Split conda test out into separate workflow

.github/workflows/code_test_and_deploy.yml

@@ -45,14 +45,16 @@ jobs:
           auto-update-conda: true
           channels: conda-forge
           activate-environment: "datashuttle-test"
-      - name: Install datashuttle with conda
+
+      # The recommended installation is via conda, but we need to test
+      # against dependencies from the pyproject.toml on the branch
+      # to ensure dependency changes in a PR are reflected.
+      - name: Install rclone
         run: |
           conda activate datashuttle-test
-          conda install -c conda-forge datashuttle
-      - name: Install local datashuttle for testing
+          conda install -c conda-forge rclone
+      - name: Install datashuttle from repo
         run: |
-          # --force will only uninstall datashuttle not dependencies
-          conda uninstall datashuttle --force
           python -m pip install --upgrade pip
           pip install .[dev]
       - name: Test

.github/workflows/conda_install_check.yml

@@ -0,0 +1,35 @@
+# As conda is the recommended installation method, run weekly checks
+# to ensure
+name: conda install check
+
+on:
+  schedule:
+    # Weekly cron job at 12:00 AM UTC on Mondays.
+    - cron: '0 0 * * 1'
+
+jobs:
+  conda_install_check:
+    name: Conda install check (${{ matrix.os }} py${{ matrix.python-version }})
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-13, macos-14]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
+
+    defaults:
+      run:
+        shell: bash -l {0}  # Required for conda activation
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: conda-incubator/setup-miniconda@v3
+        with:
+          python-version: ${{ matrix.python-version }}
+          auto-update-conda: true
+          channels: conda-forge
+          activate-environment: "datashuttle-test"
+      - name: Check conda installation
+        run: |
+          conda install -c conda-forge datashuttle
+          datashuttle --help