Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: arpa2-leaf 0 -> 1
attrpath: arpa2-leaf
Checking auto update branch...
[version] 
[version] skipping because derivation has updateScript
[rustCrateVersion] 
[rustCrateVersion] No cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/sk8p3pipn0pd9lc4ipmr9z86idbgab1s-packages.json.drv
building '/nix/store/sk8p3pipn0pd9lc4ipmr9z86idbgab1s-packages.json.drv'...

Going to be running update for following packages:
 - arpa2-leaf-0.2

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - arpa2-leaf-0.2: UPDATING ...
 - arpa2-leaf-0.2: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/ar/arpa2-leaf/package.nix b/pkgs/by-name/ar/arpa2-leaf/package.nix
index 3881c6094014..b0f34df9476b 100644
--- a/pkgs/by-name/ar/arpa2-leaf/package.nix
+++ b/pkgs/by-name/ar/arpa2-leaf/package.nix
@@ -14,13 +14,13 @@
 stdenv.mkDerivation (finalAttrs: {
   # leaf is already used
   pname = "arpa2-leaf";
-  version = "0.2";
+  version = "0.3";
 
   src = fetchFromGitLab {
     owner = "arpa2";
     repo = "leaf";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-s52gtxM+BmG7oVrB5F0ORjkb4F3fWONiOxIWdDn2P5k=";
+    hash = "sha256-I2fJ3QkVFRRk9VVSQd0UKl01NDTYo9UGVhrL/mdy0vE=";
   };
 
   strictDeps = true;

No auto update branch exists
Received ExitFailure 1 when running
Raw command: nix-build --option sandbox true --arg config "{ allowUnfree = true; allowAliases = false; }" --arg overlays "[ ]" -A arpa2-leaf
Received ExitFailure 1 when running
Raw command: nix --extra-experimental-features nix-command log -f . arpa2-leaf --arg config "{ allowUnfree = true; allowAliases = false; }" --arg overlays "[ ]"
Standard output:

error: build log of 'arpa2-leaf' is not available