Add upstream CI (#577)

* add upstream dev CI

* add cartopy to upstream dev testing

.github/workflows/upstream-dev-ci.yml

@@ -0,0 +1,43 @@
+name: CI Upstream
+on:
+  schedule:
+    - cron: "0 0 * * *" # daily at 00:00 UTC
+  workflow_dispatch: # allows you to trigger the workflow run manually
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  upstream-dev:
+    name: upstream-dev
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash -l {0}
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.11"]
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0 # fetch all history for all branches and tags.
+      - name: set up environment
+        uses: mamba-org/setup-micromamba@v1
+        with:
+          environment-file: conda_environment.yml
+          create-args: >-
+            python=${{ matrix.python-version }}
+      - name: install upstream versions
+        run: |
+          bash ci/install-upstream.sh
+      - name: environment info
+        run: |
+          conda info
+          conda list
+      - name: make html
+        working-directory: ./docs
+        run: |
+          make html

ci/install-upstream.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+# adapted from https://github.com/pydata/xarray/blob/main/ci/install-upstream-wheels.sh
+
+# forcibly remove packages to avoid artifacts
+conda remove -y --force \
+    metpy \
+    numpy \
+    pandas \
+    scipy \
+    xarray \
+    matplotlib \
+    geocat-viz \
+    geocat-comp \
+    cartopy
+
+# conda list
+conda list
+
+# if available install from nightly wheels
+python -m pip install \
+    --index-url https://pypi.anaconda.org/scientific-python-nightly-wheels/simple \
+    --extra-index-url https://pypi.org/simple \
+    --no-deps \
+    --pre \
+    --upgrade \
+    numpy \
+    pandas \
+    scipy \
+    xarray \
+    matplotlib
+
+# install rest from source
+python -m pip install \
+    git+https://github.com/Unidata/MetPy.git \
+    git+https://github.com/NCAR/geocat-comp.git \
+    git+https://github.com/NCAR/geocat-viz.git \
+    git+https://github.com/SciTools/cartopy.git

conda_environment.yml

@@ -14,9 +14,12 @@ dependencies:
   - metpy
   - nbsphinx
   - netcdf4
+  - numpy
+  - pandas
   - pillow
   - pip
   - scikit-learn
+  - scipy
   - sphinx-book-theme
   - sphinx-design
   - sphinx-gallery