packaging: introduce Python3 support as buildrpm --python3
Just overrule the HGPYTHON3 warning.
Set up $ hg init repo $ cd repoTry to import an empty patch $ hg import --no-commit - <<EOF > EOF applying patch from stdin abort: stdin: no diffs found [255]No dirstate backups are left behind $ ls .hg/dirstate* | sort .hg/dirstate