'--load-path' option not working for 'guix system' command

[Taegil Bae]

Hi,

I have modified a package and tried 'guix system reconfigure
/etc/config.scm --load-path=~/my-guix'. But it did not load the path.
If I do 'export GUIX_PACKAGE_PATH=~/my-guix', 'guix system reconfigure
/etc/config.scm' loads that path. Is this guix's bug?

Regards,

Taegil