Not able to specify configuration file on command line

[sivann]

Unless I'm missing something obvious, I can't find a way to specify configuration file on command line like
app -conf config.toml

Using the flags package on top of multiconfig breaks the helpfile and produces a "flag provided but not defined".

[markx]

This library creates flags according to your config struct. It seems that your config struct doesn't have a conf field, hence the error "flag provided but not defined".