I get

[10/23/21 17:55:08 PDT] IDENTIFYING PROJECT TYPE FAILED
            A valid GDS was not found.

from mpw-3 precheck. Yet the repo contains both user_proj_example.gds.gz.00.split and user_proj_example.gds.gz.01.split files. What am I doing wrong?

I'm not sure we recognize split files any more (@User can confirm this?). Using

make compress

and

make uncompress

uses

gzip -n --best

which should be good enough to compress a file enough that github won't complain about it. But again, I'll let Manar weigh in on that.

It is the make compress command that created the split zip files. The compressed gds exceeds the 100MB limit.

@User looks like you are missing user_project_wrapper.gds. The split files are fine and expected. You need to instantiate your project inside of user_project_wrapper.gds. The file name and top cell name must match.

What does that mean? Do I need to do a make user_project_wrapper? Oh! Never mind, I had a missing file/