Is MPL-2.0 compatible with Unlicense?
Yes.
Copyleft applies only to the copyleft-licensed files/library. Result license is the more restrictive of the inputs. You must satisfy every input license's notice and source-offer terms. Verify pairwise compatibility first.
Resulting work's license: MPL-2.0
General guidance, not legal advice.
Obligations when redistributing as open source
- MPL-2.0: retain the copyright notice and license text.
- MPL-2.0: state significant changes made to the code.
- MPL-2.0: disclose the source of modified MPL-2.0 files.
- MPL-2.0: modified MPL-2.0 files must remain under MPL-2.0.
Other distribution models
The verdict is the same under every distribution model; the obligations differ. Check this pair in the tool to switch models.