Overview

Here’s a short one! Ever run into the following with Nix?

error: experimental Nix feature 'nix-command' is disabled; add '--extra-experimental-features nix-command' to enable it

Let’s talk about it

Flakes are experimental?

So flakes are experimental? Yes, in Nix flakes are still gated as experimental. Want to get around it quickly?

nix --extra-experimental-features 'nix-command flakes' flake check

For a longer term ease of use you are better off just enabling this permanently:

mkdir -p ~/.config/nix && \
  echo 'experimental-features = nix-command flakes' >> ~/.config/nix/nix.conf