Fix neptune-client package available detection (#14714)

Author: awaelchli

src/pytorch_lightning/CHANGELOG.md

@@ -4,6 +4,14 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
+
+## [1.7.7] - 2022-09-??
+
+### Fixed
+
+- Fixed the availability check for the neptune-client package ([#14714](https://github.com/Lightning-AI/lightning/pull/14714))
+
+
 ## [1.7.6] - 2022-09-13
 
 ### Changed

src/pytorch_lightning/loggers/neptune.py

@@ -20,6 +20,7 @@
 ]
 
 import logging
+import operator
 import os
 import warnings
 from argparse import Namespace
@@ -33,13 +34,14 @@
 from pytorch_lightning import __version__
 from pytorch_lightning.callbacks import Checkpoint
 from pytorch_lightning.loggers.logger import Logger, rank_zero_experiment
-from pytorch_lightning.utilities.imports import _RequirementAvailable
+from pytorch_lightning.utilities.imports import _compare_version, _module_available
 from pytorch_lightning.utilities.logger import _add_prefix, _convert_params, _sanitize_callable_params
 from pytorch_lightning.utilities.model_summary import ModelSummary
 from pytorch_lightning.utilities.rank_zero import rank_zero_only
 
-_NEPTUNE_AVAILABLE = _RequirementAvailable("neptune-client")
-_NEPTUNE_GREATER_EQUAL_0_9 = _RequirementAvailable("neptune-client>=0.9.0")
+# Note: Do not use RequirementCache. See: https://github.com/Lightning-AI/lightning/issues/14695
+_NEPTUNE_AVAILABLE = _module_available("neptune")
+_NEPTUNE_GREATER_EQUAL_0_9 = _compare_version("neptune", operator.ge, "0.9.0")
 
 
 if _NEPTUNE_AVAILABLE and _NEPTUNE_GREATER_EQUAL_0_9: