# Woodpecker plugin: nix-attic

This Woodpecker CI plugin is to build and cache nix derivations using the binary cache
[attic](https://github.com/zhaofengli/attic). The image is based on NixOS.

## Features

- nix experimental features enabled by default: commands and flakes
- preinstalled [attic-client](https://github.com/zhaofengli/attic)

## Usage

See [docs.md](docs.md).

## How to build the image locally?

### On Linux

```bash
$ nix build
$ docker load -i result
```

### On macOS

The easiest way to build the image is using a previously built version of the image:

```bash
$ echo << EOF >> cmd.txt
nix build
nix-env -iA nixpkgs.docker-client
docker load -i result
EOF
$ docker run -it                                                                   \
  -e PLUGIN_BINARY_CACHE=https://some-binary-cache.example.com                     \
  -e PLUGIN_BINARY_CACHE_PUBLIC_KEY=some-binary-cache.example.com:some-public-keyi \
  -e PLUGIN_BINARY_CACHE_TOKEN=$ACCESS_TOKEN                                       \
  -e PLUGIN_SCRIPT="$(cat cmd.txt)"                                                \
  -v $(pwd):/opt/plugin                                                            \
  -w /opt/plugin                                                                   \
  -v /var/run/docker.sock:/var/run/docker.sock                                     \
  git.vdx.hu/voidcontext/woodpecker-plugin-nix-attic:0.1.0
```