diff options
Diffstat (limited to 'gnu/system/grub.scm')
| -rw-r--r-- | gnu/system/grub.scm | 84 |
1 files changed, 50 insertions, 34 deletions
diff --git a/gnu/system/grub.scm b/gnu/system/grub.scm index 5dc0b85ff2..e789e4c591 100644 --- a/gnu/system/grub.scm +++ b/gnu/system/grub.scm @@ -22,10 +22,16 @@ #:use-module (guix derivations) #:use-module (guix records) #:use-module (guix monads) + #:use-module (guix gexp) #:use-module (ice-9 match) #:use-module (srfi srfi-1) - #:export (menu-entry + #:export (grub-configuration + grub-configuration? + grub-configuration-device + + menu-entry menu-entry? + grub-configuration-file)) ;;; Commentary: @@ -34,51 +40,61 @@ ;;; ;;; Code: +(define-record-type* <grub-configuration> + grub-configuration make-grub-configuration + grub-configuration? + (grub grub-configuration-grub ; package + (default (@ (gnu packages grub) grub))) + (device grub-configuration-device) ; string + (menu-entries grub-configuration-menu-entries ; list + (default '())) + (default-entry grub-configuration-default-entry ; integer + (default 1)) + (timeout grub-configuration-timeout ; integer + (default 5))) + (define-record-type* <menu-entry> menu-entry make-menu-entry menu-entry? (label menu-entry-label) (linux menu-entry-linux) (linux-arguments menu-entry-linux-arguments - (default '())) - (initrd menu-entry-initrd)) ; file name of the initrd + (default '())) ; list of string-valued gexps + (initrd menu-entry-initrd)) ; file name of the initrd as a gexp -(define* (grub-configuration-file entries - #:key (default-entry 1) (timeout 5) - (system (%current-system))) - "Return the GRUB configuration file for ENTRIES, a list of -<menu-entry> objects, defaulting to DEFAULT-ENTRY and with the given TIMEOUT." - (define (prologue kernel) - (format #f " -set default=~a -set timeout=~a -search.file ~a~%" - default-entry timeout kernel)) - - (define (bzImage) - (any (match-lambda - (($ <menu-entry> _ linux) - (package-file linux "bzImage" - #:system system))) - entries)) +(define* (grub-configuration-file config entries + #:key (system (%current-system))) + "Return the GRUB configuration file corresponding to CONFIG, a +<grub-configuration> object." + (define all-entries + (append entries (grub-configuration-menu-entries config))) - (define entry->text + (define entry->gexp (match-lambda (($ <menu-entry> label linux arguments initrd) - (mlet %store-monad ((linux (package-file linux "bzImage" - #:system system))) - (return (format #f "menuentry ~s { - linux ~a ~a + #~(format port "menuentry ~s { + linux ~a/bzImage ~a initrd ~a }~%" - label - linux (string-join arguments) initrd)))))) + #$label + #$linux (string-join (list #$@arguments)) + #$initrd)))) + + (define builder + #~(call-with-output-file #$output + (lambda (port) + (format port " +set default=~a +set timeout=~a +search.file ~a/bzImage~%" + #$(grub-configuration-default-entry config) + #$(grub-configuration-timeout config) + #$(any (match-lambda + (($ <menu-entry> _ linux) + linux)) + all-entries)) + #$@(map entry->gexp all-entries)))) - (mlet %store-monad ((kernel (bzImage)) - (body (sequence %store-monad - (map entry->text entries)))) - (text-file "grub.cfg" - (string-append (prologue kernel) - (string-concatenate body))))) + (gexp->derivation "grub.cfg" builder)) ;;; grub.scm ends here |