google-compute-engine 0 -> 1
attrpath: google-compute-engine
Checking auto update branch...
[version] 
[version] skipping because derivation has updateScript
[rustCrateVersion] 
[rustCrateVersion] No cargoSha256 or cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorSha256 or vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/s6d60j69dwc7kvs57f0qwyhay0ic4111-packages.json.drv
building '/nix/store/s6d60j69dwc7kvs57f0qwyhay0ic4111-packages.json.drv'...

Going to be running update for following packages:
 - google-compute-engine-20190124

Press Enter key to continue...
Running update for:
 - google-compute-engine-20190124: UPDATING ...
 - google-compute-engine-20190124: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/tools/virtualization/google-compute-engine/default.nix b/pkgs/tools/virtualization/google-compute-engine/default.nix
index c980a45bbef2..57e666807c66 100644
--- a/pkgs/tools/virtualization/google-compute-engine/default.nix
+++ b/pkgs/tools/virtualization/google-compute-engine/default.nix
@@ -11,13 +11,13 @@
 
 buildPythonPackage rec {
   pname = "google-compute-engine";
-  version = "20190124";
+  version = "20191210";
 
   src = fetchFromGitHub {
     owner = "GoogleCloudPlatform";
     repo = "compute-image-packages";
-    rev = version;
-    sha256 = "08cy0jd463kng6hwbd3nfldsp4dpd2lknlvdm88cq795wy0kh4wp";
+    rev = "refs/tags/v${version}";
+    sha256 = "sha256-kU8fz3+YoBfx4ovAQLGv5wlZleM3ZRCJnnGLB/1jKuU=";
   };
 
   buildInputs = [ bash ];

No auto update branch exists
Received ExitFailure 1 when running
Raw command: /nix/store/9m6hqyx9cyawc39125ci1x2wjsk5wpf1-nix-2.18.5/bin/nix-build --option sandbox true --arg config "{ allowBroken = true; allowUnfree = true; allowAliases = false; }" --arg overlays "[ ]" -A google-compute-engine
Received ExitFailure 1 when running
Raw command: /nix/store/9m6hqyx9cyawc39125ci1x2wjsk5wpf1-nix-2.18.5/bin/nix --extra-experimental-features nix-command log -f . google-compute-engine
Standard output:

error: build log of 'google-compute-engine' is not available