Created attachment 515814 [details]
emerge --info nyx
According to this mailing list discussion distro packagers should manually install the man page.
Quoting the email:
"> 5) There is no man page for nyx.
Actually, there is.
Arm attempted to guess where to install it when you ran 'python setup.py install' but doing so caused problems. Unfortunately the path man pages are located at varies by the platform so I now leave it up to package managers (yum, emerge, etc)."