Arm builds

.ci_support/linux_aarch64_.yaml

@@ -0,0 +1,33 @@
+c_compiler:
+- gcc
+c_compiler_version:
+- '14'
+c_stdlib:
+- sysroot
+c_stdlib_version:
+- '2.17'
+channel_sources:
+- conda-forge
+channel_targets:
+- conda-forge main
+cxx_compiler:
+- gxx
+cxx_compiler_version:
+- '14'
+docker_image:
+- quay.io/condaforge/linux-anvil-aarch64:alma9
+pin_run_as_build:
+  python:
+    min_pin: x.x
+    max_pin: x.x
+python:
+- 3.10.* *_cpython
+- 3.11.* *_cpython
+- 3.12.* *_cpython
+- 3.13.* *_cp313
+- 3.14.* *_cp314
+target_platform:
+- linux-aarch64
+zip_keys:
+- - c_compiler_version
+  - cxx_compiler_version

.ci_support/osx_arm64_.yaml

@@ -0,0 +1,39 @@
+MACOSX_DEPLOYMENT_TARGET:
+- '11.0'
+MACOSX_SDK_VERSION:
+- '11.0'
+c_compiler:
+- clang
+c_compiler_version:
+- '19'
+c_stdlib:
+- macosx_deployment_target
+c_stdlib_version:
+- '11.0'
+channel_sources:
+- conda-forge
+channel_targets:
+- conda-forge main
+cxx_compiler:
+- clangxx
+cxx_compiler_version:
+- '19'
+llvm_openmp:
+- '19'
+macos_machine:
+- arm64-apple-darwin20.0.0
+pin_run_as_build:
+  python:
+    min_pin: x.x
+    max_pin: x.x
+python:
+- 3.10.* *_cpython
+- 3.11.* *_cpython
+- 3.12.* *_cpython
+- 3.13.* *_cp313
+- 3.14.* *_cp314
+target_platform:
+- osx-arm64
+zip_keys:
+- - c_compiler_version
+  - cxx_compiler_version

.github/workflows/conda-build.yml

@@ -23,11 +23,19 @@ jobs:
       matrix:
         include:
           - CONFIG: linux_64_
-            STORE_BUILD_ARTIFACTS: False
+            STORE_BUILD_ARTIFACTS: True
+            SHORT_CONFIG: linux_64_
             UPLOAD_PACKAGES: True
             os: ubuntu
             runs_on: ['ubuntu-latest']
             DOCKER_IMAGE: quay.io/condaforge/linux-anvil-x86_64:alma9
+          - CONFIG: linux_aarch64_
+            STORE_BUILD_ARTIFACTS: True
+            SHORT_CONFIG: linux_aarch64_
+            UPLOAD_PACKAGES: True
+            os: ubuntu
+            runs_on: ['ubuntu-24.04-arm']
+            DOCKER_IMAGE: quay.io/condaforge/linux-anvil-aarch64:alma9
     steps:
 
     - name: Checkout code
@@ -108,4 +116,85 @@ jobs:
         UPLOAD_PACKAGES: ${{ matrix.UPLOAD_PACKAGES }}
         BINSTAR_TOKEN: ${{ secrets.BINSTAR_TOKEN }}
         FEEDSTOCK_TOKEN: ${{ secrets.FEEDSTOCK_TOKEN }}
-        STAGING_BINSTAR_TOKEN: ${{ secrets.STAGING_BINSTAR_TOKEN }}
+        STAGING_BINSTAR_TOKEN: ${{ secrets.STAGING_BINSTAR_TOKEN }}
+
+    - name: Determine build outcome
+      # this is to merge the status of the linux/osx/win builds into
+      # something we can easily reuse during artefact generation
+      id: determine-status
+      if: ${{ always() }}
+      shell: bash
+      env:
+        OS: ${{ matrix.os }}
+      run: |
+        if [[ "$OS" == "ubuntu" ]]; then
+          STATUS=${{ steps.build-linux.outcome }}
+        elif [[ "$OS" == "macos" ]]; then
+          STATUS=${{ steps.build-macos.outcome }}
+        elif [[ "$OS" == "windows" ]]; then
+          STATUS=${{ steps.build-windows.outcome }}
+        fi
+        if [ -z "$STATUS" ]; then
+          # steps that never ran will have empty status
+          STATUS="cancelled"
+        fi
+        echo "status=$STATUS" >> $GITHUB_OUTPUT
+
+    - name: Prepare conda build artifacts
+      continue-on-error: true
+      id: prepare-artifacts
+      shell: bash
+      # we do not want to trigger artefact creation if the build was cancelled
+      if: ${{ always() && steps.determine-status.outputs.status != 'cancelled' && matrix.STORE_BUILD_ARTIFACTS }}
+      env:
+        CI: github_actions
+        CONFIG: ${{ matrix.CONFIG }}
+        SHORT_CONFIG: ${{ matrix.SHORT_CONFIG }}
+        JOB_STATUS: ${{ steps.determine-status.outputs.status }}
+        OS: ${{ matrix.os }}
+      run: |
+        export CI_RUN_ID=$GITHUB_RUN_ID
+        export FEEDSTOCK_NAME="$(basename $GITHUB_REPOSITORY)"
+        export ARTIFACT_STAGING_DIR="$GITHUB_WORKSPACE"
+        if [ $OS == "macos" ]; then
+          export CONDA_BLD_PATH="${MINIFORGE_HOME:-${HOME}/miniforge3}/conda-bld"
+        elif [ $OS == "windows" ]; then
+          # this needs to be consistent with build step, see above
+          export CONDA_BLD_PATH="C:\\bld"
+        else
+          export CONDA_BLD_PATH="build_artifacts"
+        fi
+        # Archive everything in CONDA_BLD_PATH except environments
+        # Archive the CONDA_BLD_PATH environments only when the job fails
+        # Use different prefix for successful and failed build artifacts
+        # so random failures don't prevent rebuilds from creating artifacts.
+        if [ $JOB_STATUS == "failure" ]; then
+          export BLD_ARTIFACT_PREFIX="conda_artifacts"
+          export ENV_ARTIFACT_PREFIX="conda_envs"
+        else
+          export BLD_ARTIFACT_PREFIX="conda_pkgs"
+        fi
+        if [ $OS == "windows" ]; then
+          pwsh -Command ". '.scripts/create_conda_build_artifacts.bat'"
+        else
+          ./.scripts/create_conda_build_artifacts.sh
+        fi
+
+    - name: Store conda build artifacts
+      uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
+      if: ${{ always() && steps.prepare-artifacts.outcome == 'success' }}
+      with:
+        name: ${{ steps.prepare-artifacts.outputs.BLD_ARTIFACT_NAME }}
+        path: ${{ steps.prepare-artifacts.outputs.BLD_ARTIFACT_PATH }}
+        retention-days: 14
+      continue-on-error: true
+
+    - name: Store conda build environment artifacts
+      uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0
+      # only relevant if build failed, see above
+      if: ${{ always() && steps.determine-status.outputs.status == 'failure' && steps.prepare-artifacts.outcome == 'success' }}
+      with:
+        name: ${{ steps.prepare-artifacts.outputs.ENV_ARTIFACT_NAME }}
+        path: ${{ steps.prepare-artifacts.outputs.ENV_ARTIFACT_PATH }}
+        retention-days: 14
+      continue-on-error: true