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-rw-r--r--pkgs/build-support/fetchgithub/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/build-support/fetchgithub/default.nix b/pkgs/build-support/fetchgithub/default.nix
index a2498700b545d..231c0fb622b96 100644
--- a/pkgs/build-support/fetchgithub/default.nix
+++ b/pkgs/build-support/fetchgithub/default.nix
@@ -19,7 +19,7 @@ let
   baseUrl = "https://${githubBase}/${owner}/${repo}";
   newMeta = meta // {
     homepage = meta.homepage or baseUrl;
-
+  } // lib.optionalAttrs (position != null) {
     # to indicate where derivation originates, similar to make-derivation.nix's mkDerivation
     position = "${position.file}:${toString position.line}";
   };