[bug#45225] [PATCH] gnu: grub: Fix unicode font loading when booting over TFTP.

[Stefan]

Hi Danny and Ludo!

This patch got pushed and later reverted, as it is causing issues, because 
/gnu/store…-grub…/share/grub/unicode.pf2 is sometimes not visible when building 
the grub.cfg file.

To understand what is happening here, I modified the creation of the grub.cfg 
file to write the directory entries of /gnu/store visible at build time into a 
file.

While the /gnu/store/ on disk shows thousands of entries, when building 
grub.cfg there are only about 400 entries visible in my case doing a guix 
system reconfigure. Although the grub-efi package is referred to with a 
file-append gexp to build the path to the unicode.pf2 in 
gnu/bootloader/grub.scm, it happens that the grub package is not available in 
all cases in /gnu/store. The grub-efi package is gotten via (bootloader-package 
bootloader) and the bootloader possibly from a /run/*-system/parameters file.

I also noticed that even all the Linux kernels and initrds – except for the 
recent pair –, which end up being referred to from the grub.cfg, are not 
visible in /gnu/store while building the grub.cfg.

What makes the list of visible entries in /gnu/store when building the 
grub.cfg? And why might the gexp-referred grub-efi package not always be 
visible? This feels like a bug to me.


Bye

Stefan