Actually libwebp is not in the list.

I tried rewriting the inputs to no avail.

--8<---------------cut here---------------start------------->8---
(define-public with-sqlite-with-column-metadata
  (package-input-rewriting `((,sqlite . ,sqlite-with-column-metadata))
                           sqlite-variant-package-name))

(define-public libinput-minimal-qt
  (with-sqlite-with-column-metadata libinput-minimal))
  
; etc.
--8<---------------cut here---------------end--------------->8---

Building libinput-minimal-qt gives me a closure that still depends on sqlite.
I guess sqlite must be an implicit dependency then.

To see where it comes from, I produced a graph:

--8<---------------cut here---------------start------------->8---
./pre-inst-env guix graph libinput | dot -Tsvg > dag.svg
--8<---------------cut here---------------end--------------->8---

Sadly this is quite big and hard to read.

Is there a way to trim the graph so that it only display the relationships
between libinput and sqlite?  This would be a very convenient feature.

-- 
Pierre Neidhardt
https://ambrevar.xyz/