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Diffstat (limited to 'pkgs/applications/science/chemistry/gwyddion/default.nix')
-rw-r--r--pkgs/applications/science/chemistry/gwyddion/default.nix4
1 files changed, 2 insertions, 2 deletions
diff --git a/pkgs/applications/science/chemistry/gwyddion/default.nix b/pkgs/applications/science/chemistry/gwyddion/default.nix
index 4f028e0053a..6ea6be52fce 100644
--- a/pkgs/applications/science/chemistry/gwyddion/default.nix
+++ b/pkgs/applications/science/chemistry/gwyddion/default.nix
@@ -2,11 +2,11 @@
 
 with stdenv.lib;
 
+let version = "2.48"; in
 stdenv.mkDerivation {
   name = "gwyddion-${version}";
-  version = "2.48";
   src = fetchurl {
-    url = "http://sourceforge.net/projects/gwyddion/files/gwyddion/2.48/gwyddion-2.48.tar.xz";
+    url = "http://sourceforge.net/projects/gwyddion/files/gwyddion/${version}/gwyddion-${version}.tar.xz";
     sha256 = "119iw58ac2wn4cas6js8m7r1n4gmmkga6b1y711xzcyjp9hshgwx";
   };
   nativeBuildInputs = [ pkgconfig ];