nsenter: failed to parse pid: '-p' about nixos-wsl HOT 10 CLOSED

There is no /bin/mount in the installer. That leads to /mnt/* not being mounted, which in turn means that WSL can't cd to the current working directory (so it defaults to /root). For now you should be able to fix this by running wsl -t NixOS to restart the distribution once.
Could you open a separate issue for this? So that it gets addressed in a future release

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Will do. Thanks!

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I got around this by touching the systemd.pid file.

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I can reproduce this @nzbr using nixos-wsl-installer.tar.gz

Using nixos-wsl-installer-fixed.tar.gz Works, can you try the fixed release @michas2 please?

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Now it starts fine. Thanks! :)

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When running a second time I get this:

> wsl -d NixOS
/bin/sh: line 1: cd: /root: Permission denied

Any idea where this comes from?

(At least afterwards I get a seemingly working prompt.)

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What is the host-path that you ran wsl in?
In my experience, this happens, when WSL does not know which directory to start the shell in. Because the default user is set to root, it defaults to /root. Syschdemd then drops to the default user, who has no read permission on /root - thus resulting in that error. sh notices this and changes to the current users home (/home/nixos if you didn't change the username)

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I simply ran it as described above:

wsl --import NixOS .\NixOS\ .\Downloads\nixos-wsl-installer-fixed.tar.gz --version 2
wsl -d NixOS

I ran it in powershell in my (default) user directory.

(I also noticed that /mnt/c/ is not mounted. not sure if that is on purpose or maybe a result of the failing command.)

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BTW, after that error, the shell runs as user nixos in /home/nixos afterwards.

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This issue has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/nixos-wsl-2-error-with-22-05-5c211b47-nsenter-failed-to-parse-pid-p/24238/1

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