Hello Guix, This patch allows to build Geary on the master branch. On my local branch fails with: -- ../source/meson.build:175:2: ERROR: Could not execute command "/tmp/guix-build-geary-40.0.drv-0/source/build-aux/git_version.py". A full log can be found at /tmp/guix-build-geary-40.0.drv-0/build/meson-logs/meson-log.txt error: in phase 'configure': uncaught exception: -- -- Rene