Attempting to allow for upgrade and downgrade tests

tools/ci.py

@@ -770,13 +770,19 @@ def pkg_matrix(
     gh_event_path = os.environ.get("GITHUB_EVENT_PATH") or None
     if gh_event_path is None:
         ctx.warn("The 'GITHUB_EVENT_PATH' variable is not set.")
-    else:
-        try:
-            gh_event = json.loads(open(gh_event_path, encoding="utf-8").read())
-        except Exception as exc:
-            ctx.error(
-                f"Could not load the GH Event payload from {gh_event_path!r}:\n", exc
-            )
+        ctx.exit(1)
+
+    if TYPE_CHECKING:
+        assert gh_event_path is not None
+
+    try:
+        gh_event = json.loads(open(gh_event_path, encoding="utf-8").read())
+    except Exception as exc:
+        ctx.error(f"Could not load the GH Event payload from {gh_event_path!r}:\n", exc)
+        ctx.exit(1)
+
+    if TYPE_CHECKING:
+        assert gh_event is not None
 
     github_output = os.environ.get("GITHUB_OUTPUT")
     if github_output is None:
@@ -859,16 +865,6 @@ def pkg_matrix(
     ]
 
     for version, backend in adjusted_versions:
-        if (
-            distro_slug.startswith(("macos-", "debian-", "ubuntu-"))
-            or version.major < 3006
-        ):
-            # XXX: Temporarily skip problematic tests
-            ctx.warn(
-                f"Temporary skip builds on {distro_slug} for version {version} with backend {backend}"
-            )
-            continue
-
         prefix = prefixes[backend]
         # TODO: Remove this after 3009.0
         if backend == "relenv" and version >= tools.utils.Version("3006.5"):
@@ -885,10 +881,9 @@ def pkg_matrix(
             # key_filter = f"Contents[?contains(Key, '{version}')] | [?ends_with(Key, '.msi')]"
             continue
         elif pkg_type == "NSIS":
-            # XXX: Temporarily skip problematic tests
-            # key_filter = (
-            #    f"Contents[?contains(Key, '{version}')] | [?ends_with(Key, '.exe')]"
-            # )
+            key_filter = (
+                f"Contents[?contains(Key, '{version}')] | [?ends_with(Key, '.exe')]"
+            )
             continue
         objects = list(page_iterator.search(key_filter))
         # Testing using `any` because sometimes the paginator returns `[None]`
@@ -916,8 +911,7 @@ def pkg_matrix(
             ctx.print(" * ", entry, soft_wrap=True)
 
     if (
-        gh_event is not None
-        and gh_event["repository"]["fork"] is True
+        gh_event["repository"]["fork"] is True
         and "macos" in distro_slug
         and "arm64" in distro_slug
     ):