Cache Nix derivations with [Attic](https://github.com/zhaofengli/attic).
## Usage
Configure your attic instance with an endpoint, a cache, and a token that can read from and write to the cache. Then, add this step to a workflow job after Nix is installed:
```yaml
- name: Setup Attic cache
uses: ryanccn/attic-action@v0
with:
endpoint: ${{ secrets.ATTIC_ENDPOINT }}
cache: ${{ secrets.ATTIC_CACHE }}
token: ${{ secrets.ATTIC_TOKEN }}
```
## Inputs
### `endpoint`
The Attic endpoint. This is the URL without the cache name.
### `cache`
The name of the Attic cache.
### `token`
The authorization token to provide to Attic (**optional**).
### `skip-push`
Disable pushing new derivations to the cache automatically at the end of the job (**default is false**).
This requires you to invoke `attic push <cache>` with the paths you want to push to the cache manually.
