As per The personal-files interface, the personal-files interface is “typically used to provide read-only access to top-level hidden data directories within a user’s home directory in order to support importing data from existing applications where the snap is the clear owner of the target directory.”
While wksctl is the clear owner of ~/.wks, you are requesting write access rather than read. What sort of compatibility guarantees does wksctl provide when wksctl provided as a snap and wksctl provided as something else are both installed on the system and both writing to ~/.wks? Will the snap break the other install or vice versa? If not, how is this achieved?
Also, while ~/.wks contains your kubeconfig, in terms of clarity for users, your snapcraft.yaml should be updated to use this instead:
plugs:
dot-wks:
interface: personal-files
write:
- $HOME/.wks