Hello, after starting to migrate my config to el-get I noticed that some packages seem to get installed correctly, but are, for some reason not usable.

The packages I've encountered so far are: popup-kill-ring and org-pdfview.
They (I guess) get installed correctly. A el-get-describe popup-kill-ring tells me the package is installed. I can also see it inside ~/.emacs.d/el-get alongside it's dependencies.

However, with popup-kill-ring I should have access to a function popup-kill-ring to invoke it. I don't: popup-kill-ring is not a valid command name.

The same happens with org-pdfview: It seems to be installed correctly, but I should be able to open a pdf file with org-pdfview-open <file>. Again not a valid command name.

Maybe I'm misunderstanding something here.

Snippets used for popup-kill-ring:

(el-get-bundle popup-kill-ring
  (global-set-key (kbd "M-y") #'popup-kill-ring))

Additional info: (featurep 'popup-kill-ring) evaluates to nil. Why?

emacs --version: 26.3
el-get-version: 5.1.f6408024

When I search for popup in .loaddefs.el, the following are all occurences:

;;;### (autoloads nil "popup-kill-ring/popup-kill-ring" "popup-kill-ring/popup-kill-ring.el"
;;;;;;  (0 0 0 0))
;;; Generated autoloads from popup-kill-ring/popup-kill-ring.el

(if (fboundp 'register-definition-prefixes) (register-definition-prefixes "popup-kill-ring/popup-kill-ring" '("popup-kill-ring")))

;;;***

;;;### (autoloads nil "popup/popup" "popup/popup.el" (0 0 0 0))
;;; Generated autoloads from popup/popup.el

(if (fboundp 'register-definition-prefixes) (register-definition-prefixes "popup/popup" '("popup-")))

Also, M-: (el-get-invalidate-autoloads) doesn't help.