Hi,

I think the patch is wrong.  No comment regarding the udev rule itself (I do not know much about it), it does spam the logs with:

Oct 31 18:31:35 localhost vmunix: [   60.013538] udevd[327]: invalid key/value pair in file /gnu/store/a3xvv1zxzyb53r5r752q8nh9v9vd150h-udev-rules/69-dm-lvm.rules on line 78, starting at character 1 ('I')
Oct 31 18:31:35 localhost vmunix: [   60.013544] udevd[327]: invalid key/value pair in file /gnu/store/a3xvv1zxzyb53r5r752q8nh9v9vd150h-udev-rules/69-dm-lvm.rules on line 79, starting at character 32 (',')

The fix[0] for that is fairly trivial.

0: https://git.sr.ht/~graywolf/guix/commit/207794679281c1e7e5f2051719fe5c705506eb23

Have a nice day,
W.

-- 
There are only two hard things in Computer Science:
cache invalidation, naming things and off-by-one errors.