Installation of Ventura package fails

[DavidK-M]

The Installation Failed

The installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance.

I'm running macOS Ventura 13.1 (22C65)

Reason for upgrade is this message from "port" command:

Error: Current platform "darwin 22" does not match expected platform "darwin 21"
Error: If you upgraded your OS, please follow the migration instructions: https://trac.macports.org/wiki/Migration
OS platform mismatch
    while executing
"mportinit ui_options global_options global_variations"
Error: /opt/local/bin/port: Failed to initialize MacPorts, OS platform mismatch

[ryandesign (Ryan Carsten Schmidt)]

Without more information, I can't imagine why this might be happening. Does the installer log show anything useful?

[kencu (Ken)]

I believe this happens if you try to install the wrong MacPorts package installer, eg in this case, the Monterey installer on a Ventura system.

[ryandesign (Ryan Carsten Schmidt)]

Ken, the error message

Error: Current platform "darwin 22" does not match expected platform "darwin 21"

would occur if you attempt to use a MacPorts installation intended for Darwin 21 (Monterey) on Darwin 22 (Ventura). For example, this would occur if you install MacPorts for Monterey while running Monterey and then upgrade to Ventura. The solution would be to download MacPorts for Ventura and install it.

But it should not be possible to install MacPorts for Monterey on Ventura. The installer should show an intelligible error in that case. For example, it should display a message "This package is meant to be installed on macOS 12.0." and when that message is dismissed the installer window should close. It should not be possible to attempt a MacPorts installation that is for the wrong OS version.

Regarding the error message

The Installation Failed

The installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance.

I can't explain that and would need to see the installer log.

[ryandesign (Ryan Carsten Schmidt)]

Another user has reported this in #66752.

[ryandesign (Ryan Carsten Schmidt)]

I left some suggestions in comment:ticket:66752:4.