CI: Factor out Conda-based install

.github/actions/install-conda/action.yml

@@ -0,0 +1,46 @@
+name: 'Install Using Conda'
+description: 'Setup environment and install using a Conda-based toolchain'
+inputs:
+  type:
+    description: 'Whether test or doc build'
+    required: true
+  python-version:
+    description: 'What version of Python to use'
+    required: true
+runs:
+  using: composite
+  steps:
+    - name: Setup conda caching
+      uses: actions/[email protected]
+      with:
+        path: ~/conda_pkgs_dir
+        key: conda-${{ inputs.type }}-${{ runner.os }}-${{ inputs.python-version}}-${{ hashFiles('ci/*') }}
+        restore-keys: |
+          conda-${{ inputs.type }}-${{ runner.os }}-${{ inputs.python-version}}
+          conda-${{ inputs.type }}-${{ runner.os }}
+          conda-${{ inputs.type }}-
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: conda-incubator/[email protected]
+      with:
+        miniforge-version: latest
+        miniforge-variant: mambaforge
+        python-version: ${{ inputs.python-version }}
+        channel-priority: strict
+        channels: conda-forge/label/testing,conda-forge
+        show-channel-urls: true
+        # Needed for caching
+        use-only-tar-bz2: true
+
+    - name: Install dependencies
+      shell: bash -l {0}
+      run: mamba install --quiet --yes --file ci/${{ inputs.type }}_requirements.txt --file ci/extra_requirements.txt --file ci/requirements.txt
+
+    - name: Install
+      shell: bash -l {0}
+      # For some reason on Windows 3.7 building the wheel fails to properly include our extra
+      # stuff. Executing the egg_info beforehand for some reason fixes it. No idea why. We're
+      # deep in territory where googling for answers helps not at all.
+      run: |
+        python setup.py egg_info
+        python -m pip install --no-deps .

.github/actions/install-pypi/action.yml

@@ -41,6 +41,10 @@ runs:
           pip-${{ inputs.type }}-${{ runner.os }}-
           pip-${{ inputs.type }}-
 
+    - name: Setup PROJ
+      if: ${{ inputs.need-cartopy == 'true' }}
+      uses: ./.github/actions/setup-proj
+
     # This installs the stuff needed to build and install Shapely and CartoPy from source.
     - name: Install CartoPy build dependencies
       if: ${{ inputs.need-cartopy == 'true' }}

.github/workflows/docs-conda.yml

@@ -34,37 +34,11 @@ jobs:
     - name: Get tags
       run: git fetch --depth=1 origin +refs/tags/*:refs/tags/*
 
-    - name: Setup conda caching
-      uses: actions/[email protected]
+    - name: Install from Conda
+      uses: ./.github/actions/install-conda
       with:
-        path: ~/conda_pkgs_dir
-        key: conda-docs-${{ runner.os }}-${{ matrix.python-version}}-${{ hashFiles('ci/*') }}
-        restore-keys: |
-          conda-docs-${{ runner.os }}-${{ matrix.python-version}}
-          conda-docs-${{ runner.os }}
-          conda-docs-
-
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: conda-incubator/[email protected]
-      with:
-        miniforge-version: latest
-        miniforge-variant: mambaforge
+        type: 'doc'
         python-version: ${{ matrix.python-version }}
-        channel-priority: strict
-        show-channel-urls: true
-        # Needed for caching
-        use-only-tar-bz2: true
-
-    - name: Install dependencies
-      run: mamba install --quiet --yes --file ci/doc_requirements.txt --file ci/extra_requirements.txt --file ci/requirements.txt
-
-    - name: Install
-      # For some reason on Windows 3.7 building the wheel fails to properly include our extra
-      # stuff. Executing the egg_info beforehand for some reason fixes it. No idea why. We're
-      # deep in territory where googling for answers helps not at all.
-      run: |
-        python setup.py egg_info
-        python -m pip install --no-deps .
 
     - name: Build docs
       run: |

.github/workflows/docs.yml

@@ -50,9 +50,6 @@ jobs:
     - name: Add extras to requirements
       run: cat ci/extra_requirements.txt >> ci/doc_requirements.txt
 
-    - name: Setup PROJ
-      uses: ./.github/actions/setup-proj
-
     - name: Install using PyPI
       uses: ./.github/actions/install-pypi
       with:

.github/workflows/nightly-builds.yml

@@ -34,9 +34,6 @@ jobs:
         echo git+git://github.com/hgrecco/pint@master#egg=pint >> ci/test_requirements.txt
         echo git+git://github.com/pydata/xarray@main#egg=xarray >> ci/test_requirements.txt
 
-    - name: Setup PROJ
-      uses: ./.github/actions/setup-proj
-
     - name: Install using PyPI
       uses: ./.github/actions/install-pypi
       with:
@@ -86,9 +83,6 @@ jobs:
         echo git+git://github.com/hgrecco/pint@master#egg=pint >> ci/doc_requirements.txt
         echo git+git://github.com/pydata/xarray@main#egg=xarray >> ci/doc_requirements.txt
 
-    - name: Setup PROJ
-      uses: ./.github/actions/setup-proj
-
     - name: Install using PyPI
       uses: ./.github/actions/install-pypi
       with:

.github/workflows/tests-conda.yml

@@ -33,38 +33,11 @@ jobs:
     - name: Get tags
       run: git fetch --depth=1 origin +refs/tags/*:refs/tags/*
 
-    - name: Setup conda caching
-      uses: actions/[email protected]
+    - name: Install from Conda
+      uses: ./.github/actions/install-conda
       with:
-        path: ~/conda_pkgs_dir
-        key: conda-tests-${{ runner.os }}-${{ matrix.python-version}}-${{ hashFiles('ci/*') }}
-        restore-keys: |
-          conda-tests-${{ runner.os }}-${{ matrix.python-version}}
-          conda-tests-${{ runner.os }}
-          conda-tests-
-
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: conda-incubator/[email protected]
-      with:
-        miniforge-version: latest
-        miniforge-variant: mambaforge
+        type: 'test'
         python-version: ${{ matrix.python-version }}
-        channel-priority: strict
-        channels: conda-forge/label/testing,conda-forge
-        show-channel-urls: true
-        # Needed for caching
-        use-only-tar-bz2: true
-
-    - name: Install dependencies
-      run: mamba install --quiet --yes --file ci/test_requirements.txt --file ci/extra_requirements.txt --file ci/requirements.txt
-
-    - name: Install
-      # For some reason on Windows 3.7 building the wheel fails to properly include our extra
-      # stuff. Executing the egg_info beforehand for some reason fixes it. No idea why. We're
-      # deep in territory where googling for answers helps not at all.
-      run: |
-        python setup.py egg_info
-        python -m pip install --no-deps .
 
     - name: Run tests
       uses: ./.github/actions/run-tests

.github/workflows/tests-pypi.yml

@@ -61,9 +61,6 @@ jobs:
               out.write(dep.replace('>=', '==') + '\n')
         EOF
 
-    - name: Setup PROJ
-      uses: ./.github/actions/setup-proj
-
     - name: Install from PyPI
       uses: ./.github/actions/install-pypi
       with: