My new system is running the kernel 4.18.0-305.17.1.el8_4.x86_64. The problem is that one app is looking for X11/Intrinsic.h, which I’m not sure what it does. Most groups such as ‘Server with GUI’ or Xfce are there, so I’m not sure what is missing or if it’s needed to install another manager. Thanks.
You can ask dnf what package does provide that file
[root@9731244e898e /]# dnf provides \*/Intrinsic.h Rocky Linux 8 - AppStream 2.3 MB/s | 8.2 MB 00:03 Rocky Linux 8 - BaseOS 2.7 MB/s | 3.5 MB 00:01 Rocky Linux 8 - Extras 13 kB/s | 10 kB 00:00 libXt-devel-1.1.5-12.el8.i686 : X.Org X11 libXt development package Repo : appstream Matched from: Filename : /usr/include/X11/Intrinsic.h libXt-devel-1.1.5-12.el8.x86_64 : X.Org X11 libXt development package Repo : appstream Matched from: Filename : /usr/include/X11/Intrinsic.h