Comment 6 for bug 1881374

> There used to be an "Install" button always displayed for local packages, but it actually did not work if the package was already installed.

I don't think this is correct - I used to use the install button to install updates from a .deb for both VSCode and Discord (and a few others I've since forgotten). This workflow broke when I upgraded Ubuntu, with the newer Snap Store presenting a remove button instead.