Flatsonar

ProtonShift

by I4cTime

Configure Proton, gamescope, MangoHud and your Steam library

Dangerous permissions Verified creator AGPL-3.0-or-later v1.1.1
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Screenshot 1 of ProtonShift Screenshot 2 of ProtonShift Screenshot 3 of ProtonShift

About

ProtonShift is a native Linux tool for setting up and tuning your games. It discovers your Steam (and Heroic/Lutris) library and gives you a clean UI for the things that usually mean editing config files by hand: - Build gamescope launch commands (resolution, FSR, HDR, frame limits) - Manage MangoHud overlays - Wrap games with ScopeBuddy - Inspect Proton prefixes and per-game settings Built with Qt Quick and Python. Runs well on the desktop and on the Steam Deck in Desktop Mode.

Permissions

3 permissions weaken the sandbox. Flatsonar asks before installing.

  • all devices (/dev): webcams, disks, raw hardware
    --device=all
  • sandbox escape: can run commands on the host via flatpak-spawn
    --talk-name=org.freedesktop.Flatpak
  • read-only access to your home folder
    --filesystem=home:ro
  • inter-process communication (needed for X11)
    --share=ipc
  • Wayland display
    --socket=wayland
  • X11 display, only when Wayland is unavailable
    --socket=fallback-x11
  • GPU acceleration
    --device=dri
  • access to ~/.config/protonshift
    --filesystem=~/.config/protonshift:create
  • access to ~/.config/scopebuddy
    --filesystem=~/.config/scopebuddy:create
  • access to ~/.config/MangoHud
    --filesystem=~/.config/MangoHud:create
  • access to ~/.config/environment.d
    --filesystem=~/.config/environment.d:create
  • access to ~/ProtonShift Restores
    --filesystem=~/ProtonShift Restores:create
  • access to ~/.steam
    --filesystem=~/.steam
  • access to ~/.local/share/Steam
    --filesystem=~/.local/share/Steam
  • access to ~/.var/app/com.valvesoftware.Steam
    --filesystem=~/.var/app/com.valvesoftware.Steam
  • access to ~/.config/heroic
    --filesystem=~/.config/heroic
  • access to ~/.var/app/com.heroicgameslauncher.hgl
    --filesystem=~/.var/app/com.heroicgameslauncher.hgl

Who publishes this

The creator demonstrably controls this app id: Flathub verification, the hosting account owns the namespace, or a well-known file on their domain.

  • https://github.com/I4cTime/flatpak.i4c.studio also publishes this app id
    publisher:collision
  • the build has network access: it can download things the manifest does not list
    protonshift:build-options:--share=network
  • fetches from the network during the build (nothing to audit beforehand): pip3 install --prefix=${FLATPAK_DEST} --no-warn-script-location PySide6 vdf .
    protonshift:build-commands
  • hosted by github.com/i4ctime, which owns the io.github namespace of io.github.i4ctime.protonshift
    publisher:namespace

Maintenance

Recent activity on the upstream repository, or built and reviewed by Flathub.

No staleness signals: recent activity, or built and reviewed by Flathub.