diff options
Diffstat (limited to 'gnu/build/vm.scm')
| -rw-r--r-- | gnu/build/vm.scm | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gnu/build/vm.scm b/gnu/build/vm.scm index a63a5d2eea..f2953621ec 100644 --- a/gnu/build/vm.scm +++ b/gnu/build/vm.scm @@ -468,6 +468,16 @@ GRUB configuration and OS-DRV as the stuff in it." (time-second (date->time-utc (make-date 0 0 0 0 1 1 1980 0))))) + ;; Our patched 'grub-mkrescue' honors this environment variable and passes + ;; it to 'mformat', which makes it the serial number of 'efi.img'. This + ;; allows for deterministic builds. + (setenv "GRUB_FAT_SERIAL_NUMBER" + (number->string (if volume-uuid + (string-hash (iso9660-uuid->string volume-uuid) + (expt 2 32)) + #x77777777) + 16)) + (let ((pipe (apply open-pipe* OPEN_WRITE grub-mkrescue "-o" target |