Cannot install Stratagus

[Fandi]

Hello,

I'm a first time user.
I would like to build a Retropie, but for some reason I cannot install the Stratagus port.
It is Red in my Optional packages list (bad omen, I know), and when I try to install it, I get:
"Sorry but package 'stratagus' is not available for your system (rpi4)
Package flags: !mali !kms"

I guess this means that Stratagus cannot be installed on an Rpi4B, right?
Can someone verify it? (And maybe tell me why?)

Pi Model: Pi4B
Power Supply used: Official
RetroPie Version Used: 4.8
Built From: RetroPie image via Raspberry Pi Imager
USB Devices connected: Xbox 360 wireless dongle
Controller used: Wireless XBox 360 controller, Logitech K380 bluetooth keyboard
Error messages received:
Verbose log (if relevant):
Guide used: https://retropie.org.uk/docs/Stratagus/
File:
Emulator: Stratagus (port, not emulator)
Attachment of config files:
How to replicate the problem: Try to install Stratagus

Thanks in advance
Fandi

[sleve_mcdichael]

@Fandi that's correct. The incompatibility is due to the kms flag. The exclamation mark ! is a negation symbol, so that package's flags !mali !kms means "not mali and not kms." Your Pi 4 is "kms" so is not compatible:

Your rpi4 flags: rpi4 32bit arm armv8 neon rpi gles gles3 gles31 mesa kms dispmanx

[Fandi]

@sleve_mcdichael Thank you!
In this case I will skip it this time.
Hopefully a Stratagus update will solve it.

(4 years as a math major, and I couldn't recognize the negation symbol. Well, it was a long time ago, but anyway, shame on me!) :)