stop mangling: rule="s/.+\/(\d\S*)\.tar\.gz/python-promise-$1.tar.gz/ uversionmangle=s/(\d)[_\.\-\+]?((RC|rc|pre|dev|beta|alpha)\.?\d*)$/$1~$2/" rule doesn't match "(s|tr|y)/.*/.*/[a-z]*" (or similar).
Among the 5 debian patches available in version 2.3.0-4 of the package, we noticed the following issues: