[Development] Qt 6 buildsystem support requirements

[Иван Комиссаров]

QBS generates Qt Modules file depending on the information that QMake provides about modules installed in the system to make sure you won;t be able to import module that doesn’t exist on your system.

According to the fact that you can have multiple versions of Qt (i have 3 Qt versions on my Linux machine) and they may be installed in you home dir, it is logical to store those files in your home dir (.config).

Of course, you can safely remove the whole dir, it’s just your personal configuration.

Funny that you blaming only QBS about the mess in a home dir:)

What disturbs me more is the folders like ~/.dropbox ~/.subversion ~/.designer in the root of my home dir *sign*

> 31 июля 2018 г., в 10:18, Shawn Rutledge <Shawn.Rutledge at qt.io> написал(а):
> 
> 
>> On 30 Jul 2018, at 22:30, Matthew Woehlke <mwoehlke.floss at gmail.com> wrote:
>> 
>> On a related note, "hermetic builds" is pretty ironic. Your *build*
>> might be hermetic, but bazel itself is *far* from... it's very reliant
>> on putting all its garbage in "magic locations" in your home directory,
>> unlike most build tools that only need to write to your build directory.
> 
> Speaking of which (and speaking of re-inventing the wheel)… I seem to have a lot of qbs-related files on my system despite the fact that I don’t actively use it.  (OK I tried to build some project on github once, one that is already trying to use it.)  E.g. under ~/.config/QtProject/qbs/1.10.0 it looks like some meta-info, the kind of stuff that cmake and pkg-config already has:
> 
> $ cat ~/.config/QtProject/qbs/1.10.0/profiles/qt-4-8-7/modules/Qt/phonon/phonon.qbs
> import qbs 1.0
> import '../QtModule.qbs' as QtModule
> 
> QtModule {
>    qtModuleName: "phonon"
>    Depends { name: "Qt"; submodules: ['core'] }
>    cpp.defines: ["QT_PHONON_LIB"]
>    cpp.includePaths: ["/usr/include/qt4", "/usr/include/qt4/Phonon"]
> }
> 
> I don’t know how it got there, but I prefer to have some understanding of what goes in my .config dir so that I can use a git repo to replicate the important stuff between systems (and ignore the rest, maybe even trash it sometimes).  Is there any way that mess can be avoided?  I mean really, meta-info about *system* packages going into my home dir, as if qbs could even rely on finding those files there, rather than being installed alongside the system package itself?!?
> 
> Maybe it’s better to continue depending on pkg-config, since it’s an old standard that we probably shouldn’t drop support for anyway, rather than duplicating it?
> 
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