Danny Milosavljevic <dannym@scratchpost.org> writes:

>> Hmm, did you mean (package->drivation (grub-configuration-grub (operating-system-bootloader os))) ? Otherwise it can't work.
>
> Fixing typo:
>
> Hmm, did you mean (package->derivation (grub-configuration-grub (operating-system-bootloader os))) ? Otherwise it can't work.
>
> It gives you a derivation which you can use derivation->output-path
> (which returns a file path) on and then invoke the executable or
> whatever.

That's it! This makes it pick up (bootloader (grub-configuration (grub
grub-efi))) from my config.scm:

making '/gnu/store/kgk9rrawq9fxh1g2j6121gl3lcz47395-system' the current system...
Installing for x86_64-efi platform.
Installation finished. No error reported.

Even though I'm now working on multi-platform grub, I think we should
have this anyway so that the "grub" argument works as expected. WDYT?

Also, since this works, maybe it's better to have grub-efi as a separate
package, as it will add ~8MiB to the grub closure (the x86_64-efi
platform directory is 6.1MiB; efibootmgr adds another ~2MiB).

Thanks!