update-flake-lock/README.md
Cole Helbling 64a8cc193d Remove automatic Nix installation
There is currently no (easy) way to only enable a certain composite
action step when some input is set, so just don't automatically install
Nix at all.
2021-10-26 09:22:51 -07:00

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# update-flake-lock
This is a GitHub Action that will update your flake.lock file whenever it is run.
> **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.
## Example
An example GitHub Action workflow using this action would look like the following:
```yaml
name: update-flake-lock
on:
workflow_dispatch: # allows manual triggering
schedule:
- cron: '0 0 * * *' # runs daily at 00:00
jobs:
lockfile:
runs-on: ubuntu-latest
steps:
- name: Checkout repository
uses: actions/checkout@v2
- 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 }}
- name: Update flake.lock
uses: DeterminateSystems/update-flake-lock@v3
```