fix: updated the deprecated pkg_resources with packaging.version

Author: devansh-srv

src/sage/features/fricas.py

@@ -14,6 +14,7 @@
 
 import subprocess
 from . import Executable, FeatureTestResult
+from packaging.version import Version
 
 
 class FriCAS(Executable):
@@ -43,6 +44,12 @@ def __init__(self):
     def get_version(self):
         r"""
         Retrieve the installed FriCAS version
+
+        EXAMPLES::
+
+            sage: from sage.features.fricas import FriCAS
+            sage: FriCAS().get_version() # optional - fricas
+            '1.3.8'
         """
         try:
             output = subprocess.check_output(['fricas', '--version'], stderr=subprocess.STDOUT)
@@ -79,11 +86,13 @@ def is_functional(self):
             return FeatureTestResult(self, False,
                                      reason="Could not determine FriCAS version")
 
-        from pkg_resources import parse_version
-        if parse_version(version) < parse_version(self.MINIMUM_VERSION):
-            return FeatureTestResult(self, False,
-                                     reason=f"FriCAS version {version} is too old; minimum required is {self.MINIMUM_VERSION}")
-        return FeatureTestResult(self, True)
+        try:
+            if Version(version) < Version(self.MINIMUM_VERSION):
+                return FeatureTestResult(self, False,
+                                         reason=f"FriCAS version {version} is too old; minimum required is {self.MINIMUM_VERSION}")
+            return FeatureTestResult(self, True)
+        except ValueError:
+            return FeatureTestResult(self, False, reason="Invalid Version Format")
 
 
 def all_features():