A configuration file is required for --help

[babolivier]

Synapse complains about missing a config file if called with --help, instead of just printing the help doc:

$ python -m synapse.app.homeserver --help
usage: homeserver.py [-c CONFIG_FILE] [--generate-config] [--generate-missing-configs] [-H SERVER_NAME] [--report-stats {yes,no}] [--config-directory DIRECTORY] [--data-directory DIRECTORY] [--open-private-ports]
homeserver.py: error: Must supply a config file.
A config file can be automatically generated using "--generate-config -H SERVER_NAME -c CONFIG-FILE"

If a configuration file is provided, it will print the help doc as expected:

$ python -m synapse.app.homeserver -c homeserver.yaml --help
usage: homeserver.py [-h] [-c CONFIG_FILE] [--generate-config] [--generate-missing-configs] [-H SERVER_NAME] [--report-stats {yes,no}] [--config-directory DIRECTORY] [--data-directory DIRECTORY] [--open-private-ports] [-D]
                     [--print-pidfile] [--manhole PORT] [-d SQLITE_DATABASE_PATH] [-n] [--enable-registration]

Synapse Homeserver

optional arguments:
  -h, --help            show this help message and exit
  -c CONFIG_FILE, --config-path CONFIG_FILE
                        Specify config file. Can be given multiple times and may specify directories containing *.yaml files.
[...]

It seems a bit silly to me that we need a configuration file just to display the help for synapse.app.homeserver.

[richvdh]

I believe this got fixed by #7249

[babolivier]

Wow I really expected my memory's lifespan to be better than that.