oldkern appears before current entry in systemd-boot interface

[Juhan280]

Problem

This is normally not an issue because kernelstub sets the default to current here:

kernelstub/kernelstub/installer.py

Lines 184 to 188 in 1386e79

	with open(
	'%s/loader.conf' % self.loader_dir, mode='w') as loader:
	default_line = 'default %s-current\n' % self.opsys.name
	loader.write(default_line)

But when not using that as default, e.g. dual booting with windows and setting windows as default, if I press l during boot to boot into linux or 1 to select the first entry, it boots into the oldkern, since oldkern appears first in the list.

The sorting order is specified here: https://uapi-group.org/specifications/specs/boot_loader_specification/#sorting, basically, when sort-key doesn't exist, it compares the filename using version sort. And according to that current < oldkern, so oldkern becomes the first entry.

Possible fix

• One very quick way to resolve this is to use rename the files such a way that the current entry appears higher than oldkern. But this might not be desirable.
• The proper way of addressing this is to follow boot loader specification and provide the necessary entry keys (sort-key and version) so that the boot manager sorts them properly.