1. > xournal
  2. Fontconfig warning: "/etc/fonts/2.11/fonts.conf", line 5: unknown element "description"
  3. Fontconfig error: "/etc/fonts/2.11/fonts.conf", line 5: invalid attribute 'domain'
  4. Fontconfig warning: "/etc/fonts/conf.d/10-hinting-slight.conf", line 4: unknown element "description"
  5. Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 4: unknown element "description"
  6. Fontconfig warning: "/etc/fonts/conf.d/20-unhint-small-vera.conf", line 4: unknown element "description"
  7. Fontconfig warning: "/etc/fonts/conf.d/30-metric-aliases.conf", line 4: unknown element "description"
  8. Fontconfig warning: "/etc/fonts/conf.d/40-nonlatin.conf", line 4: unknown element "description"
  9. Fontconfig warning: "/etc/fonts/conf.d/45-generic.conf", line 4: unknown element "description"
  10. Fontconfig warning: "/etc/fonts/conf.d/45-latin.conf", line 4: unknown element "description"
  11. Fontconfig warning: "/etc/fonts/conf.d/49-sansserif.conf", line 4: unknown element "description"
  12. Fontconfig warning: "/etc/fonts/conf.d/50-user.conf", line 4: unknown element "description"
  13. Fontconfig warning: "/etc/fonts/conf.d/51-local.conf", line 4: unknown element "description"
  14. Fontconfig warning: "/etc/fonts/conf.d/60-generic.conf", line 4: unknown element "description"
  15. Fontconfig warning: "/etc/fonts/conf.d/60-latin.conf", line 4: unknown element "description"
  16. Fontconfig warning: "/etc/fonts/conf.d/65-nonlatin.conf", line 4: unknown element "description"
  17. Fontconfig error: Cannot load config file from /etc/fonts/2.11/fonts.conf
  18. Fontconfig warning: FcPattern object weight does not accept value [50 200)
  19. [1] 7252 segmentation fault (core dumped) xournal
  21. Full strace here: http://kfx.fr/nixos/xournal-nixos20.09-strace

Xournal broken in NixOS 20.09 freshly upgraded, Xournalpp works though.

I do have experienced few fonts issue recently, solved with a quick, blind fc-cache -fr

WM/DE EXWM.