On Mar 4, 2015, at 1:59 PM, René J.V. Bertin <rjvber...@gmail.com> wrote:
> @ larry >> Base doesn't have a concept of equivalence. It doesn't know that qt5-mac and >> qt5-mac-devel are interchangeable. We could implement virtual ports or >> something like that, but that's a rather larger project. > > Would be more like Debian's "replaces", no? I'm not very familiar with dpkg/apt or how it handles this problem. > @ Clemens >> There's an easy explanation: Let's assume >> while qt5 and qt5-devel provide different versions of the same software, >> they're still not binary-compatible. > > Actually, Qt makes it a point to be binary compatible between point releases, > but you have a point. > However, my initial argument concerned subports of one and the same main > port, there ought not be ABI issues there. Subports are not special. They are just organizational tools for portfile code; they have no semantic significance. For instance: - The `file` port has a subport `libmagic` that installs a library. - The `curl` port has a subport `curl-ca-bundle` that installs certificates. - The `php` port has many, many subports that install the PHP interpreters and extensions. The point is that one cannot assume *anything* about a port, its subports, and their relationship. vq _______________________________________________ macports-dev mailing list macports-dev@lists.macosforge.org https://lists.macosforge.org/mailman/listinfo/macports-dev
