was running cl-update, ende with this 

 * (211 of 211) Btrfs filesystem utilities
 * Emerging sys-fs/btrfs-progs-6.14 ...                                                                                                                                                                      [ ok ]
    locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python3.12/locale.py", line 615, in setlocale
    return _setlocale(category, locale)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
locale.Error: unsupported locale setting
sphinx-build -M man "." "_build" -N 
Traceback (most recent call last):
  File "/usr/lib/python-exec/python3.12/sphinx-build", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/usr/lib/python3.12/site-packages/sphinx/cmd/build.py", line 476, in main
    locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python3.12/locale.py", line 615, in setlocale
    return _setlocale(category, locale)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
locale.Error: unsupported locale setting
make[1]: *** [Makefile:39: man] Error 1
make: *** [Makefile:532: build-Documentation] Error 2
 * ERROR: sys-fs/btrfs-progs-6.14::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=sys-fs/btrfs-progs-6.14::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=sys-fs/btrfs-progs-6.14::gentoo'`.
 * The complete build log is located at '/var/calculate/tmp/portage/sys-fs/btrfs-progs-6.14/temp/build.log'.
 * The ebuild environment file is located at '/var/calculate/tmp/portage/sys-fs/btrfs-progs-6.14/temp/environment'.
 * Working directory: '/var/calculate/tmp/portage/sys-fs/btrfs-progs-6.14/work/btrfs-progs-v6.14'
 * S: '/var/calculate/tmp/portage/sys-fs/btrfs-progs-6.14/work/btrfs-progs-v6.14'
/var/calculate/tmp/portage/sys-fs/btrfs-progs-6.14/temp/environment: line 99: warning: setlocale: LC_NUMERIC: cannot change locale (de_DE.UTF-8): No such file or directory
/var/calculate/tmp/portage/sys-fs/btrfs-progs-6.14/temp/environment: line 100: warning: setlocale: LC_TIME: cannot change locale (de_DE.UTF-8): No such file or directory

 * Failed to emerge sys-fs/btrfs-progs-6.14::gentoo
 * Update failed
calculate nonane #