conda: build python-specific

Author: casperdcl

.github/workflows/build.yml

@@ -71,49 +71,22 @@ jobs:
     runs-on: ${{ matrix.os }}-${{ matrix.os == 'windows' && '2022' || 'latest' }}
     strategy:
       matrix:
+        python-version: ['3.10', 3.11, 3.12, 3.13] # parallelise conda_build_config.yaml
         os: [ubuntu, windows]
+        include:
+        - {python-version: 3.13, os: ubuntu}
     steps:
     - uses: actions/checkout@v4
       with: {fetch-depth: 0, submodules: recursive}
     - if: matrix.os == 'windows'
       uses: ilammy/msvc-dev-cmd@v1
-    - uses: conda-incubator/setup-miniconda@v3
-      with:
-        python-version: 3.12
-        mamba-version: "*"
-        channels: conda-forge
-        conda-remove-defaults: "true"
-    - run: conda install boa conda-verify
-    - name: conda build
-      run: >
-        conda mambabuild -c conda-forge --override-channels --output-folder dist recipe --no-test
-    - uses: actions/upload-artifact@v4
-      with:
-        name: ccpi-regulariser-${{ matrix.os }}
-        path: dist/*/ccpi-regulariser-*.tar.bz2
-  conda-test:
-    defaults: {run: {shell: 'bash -el {0}'}}
-    runs-on: ${{ matrix.os }}-latest
-    needs: [conda-build]
-    strategy:
-      matrix:
-        python-version: ['3.10', 3.11, 3.12] # parallelise conda_build_config.yaml
-        os: [ubuntu, windows]
-        include:
-        - {python-version: 3.13, os: ubuntu}
-    steps:
-    - uses: actions/checkout@v4
     - uses: conda-incubator/setup-miniconda@v3
       with:
         python-version: ${{ matrix.python-version }}
         mamba-version: "*"
         channels: conda-forge
         conda-remove-defaults: "true"
-    - uses: actions/download-artifact@v4
-      with:
-        name: ccpi-regulariser-${{ matrix.os }}
-        path: dist
-    - name: conda test
+    - name: conda build
       run: |
         if test ${{ matrix.python-version }} = 3.13; then
           BUILD_DEP=conda-build
@@ -122,8 +95,12 @@ jobs:
           BUILD_DEP=boa
           BUILD_CMD="conda mambabuild"
         fi
-        conda install $BUILD_DEP
-        $BUILD_CMD -c conda-forge --override-channels dist/*/ccpi-regulariser-*-cpu_h*.tar.bz2 --test --python=${{ matrix.python-version }}
+        mamba install $BUILD_DEP conda-verify
+        $BUILD_CMD -c conda-forge --override-channels --output-folder dist recipe --python=${{ matrix.python-version }}
+    - uses: actions/upload-artifact@v4
+      with:
+        name: ccpi-regulariser-py${{ matrix.python-version}}-${{ matrix.os }}
+        path: dist/*/ccpi-regulariser-*.tar.bz2
   conda-upload:
     if: github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/tags')
     defaults: {run: {shell: 'bash -el {0}', working-directory: dist}}
@@ -152,6 +129,6 @@ jobs:
         ssh -o StrictHostKeyChecking=no -i ./key ${{ secrets.STFC_SSH_HOST }} \
           'bash -lic "conda index --bz2 --zst --run-exports --channeldata --rss -n ccpi ${{ secrets.STFC_SSH_CONDA_DIR }}"'
   pass:
-    needs: [test-cuda, test, conda-test]
+    needs: [test-cuda, test, conda-build]
     runs-on: ubuntu-latest
     steps: [{run: echo success}]

recipe/conda_build_config.yaml

@@ -1,3 +1,8 @@
+python:
+  - 3.10
+  - 3.11
+  - 3.12
+  - 3.13
 cuda_compiler_version:
   - None
   - 12.9

recipe/meta.yaml

@@ -1,6 +1,5 @@
 # https://docs.conda.io/projects/conda-build/en/stable/resources/define-metadata.html#loading-data-from-other-files
 # TODO: use scikit-build-core & setuptools_scm instead
-{% set python_min = "3.10" %}
 {% set project = load_file_data('../src/Python/pyproject.toml', from_recipe_dir=True).get('project', {}) %}
 {% set build_number = environ.get('GIT_DESCRIBE_NUMBER', 0) | int %}
 {% if cuda_compiler_version != "None" %}
@@ -14,7 +13,6 @@ package:
 build:
   preserve_egg_dir: False
   number: {{ build_number }}
-  python_version_independent: true
   run_exports:
     - {{ pin_subpackage(project.get('name'), max_pin='x.x') }}
     - {{ project.get('name') }} =*=cuda* # [cuda_compiler_version != "None"]
@@ -41,19 +39,18 @@ requirements:
   build:
     - cmake
     - ninja
-    - python # [build_platform != target_platform]
     - {{ compiler('cxx') }}
     #- {{ compiler('cuda') }} # [cuda_compiler_version != "None"]
     - cuda-compiler ~={{ cuda_compiler_version }} # [cuda_compiler_version != "None"]
   host:
-    - python ~={{ python_min }}
+    - python
     - llvm-openmp
     - setuptools
     - pip
     - cuda-cccl # [cuda_compiler_version != "None"]
     - cuda-version {{ cuda_compiler_version }} # [cuda_compiler_version != "None"]
   run:
-    - python >={{ python_min }}
+    - python
     - numpy
     - __cuda # [cuda_compiler_version != "None"]
     - {{ pin_compatible('cuda-version', min_pin='x', max_pin='x') }} # [cuda_compiler_version != "None"]