Add canary builds to CI

.github/workflows/builds-review.yaml

@@ -0,0 +1,60 @@
+name: Review builds
+
+on:
+  # NOTE: github.event context is pull_request payload:
+  # https://docs.github.com/en/developers/webhooks-and-events/webhooks/webhook-events-and-payloads#pull_request
+  pull_request:
+    types:
+      - labeled
+
+jobs:
+  build:
+    if: >-
+      !github.event.repository.fork
+      && github.event.label.name == 'build::review'
+    strategy:
+      matrix:
+        include:
+          - runner: ubuntu-latest
+            subdir: noarch
+    runs-on: ${{ matrix.runner }}
+    steps:
+      - name: Remove build label
+        uses: actions/github-script@v6
+        with:
+          github-token: ${{ secrets.CANARY_ACTION_TOKEN }}
+          script: |
+            const { data: pullRequest } = await github.rest.pulls.get({
+              ...context.repo,
+              pull_number: context.issue.number,
+            })
+            const buildLabel = '${{ github.event.label.name }}'
+            const labels = pullRequest.labels.map(label => label.name)
+            const hasBuildLabel = labels.includes(buildLabel)
+
+            if (hasBuildLabel) {
+                await github.rest.issues.removeLabel({
+                  ...context.repo,
+                  issue_number: context.issue.number,
+                  name: buildLabel,
+                })
+            }
+
+      # Clean checkout of specific git ref needed for package metadata version
+      # which needs env vars GIT_DESCRIBE_TAG and GIT_BUILD_STR:
+      - uses: actions/checkout@v3
+        with:
+          ref: ${{ github.ref }}
+          clean: true
+          fetch-depth: 0
+
+      - name: Create and upload review build
+        uses: conda/actions/[email protected]
+        with:
+          package-name: ${{ github.event.repository.name }}
+          subdir: ${{ matrix.subdir }}
+          anaconda-org-channel: conda-canary
+          anaconda-org-label: ${{ github.repository_owner }}-${{ github.event.repository.name }}-pr-${{ github.event.number }}
+          anaconda-org-token: ${{ secrets.ANACONDA_ORG_CONDA_CANARY_TOKEN }}
+          comment-headline: Review build status
+          comment-token: ${{ secrets.CANARY_ACTION_TOKEN }}

.github/workflows/tests.yml

@@ -1,16 +1,19 @@
 name: Tests
 
 on:
-  # NOTE: github.event context is push payload:
-  # https://docs.github.com/en/developers/webhooks-and-events/webhooks/webhook-events-and-payloads#push
+  # https://docs.github.com/en/webhooks-and-events/webhooks/webhook-events-and-payloads#push
   push:
     branches:
       - main
+      - feature/**
+      - '[0-9].*.x'  # e.g., 1.3.x
 
-  # NOTE: github.event context is pull_request payload:
-  # https://docs.github.com/en/developers/webhooks-and-events/webhooks/webhook-events-and-payloads#pull_request
+  # https://docs.github.com/en/webhooks-and-events/webhooks/webhook-events-and-payloads#pull_request
   pull_request:
 
+  # https://docs.github.com/en/webhooks-and-events/webhooks/webhook-events-and-payloads#workflow_dispatch
+  workflow_dispatch:
+
 concurrency:
   # Concurrency group that uses the workflow name and PR number if available
   # or commit SHA as a fallback. If a new build is triggered under that
@@ -69,3 +72,72 @@ jobs:
         uses: codecov/codecov-action@v3
         with:
           flags: ${{ matrix.python-version }},${{ runner.os }}
+
+  # canary builds
+  build:
+    name: Canary Build
+    needs: [tests]
+    # only build canary build if
+    # - prior steps succeeded,
+    # - this is the main repo, and
+    # - we are on the main, feature, or release branch
+    if: >-
+      always()
+      && !github.event.repository.fork
+      && (
+        github.ref_name == 'main'
+        || startsWith(github.ref_name, 'feature/')
+        || endsWith(github.ref_name, '.x')
+      )
+    strategy:
+      matrix:
+        include:
+          - runner: ubuntu-latest
+            subdir: noarch
+    runs-on: ${{ matrix.runner }}
+    steps:
+      # Clean checkout of specific git ref needed for package metadata version
+      # which needs env vars GIT_DESCRIBE_TAG and GIT_BUILD_STR:
+      - uses: actions/checkout@v3
+        with:
+          ref: ${{ github.ref }}
+          clean: true
+          fetch-depth: 0
+
+      # Explicitly use Python 3.11 since each of the OSes has a different default Python
+      - uses: actions/setup-python@v4
+        with:
+          python-version: '3.11'
+
+      - name: Detect label
+        shell: python
+        run: |
+          from pathlib import Path
+          from re import match
+          from os import environ
+
+          if "${{ github.ref_name }}" == "main":
+              # main branch commits are uploaded to the dev label
+              label = "dev"
+          elif "${{ github.ref_name }}".startswith("feature/"):
+              # feature branch commits are uploaded to a custom label
+              label = "${{ github.ref_name }}"
+          else:
+              # release branch commits are added to the rc label
+              # see https://github.com/conda/infrastructure/issues/760
+              _, name = "${{ github.repository }}".split("/")
+              label = f"rc-{name}-${{ github.ref_name }}"
+
+          Path(environ["GITHUB_ENV"]).write_text(f"ANACONDA_ORG_LABEL={label}")
+
+      - name: Create and upload canary build
+        uses: conda/actions/[email protected]
+        env:
+          # Run conda-build in isolated activation to properly package conda
+          _CONDA_BUILD_ISOLATED_ACTIVATION: 1
+        with:
+          package-name: ${{ github.event.repository.name }}
+          subdir: ${{ matrix.subdir }}
+          anaconda-org-channel: conda-canary
+          anaconda-org-label: ${{ env.ANACONDA_ORG_LABEL }}
+          anaconda-org-token: ${{ secrets.ANACONDA_ORG_CONDA_CANARY_TOKEN }}

news/68-canary

@@ -0,0 +1,19 @@
+### Enhancements
+
+* Add canary builds. (#68)
+
+### Bug fixes
+
+* <news item>
+
+### Deprecations
+
+* <news item>
+
+### Docs
+
+* <news item>
+
+### Other
+
+* <news item>