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-rw-r--r--pkgs/development/libraries/eigen/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/development/libraries/eigen/default.nix b/pkgs/development/libraries/eigen/default.nix
index c38759e0c757..374f52c9cb06 100644
--- a/pkgs/development/libraries/eigen/default.nix
+++ b/pkgs/development/libraries/eigen/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation {
   nativeBuildInputs = [ cmake ];
 
   postInstall = ''
-    sed -e '/Cflags:/s@''${prefix}@@' -i "$out"/share/pkgconfig/eigen3.pc
+    sed -e '/Cflags:/s@''${prefix}/@@' -i "$out"/share/pkgconfig/eigen3.pc
   '';
   
   meta = with stdenv.lib; {