Add support for setup-pixi

.gitattributes

@@ -0,0 +1,3 @@
+# GitHub syntax highlighting
+pixi.lock linguist-language=YAML
+

.github/workflows/run-tests.yml

@@ -61,3 +61,18 @@ jobs:
             pytest-md
             pytest-emoji
       - uses: ./.
+
+  test-pixi:
+    name: Run tests (setup-pixi)
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up micromamba environment
+        uses: prefix-dev/[email protected]
+      - uses: ./.
+        with:
+          custom-pytest: pixi run pytest

.gitignore

@@ -4,3 +4,4 @@
 **/.pytest_cache/
 venv/
 .idea/
+.pixi

README.md

@@ -47,12 +47,14 @@ If you want to change the time zone of the job summary, you may want to use the
 
 ## Activating `conda` environments
 
-This action uses `bash -l {0}` as the shell to run `pytest` in, 
-i.e., the login shell that also sources your `.bash_profile`. 
-When using `bash` in GitHub Actions, it doesn't source your `.bash_profile` by default. 
-If you want to use a `conda` environment, you need to make sure to add it into your `.bash_profile` s.t. 
-the `conda` environment automatically gets activated. 
-[mamba-org/setup-micromamba](https://github.com/mamba-org/setup-micromamba) 
+### setup-micromamba
+
+This action uses `bash -l {0}` as the shell to run `pytest` in,
+i.e., the login shell that also sources your `.bash_profile`.
+When using `bash` in GitHub Actions, it doesn't source your `.bash_profile` by default.
+If you want to use a `conda` environment, you need to make sure to add it into your `.bash_profile` s.t.
+the `conda` environment automatically gets activated.
+[mamba-org/setup-micromamba](https://github.com/mamba-org/setup-micromamba)
 does this automatically for you.
 
 ```yml
@@ -68,6 +70,18 @@ does this automatically for you.
 - uses: pavelzw/pytest-action@v2
 ```
 
+### setup-pixi
+
+You can also use [pixi](https://github.com/prefix-dev/pixi) to work with conda environments.
+For this, use the [setup-pixi](https://github.com/prefix-dev/setup-pixi) action with `custom-pytest: pixi run pytest`:
+
+```yml
+- uses: prefix-dev/[email protected]
+- uses: pavelzw/pytest-action@v2
+  with:
+    custom-pytest: pixi run pytest
+```
+
 ## Example Usage
 
 ```yml