Well I isolated that the issue is in fact due to some change in the pdk Can someone tell me the exact commit hashes I have to use?

@Baloch Should be

SKYWATER_COMMIT ?= bb2f842ac8d1b750677ca25bc71fb312859edb82
OPEN_PDKS_COMMIT ?= 7e29496eecf3ee8e1766f1b7f9441f97204d4735

These are specified in this Makefile https://github.com/efabless/caravel-lite/blob/13f2590e4b3a74b910dac56a6b757f5a66fd5212/Makefile#L62. Running

make pdk

from the caravel_user_project at the mpw-two-c should build the pdk with these tags

you also get the commits written into runs/user_project_wrapper/PDK_SOURCES so that's a good sanity check

Thanks @Matt Venn @Manar Abdelatty

Dunno, arguments to fit?

Alright