The DKMS script searches the kernel headers in /lib/modules/*kernel*/source/include instead of e.g. /usr/src/linux-headers-*kernel*/include.
/lib/modules/*kernel*/source does not exist and will not be created by any of the kernel packages, so this seems to be the core problem of this bug.
The DKMS script searches the kernel headers in /lib/modules/ *kernel* /source/ include instead of e.g. /usr/src/ linux-headers- *kernel* /include. *kernel* /source does not exist and will not be created by any of the kernel packages, so this seems to be the core problem of this bug.
/lib/modules/