Update version error message (#277)

Update version error message to match the minimum support UCX version and provide instructions to check where UCX is being loaded from.

Ported from rapidsai/ucx-py#1069

Authors:
  - Peter Andreas Entschev (https://github.com/pentschev)

Approvers:
  - Mads R. B. Kristensen (https://github.com/madsbk)

URL: #277

python/ucxx/ucxx/__init__.py

@@ -103,10 +103,13 @@ def _is_mig_device(handle):
 
 from ._version import __git_commit__, __version__
 
+__ucx_min_version__ = "1.15.0"
 __ucx_version__ = "%d.%d.%d" % get_ucx_version()
 
-if get_ucx_version() < (1, 11, 1):
+if get_ucx_version() < tuple(int(i) for i in __ucx_min_version__.split(".")):
     raise ImportError(
         f"Support for UCX {__ucx_version__} has ended. Please upgrade to "
-        "1.11.1 or newer."
+        f"{__ucx_min_version__} or newer. If you believe the wrong version "
+        "is being loaded, please check the path from where UCX is loaded "
+        "by rerunning with the environment variable `UCX_LOG_LEVEL=debug`."
     )