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-rw-r--r--pkgs/development/ocaml-modules/ocamlgraph/default.nix14
1 files changed, 5 insertions, 9 deletions
diff --git a/pkgs/development/ocaml-modules/ocamlgraph/default.nix b/pkgs/development/ocaml-modules/ocamlgraph/default.nix
index bbef4e010159..579571ef6253 100644
--- a/pkgs/development/ocaml-modules/ocamlgraph/default.nix
+++ b/pkgs/development/ocaml-modules/ocamlgraph/default.nix
@@ -1,12 +1,8 @@
 {stdenv, fetchurl, ocaml, findlib, ocamlPackages }:
 
-let
-  ocaml_version = (builtins.parseDrvName ocaml.name).version;
-  version = "1.8.5";
-in
-
-stdenv.mkDerivation {
+stdenv.mkDerivation rec {
   name = "ocamlgraph-${version}";
+  version = "1.8.5";
 
   src = fetchurl {
     url = "http://ocamlgraph.lri.fr/download/ocamlgraph-${version}.tar.gz";
@@ -22,9 +18,9 @@ stdenv.mkDerivation {
   # * configure looked in the wrong path
   # * ocaml needs that directory and the stubs directory as -I flag
   postPatch = ''
-    sed -i 's@$(DESTDIR)$(OCAMLLIB)/ocamlgraph@$(DESTDIR)/lib/ocaml/${ocaml_version}/site-lib/ocamlgraph@' Makefile.in
-    sed -i 's@$OCAMLLIB/lablgtk2@${ocamlPackages.lablgtk}/lib/ocaml/${ocaml_version}/site-lib/lablgtk2@' configure Makefile.in
-    sed -i 's@+lablgtk2@${ocamlPackages.lablgtk}/lib/ocaml/${ocaml_version}/site-lib/lablgtk2 -I ${ocamlPackages.lablgtk}/lib/ocaml/${ocaml_version}/site-lib/stublibs@' configure Makefile.in editor/Makefile
+    sed -i 's@$(DESTDIR)$(OCAMLLIB)/ocamlgraph@$(DESTDIR)/lib/ocaml/${ocaml.version}/site-lib/ocamlgraph@' Makefile.in
+    sed -i 's@$OCAMLLIB/lablgtk2@${ocamlPackages.lablgtk}/lib/ocaml/${ocaml.version}/site-lib/lablgtk2@' configure Makefile.in
+    sed -i 's@+lablgtk2@${ocamlPackages.lablgtk}/lib/ocaml/${ocaml.version}/site-lib/lablgtk2 -I ${ocamlPackages.lablgtk}/lib/ocaml/${ocaml.version}/site-lib/stublibs@' configure Makefile.in editor/Makefile
   '';
 
   createFindlibDestdir = true;