"locale.Error: unsupported locale setting" when Running Lutris Flatpak

[julianschacher]

When I start the Lutris flatpak using flatpak run net.lutris.Lutris I get the following error:

Traceback (most recent call last):
  File "/app/bin/lutris", line 27, in <module>
    locale.setlocale(locale.LC_ALL, "")
  File "/usr/lib/python3.7/locale.py", line 604, in setlocale
    return _setlocale(category, locale)
locale.Error: unsupported locale setting

My locale is (retrieved using the locale command):

LANG=en_US.UTF-8
LC_CTYPE=en_US.UTF-8
LC_NUMERIC=de_DE.UTF-8
LC_TIME=de_DE.UTF-8
LC_COLLATE=de_DE.UTF-8
LC_MONETARY=de_DE.UTF-8
LC_MESSAGES=en_US.UTF-8
LC_PAPER=de_DE.UTF-8
LC_NAME=de_DE.UTF-8
LC_ADDRESS=de_DE.UTF-8
LC_TELEPHONE=de_DE.UTF-8
LC_MEASUREMENT=de_DE.UTF-8
LC_IDENTIFICATION=de_DE.UTF-8
LC_ALL=

I would've suspected that this is an issue of the Lutris application itself, but if I start the Lutris installed via my package manager, I don't encounter this issue.

I can also circumvent this error by running the Lutris flatpak using the following command: env LC_ALL=en_US.UTF-8 flatpak run net.lutris.Lutris, but that's not a great solution.

[gasinvein]

Does running flatpak update --subpath=de org.gnome.Platform.Locale prior to launching Lutris help?

[julianschacher]

Yup, that fixed my issue. Thanks!

[gasinvein]

This doesn't look like something specific to Lutris to me. Maybe report it to https://github.com/flatpak/flatpak/issues?

[julianschacher]

I'll validate the issue with another app using org.gnome.Platform.Locale and then report it there.

[dreua]

I'm experiencing the same trying to create a flatpak of pdfarranger/pdfarranger#37. Also python based and my locale is also a mix of en_US and de_DE, workaround works but I'd like to have this fixed for users. It would be great if someone with more background knowledge of flatpak could report this.

[A6GibKm]

Note that upstream has

try:
    locale.setlocale(locale.LC_ALL, "")
except locale.Error:
    sys.stderr.write("Unsupported locale setting. Fix your locales\n")

idk if this is ok nor if it is related.