emscriptenPackages.libxml2 0 -> 1
attrpath: emscriptenPackages.libxml2
Checking auto update branch...
[version] 
[version] generic version rewriter does not support multiple hashes
[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/6i11mc4vyj9pk8hkgm66br40sf8y23mp-packages.json.drv
building '/nix/store/6i11mc4vyj9pk8hkgm66br40sf8y23mp-packages.json.drv'...

Going to be running update for following packages:
 - emscripten-libxml2-2.12.5

Press Enter key to continue...
Running update for:
 - emscripten-libxml2-2.12.5: UPDATING ...
 - emscripten-libxml2-2.12.5: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/development/libraries/libxml2/default.nix b/pkgs/development/libraries/libxml2/default.nix
index 78c5d09889aa..3a85582f6b1d 100644
--- a/pkgs/development/libraries/libxml2/default.nix
+++ b/pkgs/development/libraries/libxml2/default.nix
@@ -35,7 +35,7 @@ in
 let
 libxml = stdenv.mkDerivation (finalAttrs: rec {
   pname = "libxml2";
-  version = "2.12.5";
+  version = "2.12.6";
 
   outputs = [ "bin" "dev" "out" "doc" ]
     ++ lib.optional pythonSupport "py"
@@ -44,7 +44,7 @@ libxml = stdenv.mkDerivation (finalAttrs: rec {
 
   src = fetchurl {
     url = "mirror://gnome/sources/libxml2/${lib.versions.majorMinor version}/libxml2-${version}.tar.xz";
-    hash = "sha256-qXJ5Zpav04Bz4PWcKDw6L1pWC1JotLq8ORsoYWZSayE=";
+    hash = "sha256-iJxZOogaPbX92WzJMYyH3zTrZI7fxFgnKtRv1gc1P7s=";
   };
 
   strictDeps = true;

No auto update branch exists
Received ExitFailure 1 when running
Raw command: /nix/store/6r0bm8shswm9v08kzvq24ib48mx3kxmn-nix-2.18.1/bin/nix-build --option sandbox true --arg config "{ allowBroken = true; allowUnfree = true; allowAliases = false; }" --arg overlays "[ ]" -A emscriptenPackages.libxml2
Received ExitFailure 1 when running
Raw command: /nix/store/6r0bm8shswm9v08kzvq24ib48mx3kxmn-nix-2.18.1/bin/nix --extra-experimental-features nix-command log -f . emscriptenPackages.libxml2
Standard output:

error: build log of 'emscriptenPackages.libxml2' is not available