You can read the decision at this link.
Here was my initial coverage:
Michigan GOP Lawmakers Appear to Rely on Rejected Version of Independent State Legislature Theory to Attack Recent Voting Laws Passed by Initiative
I haven’t seen the complaint, from from the description of the facts and lawsuit here, this lawsuit should not have much chance of success.
If anyone has the complaint, pass it along and I will post here and provide additional analysis.
UPDATE: Here is is the complaint, via Democracy Docket. More to come.
SECOND UPDATE: This complaint is quite unimpressive, not even mentioning controlling contrary authority (the Arizona Independent Redistricting Commission Supreme Court case), or the recent and inconsistent Moore v. Harper case.