Weird
root@mowa219-gjp4-8570p:~ # pkg install -n lightdm
Updating FreeBSD repository catalogue...
FreeBSD repository is up to date.
Updating poudriere repository catalogue...
poudriere repository is up to date.
All repositories are up to date.
Checking integrity... done (3 conflicting)
- lightdm-1.30.0_2 [FreeBSD] conflicts with sddm-0.19.0_1 [installed] on /usr/local/etc/dbus-1/system.d/org.freedesktop.DisplayManager.conf
- libglvnd-1.3.2 [FreeBSD] conflicts with mesa-libs-20.2.3 [installed] on /usr/local/include/EGL/egl.h
- libglvnd-1.3.2 [poudriere] conflicts with mesa-libs-20.2.3 [installed] on /usr/local/include/EGL/egl.h
Checking integrity... done (0 conflicting)
The following 2 package(s) will be affected (of 0 checked):
Installed packages to be REMOVED:
sddm: 0.19.0_1
New packages to be INSTALLED:
lightdm: 1.30.0_2 [FreeBSD]
Number of packages to be removed: 1
Number of packages to be installed: 1
The operation will free 3 MiB.
root@mowa219-gjp4-8570p:~ # uname -KrU
14.0-CURRENT 1400021 1400021
root@mowa219-gjp4-8570p:~ #
Why would you like to have both installed?