About my "make ship" problem, it is indeed magic being unable to handle one line in "$PDK_ROOT/sky130A/libs.tech/magic/current/sky130A.tech" which uses "obsli,obsm1" as the last argument to the paint command. It was not present in older versions of the file, so perhaps dealing with this has been added recently to magic? My version is pretty new, but obviously the thing to try is to update to the latest version of all. Patching the .tech file to see if there were more errors later on got me an actual caravel_out.gds file which both klayout and magic can read, though there was some errors about a missing "../mag/sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped.mag" file.