MarsSeed [1] filed a deletion request for imposm-parser-git [2]: Marked as deprecated on GitHub; development halted since 2017. Broken because of missing and binary-incompatible Python 2 dependencies (the latter is true to python2-protobuf).
I suggest to delete this. No dependents, so dropping it does not break other things. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/imposm-parser-git/
