Migrate from CONDA to pixi

.github/dependabot.yml

@@ -9,3 +9,11 @@ updates:
     directory: "/" # Workflow files stored in the default location of `.github/workflows`
     schedule:
       interval: "weekly"
+
+  - package-ecosystem: "pip" # Monitor Python dependencies in pyproject.toml
+    directory: "/"
+    schedule:
+      interval: "weekly"
+
+  # Note: PIXI lockfiles are handled by the update-lockfiles.yml workflow
+  # which automatically creates PRs for PIXI dependency updates

.github/workflows/package.yml

@@ -1,4 +1,4 @@
-name: conda packaging and deployment
+name: pixi packaging and deployment
 
 on:
   workflow_dispatch:
@@ -9,31 +9,17 @@ on:
 jobs:
   linux:
     runs-on: ubuntu-latest
-    defaults:
-      run:
-        shell: bash -l {0}
     steps:
       - uses: actions/checkout@v4
-      - uses: conda-incubator/setup-miniconda@v3
+      - uses: prefix-dev/setup-[email protected]
         with:
-          auto-update-conda: true
-          channels: conda-forge,defaults
-          use-mamba: true
-          environment-file: environment.yml
-          activate-environment: test
-      - name: install additional dependencies
-        run: |
-          echo "installing additional dependencies from environment_development.yml"
+          pixi-version: v0.41.4
+          manifest-path: pyproject.toml
       - name: build conda package
         run: |
-          # set up environment
-          cd conda.recipe
-          echo "versioningit $(versioningit ../)"
-          # build the package
-          VERSION=$(versioningit ../) conda mambabuild --channel conda-forge --channel mantid/label/nightly --channel mantid-ornl --channel mantid-ornl/label/rc --channel neutrons/label/rc --output-folder . .
-          conda verify noarch/snapwrap*.tar.bz2
+          echo "build and verify conda package"
+          pixi run verify-conda
       - name: upload conda package to anaconda
-        shell: bash -l {0}
         if: startsWith(github.ref, 'refs/tags/v')
         env:
           ANACONDA_API_TOKEN: ${{ secrets.ANACONDA_TOKEN }}
@@ -43,30 +29,24 @@ jobs:
           CONDA_LABEL="main"
           if [ "${IS_RC}" = "true" ]; then CONDA_LABEL="rc"; fi
           echo pushing ${{ github.ref }} with label $CONDA_LABEL
-          anaconda upload --label $CONDA_LABEL conda.recipe/noarch/snapwrap*.tar.bz2
+          pixi run -- anaconda upload --label $CONDA_LABEL conda.recipe/noarch/snapwrap*.tar.bz2
 
   pypi-publish:
     name: upload release to PyPI
     runs-on: ubuntu-latest
-    defaults:
-      run:
-        shell: bash -l {0}
     permissions:
       # IMPORTANT: this permission is mandatory for trusted publishing
       id-token: write
     steps:
       - uses: actions/checkout@v4
-      - uses: conda-incubator/setup-miniconda@v3
+      - uses: prefix-dev/setup-[email protected]
         with:
-          auto-update-conda: true
-          channels: conda-forge,defaults
-          use-mamba: true
-          environment-file: environment.yml
-          activate-environment: test
+          pixi-version: v0.41.4
+          manifest-path: pyproject.toml
       - name: build pypi package
         run: |
           # build the package
-          VERSION=$(versioningit .) python -m build
+          pixi run build-pypi
       # publish your distributions here (need to setup on PyPI first)
       - name: Publish package distributions to PyPI
         if: startsWith(github.ref, 'refs/tags/v')

.github/workflows/unittest.yml

@@ -1,4 +1,4 @@
-name: unit-test
+name: pixi unit-test
 
 on:
   workflow_dispatch:
@@ -10,38 +10,22 @@ on:
 jobs:
   linux:
     runs-on: ubuntu-latest
-    defaults:
-      run:
-        shell: bash -l {0}
     steps:
       - uses: actions/checkout@v4
-      - uses: conda-incubator/setup-miniconda@v3
+      - uses: prefix-dev/setup-[email protected]
         with:
-          auto-update-conda: true
-          channels: conda-forge,defaults
-          use-mamba: true
-          environment-file: environment.yml
-          activate-environment: test
-      - name: install additional dependencies
-        run: |
-          echo "installing additional dependencies if cannot be installed from conda"
+          pixi-version: v0.41.4
+          manifest-path: pyproject.toml
       - name: run unit tests
         run: |
           echo "running unit tests"
-          python -m pytest --cov=src --cov-report=xml --cov-report=term-missing tests/
+          pixi run test
       - name: upload coverage to codecov
         uses: codecov/codecov-action@v5
-        if:
-          github.actor != 'dependabot[bot]'
+        if: github.actor != 'dependabot[bot]'
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
       - name: build conda package
         run: |
-          # test that the conda package builds
-          cd conda.recipe
-          echo "versioningit $(versioningit ../)"
-          # conda channels could have been defined in the conda-incubator, but you can copy/paste the lines
-          # below to build the conda package in your local machine
-          CHANNELS="--channel mantid/label/main --channel conda-forge --channel mantid/label/nightly --channel mantid-ornl --channel mantid-ornl/label/rc --channel neutrons/label/rc"
-          VERSION=$(versioningit ../) conda mambabuild $CHANNELS --output-folder . .
-          conda verify noarch/snapwrap*.tar.bz2
+          echo "build and verify conda package"
+          pixi run verify-conda

.gitignore

@@ -174,3 +174,11 @@ cython_debug/
 *.egg-info
 src/packagenamepy/_version.py
 
+# Auto-generated version files
+src/snapwrap/_version.py
+
+# Conda build artifacts
+conda.recipe/linux-64/
+conda.recipe/noarch/
+conda.recipe/channeldata.json
+conda.recipe/index.html

.pre-commit-config.yaml

@@ -17,4 +17,4 @@ repos:
   rev: v2.4.1
   hooks:
     - id: codespell
-      exclude: ".*\\.lock$|tests/cis_tests/.*"
+      exclude: ".*\\.lock$|tests/cis_tests/.*|pixi\\.lock"

.readthedocs.yaml

@@ -3,12 +3,16 @@ version: 2
 build:
   os: "ubuntu-22.04"
   tools:
-    python: "mambaforge-22.9"
+    python: "3.8"
+  jobs:
+    pre_install:
+      - curl -fsSL https://pixi.sh/install.sh | bash
+      - export PATH="$HOME/.pixi/bin:$PATH"
+    post_install:
+      - pixi install
+      - pixi run build-docs
 
 sphinx:
   builder: html
   configuration: docs/conf.py
   fail_on_warning: true
-
-conda:
-  environment: environment.yml