bug#36876: guix system delete-generations removes custom boot menu entries

["Ludovic Courtès" <ludo@gnu.org>]

Hi there!

Ludovic Courtès <ludo@gnu.org> skribis:

> The attached patches should fix this.  I’ve successfully deleted a
> generation on my system. :-)  I don’t have extra menu entries though, so
> it’d be great if you could give it a try.

So I tried it on my laptop: I added a dummy menu entry, reconfigured,
rebooted, then ran “guix system delete-generations N”, and I confirm
that it preserves the extra menu entry.

There was a typo though:

> --- a/gnu/system.scm
> +++ b/gnu/system.scm
> @@ -116,6 +116,7 @@
>              boot-parameters-label
>              boot-parameters-root-device
>              boot-parameters-bootloader-name
> +            boot-parameters-bootloader-menu-entries
>              boot-parameters-store-device
>              boot-parameters-store-mount-point
>              boot-parameters-kernel
> @@ -251,6 +252,8 @@ directly by the user."
>    ;; OS's root file system, so it might be a device path like "/dev/sda3".
>    (root-device      boot-parameters-root-device)
>    (bootloader-name  boot-parameters-bootloader-name)
> +  (bootloader-menu-entries                        ;list of <menu-entry>
> +   boot-parameters-bootloader-menu-entries)
>    (store-device     boot-parameters-store-device)
>    (store-mount-point boot-parameters-store-mount-point)
>    (kernel           boot-parameters-kernel)
> @@ -297,6 +300,11 @@ file system labels."
>           ((_ args) args)
>           (#f       'grub))) ; for compatibility reasons.
>  
> +      (bootloader-menu-entries
> +       (match (assq 'bootloader-menu-entries rest)
> +         ((_ . entries) (map sexp->menu-entry entries))
                ^
There shouldn’t be a dot here.

I’ll go ahead and push these patches (with this correction) if there are
no objections.

Thanks,
Ludo’.