On Fedora 44+, split this package into multiple subpackages

python3.9 and python3.6 are the only remaining Pythons that are "flatpackaged".

As they are likely to stay around for a while,
it makes no sense to wait this out (like we did with e.g. 3.7 and 3.8).

This (together with similar change in python3.6)
will make all the packaged Pythons packaged in the same way.

Additionally, this also enables the debug build, which was added to CI.

plan.fmf

@@ -5,6 +5,9 @@ provision:
   hardware:
     memory: '>= 3 GB'
 
+environment:
+  pybasever: '3.9'
+
 discover:
   - name: tests_python
     how: shell
@@ -12,13 +15,16 @@ discover:
     tests:
     - name: smoke
       path: /smoke
-      test: "VERSION=3.9 ./venv.sh"
+      test: "VERSION=${pybasever} ./venv.sh"
+    - name: debugsmoke
+      path: /smoke
+      test: "PYTHON=python${pybasever}d TOX=false VERSION=${pybasever} INSTALL_OR_SKIP=true ./venv.sh"
     - name: selftest
       path: /selftest
-      test: VERSION=3.9 X="-x test_wsgiref" ./parallel.sh
+      test: VERSION=${pybasever} X="-x test_wsgiref" ./parallel.sh
     - name: marshalparser
       path: /marshalparser
-      test: "VERSION=3.9 SAMPLE=10 ./test_marshalparser_compatibility.sh"
+      test: "VERSION=${pybasever} SAMPLE=10 ./test_marshalparser_compatibility.sh"
 
 prepare:
   - name: Install dependencies
@@ -26,7 +32,10 @@ prepare:
     package:
     - gcc  # for extension building in venv and selftest
     - gdb  # for test_gdb
-    - python3.9  # the test subject
+    - "python${pybasever}"  # the test subject
+    - "python${pybasever}-devel"  # for extension building in venv and selftest
+    - "python${pybasever}-tkinter"  # for selftest
+    - "python${pybasever}-test"  # for selftest
     - python3-tox  # for venv tests
     - glibc-all-langpacks # for locale tests
     - marshalparser  # for testing compatibility (magic numbers) with marshalparser