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README: Small cleanup

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Damien Cassou 2021-04-13 18:47:42 +02:00
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@ -78,19 +78,21 @@ To install Nix from any commit, go to [the corresponding installer_test action](
### How do I print nixpkgs version I have configured?
```nix-instantiate --eval -E '(import <nixpkgs> {}).lib.version'```
```yaml
- name: Print nixpkgs version
run: nix-instantiate --eval -E '(import <nixpkgs> {}).lib.version'
```
### How can I run NixOS tests?
With the following inputs:
```yaml
- uses: cachix/install-nix-action@vXX
with:
extra_nix_config: "system-features = nixos-test benchmark big-parallel kvm"
- uses: cachix/install-nix-action@vXX
with:
extra_nix_config: "system-features = nixos-test benchmark big-parallel kvm"
```
[Note that there's no hardware acceleration on GitHub Actions.](https://github.com/actions/virtual-environments/issues/183#issuecomment-610723516).
### How can I install packages via nix-env from the specified `nix_path`?