MarsSeed [1] filed a deletion request for python-pkgconfig-1.1.0 [2]: I recommend deleting this legacy package from 2019, as nothing depends on it any longer, and it conflicts with repo's python-pkgconfig.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python-pkgconfig-1.1.0/
