There's a merged pull request on the void-packages repository

gtk{+3,4}: move gtk-icon-browser to demo subpackage
https://github.com/void-linux/void-packages/pull/49862

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cc: @sgn 

Upstream, both gtk3-icon-browser and gtk4-icon-browser are considered demos and are are disabled if `-Dbuild-demos=false` is passed. For reference, Arch puts it in gtk4-icon-browser gtk4-demos, Fedora puts it in gtk4-devel-tools, Debian puts it in gtk-4-examples. The same is the case for gtk+3 (although Fedora puts the gtk+3 demos in gtk3-devel).

If moving them is an issue though, please let me know.

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