Add a file to the directory /etc/yum.repos.d/nektar.repo with the following contents
[Nektar] name=nektar baseurl=<baseurl>
substituting <baseurl> for the appropriate line from the table below.
| Distribution | <baseurl> |
| Fedora 25 | http://www.nektar.info/fedora/25/$basearch |
$basearch variable is automatically replaced by Yum with the architecture of your
system.