Package request: umu-launcher

[2goodAP]

Project description

Previously known as ULWGL (Unified Linux Wine Game Launcher), umu-launcher aims launch any Windows game using the Steam runtime.

This is a unified launcher for windows games on linux. It is essentially a copy of the Steam Linux Runtime/Steam Runtime Tools (https://gitlab.steamos.cloud/steamrt/steam-runtime-tools) that Valve uses for proton, with some modifications made so that it can be used outside of Steam.

This seems similar to steam-run from my understanding, in that the creators want it running underneath a launcher (Lutris/Heroic) while still being usable standalone. I have tried using it under steam-run and it seems to run games that crash when simply using proton-ge under steam-run on top of being nice and minimalistic for launching games from the command line.

Would this be packageable or would we simply need to run it using steam-run? The repo presents this as a standalone launcher--capable of launching games even without steam--so a standalone package seems viable.

When you use umu-run to run a game, it uses the specified WINEPREFIX, proton version, executable, and arguements passed to it to run the game in proton, inside steam's runtime container JUST like if you were running the game through Steam, except now you're no longer limited to Steam's game library or forced to add the game to Steam's library, in fact, you don't even have to have steam installed.

Metadata

• homepage URL: https://github.com/Open-Wine-Components/umu-launcher
• source URL: https://github.com/Open-Wine-Components/umu-launcher
• license: GPL-3.0
• platforms: Linux

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[Amanse]

steam-run would not be required but a FHS environment will be required, like Lutris, Bottles and heroic have implemented and even the official nix package from umu

[RC-14]

Don't know if no one noticed yet but they provide a flake in their repo: https://github.com/Open-Wine-Components/umu-launcher/blob/main/packaging/nix/flake.nix

[MattSturgeon]

cc upstream flake maintainer: @beh-10257

[2goodAP]

Hey guys. Thank you all for your work on this. However, I was still encountering issues while running two of my games: one complained about the DirectX driver not being initializable and the other about the OpenGL driver having the wrong ELF class.

I looked into it a bit further, specifically I looked at the steam FHS env and iteratively added a few elements from it into umu-launcher's FHS env, and I found that adding most of the profile section from steam's FHS env seems to solve these issues.

profile = ''
  # prevents log spam from SteamRT GTK trying to load host GIO modules
  unset GIO_EXTRA_MODULES

  # udev event notifications don't work reliably inside containers.
  # SDL2 already tries to automatically detect flatpak and pressure-vessel
  # and falls back to inotify-based discovery [1]. We make SDL2 do the
  # same by telling it explicitly.
  #
  # [1] <https://github.com/libsdl-org/SDL/commit/8e2746cfb6e1f1a1da5088241a1440fd2535e321>
  export SDL_JOYSTICK_DISABLE_UDEV=1

  # This is needed for IME (e.g. iBus, fcitx5) to function correctly on non-CJK locales
  # https://github.com/ValveSoftware/steam-for-linux/issues/781#issuecomment-2004757379
  export GTK_IM_MODULE='xim'

  # See https://gitlab.steamos.cloud/steamrt/steam-runtime-tools/-/blob/main/docs/distro-assumptions.md#graphics-driver
  export LIBGL_DRIVERS_PATH=/run/opengl-driver/lib/dri:/run/opengl-driver-32/lib/dri
  export __EGL_VENDOR_LIBRARY_DIRS=/run/opengl-driver/share/glvnd/egl_vendor.d:/run/opengl-driver-32/share/glvnd/egl_vendor.d
  export LIBVA_DRIVERS_PATH=/run/opengl-driver/lib/dri:/run/opengl-driver-32/lib/dri
  export VDPAU_DRIVER_PATH=/run/opengl-driver/lib/vdpau:/run/opengl-driver-32/lib/vdpau
''

I'm pretty sure the essential bits here are just the *_DRIVERS_PATH and __EGL_VENDOR_LIBRARY_DIRS variables but I've found that adding the unset GIO_EXTRA_MODULES reduces log spam about dconf (exactly as indicated by the comment) and export SDL_JOYSTICK_DISABLE_UDEV=1 helps with one of my games not launching while the gamepad is plugged in. I'm not sure what export GTK_IM_MODULE='xim' does, though.

[MattSturgeon]

@2goodAP thanks for reporting. I've opened #381047 that should hopefully address this. It'd be great if you could test that out and/or review.