[FEAT.] : Support Steam installed via flatpak

[salva09]

Problem

Right now the BSManager flatpak only supports Steam installed via the native package manager, it would be great if it could support Steam flatpak, especially for immutable systems where the main method of installing apps is via flatpak

Solution

Add necessary permissions in the BSManager flatpak manifest to detect proton in the steam flatpak directory, and even trying to add those permissions via flatseal, trying to launch a game results in a crash after the Beat Saber logo

Alternative Solution

No response

Operating System

None

Additional Context

No response

[silentrald]

@salva09 Can you send your BSManager logs, what version of BSManager, and what distro are you using.
Open BSManager -> Go to settings -> Scroll down -> Open Logs

[salva09]

This are the logs when I try to run an instance of beat saber, I was using BSManager 1.5.2 in opensuse aeon, I have the same results on fedora silverblue
`[2025-02-22 16:57:14.901] [info] Linux exec command

flatpak-spawn --host ps awwxo pid,args | grep "[s]team-runtime-launcher-service"
[2025-02-22 16:57:14.980] [error] Error while checking if Steam is running as admin Error: Unable to build process from pid: File not found: /proc/5439
at m.isElevated (/app/lib/io.bsmanager.bsmanager/resources/app.asar/dist/main/main.js:14:1226980)
[2025-02-22 16:57:14.984] [info] Launch version {
version: {
BSVersion: '1.40.2',
BSManifest: '5496832903170665287',
OculusBinaryId: '8626990240734012',
ReleaseURL: 'https://steamcommunity.com/games/620980/announcements/detail/510697606000673692',
ReleaseImg: 'https://clan.fastly.steamstatic.com/images/32055887/04ad25256ffc2686f4ea19830e70df6b2752f728.png',
ReleaseDate: '1738951837',
year: '2025',
path: '/home/salva/BSManager/BSInstances/1.40.2',
ino: 371542,
metadata: { id: '622dd34b-006c-487e-ad91-13763bce0ffb', store: 'steam' }
},
launchMods: [ 'skip_steam' ],
command: 'PRESSURE_VESSEL_FILESYSTEMS_RW=$XDG_RUNTIME_DIR/wivrn/comp_ipc %command%',
admin: false
}
[2025-02-22 16:57:15.051] [info] Parsing env string "PRESSURE_VESSEL_FILESYSTEMS_RW=$XDG_RUNTIME_DIR/wivrn/comp_ipc "
[2025-02-22 16:57:15.051] [info] Injecting PRESSURE_VESSEL_FILESYSTEMS_RW="$XDG_RUNTIME_DIR/wivrn/comp_ipc" to the env launch command
[2025-02-22 16:57:15.051] [info] Linux spawn command
flatpak-spawn --host --env=SteamAppId="620980" --env=SteamOverlayGameId="620980" --env=SteamGameId="620980" --env=WINEDLLOVERRIDES="winhttp=n,b" --env=STEAM_COMPAT_DATA_PATH="/home/salva/BSManager/SharedContent/compatdata" --env=STEAM_COMPAT_INSTALL_PATH="/home/salva/BSManager/BSInstances/1.40.2" --env=STEAM_COMPAT_CLIENT_INSTALL_PATH="/home/salva/.steam/steam" --env=STEAM_COMPAT_APP_ID="620980" --env=SteamEnv="1" "/home/salva/.var/app/com.valvesoftware.Steam/data/Steam/steamapps/common/Proton Hotfix/proton" run "/home/salva/BSManager/BSInstances/1.40.2/Beat Saber.exe" --no-yeet
[2025-02-22 16:57:20.344] [info] BS process exit with code 0
[2025-02-22 16:57:20.345] [info] BS process exit code 0`

[silentrald]

@salva09 can you try running the rpm build if you get the same issue.