1 files changed, 4 insertions, 3 deletions
diff --git a/nixpkgs/pkgs/development/coq-modules/vcfloat/default.nix b/nixpkgs/pkgs/development/coq-modules/vcfloat/default.nix
index 5d1805c2573f..452cc0a59e83 100644
--- a/nixpkgs/pkgs/development/coq-modules/vcfloat/default.nix
+++ b/nixpkgs/pkgs/development/coq-modules/vcfloat/default.nix
@@ -1,10 +1,10 @@
 { lib, mkCoqDerivation, coq, interval, compcert, flocq, bignums, version ? null }:
 
-with lib; mkCoqDerivation {
+let self = with lib; mkCoqDerivation {
   pname = "vcfloat";
   owner = "VeriNum";
   inherit version;
-  sourceRoot = "source/vcfloat";
+  sourceRoot = "${self.src.name}/vcfloat";
   postPatch = ''
     coq_makefile -o Makefile -f _CoqProject *.v
   '';
@@ -21,4 +21,5 @@ with lib; mkCoqDerivation {
     maintainers = with maintainers; [ quinn-dougherty ];
     license = licenses.lgpl3Plus;
   };
-}
+};
+in self