Enabling envfs breaks GUI applications (wslg)

[Tarow]

After enabling services.envfs.enable and restarting the system, GUI applications do not start for me anymore.
I particularly noticed this with IntelliJ. Upon start i will now get an error:

**Start Failed**

Failed to initialize graphics environment.

java.awt.AWTError: Can't connect to the Wayland server
        at java.desktop/sun.awt.wl.WLDisplay.<init>(WLDisplay.java:39)
        at java.desktop/sun.awt.wl.WLDisplay.<clinit>(WLDisplay.java:32)
        at java.desktop/sun.awt.wl.WLToolkit.<clinit>(WLToolkit.java:168)
        at java.desktop/sun.awt.PlatformGraphicsInfo.createToolkit(PlatformGraphicsInfo.java:75)
        at java.desktop/java.awt.Toolkit.getDefaultToolkit(Toolkit.java:595)
        at com.intellij.platform.ide.bootstrap.UiKt$initAwtToolkit$2.invokeSuspend(ui.kt:139)
        at com.intellij.platform.ide.bootstrap.UiKt$initAwtToolkit$2.invoke(ui.kt)
        at com.intellij.platform.ide.bootstrap.UiKt$initAwtToolkit$2.invoke(ui.kt)
        at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:62)
        at kotlinx.coroutines.BuildersKt__Builders_commonKt.withContext(Builders.common.kt:163)
        at kotlinx.coroutines.BuildersKt.withContext(Unknown Source)

I assume this might be somehow related to the /bin directory not being populated anymore: https://github.com/nix-community/NixOS-WSL/blob/main/modules/wsl-distro.nix#L199

When disabling services.envfs.enable, IntelliJ starts up fine again.

It also seems to depend on the VM options passed to Intelli.
This will work fine:

NIXPKGS_ALLOW_UNFREE=1 nix run --impure nixpkgs#jetbrains.idea-community

This will fail with the error above:

JAVA_TOOL_OPTIONS=-Dawt.toolkit.name=WLToolkit NIXPKGS_ALLOW_UNFREE=1 nix run --impure nixpkgs#jetbrains.idea-community

Does someone have an idea, what might cause this behavior and how it can be fixed?

[SuperSandro2000]

envfs breaks all kinds of things in my experience. I still have this comment in my code from when I tested it way back:

services.envfs = {
  # breaks mounting of /mnt/c at startup
  # enable = true;
  # https://gthub.com/nix-community/NixOS-WSL/blob/main/modules/wsl-distro.nix#L102-L105
  extraFallbackPathCommands = /* bash */ ''
    ln -sf /init $out/wslpath
    ln -sf ${lib.getExe config.wsl.binShPkg} $out/sh
    ln -sf ${pkgs.shadow}/bin/login $out/login
    ln -sf ${pkgs.util-linux}/bin/mount $out/mount
  '';
};

saying that I cannot recommend it unless you are into bug hunting.

[Tarow]

Thanks a lot, doesn't seem too easy to fix then.
Basically i just need /bin/bash available due to my company refusing to change shebangs to /usr/bin/env.

Guess ill ditch envfs for now then and continue symlinking /bin/bash during activation.

[SuperSandro2000]

/bin/bash is not only not compatible on NixOS but also on *BSD and MacOS. 😅