NixOS

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NixOS is a Linux distribution built on top of the Nix package manager. Its declarative configuration allows reliable system upgrades via several official channels of stability and size.

This community discusses NixOS, Nix, and everything related.

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What's that thing with --extra-experimental-features? (discuss.tchncs.de)

submitted 6 months ago by silmaril@discuss.tchncs.de to c/nixos@infosec.pub

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So I tried to follow some tutorial about flakes, but it seems these are extra-experimental still.

I am using NixOS 23.11 with Nix 2.18.1 in a VM (those are the most recent stable versions, right?).

Trying around I already found out that instead of eg. nix flake update I have to use --extra-experimental-features two times to get this simple command:

nix --extra-experimental-features nix-command --extra-experimental-features flakes flake update

Searching the web I found several different things that people put into their /etc/nixos/configuration.nix to enable this globally, but none of those worked for me. I assume there is still a way to do this - can someone please tell me the correct syntax for Nix 2.18.1?

What makes things worse is that I cannot start playing around with home-manager and flakes, because home-manager switch flake . seems to use nix flake internally, which leads to errors instead of results.

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[–] silmaril@discuss.tchncs.de 2 points 6 months ago

Yes! That's the correct way to write this, thank you! 😊

And it's already set inside /etc/nixos/hardware-configuration.nix after installing inside a VM.

I had an additional layer 8 problem - clipboard sharing doesn't work until it's enabled in the VirtualBox host , too 🙃