Update environment.py

ersilia/utils/environment.py

@@ -2,12 +2,11 @@
 Utility functions to get information about the working environment.
 """
 
-import pkg_resources
-
+from importlib.metadata import distributions
 
 class Environment(object):
     def __init__(self):
-        self.python_packages = {pkg.key for pkg in pkg_resources.working_set}
+        self.python_packages = {dist.metadata['Name'] for dist in distributions()}
 
     def has_module(self, module_name):
         """Check if Python module is installed."""