I looked at the difference between the last generation nextcloud-client worked and the first it segfaults and the list of differences is shown below [1]. Since nextcloud is a QT application not even gtk+ should make the difference. Therefore I suspect that it is in the nextcloud-client@3.2 source where the reason for the error is located. I tried to switch back to 3.1.3 but there doesn't seem to be an older version for nextcloud-client any more. > $ guix install nextcloud-client@3.1.3 > guix install: error: nextcloud-client: package not found for version 3.1.3 -- Alex [1] different packages between working and non-working generation (only packages with different versions are shown, versions, not hashes are considered): + python-jupyterlab 3.2.5 out /gnu/store/hsm2xijmav64liaay6ph2zyi0vx2mi4a-python-jupyterlab-3.2.5 - python-jupyterlab 2.2.9 out /gnu/store/fsqv8wajabyk7dn11pcqwsdb81rcnv00-python-jupyterlab-2.2.9 + ungoogled-chromium 96.0.4664.110-1 out /gnu/store/pa3k6j8i17bdhz4yw62n5pwg1ca4c1gi-ungoogled-chromium-96.0.4664.110-1 - ungoogled-chromium 96.0.4664.93-1 out /gnu/store/h74xpji0j9kck4lwlrvc02vjc04rbajr-ungoogled-chromium-96.0.4664.93-1 + nextcloud-client 3.2.0 out /gnu/store/9lqfvn04fsr5npr9glx4ikygdynxqwy1-nextcloud-client-3.2.0 - nextcloud-client 3.1.3 out /gnu/store/964z4rjzg8236wcf7v24048gvcqm71lh-nextcloud-client-3.1.3 + flameshot 0.10.2 out /gnu/store/gzkz2ycwpza4vv76zh0i3vwzblpl0kkm-flameshot-0.10.2 - flameshot 0.8.5 out /gnu/store/8s055qi18q8awrwji13ym5l27kcavmb1-flameshot-0.8.5 + cups 2.3.3op2 out /gnu/store/1id6r895258wj44wl75zf51c8igq8vmg-cups-2.3.3op2 - cups 2.3.3 out /gnu/store/bi9p7zj8jjbwxlgah91pqjxypywgaxvq-cups-2.3.3 + evince 40.2 out /gnu/store/n9pkb1145b9wd3l43ccxm241c29nlb6f-evince-40.2 - evince 3.36.5 out /gnu/store/kkxnc1qcvlaqhwyqzn7ix75v19zwkzy1-evince-3.36.5 + rofi 1.7.2 out /gnu/store/klq61hm4h97j11kczm7vlnfsrmwnf9s8-rofi-1.7.2 - rofi 1.7.0 out /gnu/store/x5rwxpy2w6a0s19yl52x2pir5xm9c75i-rofi-1.7.0 + gtk+ 3.24.30 out /gnu/store/p1x3p9x0x5g5m22dwzi7iw87bpxmb2sz-gtk+-3.24.30 - gtk+ 3.24.24 out /gnu/store/1dswfgvhwykglwkdfzvkypj5zjxicn96-gtk+-3.24.24 + poppler 21.07.0 out /gnu/store/gkiwa70z1w32xj51fyq9ya95famrh51q-poppler-21.07.0 - poppler 0.86.1 out /gnu/store/dyiipg5pd852zjwz2j1gd5s0zlxi3gyq-poppler-0.86.1 + pulseaudio 15.0 out /gnu/store/2ycq2ihp8zqg1687qd9k67xyzc4n0s42-pulseaudio-15.0 - pulseaudio 14.0 out /gnu/store/jjdrqjy4ns8arqdz37wi0qh43lc2z7d1-pulseaudio-14.0 + texlive 20210325 out /gnu/store/35xph93135j3l3l856b2504j1hll53vr-texlive-20210325 - texlive 20190410 out /gnu/store/c1ch558dhj4fh9d30lqb2nyqsrj0cfk1-texlive-20190410 + cmake 3.21.3 out /gnu/store/wxfx09c113lghn6axwa7gk4cb74ld9cp-cmake-3.21.3 - cmake 3.21.1 out /gnu/store/vfbw5h12hqg23bagnzgrmclds2vrky3q-cmake-3.21.1 + weechat 3.4 out /gnu/store/mnra0cii4br3731zjgbsivdpz7vknbc9-weechat-3.4 - weechat 3.3 out /gnu/store/9isbc51mvjidbrcpcwc8idkifn40jb1n-weechat-3.3 + gnupg 2.2.32 out /gnu/store/75122spwjdkxxgd32gkkil3n7ifax8i5-gnupg-2.2.32 - gnupg 2.2.29 out /gnu/store/cc0r4spdjr25pisaj4fs7pcyb62v1r2x-gnupg-2.2.29 + file 5.41 out /gnu/store/x6jwiap9rgdk6zkrp2ccwamw5qkrz92v-file-5.41 - file 5.38 out /gnu/store/h43rhpn3x2aifkk3sqhaaf6ia7hkqyhp-file-5.38 On Wed, Jan 05 2022, 16:22:01, help-debbugs@gnu.org (GNU bug Tracking System) wrote: > Thank you for filing a new bug report with debbugs.gnu.org. > > This is an automatically generated reply to let you know your message > has been received. > > Your message is being forwarded to the package maintainers and other > interested parties for their attention; they will reply in due course. > > Your message has been sent to the package maintainer(s): > bug-guix@gnu.org > > If you wish to submit further information on this problem, please > send it to 53028@debbugs.gnu.org. > > Please do not send mail to help-debbugs@gnu.org unless you wish > to report a problem with the Bug-tracking system.