Qt5 port group

[Craig Treleaven]

> On May 8, 2018, at 5:06 AM, Vincent Habchi <vince at macports.org> wrote:
> 
> Hi there,
> 
> I was in the process of modifying the Qt5 Port group to allow for choosing the Qt version one wants to link an application against using variants. However, before I go further, I’d like to know if concurrent installations of different Qt5 versions are supported in MacPorts. If not, what I do is just futile.
> 

Um, there are subports for each Qt5 version.  Picking one at random:

$ port info qt57-qtwebkit
qt57-qtwebkit @5.7.1_1 (aqua)
Variants:             debug, examples, tests, universal

Description:          Tools and Module(s) for Qt Tool Kit 5: Qt WebKit and Qt WebKit Widgets
Homepage:             http://qt.io

Extract Dependencies: xz
Build Dependencies:   python27, pkgconfig
Library Dependencies: fontconfig, icu, leveldb, webp, libxml2, libxslt, zlib, sqlite3, qt57-qtdeclarative, qt57-qtlocation, qt57-qtmultimedia, qt57-qtsensors, qt57-qtwebchannel, qt57-qtxmlpatterns, qt57-qtbase
Conflicts with:       qt3, qt3-mac, qt56-qtbase, qt58-qtbase, qt5-qtbase, qt55-qtbase, qt59-qtbase
Platforms:            macosx
License:              {LGPL-3 GPL-3 OpenSSLException}
Maintainers:          Email: mcalhoun at macports.org, GitHub: MarcusCalhoun-Lopez
                      Policy: openmaintainer

Notice that the port depends on several Qt5 ports which are all specified at the same level (“57”).  It conflicts with other versions of Qt.

Is that not sufficient?

Craig