New issue by averycoolbean on void-packages repository

https://github.com/void-linux/void-packages/issues/39087

Description:
### Is this a new report?

Yes

### System Info

Void 5.18.19_2 x86_64-glibc

### Package(s) Affected

zfs-2.1.5_2

### Does a report exist for this bug with the project's home (upstream) and/or another distro?

_No response_

### Expected behaviour

package should add, build and install the zfs dkms module

### Actual behaviour

it fails with the simple error `Failed to add DKMS module: 'zfs-2.1.5'...` followed by the contrary `zfs: configured successfully.`

as a result the kernel module is missing, as youd expect

ive also noticed that if i manually try to use `dkms add` it returns `Error! No write access to DKMS tree at /var/lib/dkms`, which is probably related but im not smart enough to figure out how and what causes the issue

### Steps to reproduce

i am word for word following the zfsbootmenu single disk uefi instructions here: https://github.com/zbm-dev/zfsbootmenu/wiki/Void-Linux---Single-disk-UEFI
except using the latest kernel included with the base-system package (5.18) and nano for the text editor which really shouldnt be causing this