Merge pull request #73 from DamienCassou/add-binary-cache-doc
Add FAQ section "How do I add a binary cache?" to README
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README.md
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README.md
@ -78,19 +78,21 @@ To install Nix from any commit, go to [the corresponding installer_test action](
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### How do I print nixpkgs version I have configured?
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```nix-instantiate --eval -E '(import <nixpkgs> {}).lib.version'```
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```yaml
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- name: Print nixpkgs version
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run: nix-instantiate --eval -E '(import <nixpkgs> {}).lib.version'
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```
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### How can I run NixOS tests?
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With the following inputs:
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```yaml
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- uses: cachix/install-nix-action@vXX
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with:
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extra_nix_config: "system-features = nixos-test benchmark big-parallel kvm"
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- uses: cachix/install-nix-action@vXX
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with:
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extra_nix_config: "system-features = nixos-test benchmark big-parallel kvm"
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```
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[Note that there's no hardware acceleration on GitHub Actions.](https://github.com/actions/virtual-environments/issues/183#issuecomment-610723516).
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### How can I install packages via nix-env from the specified `nix_path`?
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@ -99,6 +101,31 @@ With the following inputs:
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nix-env -i mypackage -f '<nixpkgs>'
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```
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### How do I add a binary cache?
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If the binary cache you want to add is hosted on [Cachix](https://cachix.org/) and you are
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using [cachix-action](https://github.com/cachix/cachix-action), you
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should use their `extraPullNames` input like this:
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```yaml
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- uses: cachix/cachix-action@vXX
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with:
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name: mycache
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authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
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extraPullNames: nix-community
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```
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Otherwise, you can add any binary cache to nix.conf using
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install-nix-action's own `extra_nix_config` input:
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```yaml
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- uses: cachix/install-nix-action@vXX
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with:
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extra_nix_config: |
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trusted-public-keys = hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
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substituters = https://hydra.iohk.io https://cache.nixos.org/
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```
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## Hacking
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Install the dependencies
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