Ok, didn't realize that those installed by the OS were for the OS itself and not for the benefit of developers :p. Thanks and yes the xkcd drawing says it all.
Well, historically they were one and the same: for the OS and for development. However with that setup, problems arise if the developer wants / needs to use libraries or frameworks that conflict with what the OS needs or offers.
Part of the reason that containers have become so popular / useful is isolation of the OS and "infrastructure" from the development or production space.
