Added parameter --pip [package_name]

ogscm/cli.py

@@ -321,6 +321,9 @@ def main():  # pragma: no cover
                 'neovim', 'gdb', 'silversearcher-ag', 'ssh-client', 'less'
             ])
 
+        if args.pip:
+            Stage0 += pip(packages=args.pip, pip='pip3')
+
         if ogs_version != 'off':
             mount_args = ''
             if args.ccache:

ogscm/cli_args.py

@@ -174,6 +174,12 @@ class Cli_Args(argparse.ArgumentParser):
                                 dest='insitu',
                                 action='store_true',
                                 help='Builds with insitu capabilities')
+        switches_g.add_argument('--pip',
+                               nargs='*',
+                               type=str,
+                               default=[''],
+                               metavar='package',
+                               help='Install additional Python packages')
         maint_g = self.add_argument_group('Maintenance')
         maint_g.add_argument(
             '--clean',