notes:
manjaro: i don't have Papirus thème (ok view papirus-maia-icon-theme in PKGBUILD)
archlinux: not /Papirus/ but /papirus/ (papirus-icon-theme-kde) ??
for me, for view icons, i have add a parameter "theme" in python script (def addSoftware)
With my arch, script break for set app icon (/usr/share/icons/manjaro/maia/48x48.png) I have make one except for use this script if icon not exist