New comment by biopsin on void-packages repository

https://github.com/void-linux/void-packages/pull/41060#issuecomment-1350794829

Comment:
Meh it craps out

```
=> firefox-esr-102.6.0_1: running do_build ...
created virtual environment CPython3.11.1.final.0-64 in 18ms
  creator CPython3Posix(dest=/builddir/firefox-esr-102.6.0/obj-x86_64-unknown-linux-gnu/_virtualenvs/build, clear=False, no_vcs_ignore=False, global=False)
  activators BashActivator,CShellActivator,FishActivator,PowerShellActivator,PythonActivator
Creating global state directory from environment variable: /builddir/firefox-esr-102.6.0/mozbuild
Running "pip check" to verify compatibility between the system Python and the "mach" site.
Running "pip check" to verify compatibility between the system Python and the "build" site.
 0:03.08 Clobber not needed.
Error running mach:

    ['build']

The error occurred in code that was called by the mach command. This is either
a bug in the called code itself or in the way that mach is calling it.
You can invoke |./mach busted| to check if this issue is already on file. If it
isn't, please use |./mach busted file build| to report it. If |./mach busted| is
misbehaving, you can also inspect the dependencies of bug 1543241.

If filing a bug, please include the full output of mach, including this error
message.

The details of the failure are as follows:

ValueError: invalid mode: 'rU'

  File "/builddir/firefox-esr-102.6.0/python/mozbuild/mozbuild/build_commands.py", line 221, in build
    return driver.build(
           ^^^^^^^^^^^^^
  File "/builddir/firefox-esr-102.6.0/python/mozbuild/mozbuild/controller/building.py", line 1281, in build
    self._write_mozconfig_json()
  File "/builddir/firefox-esr-102.6.0/python/mozbuild/mozbuild/controller/building.py", line 1769, in _write_mozconfig_json
    with FileAvoidWrite(mozconfig_json) as fh:
  File "/builddir/firefox-esr-102.6.0/python/mozbuild/mozbuild/util.py", line 353, in __exit__
    self.close()
  File "/builddir/firefox-esr-102.6.0/python/mozbuild/mozbuild/util.py", line 277, in close
    existing = _open(self.name, self.mode)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/builddir/firefox-esr-102.6.0/python/mozbuild/mozbuild/util.py", line 63, in _open
    return io.open(path, mode, encoding="utf-8", newline="\n")
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
=> ERROR: firefox-esr-102.6.0_1: do_build: './mach build' exited with 1
=> ERROR:   in do_build() at srcpkgs/firefox-esr/template:235

```