Change Details

From a new machine (or run `nix-collect-garbage` with all gcroots removed): ``` nix develop # assert that nodejs-16.3.0 came from cachix ```

Follow instructions added in D4817, to allow your user to modify substitutor behavior Then, from a new machine (or run `nix-collect-garbage` with all gcroots removed): ``` nix develop # assert that nodejs-16.3.0 came from cachix ```

Follow instructions added in D4817, to allow your user to modify substitutor behavior Then, from a new machine (or run `nix-collect-garbage` with all gcroots removed): ``` nix develop # assert that nodejs-16.3.0 came from cachix ```