If you enable caching the [uv cache](https://docs.astral.sh/uv/concepts/cache/) will
be cached to the GitHub Actions Cache. This can speed up runs which can reuse the cache
by several minutes. The cache will always be reused on self-hosted runners.
You can optionally define a custom cache key suffix.
```yaml
- name:Enable caching and define a custom cache key suffix
id:setup-uv
uses:eifinger/setup-uv@v1
with:
enable-cache:true
cache-suffix:'optional-suffix'
```
When the cache was successfully restored the output `cache-hit` will be set to `true` and you can use it in subsequent steps.
For the example above you can use it like this:
```yaml
- name:Do something if the cache was restored
if:steps.setup-uv.outputs.cache-hit == 'true'
run:echo "Cache was restored"
```
#### Local cache path
If you want to save the cache to a local path other than the default path (`/tmp/setup-uv-cache`)
you can specify the path with the `cache-local-path` input.
```yaml
- name:Define a custom uv cache path
uses:eifinger/setup-uv@v1
with:
enable-cache:true
cache-local-path:'/path/to/cache'
```
#### Cache dependency glob
If you want to control when the cache is invalidated you can specify a glob pattern with the `cache-dependency-glob` input.
The cache will be invalidated if any file matching the glob pattern changes.
The glob matches files relative to the repository root.
```yaml
- name:Define a custom cache dependency glob
uses:eifinger/setup-uv@v1
with:
enable-cache:true
cache-dependency-glob:'uv.lock'
```
```yaml
- name:Define a custom cache dependency glob
uses:eifinger/setup-uv@v1
with:
enable-cache:true
cache-dependency-glob:'**requirements*.txt'
```
### API rate limit
To avoid hitting the error `API rate limit exceeded` you can supply a GitHub token with the `github-token` input.
```yaml
- name:Install uv and supply a GitHub token
uses:eifinger/setup-uv@v1
with:
github-token:${{ secrets.GITHUB_TOKEN }}
```
## How it works
This action downloads uv from the releases of the [uv repo](https://github.com/astral-sh/uv) and uses the [GitHub Actions Toolkit](https://github.com/actions/toolkit) to cache it as a tool to speed up consecutive runs on self-hosted runners.
The installed version of uv is then added to the runner path so other steps can just use it by calling `uv`.
## FAQ
### Do I still need actions/setup-python when using this action?
No! This action was modelled as a drop-in replacement for `actions/setup-python` when using uv.
A simple example workflow could look like this:
```yaml
- name:Checkout the repository
uses:actions/checkout@main
- name:Install the latest version of uv
uses:eifinger/setup-uv@v1
with:
enable-cache:true
- name:Sync dependencies
run:uv sync
- name:Test
run:uv run pytest
```
### What is the default version?
By default this action installs the version defined as `default` in `action.yml`.
When a new release of uv is published this triggers an automatic release of this action with the new version as `default`.
If you have to know the version installed for other steps of your workflow you can use the `uv-version` output:
```yaml
- name:Checkout the repository
uses:actions/checkout@latest
- name:Install the default version of uv
id:setup-uv
uses:eifinger/setup-uv@v1
- name:Print the installed version
run:echo "Installed uv version is ${{ steps.setup-uv.outputs.uv-version }}"
