HP pkg fails to install because it checks for os less then 12.0
expand contents of pkg into folder
pkgutil --expand HewlettPackardPrinterDrivers-10.6.0.1.1.1602826228.pkg HewlettPackardPrinterDrivers-10.6.0.1.1.1602826228
Modify distribution file:
if (system.compareVersions(system.version.ProductVersion, '12.0') > 0) {
to be 13.0 or something higher
turn folder back into pkg
pkgutil --flatten HewlettPackardPrinterDrivers-10.6.0.1.1.1602826228 HewlettPackardPrinterDrivers-10.6.0.1.1.1602826228.pkg
Edited to add a script:
Bash:
#!/bin/bash
curl -o ~/Downloads/hpdrivers.dmg https://updates.cdn-apple.com/2020/macos/001-41745-20201210-DBC9B46B-88B2-4032-87D9-449AF1D20804/HewlettPackardPrinterDrivers.dmg
hdiutil attach ~/Downloads/hpdrivers.dmg
pkgutil --expand /Volumes/HP_PrinterSupportManual/HewlettPackardPrinterDrivers.pkg ~/Downloads/hp-expand
hdiutil eject /Volumes/HP_PrinterSupportManual
sed -i '' 's/12.0/13.0/' ~/Downloads/hp-expand/Distribution
pkgutil --flatten ~/Downloads/hp-expand ~/Downloads/HP_Drivers_12.pkg
rm -R ~/Downloads/hp-expand