Guest additions can't find installed kernel headers (Alma 9.1 guest, Win10 host)

[selden]

Problem:
When I try to install VB Guest Additions in Alma 9.1, the script can't find the installed kernel headers.
What am I doing wrong? Or is there a bug in the script? If so, is there a workaround?

Symptoms:
The Guest Additions script complains that the installed kernel header version is not installed. See the screengrab below.
As best I can tell, the header version installed is the same as the version that the script can't find.
The same failure is seen if I su to root instead of using sudo.

I'm using

VirtualBox 7.0 Version 7.0.8 r156879 (Qt5.15.2) (downloaded and installed on 4/22/2023)
Oracle_VM_VirtualBox_Extension_Pack-7.0.8.vbox-extpack (downloaded 4/22/2023)

Host: Windows 10 Professional 22H2, build 19045.2846
Guest: AlmaLinux 9.1 (Lime Lynx) (RHEL recompile, updated 4/24/2023)

screengrab of GA script failure

term.png (97.92 KiB) Viewed 2850 times

[debugger]

Check

Code: Select all

test -d /lib/modules/`uname -r`/build

In vboxadd.sh:

Code: Select all

            if test -d /lib/modules/"$TARGET_VER"/build; then
                setup_modules "$TARGET_VER"
                depmod
            else
                info "Kernel headers not found for target kernel $TARGET_VER. \
Please install them and execute
  /sbin/rcvboxadd setup"
            fi

[selden]

that test command returns nothing: it just returns to the command prompt.

looking in the versioned directory, build does exist although it's a softlink to a directory which does not exist.

Is there another package which needs to be installed? If so, what is it?

See the screentgrab below.

[selden]

Problem resolved:

I also had to install the package kernel-devel