# setup-uv
Set up your GitHub Actions workflow with a specific version of [uv](https://docs.astral.sh/uv/).
* Install a version of uv and add it to the path
* Cache the installed version of uv to speed up consecutive runs on self-hosted runners
* Register problem matchers for error output
* Optional: Cache the uv cache
* Optional: Verify the checksum of the downloaded uv executable
## Contents
* [Usage](#usage)
* [Install specific version](#install-specific-version)
* [Install latest version](#install-latest-version)
* [Validate checksum](#validate-checksum)
* [Enable Caching](#enable-caching)
* [Local cache path](#local-cache-path)
* [Cache dependency glob](#cache-dependency-glob)
* [API rate limit](#api-rate-limit)
* [How it works](#how-it-works)
* [FAQ](#faq)
## Usage
Example workflow in a real world project can be found [here](https://github.com/eifinger/hass-weenect/blob/main/.github/workflows/ci.yml)
### Install specific version
You can also specify a specific version of uv
```yaml
- name: Install a specific version
uses: eifinger/setup-uv@v1
with:
version: '0.3.0'
```
### Install latest version
By default this action installs the version defined as `default` in `action.yml`.
This gets automatically updated in a new release of this action when a new version of uv is released.
If you don't want to wait for a new release of this action you can use use `version: latest`.
> [!WARNING]
> Using the `latest` version means that the uv executable gets downloaded every single time instead of loaded from the tools cache.
> This can take up to 20s depending on the download speed.
> This does not affect the uv cache.
```yaml
- name: Install a specific version
uses: eifinger/setup-uv@v1
with:
version: 'latest'
```
### Validate checksum
You can also specify a checksum to validate the downloaded file.
Checksums up to the default version are automatically verified by this action.
The sha265 hashes can be found on the [releases page](https://github.com/astral-sh/uv/releases)
of the uv repo.
```yaml
- name: Install a specific version and validate the checksum
uses: eifinger/setup-uv@v1
with:
version: '0.3.1'
checksum: 'e11b01402ab645392c7ad6044db63d37e4fd1e745e015306993b07695ea5f9f8'
```
### Enable caching
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 cache dependency glob
uses: eifinger/setup-uv@v1
with:
enable-cache: true
cache-dependency-glob: 'uv.lock'
```
```yaml
- name: Define a 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: Test
run: uv run --frozen pytest
```
If you want to have a specific python version installed you can use the command [`uv python install`](https://docs.astral.sh/uv/guides/install-python/):
```yaml
- name: Install the latest version of uv
uses: eifinger/setup-uv@v1
with:
enable-cache: true
- name: Install Python 3.12
run: uv python install 3.12
```
### 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@main
- 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 }}"
```
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