CachyOS Apps

Install umu-launcher on CachyOS

This is the Unified Launcher for Windows Games on Linux, to run Proton with fixes outside of Steam.

From the official CachyOS repo. Install with pacman, no AUR helper needed.

Reviewed Nov 2, 2026 · independent guide · Read the umu-launcher guide

How do I install umu-launcher on CachyOS?

Run this in a terminal:

sudo pacman -S umu-launcher

umu-launcher is in the cachyos repo, the CachyOS project's own package repository, so pacman installs it directly with no AUR helper and no build script. The package is signed with the CachyOS repository key, and pacman checks the signature before it installs.

What should I do after installing umu-launcher?

  1. Run umu-run in a terminal.
  2. Run pacman -Qi umu-launcher to see the installed version and the optional dependencies.

Full umu-launcher guide: first run, key settings, common fixes and uninstall

How do I update or remove umu-launcher?

Update:

sudo pacman -Syu

Remove:

sudo pacman -Rns umu-launcher

What is umu-launcher?

Unified launcher for Windows games on Linux.

Package description: This is the Unified Launcher for Windows Games on Linux, to run Proton with fixes outside of Steam

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    From GitHub

    Open-Wine-Components/umu-launcher · ★ 3,813 stars · last commit Oct 31, 2026 · latest release Jul 25, 2026

    Real issues opened by users on the project's GitHub, shown as written with a link to each one. 10 most reacted issues opened in the last two years plus the 5 newest issues, bots, pull requests, non English and political posts skipped, capped at 15 per repo. Fetched Nov 1, 2026.

    1. Provide options to sandbox the executable run by umu-runClosed

      As pressure-vessel is already using bwrap internally it would be awesome to use it to prevent games from accessing files outside of the WINEPREFIX that are not needed to run the game or disable internet access. This was already mentioned in #130 but as this issue is about another…

      @Jerry1098 · · 9 reactions · 7 comments · View on GitHub

    2. Possible to package umu as a flatpak dependency/module?Open

      I'm packaging the Forged Alliance Forever client in flatpak and got it working pretty quickly, but the matter of actually running the game is another topic. Having the program open but unable to run the game is no fun. We want to leverage umu's already enormous amount of work to…

      @p4block · · 7 reactions · 2 comments · View on GitHub

    3. Problems with poor internet connection and bad UXOpen

      If your internet connection is poor, you may experience problems downloading the runtime. Details: If you launch umu using a GUI launcher like Faugus-launcher, the problem becomes completely invisible to the user. I reported this bug, and upstream reasonably responded that they…

      @tim77 · · 6 reactions · 0 comments · View on GitHub

    4. Nix flake failing to build due to hatch test failureClosed

      I'm not sure if this belongs here or not. I ran a nix flake update today, followed by a rebuild, and started seeing this error: Here is a link to the nix log output. Relevant config:

      @rykugur · · 4 reactions · 15 comments · View on GitHub

    5. umu-launcher does not use network proxyClosed

      see title. curl output.

      @recreators01 · · 3 reactions · 4 comments · View on GitHub

    6. Publish on flathubOpen

      It looks like umu-launcher already has a Flatpak manifest, but it's not on Flathub yet. Any plans on publishing umu-launcher to Flathub in the future?

      @musjj · · 2 reactions · 1 comments · View on GitHub

    7. How to run multiple applicaitons in the same pressure-vessel?Open

      How to run an application in the same pressure-vessel? Without it, second application cannot access memory of the first application. They do run in the same prefix.

      @puyebu · · 2 reactions · 12 comments · View on GitHub

    8. Feature request: provide package files directly, not as zip filesClosed

      I noticed that for the last couple releases the various distribution packages have come zipped up instead of the “naked” packages being attached to the release. I’m assuming there is a reason for it, but running dnf install is way more convenient than downloading an archive,…

      @alterNERDtive · · 2 reactions · 4 comments · View on GitHub

    9. [Suggestion] Store UMU-Proton where Steam wouldn't touch itOpen

      When using umu, it downloads UMU-Proton in /.local/share/Steam/compatibilitytools.d/. I had a "Wine Mono Installer" popup when I launched Steam today. I found it odd since I hadn't launched any games. I checked the process list and found that Steam was doing something with…

      @qnxt · · 2 reactions · 7 comments · View on GitHub

    10. Inconsintencies in wine file placementClosed

      After extraction the downloaded wine files are placed into $HOME/.local/share/Steam/compatibilitytools.d. This makes sense so that Steam can pick those up and also use those as compatibility layers. However, Steam itself places itself into $XDGDATAHOME/Steam and has no idea of…

      @Lucki · · 2 reactions · 1 comments · View on GitHub

    11. umu-shim cannot be executed when ~/.local/share/umu is a symlink to another driveOpen

      When $HOME/.local/share/umu is a symlink to a directory outside $HOME (for example, umu's data moved to a games drive), every launch fails before Proton starts: The shim exists on the host. Inside the pressure-vessel container, $HOME is shared, so the symlink /.local/share/umu is…

      @HackingGate · · 1 comments · View on GitHub

    12. Make the config use/resolve ~ by defaultClosed

      I store my dotfiles on a git repo, and keep them username independant. in /.config/protonfixes/config.ini the cache path is like instead let it be Related issue:

      @Twig6943 · · 0 comments · View on GitHub

    13. Plain wine supportOpen

      This would allow setting global stuff like and also allow installscripts/fixes to be run with wine Idea I have is to maybe have it so that it looks if WINEPATH or something similar is set just like PROTONPATH. Making it so that PROTONPATH is prioritized would be cool. Or it could…

      @Twig6943 · · 5 comments · View on GitHub

    14. Doesn't work with age of empires 4 IVOpen

      I'm trying to launch age of empires iv but itt doesn't somehow work. It says that it should be launched through steam constantly whatever way I try.

      @azizsayfiddin · · 0 comments · View on GitHub

    15. UMU breaking proton installation filesClosed

      After few runs games stop to work and next run causing games to eating all available RAM. I dig into that and found out that my GE-Proton-11 pefix is changed. I suspect UMU so I add PROTONFIXESDISABLE=1 and have no issues since then. Could you confirm that UMU doing it? Following…

      @axet · · 13 comments · View on GitHub

    umu-launcher on CachyOS: questions

    Is umu-launcher in the official CachyOS repo?

    Yes. The umu-launcher package is in the cachyos repo, version 1.4.3-1, built 2026-07-24. Install it with sudo pacman -S umu-launcher.

    Do I need an AUR helper for umu-launcher?

    No. It comes from the cachyos repo, so plain pacman installs and updates it, and sudo pacman -Syu keeps it current.

    What is the umu-launcher command?

    umu-run. The package is called umu-launcher.