Firmament (754890)

Compatibility Report

• Name of the game with compatibility issues: Firmament
• Steam AppID of the game: 754890

System Information

• GPU: AMD Radeon RX 580 Series
• Driver/LLVM version: polaris10, LLVM 15.0.7, DRM 3.52, 6.4.1-arch1-1 / Driver Version: 4.6 (Compatibility Profile) Mesa 23.1.3
• Kernel version: 6.4.1-arch1-1
• Link to full system information report as Gist:https://gist.github.com/eyeonus/42f4e7a3b6c6971ade623dda40149632
• Proton version: Tested with default "Experimental" version and with 8.0-2

I confirm:

• that I haven't found an existing compatibility report for this game.
• [ x] that I have checked whether there are updates for my system available.

Symptoms

Does not launch. The Steam "Play" button changes to a blue "Cancel" button for a few seconds, then to a "Stop" button, then back to the green "Play" button with no other visible events happening.

I launched Steam via commandline so I could grab the stdout from the attempted launch:
https://gist.github.com/eyeonus/1246bfc3ac5c9c81fdc5bcc9ab8197c7

Reproduction

Run Steam on an Arch Linux box. Press the "Play" button for Firmament.

steam-754890.log

No source file or test is named. Start by reading steam-754890.log and the linked Steam stdout and system-information reports, then reproduce the launch failure on the reported Arch Linux setup; done would mean identifying and resolving the cause so Firmament launches.