diff --git a/flake.nix b/flake.nix
index 1298aa3f6641fa39b1ae1e5d495fabb8f175b81c..3c81421e5e6817b4f65a620d36b0ebf724a191da 100644
--- a/flake.nix
+++ b/flake.nix
@@ -50,7 +50,7 @@
 #            ${versionToolPackage}/bin/version build > $out.build
 #          '';
 #
-#          version = builtins.readFile "${versionAndBuild}.version";
+#          version = builtins.trace (builtins.readFile "${versionAndBuild}.version";
 #          build = builtins.readFile "${versionAndBuild}.build";
 
           versionAndBuild = pkgs.runCommand "get-version-and-build" {
@@ -60,6 +60,8 @@
               ${versionToolPackage}/bin/version build > $out/build
           '';           
           
+          version = builtins.trace (builtins.readFile "${versionAndBuild}.version") "Reading version";
+          build = builtins.trace (builtins.readFile "${versionAndBuild}.build") "Reading build";
           
         in
         {