reinstalling from my local mirror seems to fix it. maybe important to reinstall other packages too. but, i've already moved the disk drive back, breaking unidirectionality of device reattachment once, no need to repeat.

transferring the files using my normal approach, or at least what i've done recently

and it's contributed! I wanted to clean it up more but i'm kinda spazzing so I just submitted it as is. https://github.com/urjaman/frser-m328lpcspi/pull/2

the glories of spamming cypherpunks