openSUSE Tumbleweed with KDE Plasma 5.9.3

I want to install libinput's build dependencies, so I do `sudo zypper
source-install -d libinput10`. But it looks like the source package isn't
available:



sudo zypper source-install -d libinput10
Reading installed packages...
Loading repository data...
Package 'libinput10' has source package 'libinput'.
Source package 'libinput' for package 'libinput10' not found.
Resolving package dependencies...
No additional space will be used or freed after the operation.
Nothing to do.



Same thing if I do it for libinput-devel:

sudo zypper source-install -d libinput-devel
Reading installed packages...
Loading repository data...
Package 'libinput-devel' has source package 'libinput'.
Source package 'libinput' for package 'libinput-devel' not found.
Resolving package dependencies...
No additional space will be used or freed after the operation.
Nothing to do.