rpm-ostree compose tree fails to add custom package

[ab78908]

When I install a package on client side it succeeds:

rpm-ostree install pylon-6.1.1.19861-1.x86_64.rpm

$ rpm-ostree status
State: idle
Deployments:
● testremote:fedora/rawhide/x86_64/silverblue
Version: 38 (2022-11-22T23:02:08Z)
BaseCommit: c0dbc242ae8124af3d8879d2383c9d0350c1283ce151ef864c3d344983036bab
LocalPackages: pylon-6.1.1.19861-1.x86_64

But when I'm trying to add the same package to and image build, the build fails:

sudo rpm-ostree compose tree --repo=repo --cachedir=cache --unified-core fedora-silverblue-extra.yaml
....
Running posttrans scripts... 50 done
Writing rpmdb... done
error: Writing rpmdb: Error running transaction: file / conflicts between attempted installs of pylon-6.1.1.19861-1.x86_64 and filesystem-3.18-2.fc37.x86_64

[ab78908]

I guess it is another flavor of #4165
The RPM package .spec file (generated by alien) had entries like
%dir "/"
%dir "/opt/"
%dir "/etc/"
the first one causing issues with rpm-ostree compose tree command shown above,
while the later two were causing issues with rpm-ostree install command
after these lines were removed from the .spec file rpm-ostree works fine.

[lucab]

Thanks for the report. Yes this is what I was mentioning in the other ticket:

I'm not sure if shipping /etc directly in the package will result in a file conflict with other packages down the road [...]

I'm not aware of a way to fix this, other than tweaking the specfile. I'm surprised this works slightly differing when installing client-side, though.