2 files changed, 3 insertions, 3 deletions
diff --git a/pkgs/applications/science/logic/isabelle/default.nix b/pkgs/applications/science/logic/isabelle/default.nix
index 2471aa8b594c..b9e756e0423b 100644
--- a/pkgs/applications/science/logic/isabelle/default.nix
+++ b/pkgs/applications/science/logic/isabelle/default.nix
@@ -3,7 +3,7 @@
 
 let
   pname = "Isabelle";
-  version = "2009-1";
+  version = "2009-2";
   name = "${pname}${version}";
   theories = ["HOL" "FOL" "ZF"];
 in
@@ -13,7 +13,7 @@ stdenv.mkDerivation {
 
   src = fetchurl {
     url = "http://www.cl.cam.ac.uk/research/hvg/${pname}/dist/${name}.tar.gz";
-    sha256 = "43ad7794e8b4214b3ace49fc136a69ed6cc65ead02831ae6071f846ecbe56f68";
+    sha256 = "f92a275b78bd8844de47a5902e339b58f3b768c07a7fb19d8e606b68499d5ac4";
   };
 
   buildInputs = [ perl polyml nettools ];
diff --git a/pkgs/applications/science/logic/isabelle/settings.patch b/pkgs/applications/science/logic/isabelle/settings.patch
index 15a70944087b..dc9c611d4886 100644
--- a/pkgs/applications/science/logic/isabelle/settings.patch
+++ b/pkgs/applications/science/logic/isabelle/settings.patch
@@ -6,7 +6,7 @@ diff -Naur Isabelle2009-1/etc/settings Isabelle2009-1-patched/etc/settings
  
  # Poly/ML 5.x (automated settings)
 -POLY_HOME="$(type -p poly)"; [ -n "$POLY_HOME" ] && POLY_HOME="$(dirname "$POLY_HOME")"
- ML_PLATFORM=$("$ISABELLE_HOME/lib/scripts/polyml-platform")
+ ML_PLATFORM="$ISABELLE_PLATFORM"
 -ML_HOME=$(choosefrom \
 -  "$ISABELLE_HOME/contrib/polyml/$ML_PLATFORM" \
 -  "$ISABELLE_HOME/../polyml/$ML_PLATFORM" \