Switch to Pixi

.gitattributes

@@ -1 +1,3 @@
 .git_archival.txt  export-subst
+# SCM syntax highlighting & preventing 3-way merges
+pixi.lock merge=binary linguist-language=YAML linguist-generated=true -diff

.github/ISSUE_TEMPLATE/bug_report.md

@@ -31,7 +31,6 @@ PASTE ERROR MESSAGE HERE
 <!-- blacken-docs:on -->
 
 **Info on your environment**
-Paste the output of `polartoolkit.Report()` below:
 
 <!-- blacken-docs:off -->
 ```

.github/ISSUE_TEMPLATE/release_checklist.md

@@ -13,9 +13,9 @@ assignees: ''
 
 ## Update dependencies
 
-- [ ] Check all the dependency changes since the last release are  reflected in `environment.yml`, `pyproject.toml`, and the Scooby list in `__init__.py`
+- [ ] Check all the dependency changes since the last release are  reflected in `pyproject.toml` (both in `dependencies` and under `[tool.pixi.dependencies]`), and the Scooby list in `__init__.py`
 - [ ] Check any new function are added to `__init__.py` and `docs/api/polartoolkit.rst`
-- [ ] Update the backup environment file `env/environment.yml` with `make conda_export`
+- [ ] Update the backup environment file `env/environment.yml` with `pixi run conda_export`
 - [ ] update PolarToolkit version in `environment.yml` in [PolarToolkit-Binder repo](https://github.com/mdtanker/polartoolkit-binder) to the latest version number
 
 ## Update the changelog

.github/dependabot.yml

@@ -5,8 +5,6 @@ updates:
     directory: "/"
     schedule:
       interval: "monthly"
-    commit-message:
-      prefix: "chore"
     groups:
       actions:
         patterns:

.github/workflows/cd.yml

@@ -43,7 +43,7 @@ jobs:
     if: github.event_name == 'release' && github.event.action == 'published'
 
     steps:
-      - uses: actions/download-artifact@v7
+      - uses: actions/download-artifact@v8
         with:
           name: Packages
           path: dist

.github/workflows/ci.yml

@@ -12,76 +12,66 @@ concurrency:
   cancel-in-progress: true
 
 env:
-  # Many color libraries just need this variable to be set to any value.
-  # Set it to 3 to support 8-bit color graphics (256 colors per channel)
-  # for libraries that care about the value set.
+  # Many color libraries just need this to be set to any value, but at least
+  # one distinguishes color depth, where "3" -> "256-bit color".
   FORCE_COLOR: 3
 
 defaults:
   run:
     shell: bash -el {0}
 
 jobs:
-  lint:
-    name: Pylint
+  style:
+    name: Style checks
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
         with:
           fetch-depth: 0
+
       - uses: actions/setup-python@v6
         with:
           python-version: "3.13"
-      - uses: astral-sh/setup-uv@v7
-      - name: Run Pylint
-        run: uvx nox -s pylint -- --output-format=github
 
-  checks:
-    name: Check Python ${{ matrix.python-version }} on ${{ matrix.runs-on }}
+      - uses: prefix-dev/setup-pixi@v0.9.4
+        with:
+          pixi-version: v0.65.0
+          cache: true
+          environments: dev
+
+      - run: pixi run style
+
+  test:
+    name: Python Tests ${{ matrix.python-version }} on ${{ matrix.runs-on }}
     runs-on: ${{ matrix.runs-on }}
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.11", "3.12", "3.13"]
+        python-version: ["3.11", "3.12", "3.13", "3.14"]
         runs-on: [ubuntu-latest, windows-latest, macos-14]
 
     env:
       NUMBA_DISABLE_JIT: "1"
     timeout-minutes: 30
 
     steps:
-      - name: Checkout
-        uses: actions/checkout@v6
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
-      - name: Switch to Current Branch
-        run: git checkout ${{ env.BRANCH }}
-
-      - name: Get current week number of year
-        id: date
-        run: echo "date=$(date +%Y-W%W)" >> $GITHUB_OUTPUT # e.g., 2024-W19
-
-      # Install Micromamba with conda-forge dependencies
-      - name: Setup Micromamba
-        uses: mamba-org/setup-micromamba@v2
+      - uses: actions/setup-python@v6
         with:
-          environment-file: environment.yml
-          post-cleanup: "all"
-          cache-downloads: false
-          # environment cache is persistent for one week.
-          cache-environment-key:
-            micromamba-environment-${{ steps.date.outputs.date }}
+          python-version: ${{ matrix.python-version }}
 
-      - name: Install package
-        run: pip install --no-deps -e .
+      - uses: prefix-dev/setup-pixi@v0.9.4
+        with:
+          pixi-version: v0.65.0
+          cache: true
+          environments: test
 
-      - name: Run the tests
-        run: >-
-          pytest -m "not fetch and not issue" -ra --cov --cov-report=xml
-          --cov-report=term --durations=20
+      - run: pixi run test_ci
 
-      - name: Upload coverage report
+      - name: Upload Coverage to Codecov
         uses: codecov/codecov-action@v5
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

.gitignore

@@ -167,3 +167,6 @@ tmp*
 .vscode*
 
 docs/api/generated/
+# pixi environments
+.pixi/*
+!.pixi/config.toml

.pre-commit-config.yaml

@@ -6,8 +6,8 @@ ci:
 exclude: |
   (?x)^(
       .github/config.yml |
-      environment.yml |
-      env/environment.yml
+      env/environment.yml |
+      pixi.lock
   )$
 
 repos:
@@ -21,7 +21,7 @@ repos:
     rev: "v6.0.0"
     hooks:
       - id: check-added-large-files
-        exclude: ^(docs/datasets/|docs/gallery/masking_and_subsetting_data.ipynb)
+        exclude: ^(pixi.lock|docs/datasets/|docs/gallery/masking_and_subsetting_data.ipynb)
       - id: check-case-conflict
       - id: check-merge-conflict
       - id: check-symlinks
@@ -90,7 +90,7 @@ repos:
         exclude: .pre-commit-config.yaml
 
   - repo: https://github.com/abravalheri/validate-pyproject
-    rev: "v0.24.1"
+    rev: "v0.25"
     hooks:
       - id: validate-pyproject
         additional_dependencies: ["validate-pyproject-schema-store[all]"]

.readthedocs.yaml

@@ -6,12 +6,17 @@ version: 2
 build:
   os: ubuntu-24.04
   tools:
-    python: "mambaforge-23.11"
+    python: "latest"
   jobs:
+    create_environment:
+      - asdf plugin add pixi
+      - asdf install pixi latest
+      - asdf global pixi latest
     install:
-      - pip install --no-deps -e .
-conda:
-  environment: environment.yml
+      - pixi install -e docs
+    build:
+      html:
+        - pixi run -e docs sphinx-build -T -b html docs $READTHEDOCS_OUTPUT/html
 
 sphinx:
   configuration: docs/conf.py