Add 3.7 back in the versions tested by CI

We want to keep testing 3.7 after all, because it was only marked EOL
recently, and that it still is pretty easy to do so (support in GH
actions).

Signed-off-by: Gus Monod <gmonod1@bloomberg.net>

.github/workflows/build.yml

@@ -21,11 +21,11 @@ env:
   TIMEOUT: 30
 
 jobs:
-  build_comdb2:
-    name: Build bloomberg/comdb2 from source
+  build_bloomberg_comdb2:
+    name: Build bloomberg-comdb2 from source
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout bloomberg/comdb2 repository
+      - name: Checkout bloomberg-comdb2 repository
         uses: actions/checkout@v4
         with:
           repository: bloomberg/comdb2
@@ -60,9 +60,9 @@ jobs:
             make
           )
         '
-      - name: Archive comdb2 repo with build artifacts
+      - name: Archive bloomberg-comdb2 repo with build artifacts
         run: 'tar czvf bloomberg-comdb2.tar.gz bloomberg-comdb2/'
-      - name: Upload comdb2 repo with build artifacts
+      - name: Upload bloomberg-comdb2 repo with build artifacts
         uses: actions/upload-artifact@v3
         with:
           name: bloomberg-comdb2
@@ -71,9 +71,9 @@ jobs:
   build_sdist:
     name: Build python-comdb2 source distribution
     runs-on: ubuntu-latest
-    needs: [build_comdb2]
+    needs: [build_bloomberg_comdb2]
     steps:
-      - name: Download comdb2 build artifacts
+      - name: Download bloomberg-comdb2 with build artifacts
         uses: actions/download-artifact@v3
         with:
           name: bloomberg-comdb2
@@ -92,15 +92,14 @@ jobs:
           (cd bloomberg-comdb2/build && sudo make install) &&
           rm -rf bloomberg-comdb2.tar.gz bloomberg-comdb2/
         '
-      - name: Install python-comdb2 build-time dependencies
-        run: 'sudo apt-get install -qy pkg-config'
       - uses: actions/checkout@v4
-      - name: 'Set up Python 3.8'
+      - name: 'Set up Python 3.7'
         uses: actions/setup-python@v4 # note that this step overwrites the PKG_CONFIG_PATH variable
         with:
-          python-version: '3.8'
+          python-version: '3.7'  # the lowest version that we support in CI
       - name: Build sdist
         run: '
+          sudo apt-get install -qy pkg-config &&
           PKG_CONFIG_PATH=/opt/bb/lib/pkgconfig:/usr/lib/x86_64-linux-gnu/pkgconfig
           pipx run build --sdist
         '
@@ -122,6 +121,7 @@ jobs:
           - '3.10'
           - '3.9'
           - '3.8'
+          - '3.7'
     steps:
       - name: Download comdb2 repo with build artifacts
         uses: actions/download-artifact@v3
@@ -168,7 +168,7 @@ jobs:
         with:
           name: python-comdb2-sdist
           path: dist
-      - name: Extract sdist
+      - name: Extract python-comdb2 sdist
         run: '
           (cd dist/ && tar xvf comdb2-*.tar.gz && rm comdb2-*.tar.gz) &&
           mv dist/comdb2-* python-comdb2-sdist && rmdir dist
@@ -182,7 +182,7 @@ jobs:
             echo "Creating $table_name from $table_file"
             /opt/bb/bin/cdb2sql "$COMDB2_DBNAME" local "create table $table_name { $(cat $table_file) }"
           done
-      - name: Set up Python ${{ matrix.python_version }}
+      - name: Set up Python ${{matrix.python_version}}
         uses: actions/setup-python@v4 # note that this step overwrites the PKG_CONFIG_PATH variable
         with:
           python-version: "${{matrix.python_version}}"