CI: Readd tox+virtualenv tests with EPEL 10

This reverts b919f67d5c

plan.fmf

@@ -15,7 +15,10 @@ discover:
     tests:
     - name: smoke
       path: /smoke
-      test: "VERSION=${pybasever} TOX=false ./venv.sh"
+      test: "VERSION=${pybasever} ./venv.sh"
+    - name: smoke_virtualenv
+      path: /smoke
+      test: "VERSION=${pybasever} METHOD=virtualenv ./venv.sh"
     - name: debugsmoke
       path: /smoke
       test: "PYTHON=python${pybasever}d TOX=false VERSION=${pybasever} ./venv.sh"
@@ -39,6 +42,7 @@ prepare:
   - name: Install dependencies
     how: install
     package:
+    - 'https://dl.fedoraproject.org/pub/epel/epel-release-latest-10.noarch.rpm'
     - gcc  # for extension building in venv and selftest
     - gcc-c++ # for test_cppext
     - gdb  # for test_gdb
@@ -47,6 +51,8 @@ prepare:
     - "python${pybasever}-devel"  # for extension building in venv and selftest
     - "python${pybasever}-tkinter"  # for selftest
     - "python${pybasever}-test"  # for selftest
+    - tox  # for venv tests
+    - virtualenv  # for virtualenv tests
     - glibc-all-langpacks # for locale tests
     - marshalparser  # for testing compatibility (magic numbers) with marshalparser
     - rpm  # for debugging