Catch ValueError when setting gst required version

pytest.importskip is used to catch the case when beetsplug.bpd cannot be
imported. On macOS, the gi module was able to be imported, but when
trying to specify `gi.require_version`, a ValueError is raised about
Gst being unavailable. pytest does not catch this ValueError during
importskip as it is not an ImportError, and thus the test suite errors
during the test collection phase.

With this change, we catch the ValueError, and re-raise it as an
ImportError and pytest gracefully skips those tests.

beetsplug/bpd/gstplayer.py

@@ -27,7 +27,16 @@ import gi
 
 from beets import ui
 
+try:
     gi.require_version("Gst", "1.0")
+except ValueError as e:
+    # on some scenarios, gi may be importable, but we get a ValueError when
+    # trying to specify the required version. This is problematic in the test
+    # suite where test_bpd.py has a call to
+    # pytest.importorskip("beetsplug.bpd"). Re-raising as an ImportError
+    # makes it so the test collector functions as inteded.
+    raise ImportError from e
+
 from gi.repository import GLib, Gst  # noqa: E402
 
 Gst.init(None)

docs/changelog.rst

@@ -66,6 +66,8 @@ Other changes:
 - Refactored the ``beets/ui/commands.py`` monolithic file (2000+ lines) into
   multiple modules within the ``beets/ui/commands`` directory for better
   maintainability.
+- :doc:`plugins/bpd`: Raise ImportError instead of ValueError when GStreamer is
+  unavailable, enabling ``importorskip`` usage in pytest setup.
 
 2.5.1 (October 14, 2025)
 ------------------------