I understand why this happens:

  % khal --help
  Usage: .khal-real [OPTIONS] COMMAND [ARGS]...
  [...]

but I think it sorta sucks for user experience.  Just thought I'd point this
out, and I was wondering if there were any ideas to address this.

Specifically, argv[0] references the name of the "real" executable, rather than
the guix wrapper.  This is almost always benign, but it looks ugly in help
menus.

Troy