@ -1,5 +1,5 @@
 Name:           graph-rewriting-ski
-Version:        0.6.4
+Version:        0.6.5
 Copyright:      (c) 2010, Jan Rochel
 License:        BSD3
 License-File:   LICENSE
@@ -13,10 +13,11 @@
 Category:       Compilers/Interpreters, Application
 Cabal-Version:  >= 1.6
 Data-Files:     examples/*.ski examples/combinator_birds/*.ski
+Extra-Source-Files: AUTHORS
 
 Executable ski-inet
   Main-Is:        INet/Main.hs
-  GHC-Options:    -fno-warn-duplicate-exports -fwarn-unused-binds -fwarn-unused-imports -fwarn-unused-do-bind -fwarn-wrong-do-bind -fwarn-unrecognised-pragmas
+  GHC-Options:    -fno-warn-duplicate-exports -fwarn-unused-binds -fwarn-unused-imports -fwarn-unused-do-bind -fwarn-wrong-do-bind -fwarn-unrecognised-pragmas -fno-warn-tabs
   Other-Modules:  Common.GL INet.GL INet.Graph INet.Rules Common.Term
   Extensions:
     UnicodeSyntax
@@ -24,18 +25,18 @@
     FlexibleContexts
     MultiParamTypeClasses
   Build-Depends:
-    base >= 4.3 && < 4.8,
+    base >= 4.3 && < 4.9,
     base-unicode-symbols >= 0.2 && < 0.3,
-    graph-rewriting >= 0.7 && < 0.8,
-    graph-rewriting-layout >= 0.5 && < 0.6,
-    graph-rewriting-gl >= 0.6.9 && < 0.8,
-    parsec >= 2.1 && < 2.2,
-    GLUT >= 2.2 && < 2.6,
-    OpenGL >= 2.4 && < 2.10
+    graph-rewriting >= 0.7.6 && < 0.8,
+    graph-rewriting-layout >= 0.5.4 && < 0.6,
+    graph-rewriting-gl >= 0.7.6 && < 0.8,
+    parsec == 3.1.*,
+    GLUT >= 2.4 && < 2.10,
+    OpenGL == 3.*
 
 Executable ski-direct
   Main-Is:        Direct/Main.hs
-  GHC-Options:    -fno-warn-duplicate-exports -fwarn-unused-binds -fwarn-unused-imports -fwarn-unused-do-bind -fwarn-wrong-do-bind -fwarn-unrecognised-pragmas
+  GHC-Options:    -fno-warn-duplicate-exports -fwarn-unused-binds -fwarn-unused-imports -fwarn-unused-do-bind -fwarn-wrong-do-bind -fwarn-unrecognised-pragmas -fno-warn-tabs -fno-warn-tabs
   Other-Modules:  Common.GL Direct.GL Direct.Graph Direct.Rules Common.Term
   Extensions:
     UnicodeSyntax
@@ -43,11 +44,11 @@
     FlexibleContexts
     MultiParamTypeClasses
   Build-Depends:
-    base >= 4.3 && < 4.8,
+    base >= 4.3 && < 4.9,
     base-unicode-symbols >= 0.2 && < 0.3,
     graph-rewriting >= 0.7 && < 0.8,
     graph-rewriting-layout >= 0.5 && < 0.6,
     graph-rewriting-gl >= 0.6.9 && < 0.8,
-    parsec >= 2.1 && < 2.2,
-    GLUT >= 2.2 && < 2.3,
-    OpenGL >= 2.4 && < 2.5
+    parsec == 3.1.*,
+    GLUT >= 2.4 && < 2.10,
+    OpenGL == 3.*