Re: b4 fails filter-repo with FileNotFoundError

On 15/06/2026 15:52, Tomi Valkeinen wrote:
> Hi,
> 
> I'm seeing this with a few commands, I think at least "b4 trailers -u" 
> and "b4 prep --edit-cover". Linux mint, b4 0.15.2.

I forgot to say, even with the error, the actual job still seems to be done.

  Tomi

> $ b4 prep --edit-cover
> Invoking git-filter-repo to update the cover letter.
> New history written in 0.07 seconds...
> Traceback (most recent call last):
>    File "/home/tomba/.local/bin/b4", line 6, in <module>
>      sys.exit(cmd())
>               ^^^^^
>    File "/home/tomba/.local/share/pipx/venvs/b4/lib/python3.12/site- 
> packages/b4/command.py", line 512, in cmd
>      cmdargs.func(cmdargs)
>    File "/home/tomba/.local/share/pipx/venvs/b4/lib/python3.12/site- 
> packages/b4/command.py", line 85, in cmd_prep
>      b4.ez.cmd_prep(cmdargs)
>    File "/home/tomba/.local/share/pipx/venvs/b4/lib/python3.12/site- 
> packages/b4/ez.py", line 3145, in cmd_prep
>      return edit_cover()
>             ^^^^^^^^^^^^
>    File "/home/tomba/.local/share/pipx/venvs/b4/lib/python3.12/site- 
> packages/b4/ez.py", line 885, in edit_cover
>      store_cover(new_cover, tracking)
>    File "/home/tomba/.local/share/pipx/venvs/b4/lib/python3.12/site- 
> packages/b4/ez.py", line 749, in store_cover
>      run_frf(frf)
>    File "/home/tomba/.local/share/pipx/venvs/b4/lib/python3.12/site- 
> packages/b4/ez.py", line 157, in run_frf
>      frf.run()
>    File "/home/tomba/.local/share/pipx/venvs/b4/lib/python3.12/site- 
> packages/git_filter_repo.py", line 4936, in run
>      self._record_metadata(self.results_tmp_dir(), self._orig_refs)
>    File "/home/tomba/.local/share/pipx/venvs/b4/lib/python3.12/site- 
> packages/git_filter_repo.py", line 4767, in _record_metadata
>      self._compute_metadata(metadata_dir, orig_refs)
>    File "/home/tomba/.local/share/pipx/venvs/b4/lib/python3.12/site- 
> packages/git_filter_repo.py", line 4648, in _compute_metadata
>      with open(os.path.join(metadata_dir, b'first-changed-commits'), 
> 'br') as f:
>           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> FileNotFoundError: [Errno 2] No such file or directory: b'/home/tomba/ 
> work/linux/.git/worktrees/linux-renesas/filter-repo/first-changed-commits'
> 
> I'm not sure if this is related to working under 
> "[email protected]" email when in linux-renesas 
> directory, as I don't see this on my "normal" linux tree. Then again, I 
> think "b4 prep --edit-cover" was working fine on linux-renesas earlier 
> today (but "b4 trailers -u" was failing), but now both edit-cover and 
> trailers is giving this error.
> 
>   Tomi
>