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List:       kde-mac
Subject:    Re: [KDE/Mac] Review Request 127896: make dbus optional on osx: kauth
From:       Nick Shaforostoff <shafff () ukr ! net>
Date:       2016-05-12 10:01:46
Message-ID: 20160512100146.8534.57716 () mimi ! kde ! org
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> On May 12, 2016, 6:15 a.m., Kåre Särs wrote:
> > I think this patch should not include any platform specific defines. Disabling \
> > DBus requirement on Windows might also be interesting for some projects. I \
> > propose to do something similar to what is done in kxmlgui to disable \
> > kglobalaccel. The default is to require kglobalaccel, but if you knowingly \
> > specify "-DFORCE_DISABLE_KGLOBALACCEL=1" kglobalaccel is not required or searched \
> > for.
> 
> René J.V. Bertin wrote:
> True, even if there's probably very little point in disabling DBus on a standard \
> Unix/Linux set-up. 
> But indeed, a platform-agnostic option can still be included in the options that \
> will be flipped by a platform-specific option like `APPLE_STANDALONE_BUNDLE` I've \
> proposed in a patch for Marble. 
> To come back to what I suggested earlier: even if there were to be a KF5 framework \
> that encapsulates DBus or "something more platform native" there would still be a \
> use-case for using DBus through that framework even on OS X (or MS Windows). \
> Projects like HomeBrew, MacPorts and Cygwin don't exist to replace the native \
> desktop, but to complement it; to provide an easy way to install and maintain FOSS \
> and provide a context in which those applications can run as much as possible as \
> they do on their native platform. That evidently includes DBus, but not just so \
> that Gnome apps can talk with other Gnome apps and KDE apps with other KDE apps. I \
> don't have any stats on this, but I'd expect that a good many of the users of such \
> projects use them not so much for software development per se, but as tools for \
> their actual work (often in science and/or engineering, in my impression). That \
> might very well include using Gnome/GTk apps alongside KDE applications, and in \
> that case they'd proba
 bly expect  the same kind of interoperability as those apps would have on the other \
platforms they might use.
> IOW, I don't think a distribution system that aims to provide the best possible \
> context for the applications it carries can get around using DBus. 
> But this is probably not the best place for an in-depth discussion around \
> underlying principles; that should probably be done on a ML (and ideally include a \
> DBus dev or two).

i don't see a reason behind introducing a special cmake option other than code \
coverage (test dbus and dbus-free branches with the same qt): why one should want to \
disable dbus on a system where he/she has Qt with dbus?

can you explain this to me?

regarding homebrew, i repeat: by default it installs a precompiled version of Qt \
without dbus. if user wants dbus then he/she has to have homebrew recompile whole Qt \
(takes about 1 hour). and what if kde app doesn't need any IPC? that would just \
pollute his/her system with redundant stuff. how many gtk-based apps require dbus to \
run on windows and osx?


- Nick


-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://git.reviewboard.kde.org/r/127896/#review95405
-----------------------------------------------------------


On May 12, 2016, 5:16 a.m., Nick Shaforostoff wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/127896/
> -----------------------------------------------------------
> 
> (Updated May 12, 2016, 5:16 a.m.)
> 
> 
> Review request for KDE Software on Mac OS X, KDE Frameworks, David Edmundson, and \
> Martin Gräßlin. 
> 
> Repository: kauth
> 
> 
> Description
> -------
> 
> this is the first patch to make kde frameworks build (and then work) without dbus.
> 
> this will allow homebrew users use precompiled vanilla Qt to build kde apps on osx. \
> as dbus is not a common service in osx world, kde apps on osx should use native \
> means for interprocess communication instead -- this will make them better citizens \
> in osx ecosystem. 
> 
> Diffs
> -----
> 
> CMakeLists.txt 48dc2d9 
> autotests/BackendsManager.cpp 59675b3 
> autotests/CMakeLists.txt b53d760 
> autotests/HelperTest.cpp 8050a06 
> src/CMakeLists.txt 1b6930d 
> src/ConfigureChecks.cmake d46761a 
> 
> Diff: https://git.reviewboard.kde.org/r/127896/diff/
> 
> 
> Testing
> -------
> 
> compiles fine on osx, compiles fine on linux, tests on linux still pass.
> 
> 
> Thanks,
> 
> Nick Shaforostoff
> 
> 


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      This is an automatically generated e-mail. To reply, visit:
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<blockquote style="margin-left: 1em; border-left: 2px solid #d0d0d0; padding-left: \
10px;">  <p style="margin-top: 0;">On May 12th, 2016, 6:15 a.m. UTC, <b>Kåre \
Särs</b> wrote:</p>  <blockquote style="margin-left: 1em; border-left: 2px solid \
#d0d0d0; padding-left: 10px;">  <pre style="white-space: pre-wrap; white-space: \
-moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: \
break-word;">I think this patch should not include any platform specific defines. \
Disabling DBus requirement on Windows might also be interesting for some projects. I \
propose to do something similar to what is done in kxmlgui to disable kglobalaccel. \
The default is to require kglobalaccel, but if you knowingly specify \
&quot;-DFORCE_DISABLE_KGLOBALACCEL=1&quot; kglobalaccel is not required or searched \
for.</pre>  </blockquote>




 <p>On May 12th, 2016, 8:05 a.m. UTC, <b>René J.V. Bertin</b> wrote:</p>
 <blockquote style="margin-left: 1em; border-left: 2px solid #d0d0d0; padding-left: \
10px;">  <pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: \
-pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: \
0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">True, \
even if there's probably very little point in disabling DBus on a standard Unix/Linux \
set-up.</p> <p style="padding: 0;text-rendering: inherit;margin: 0;line-height: \
inherit;white-space: inherit;">But indeed, a platform-agnostic option can still be \
included in the options that will be flipped by a platform-specific option like <code \
style="text-rendering: inherit;color: #4444cc;padding: 0;white-space: normal;margin: \
0;line-height: inherit;">APPLE_STANDALONE_BUNDLE</code> I've proposed in a patch for \
Marble.</p> <p style="padding: 0;text-rendering: inherit;margin: 0;line-height: \
inherit;white-space: inherit;">To come back to what I suggested earlier: even if \
there were to be a KF5 framework that encapsulates DBus or "something more platform \
native" there would still be a use-case for using DBus through that framework even on \
OS X (or MS Windows). Projects like HomeBrew, MacPorts and Cygwin don't exist to \
replace the native desktop, but to complement it; to provide an easy way to install \
and maintain FOSS and provide a context in which those applications can run as much \
as possible as they do on their native platform. That evidently includes DBus, but \
not just so that Gnome apps can talk with other Gnome apps and KDE apps with other \
KDE apps. I don't have any stats on this, but I'd expect that a good many of the \
users of such projects use them not so much for software development per se, but as \
tools for their actual work (often in science and/or engineering, in my impression). \
That might ver  y well include using Gnome/GTk apps alongside KDE applications, and \
in that case they'd probably expect  the same kind of interoperability as those apps \
would have on the other platforms they might use. IOW, I don't think a distribution \
system that aims to provide the best possible context for the applications it carries \
can get around using DBus.</p> <p style="padding: 0;text-rendering: inherit;margin: \
0;line-height: inherit;white-space: inherit;">But this is probably not the best place \
for an in-depth discussion around underlying principles; that should probably be done \
on a ML (and ideally include a DBus dev or two).</p></pre>  </blockquote>








</blockquote>

<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: \
-pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: \
0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">i \
don't see a reason behind introducing a special cmake option other than code coverage \
(test dbus and dbus-free branches with the same qt): why one should want to disable \
dbus on a system where he/she has Qt with dbus?</p> <p style="padding: \
0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">can \
you explain this to me?</p> <p style="padding: 0;text-rendering: inherit;margin: \
0;line-height: inherit;white-space: inherit;">regarding homebrew, i repeat: by \
default it installs a precompiled version of Qt without dbus. if user wants dbus then \
he/she has to have homebrew recompile whole Qt (takes about 1 hour). and what if kde \
app doesn't need any IPC? that would just pollute his/her system with redundant \
stuff. how many gtk-based apps require dbus to run on windows and osx?</p></pre> <br \
/>










<p>- Nick</p>


<br />
<p>On May 12th, 2016, 5:16 a.m. UTC, Nick Shaforostoff wrote:</p>








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<div>Review request for KDE Software on Mac OS X, KDE Frameworks, David Edmundson, \
and Martin Gräßlin.</div> <div>By Nick Shaforostoff.</div>


<p style="color: grey;"><i>Updated May 12, 2016, 5:16 a.m.</i></p>









<div style="margin-top: 1.5em;">
 <b style="color: #575012; font-size: 10pt;">Repository: </b>
kauth
</div>


<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
 <table width="100%" bgcolor="#ffffff" cellspacing="0" cellpadding="10" \
style="border: 1px solid #b8b5a0">  <tr>
  <td>
   <pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: \
-moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: \
break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: \
inherit;white-space: inherit;">this is the first patch to make kde frameworks build \
(and then work) without dbus.</p> <p style="padding: 0;text-rendering: \
inherit;margin: 0;line-height: inherit;white-space: inherit;">this will allow \
homebrew users use precompiled vanilla Qt to build kde apps on osx. as dbus is not a \
common service in osx world, kde apps on osx should use native means for interprocess \
communication instead -- this will make them better citizens in osx \
ecosystem.</p></pre>  </td>
 </tr>
</table>


<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
<table width="100%" bgcolor="#ffffff" cellspacing="0" cellpadding="10" style="border: \
1px solid #b8b5a0">  <tr>
  <td>
   <pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: \
-moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: \
break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: \
inherit;white-space: inherit;">compiles fine on osx, compiles fine on linux, tests on \
linux still pass.</p></pre>  </td>
 </tr>
</table>


<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
<ul style="margin-left: 3em; padding-left: 0;">

 <li>CMakeLists.txt <span style="color: grey">(48dc2d9)</span></li>

 <li>autotests/BackendsManager.cpp <span style="color: grey">(59675b3)</span></li>

 <li>autotests/CMakeLists.txt <span style="color: grey">(b53d760)</span></li>

 <li>autotests/HelperTest.cpp <span style="color: grey">(8050a06)</span></li>

 <li>src/CMakeLists.txt <span style="color: grey">(1b6930d)</span></li>

 <li>src/ConfigureChecks.cmake <span style="color: grey">(d46761a)</span></li>

</ul>

<p><a href="https://git.reviewboard.kde.org/r/127896/diff/" style="margin-left: \
3em;">View Diff</a></p>






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