On Tue, 2019-11-05 at 21:17 -0500, Neal Gompa wrote: > This feature of "slotting" multiple EVRs of the same name actually > already exists in RPM. DNF currently restricts this to packages that > contain one of the following provides: > * installonlypkg(kernel) > * installonlypkg(kernel-module) > * installonlypkg(vm) > * multiversion(kernel) > > It's not terribly difficult to extend this functionality to apply > more > broadly than kernels and VM images wrapped in RPMs. :) That's a good point. I had actually noticed that the kernel was "special" in this regard. Is this hardcoded in dnf? When I grep for "installonly", I see this: /etc/dnf/dnf.conf:installonly_limit=3 I guess that's why I get 3 kernels, but I'm wondering if I can expand that set as a user? Probably not a good idea to mess with ☺ In any case, you are right that we could make it so other packages allowed installing more than one of the same name using this, but there would need to be awareness of which ones can and can't be simultaneously installed, and that's what Gentoo's slot feature achieves. For example, we could start calling python simply "python", but there would have to be a way to denote that some Python's can and can't be parallel installed (you can't parallel install a 3.6.1 and 3.6.2, but you *can* parallel install a 3.6.1 and a 3.5.2), and also that some other packages cannot be parallel installed (like grep, since it occupies /usr/bin/grep). But yeah, it does sound like dnf does have some of the code we'd need to do that.
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