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# update-flake-lock
This is a GitHub Action that will update your flake.lock file whenever it is run.
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> **NOTE:** As of v3, this action will no longer automatically install Nix to the action runner. You **MUST** set up a Nix with flakes support enabled prior to running this action, or your workflow will not function as expected.
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## Example
An example GitHub Action workflow using this action would look like the following:
```yaml
name: update-flake-lock
on:
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workflow_dispatch: # allows manual triggering
schedule:
- cron: '0 0 * * *' # runs daily at 00:00
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jobs:
lockfile:
runs-on: ubuntu-latest
steps:
- name: Checkout repository
uses: actions/checkout@v2
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- name: Install Nix
uses: cachix/install-nix-action@v14
with:
install_url: https://nixos-nix-install-tests.cachix.org/serve/vij683ly7sl95nnhb67bdjjfabclr85m/install
install_options: '--tarball-url-prefix https://nixos-nix-install-tests.cachix.org/serve'
extra_nix_config: |
experimental-features = nix-command flakes
access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
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- name: Update flake.lock
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uses: DeterminateSystems/update-flake-lock@v3
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```
