wip: see if python 3.7 can work with new poetry

.github/actions/setup/action.yml

@@ -1,52 +1,55 @@
-name: "Set up repository for CI"
-description: "Install development dependencies"
+name: 'Set up repository for CI'
+description: 'Install development dependencies'
 
 inputs:
     python-version:
-        description: "Python version to install"
-        default: "3.12"
+        description: 'Python version to install'
+        default: '3.12'
     poetry-version:
-        description: "Poetry version to install"
-        default: "1.6.1"
+        description: 'Poetry version to install'
+        default: '1.6.1'
     cache:
-        description: "Cache directory"
-        default: "${{ runner.temp }}/cache"
+        description: 'Cache directory'
+        default: '${{ runner.temp }}/cache'
 
 runs:
-    using: "composite"
+    using: 'composite'
     steps:
-        - name: "Set up Python"
+        - name: 'Set up Python'
           id: setup-python
           uses: actions/setup-python@v4
           with:
-              python-version: ${{ inputs.python-version }}
+              python-version: |
+                  ${{ inputs.python-version }}
+                  3.12
 
-        - name: "Set up dependency cache"
+        - name: 'Set up dependency cache'
           uses: actions/cache@v3
           with:
-              key: ${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ inputs.poetry-version }}-${{ hashFiles('poetry.lock') }}
+              key: ${{ runner.os }}-${{ inputs.python-version }}-${{ inputs.poetry-version }}-${{ hashFiles('poetry.lock') }}
               path: ${{ inputs.cache }}
 
-        - name: "Set up PATH on POSIX"
+        - name: 'Set up PATH on POSIX'
           if: ${{ runner.os != 'windows'}}
           shell: bash
           run: echo "${{ inputs.cache }}/tools/bin" >> $GITHUB_PATH
 
-        - name: "Set up PATH on Windows"
+        - name: 'Set up PATH on Windows'
           if: ${{ runner.os == 'windows'}}
           shell: bash
           run: echo "${{ inputs.cache }}/tools/Scripts" >> $GITHUB_PATH
 
-        - name: "Install Poetry"
+        - name: 'Install Poetry'
           shell: bash
           run: |
               if ! poetry --version; then
                 "${{ steps.setup-python.outputs.python-path }}" -m venv "${{ inputs.cache }}/tools"
                 pip install poetry==${{ inputs.poetry-version }}
               fi
 
-        - name: "Install development dependencies"
+        - name: 'Install development dependencies'
           shell: bash
           run: |
               poetry config cache-dir "${{ inputs.cache }}/poetry"
+              poetry env use ${{ inputs.python-version }}
               poetry install --sync