WIP allow use of a callable to depend on orig_version

- now uses a single list item, so a single callable can return a all
  decls

FIXME:
- added dependencies not taken into account?
- apply to firstboot
- hardcoding "orig_version" feels bad for further usage
  => derive param name from lambda introspection?
- squash?

tests/install/conftest.py

@@ -211,7 +211,14 @@ def xcpng_chained(request):
     # take test name from mark
     marker = request.node.get_closest_marker("continuation_of")
     assert marker is not None, "xcpng_chained fixture requires 'continuation_of' marker"
-    continuation_of = marker.args
+    continuation_of = marker.args[0]
+    if callable(continuation_of):
+        try:
+            orig_version = request.getfixturevalue("orig_version")
+        except pytest.FixtureLookupError as e:
+            raise RuntimeError("'orig_version' test parameter not found") from e
+        continuation_of = continuation_of(orig_version=orig_version)
+
     vm_defs = [dict(name=vm_spec['vm'],
                     image=shortened_nodeid(
                         _expand_scope_relative_nodeid(vm_spec['test'],

tests/install/test.py

@@ -127,25 +127,25 @@ def test_install_uefi(self, request, version, iso_remaster, create_vms):
     @pytest.mark.usefixtures("xcpng_chained")
     @pytest.mark.parametrize("mode", [
         pytest.param("821.1", marks=[
-            pytest.mark.continuation_of(dict(vm="vm 1",
-                                             test="TestNested::test_install_uefi[821.1]")),
+            pytest.mark.continuation_of([dict(vm="vm 1",
+                                              test="TestNested::test_install_uefi[821.1]")]),
         ]),
         pytest.param("821.1_821.1", marks=[
-            pytest.mark.continuation_of(dict(vm="vm 1",
-                                             test="TestNested::test_upgrade_uefi[821.1-821.1]")),
+            pytest.mark.continuation_of([dict(vm="vm 1",
+                                              test="TestNested::test_upgrade_uefi[821.1-821.1]")]),
         ]),
         pytest.param("821.1_83b2", marks=[
-            pytest.mark.continuation_of(dict(vm="vm 1",
-                                             test="TestNested::test_upgrade_uefi[821.1-83b2]")),
+            pytest.mark.continuation_of([dict(vm="vm 1",
+                                              test="TestNested::test_upgrade_uefi[821.1-83b2]")]),
         ]),
         pytest.param("83b2", marks=[
-            pytest.mark.continuation_of(dict(vm="vm 1",
-                                             test="TestNested::test_install_uefi[83b2]")),
+            pytest.mark.continuation_of([dict(vm="vm 1",
+                                              test="TestNested::test_install_uefi[83b2]")]),
         ]),
         # 8.3b2 disabled the upgrade from 8.3
         #pytest.param("83b2_83b2", marks=[
-        #    pytest.mark.continuation_of(dict(vm="vm 1",
-        #                                     test="TestNested::test_upgrade_uefi[83b2-83b2]")),
+        #    pytest.mark.continuation_of([dict(vm="vm 1",
+        #                                      test="TestNested::test_upgrade_uefi[83b2-83b2]")]),
         #]),
     ])
     def test_firstboot_uefi(self, request, create_vms, mode):
@@ -249,20 +249,13 @@ def test_firstboot_uefi(self, request, create_vms, mode):
 
     @pytest.mark.usefixtures("xcpng_chained")
     @pytest.mark.parametrize(("orig_version", "version"), [
-        pytest.param("821.1", "821.1", marks=[
-            pytest.mark.continuation_of(dict(vm="vm 1",
-                                             test="TestNested::test_firstboot_uefi[821.1]")),
-        ]),
-        pytest.param("821.1", "83b2", marks=[
-            pytest.mark.continuation_of(dict(vm="vm 1",
-                                             test="TestNested::test_firstboot_uefi[821.1]")),
-        ]),
-        # 8.3b2 disabled the upgrade from 8.3
-        #pytest.param("83b2", "83b2", marks=[
-        #    pytest.mark.continuation_of(dict(vm="vm 1",
-        #                                     test="TestNested::test_firstboot_uefi[83b2]")),
-        #]),
+        ("821.1", "821.1"),
+        ("821.1", "83b2"),
+        #("83b2", "83b2"), # 8.3b2 disabled the upgrade from 8.3
     ])
+    @pytest.mark.continuation_of(
+        lambda orig_version: [dict(vm="vm 1",
+                                   test=f"TestNested::test_firstboot_uefi[{orig_version}]")])
     @pytest.mark.answerfile(
         {
             "base": "UPGRADE",
@@ -271,7 +264,7 @@ def test_firstboot_uefi(self, request, create_vms, mode):
         })
     @pytest.mark.installer_iso(lambda version: {"821.1": "xcpng-8.2.1-2023",
                                                 "83b2": "xcpng-8.3-beta2"}[version])
-    def test_upgrade_uefi(self, request, iso_remaster, create_vms, orig_version, version):
+    def test_upgrade_uefi(self, request, orig_version, version, iso_remaster, create_vms):
         host_vm = create_vms[0]
         vif = host_vm.vifs()[0]
         mac_address = vif.param_get('MAC')