Hi Joseph, you should rather install openssl development package through your distribution's package manager. As you can see in the error message,
> One or more OS dependencies were not found: [('openssl-devel',
> 'libssl-dev', 'libopenssl-devel')]
EasyBuild is looking for a package in your distribution called one of
'openssl-devel', 'libssl-dev', 'libopenssl-devel'). Install that (using
yum, or apt, or whatever your distribution uses), and you should be fine.
Cheers,
Andreas

