CPANFile Plugin Creating Two cpanfiles

[theory]

Looks like a recent-ish change to Dist::Zilla causes some plugin to create a cpanfile even if the CPANFile plugin isn't enabled. Noticed with this config:

[CPANFile]
filename = dist/cpanfile

Used to just create dist/cpanfile, but now I see there is also a cpanfile. If I remove the filename line, I get an error:

[DZ] attempt to add cpanfile multiple times; added by: filename set by GatherDir (Dist::Zilla::Plugin::GatherDir line 226); encoded_content added by GatherDir (Dist::Zilla::Plugin::GatherDir line 227); text from coderef added by CPANFile (Dist::Zilla::Plugin::CPANFile line 113)
aborting; duplicate files would be produced at lib/perl5/site_perl/5.30.2/Dist/Zilla/App/Command/build.pm line 107.

Does GatherDir now always create a cpanfile?

[Grinnz]

No, but it will gather one if it exists in the directory and is not excluded.

[theory]

Seems like it ought not do that if CPANFile generated it.

[Grinnz]

Plugins have no interaction as to what files they generate in the build. It's up to you to prevent a file from being gathered if it is also being generated.

[theory]

Right, but didn't do that before; perhaps the order in which the plugins run is non-deterministic, and I just by chance didn't notice it happen before?

[theory]

I'm an idiot. It is not generating the root cpanfile, I just happened to have a copy of it in my working directory, not committed or anything. 🤦🏻 Sorry for the noise.