New comment by eoli3n on void-packages repository https://github.com/void-linux/void-packages/issues/27255#issuecomment-748582620 Comment: it seems strange to me that this is so hard to fix. Could it be related to the way the package is built ? - Archlinux [PKGBUILD](https://github.com/archlinux/svntogit-packages/blob/packages/firefox/trunk/PKGBUILD) - Void [template](https://github.com/void-linux/void-packages/blob/master/srcpkgs/firefox/template) In PKGBUILD, some things which could be related to this, that i can't find in template: - Alllow addon sideload : https://github.com/archlinux/svntogit-packages/blob/packages/firefox/trunk/PKGBUILD#L75 - Use LANG env var : https://github.com/archlinux/svntogit-packages/blob/packages/firefox/trunk/PKGBUILD#L153