fix: warn when --filter is used and asscaciated dependencies missing

pass_import/__main__.py

@@ -23,9 +23,6 @@
 import traceback
 from argparse import ArgumentParser, RawDescriptionHelpFormatter
 
-import jsonpath_ng.ext
-from jsonpath_ng.exceptions import JsonPathLexerError, JsonPathParserError
-
 from pass_import import Detecters, Managers, __version__
 from pass_import.auto import AutoDetect
 from pass_import.core import Cap
@@ -34,6 +31,13 @@
 
 MANAGERS = Managers()
 
+try:
+    import jsonpath_ng.ext
+    from jsonpath_ng.exceptions import JsonPathLexerError, JsonPathParserError
+    JSONNG = True
+except ImportError:
+    JSONNG = False
+
 
 class ArgParser(ArgumentParser):
     """Manages argument parsing and adds some defaults."""
@@ -437,6 +441,11 @@ def pass_filter(conf, entry):
     if filter_expression is None:
         return True
 
+    if not JSONNG:
+        message = ("--filter requires pass-import[filter] "
+                   "or pass-import[all] to be installed")
+        raise ImportError('Missing packages. ' + message)
+
     # Having end users write their JSONPath filter expression as if
     # pass-import processes/filters entries in bulk, will allow end
     # users filter expression to continue to work when/if bulk filter is

setup.cfg

@@ -50,7 +50,6 @@ install_requires =
     pyaml
     zxcvbn
     requests
-    jsonpath-ng
 
 [options.entry_points]
 console_scripts =
@@ -67,9 +66,13 @@ encrypted_otp =
     cryptography
 decrypt =
     file-magic
-all = 
+filter =
+    jsonpath-ng
+all =
     defusedxml
     pykeepass
     secretstorage
     cryptography
     file-magic
+    jsonpath-ng
+