Why does Grub2 present twice/double menuentry for each ostree entry

[guiltydoggy (Yosuke)]

See this:

Duplicated GRUB entries on Silverblue/Kinoite

See How to delete old deployments in Silverblue I think there might be a problem with how the grub.cfg is being generated. I see duplicated grub entries in my system, and 2 fresh VM installs: [grub_double] The first 2 options work, but the second set give an error if selected: [grub_error] I traced it back to /etc/grub.d/15_ostree generating these last 2 entries, which I think is in error? Seems like the codepath from this patch to generate the hidden file /boot/grub2/.grub2-blscfg-suppor…

And:
https://fedoraproject.org/wiki/Changes/BootLoaderSpecByDefault#Config_files_provided_by_kernel.2C_grub2-switch-to-blscfg.2C_and_zipl-switch-to-blscfg