fix abi tag for P3.7

Author: slayoo

.github/workflows/tests+artifacts+pypi.yml

@@ -19,8 +19,6 @@ jobs:
         platform: [ubuntu-latest, macos-latest, windows-latest]
         python-version: ["3.7", "3.8", "3.9", "3.10"]
         exclude:
-          - platform: ubuntu-latest
-            python-version: "3.7"
           - platform: windows-latest
             python-version: "3.8"
           - platform: windows-latest
@@ -77,7 +75,7 @@ jobs:
           path: dist
 
       - if: matrix.platform == 'ubuntu-latest'
-        run: python -c "import sys; vi=sys.version_info; print(f'PV={vi.major}{vi.minor}')" >> $GITHUB_ENV
+        run: python -c "import sys; vi=sys.version_info; abitag='m' if vi.minor<8 else ''; print(f'PV={vi.major}{vi.minor}{abitag}')" >> $GITHUB_ENV
 
       - if: matrix.platform == 'ubuntu-latest'
         uses: RalfG/[email protected]