build: make IRC mirror integration script installable

This change was originally proposed by Sharlatan Hellseher:
https://codeberg.org/guix/guix/pulls/7418#issuecomment-12239616

* zulip/integrations/bridge_with_irc/irc-mirror.py: Rename file to
'irc_mirror.py' to make it importable as a Python module.

* zulip/integrations/bridge_with_irc/irc_mirror.py: Introduce `main' entry point
so it can be used as a setuptools console script entry point.

* zulip/setup.py: Register 'zulip-irc-bridge' as a console script so it's
installed as part of the package output.

Author: Grimpper

…tegrations/bridge_with_irc/irc-mirror.py …tegrations/bridge_with_irc/irc_mirror.pyzulip/integrations/bridge_with_irc/irc-mirror.py renamed to zulip/integrations/bridge_with_irc/irc_mirror.py zulip/integrations/bridge_with_irc/irc-mirror.py renamed to zulip/integrations/bridge_with_irc/irc_mirror.py

@@ -27,7 +27,7 @@
 Note that "_zulip" will be automatically appended to the IRC nick provided
 """
 
-if __name__ == "__main__":
+def main():
     parser = zulip.add_default_arguments(
         argparse.ArgumentParser(usage=usage), allow_provisioning=True
     )
@@ -45,7 +45,7 @@
     options.client = "irc_mirror"
     zulip_client = zulip.init_from_options(options)
     try:
-        from irc_mirror_backend import IRCBot
+        from .irc_mirror_backend import IRCBot
     except ImportError:
         traceback.print_exc()
         print(
@@ -70,3 +70,6 @@
         sasl_password=options.sasl_password,
     )
     bot.start()
+
+if __name__ == "__main__":
+    main()

zulip/setup.py

@@ -60,6 +60,7 @@ def recur_expand(target_root: Any, dir: Any) -> Generator[Tuple[str, List[str]],
             "zulip-send=zulip.send:main",
             "zulip-api-examples=zulip.api_examples:main",
             "zulip-matrix-bridge=integrations.bridge_with_matrix.matrix_bridge:main",
+            "zulip-irc-bridge=integrations.bridge_with_irc.irc_mirror:main",
             "zulip-api=zulip.cli:cli",
         ],
     },