I noticed that the latest release (2.24.*) at Index of /ubuntu/beta/ only contains the non-dev package. IOW, it seems the *-dev package stopped being made at version 2.23.00.
(Also reported at https://deconz.dresden-elektronik.de/ubuntu/beta/ lacks deconz-dev-2.24.*.deb files (latest releases) · Issue #7358 · dresden-elektronik/deconz-rest-plugin · GitHub, but that was immediately closed without resolving the issue.)
Background: I want to upgrade deconz in nixpkgs, but unsure what to do now that the *-dev package is missing.