Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: firefox-beta-unwrapped 0 -> 1
attrpath: firefox-beta-unwrapped
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] these 2 derivations will be built:
  /nix/store/wrfqqzhimcf6ygdcg4fzn7fn24c4dij8-update-firefox-beta-unwrapped.drv
  /nix/store/miy4cc6gdk9yg3p76yhc88ql97c8g73x-packages.json.drv
building '/nix/store/wrfqqzhimcf6ygdcg4fzn7fn24c4dij8-update-firefox-beta-unwrapped.drv'...
structuredAttrs is enabled
building '/nix/store/miy4cc6gdk9yg3p76yhc88ql97c8g73x-packages.json.drv'...
structuredAttrs is enabled

Going to be running update for following packages:
 - firefox-beta-unwrapped-156.0b4

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - firefox-beta-unwrapped-156.0b4: UPDATING ...
 - firefox-beta-unwrapped-156.0b4: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/applications/networking/browsers/firefox/packages/firefox-beta.nix b/pkgs/applications/networking/browsers/firefox/packages/firefox-beta.nix
index fb86b569b675..415ee68efed1 100644
--- a/pkgs/applications/networking/browsers/firefox/packages/firefox-beta.nix
+++ b/pkgs/applications/networking/browsers/firefox/packages/firefox-beta.nix
@@ -10,11 +10,11 @@
 buildMozillaMach rec {
   pname = "firefox-beta";
   binaryName = "firefox-beta";
-  version = "156.0b4";
+  version = "157.0b4";
   applicationName = "Firefox Beta";
   src = fetchurl {
     url = "mirror://mozilla/firefox/releases/${version}/source/firefox-${version}.source.tar.xz";
-    sha512 = "2aa751d66854145bf260dd04fe1473ca20275c02e51c07efdda769d7980cdaee6dc393cac32fe3bb4ed131249fde81e150c284ee38af5fc560da7704947a6453";
+    sha512 = "46d2a920ab8dfc96ff0cc474ab970add255ccb8563d7938957a5759bf0de849092bf20f4b644ac2a5f1d43a1e43188eee0c0d3131075ada739fb85eb33ff0041";
   };
 
   meta = {

An auto update branch exists with message `firefox-beta-unwrapped: 156.0b4 -> 156.0b5`. New version is 157.0b4.
The auto update branch does not match or exceed the new version.
Received ExitFailure 1 when running
Raw command: nix-build --option sandbox true --arg config "{ allowUnfree = true; allowAliases = false; }" --arg overlays "[ ]" -A firefox-beta-unwrapped
nix build failed.
Creating local state directory: /build/mozbuild/srcdirs/firefox-157.0-c657f6969e7c
Running "pip check" to verify compatibility between the system Python and the "build" site.
Creating the 'build' site at /build/mozbuild/srcdirs/firefox-157.0-c657f6969e7c/_virtualenvs/build
 0:02.12(B Using Python 3.14.7 from /build/mozbuild/srcdirs/firefox-157.0-c657f6969e7c/_virtualenvs/build/bin/python(B(B
 0:02.12(B checking for vcs source checkout... no(B(B
 0:02.16(B checking for a shell... /nix/store/svx59425zxp552p2b8gm11qj5r09b56i-bash-5.3p15/bin/bash(B(B
 0:02.17(B checking for host system type... x86_64-unknown-linux-gnu(B(B
 0:02.17(B checking for target system type... x86_64-unknown-linux-gnu(B(B
 0:02.49(B checking whether cross compiling... no(B(B
 0:02.56(B checking if configuration file confvars.sh exists... /build/firefox-157.0/browser/confvars.sh(B(B
 0:02.56(B checking if configuration file configure.sh exists... /build/firefox-157.0/browser/branding/official/configure.sh(B(B
 0:02.58(B checking for the target C compiler... /nix/store/hinds6cn2zghbqnhiss1krbb88xjvf6w-clang-wrapper-21.1.8/bin/clang(B(B
 0:02.58(B checking for ccache... not found(B(B
 0:02.66(B checking whether the target C compiler can be used... yes(B(B
 0:02.66(B checking for the target C++ compiler... /nix/store/hinds6cn2zghbqnhiss1krbb88xjvf6w-clang-wrapper-21.1.8/bin/clang++(B(B
 0:02.77(B checking whether the target C++ compiler can be used... yes(B(B
 0:02.86(B checking for unwind.h... yes(B(B
 0:03.11(B checking for target linker... lld(B(B
 0:03.57(B checking for _Unwind_Backtrace... yes(B(B
 0:03.57(B Traceback (most recent call last):(B(B
 0:03.57(B   File "/build/firefox-157.0/configure.py", line 375, in <module>(B(B
 0:03.57(B     sys.exit(main(sys.argv))(B(B
 0:03.57(B              ~~~~^^^^^^^^^^(B(B
 0:03.57(B   File "/build/firefox-157.0/configure.py", line 174, in main(B(B
 0:03.57(B     sandbox.run()(B(B
 0:03.57(B     ~~~~~~~~~~~^^(B(B
 0:03.57(B   File "/build/firefox-157.0/python/mozbuild/mozbuild/configure/__init__.py", line 567, in run(B(B
 0:03.57(B     raise InvalidOptionError(msg)(B(B
 0:03.57(B mozbuild.configure.options.InvalidOptionError: Unknown option: --enable-ffmpeg(B(B
 0:03.74(B E(B *** Fix above errors and then restart with "./mach build"(B(B