I'm wondering if it's normal to have *-grub.cfg.drv rebuilt on successive "guix system reconfigure", when nothing has changed between first and subsequent runs.
Is this reproducible on your GuixSD systems ? root@guixsd /etc# guix system reconfigure /etc/config.scm The following derivation will be built: /gnu/store/786b130gin8jrhksbwfimpi2xjnc2fsd-grub.cfg.drv /gnu/store/j05dqpaj3ln3s512nzp39i4nzrpfxwaf-system /gnu/store/900qjchmspy9iyxyzz48bw2sh5k861nq-grub.cfg /gnu/store/gka9rl2k8mqqi27rrvjpgz6yw165d3if-grub-2.02beta3 activating system... setting up setuid programs in '/run/setuid-programs'... populating /etc from /gnu/store/lwvwgajp7yigf8hmwm56wvf5rh94i5hm-etc... usermod: no changes usermod: no changes usermod: no changes making '/gnu/store/j05dqpaj3ln3s512nzp39i4nzrpfxwaf-system' the current system... Installing for i386-pc platform. Installation finished. No error reported. root@guixsd /etc# guix system reconfigure /etc/config.scm The following derivation will be built: /gnu/store/l4lsqqyncz8pq5w4hqjsl49rydjfqwb8-grub.cfg.drv /gnu/store/j05dqpaj3ln3s512nzp39i4nzrpfxwaf-system /gnu/store/wb836hy9adib0phxvzzcdigvhmvaq52d-grub.cfg /gnu/store/gka9rl2k8mqqi27rrvjpgz6yw165d3if-grub-2.02beta3 activating system... setting up setuid programs in '/run/setuid-programs'... populating /etc from /gnu/store/lwvwgajp7yigf8hmwm56wvf5rh94i5hm-etc... usermod: no changes usermod: no changes usermod: no changes making '/gnu/store/j05dqpaj3ln3s512nzp39i4nzrpfxwaf-system' the current system... Installing for i386-pc platform. Installation finished. No error reported. -- Vincent Legoll