Tests GH Actions matrix (OS versions) (redux)

Author: brgix

.github/workflows/pull_request.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       matrix:
         python-version: ["3.10", "3.x"]
-        os-version: ["openstudio==3.6.1", "openstudio==3.10.0"]
+        openstudio-version: ["3.6.1", "3.10.0"]
 
     steps:
       - name: Check out repository
@@ -20,7 +20,9 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies
-        run: python -m pip install --upgrade pip setuptools wheel ${{ matrix.os-version }} oslg
+        run: |
+          python -m pip install --upgrade pip setuptools wheel oslg
+          python -m pip install openstudio==${{ matrix.openstudio-version }}
       - name: Run unit tests
         run: python -m unittest
 
@@ -29,7 +31,7 @@ jobs:
     strategy:
       matrix:
         python-version: ["3.10", "3.x"]
-        os-version: ["openstudio==3.6.1", "openstudio==3.10.0"]
+        openstudio-version: ["3.6.1", "3.10.0"]
 
     steps:
       - name: Check out repository
@@ -39,6 +41,8 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies
-        run: python -m pip install --upgrade pip setuptools wheel ${{ matrix.os-version }} oslg
+        run: |
+          python -m pip install --upgrade pip setuptools wheel oslg
+          python -m pip install openstudio==${{ matrix.openstudio-version }}
       - name: Run unit tests
         run: python -m unittest