After update Thunar ceased to run gedit (it is still default for txt) when clicking on txt files. It just shows waiting cursor and does nothing.
$ guix describe Generation 87 Apr 04 2019 21:51:02 (current) guix 325a2e3 repository URL: https://git.savannah.gnu.org/git/guix.git <https://git.savannah.gnu.org/git/guix.git> branch: master commit: 325a2e35dcccb37498fed1c211aa4120103056ba $ thunar --version Thunar 1.8.4 (Xfce 4.12) $ gedit --version gedit - Version 3.28.1