For the more USA-oriented of us:
https://www.secretlystore.com/the-best-of-luck-club-alex-lahey (white "limited" vinyl)
also bandcamp: https://alexlahey.bandcamp.com/album/the-best-of-luck-club
Bull Moose has the white: https://www.bullmoose.com/p/29124872/alex-lahey-the-best-of-luck-club-white-vinyl
There's apparently also going to be black (Bull Moose link), but when I asked BM they said white was going to be the initial limited run and then a "standard" black pressing would come after that's gone. For what it's worth, they seemed to think the black might not actually be physically available on the stated release date for that reason (though that was definitely speculation). Nowhere else seems to make mention of the black at this point that I've seen, though.