Added programmatic pip list

GANDLF/entrypoints/debug_info.py

@@ -1,6 +1,7 @@
 #!usr/bin/env python
 # -*- coding: utf-8 -*-
 import platform
+from pip import main
 from deprecated import deprecated
 import click
 
@@ -9,7 +10,7 @@
 from GANDLF.utils import get_git_hash
 
 
-def _debug_info():
+def _debug_info(verbose: bool):
     print(f"GANDLF version: {__version__}")
     print(f"Git hash: {get_git_hash()}")
     print(f"Platform: {platform.platform()}")
@@ -21,13 +22,22 @@ def _debug_info():
     print(f"  Implementation: {platform.python_implementation()}")
     print(f"  Compiler: {platform.python_compiler()}")
     print(f"  Build: {(' ').join(list(platform.python_build()))}")
+    if verbose:
+        print("  Installed packages:")
+        print(main(["list"]))
 
 
 @click.command()
+@click.option(
+    "--verbose",
+    "-v",
+    is_flag=True,
+    help="If passed, prints all packages installed as well",
+)
 @append_copyright_to_help
-def new_way():
+def new_way(verbose: bool):
     """Displays detailed info about system environment: library versions, settings, etc."""
-    _debug_info()
+    _debug_info(verbose=verbose)
 
 
 # main function

testing/entrypoints/test_debug_info.py

@@ -16,7 +16,10 @@
 test_file_system = []
 test_cases = [
     CliCase(
-        should_succeed=True, new_way_lines=[""], old_way_lines=[""], expected_args={}
+        should_succeed=True,
+        new_way_lines=[""],
+        old_way_lines=[""],
+        expected_args={"verbose": True},
     )
 ]