[Request] Qt 5.x in /testing or /extra for Slackware 14.1

Clementine Jam · 10-10-2013, 03:50 PM

Qt 4.x is EOL soon and many projects migrating or planning to migrate on Qt5. So, i think that it would be a good choice to add Qt5 into -current branch for including Qt5 to Slackware 14.1.

Qt4 and Qt5 might be non-conflicting, if Qt5 to use a bit modified SlackBuild from Qt4

Code:

./configure \
  -confirm-license \
  -opensource \
  -prefix /usr/lib${LIBDIRSUFFIX}/qt5 \
  -fast \
...

Code:

# Link the shared libraries into /usr/lib:
( cd $PKG/usr/lib${LIBDIRSUFFIX}
  for file in qt5/lib/*.so* ; do
    ln -sf $file .
  done
)

Code:

mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}/pkgconfig
( cd $PKG/usr/lib${LIBDIRSUFFIX}/qt5/lib/pkgconfig
  for file in *.pc ; do
    ( cd $PKG/usr/lib${LIBDIRSUFFIX}/pkgconfig ; ln -sf /usr/lib${LIBDIRSUFFIX}/qt5/lib/pkgconfig/$file . )
  done
)

and so on.

Please, add Qt5 to the Current branch!

jon lee · 10-10-2013, 04:10 PM

One of the big changes for Qt5 is support for gstreamer 1.0. Unfortunately neither Clementine or KDE support this ATM (although I suspect KDE will with the v5.0 release to match Qt). I don't remember which one but there is at least one alternative browser which requires gstreamer 1.0.

I know Qt4 included Qt3 support (I could find only two things which actually used it- the 'make xconfig' for kernel configuration, and K3b.. and the latest git of k3b dropped this dependency).

All in all, it will take some time for everything to migrate in this direction.

andrewthomas · 10-10-2013, 09:14 PM

Quote:

Originally Posted by Clementine Jam

Please, add Qt5 to the Current branch!

Quote:

Originally Posted by jon lee

...although I suspect KDE will with the v5.0 release to match Qt).

When you start talking KDE5 then you can talk qt5

jprzybylski · 10-10-2013, 09:33 PM

To be honest, I can't think of an application that requires qt5 at the moment, so it sounds more like a cool new technology that can live in a SlackBuild until stable software starts coming out that uses it.

jon lee · 10-10-2013, 11:31 PM

At about the same time as Qt5 being used, I would like to have PyQt compiled against Python3. (It gives extra extensions that I need).

Alien Bob · 10-11-2013, 02:49 AM

Quote:

Originally Posted by jon lee

At about the same time as Qt5 being used, I would like to have PyQt compiled against Python3. (It gives extra extensions that I need).

Since Slackware has only python2.7, it will be pretty hard to compile PyQt against python3.

Eric

wildwizard · 10-11-2013, 02:55 AM

Quote:

Originally Posted by Clementine Jam

Qt4 and Qt5 might be non-conflicting, if Qt5 to use a bit modified SlackBuild from Qt4

Actually qt4 needs to be rebuilt (with changes) and a new package included for you to have both versions installed.

I've already gone through it here :-

http://www.linuxquestions.org/questi...-a-4175468237/

EDIT
Patch for qt5.Slackbuild for 5.1.1

Code:

--- qt5.SlackBuild.old  2013-07-13 09:22:00.000000000 +1000
+++ qt5.SlackBuild      2013-09-28 17:22:05.597624488 +1000
@@ -125,8 +125,6 @@
   -plugin-sql-sqlite \
   -dbus \
   -nomake examples \
-  -nomake demos \
-  -nomake docs \
   -no-separate-debug-info \
   -no-pch
   # No-precompiled-headers is ccache-friendly.

jon lee · 10-11-2013, 11:52 AM

Quote:

Originally Posted by Alien Bob

Since Slackware has only python2.7, it will be pretty hard to compile PyQt against python3.

Eric

I know... but since we're talking about a pipe dream for Slack. 15

Most modern distros have already switched to Python 3. I'm not real sure of the advantages/dependencies of sticking with Python 2. I would do it myself except it's a huge chain (Qt, Python3, sip, PyQt, KDE...).

guanx · 10-11-2013, 12:24 PM

Python 3 is essentially a different language than 2. It is not easy to switch from 2 to 3. Similarly is C++ to Java. We can install the other in additional.

jon lee · 10-13-2013, 04:11 PM

I'm not aware of many (if any) direct dependencies on python2 in Slackware.
KDE has an indirect dependency on python but the version depends on that which was used to compile PyQt.

I just came across this problem again today trying to install Openshot. Requires pygoocanvas which requires pycairo which requires python3. (and, no, the py2cairo is not sufficient).
bash-4.2# python setup.py
Error: Python >= (3, 0) is required

Most everything is migrating towards python3. I also need it for the kxstudio plugins.
Ubuntu already employs it.
And, Qt5 and python3 would be a natural together.

(Edit: Well, scratch that. Just had to use the pygoocanvas .14 tarball instead of the latest git

http://i102.photobucket.com/albums/m...psef2098e2.png

guanx · 10-13-2013, 06:23 PM

Quote:

Originally Posted by jon lee

I'm not aware of many (if any) direct dependencies on python2 in Slackware.

Possibly not many requires Python 2, but absolutely nothing (in slackware-current) requires Python 3. So why should 3 replace 2? BTW, I know at least hplip depends on Python 2.

Quote:

Originally Posted by jon lee

I just came across this problem again today trying to install Openshot. Requires pygoocanvas which requires pycairo which requires python3. (and, no, the py2cairo is not sufficient).
bash-4.2# python setup.py
Error: Python >= (3, 0) is required

I've never heard of Openshot. Why should its dependency added to slackware? -- Just downloaded the latest source (openshot-1.4.3). The README says it requires Python 2.5+, and it's Python source is incompatible with Python 3.

Quote:

Originally Posted by jon lee

Most everything is migrating towards python3.

Yes. Your wording is precise -- "is migrating", not "has migrated".
AFAIK, e.g. the physics community is far from ready for Python 3. Some fundamental softwares are even just matured on Python 2. So, what's the exact meaning of "everything" here?

Quote:

Originally Posted by jon lee

I also need it for the kxstudio plugins.

You are free to install your dependencies.

Quote:

Originally Posted by jon lee

Ubuntu already employs it.

Slackware does not have to be the same as Ubuntu. The former will never be a re-branded redistribution of Debian.

1337_powerslacker · 10-13-2013, 07:00 PM

Quote:

Originally Posted by guanx

Slackware does not have to be the same as Ubuntu. The former will never be a re-branded redistribution of Debian.

I, for one, am glad of that. IMO, there are too many things which do not work right in Ubuntu for me to even give it a serious moment's thought.

Regards,

Matt

Alien Bob · 10-14-2013, 05:44 AM

Quote:

Originally Posted by jon lee

I'm not aware of many (if any) direct dependencies on python2 in Slackware.
KDE has an indirect dependency on python but the version depends on that which was used to compile PyQt.

I just came across this problem again today trying to install Openshot. Requires pygoocanvas which requires pycairo which requires python3. (and, no, the py2cairo is not sufficient).
bash-4.2# python setup.py
Error: Python >= (3, 0) is required

Most everything is migrating towards python3. I also need it for the kxstudio plugins.
Ubuntu already employs it.
And, Qt5 and python3 would be a natural together.

(Edit: Well, scratch that. Just had to use the pygoocanvas .14 tarball instead of the latest git

http://i102.photobucket.com/albums/m...psef2098e2.png

Next time, check SlackBuilds.org first. They have a SlackBuild for OpenShot 1.4.3 on Slackware 14.0, including all the required dependencies. Building OpenShot on Slackware 14.0 using sbopkg would be dead easy.

And remember - Slackware's tools do not require Python 3. And the fact that there is no Python 3 SlackBuild on slackbuilds.org is a good indication that nobody has found a need for Python 3 yet (or a tool that requires Python 3)...

Eric

andrewthomas · 10-14-2013, 05:50 AM

Quote:

Originally Posted by Alien Bob

And remember - Slackware's tools do not require Python 3. And the fact that there is no Python 3 SlackBuild on slackbuilds.org is a good indication that nobody has found a need for Python 3 yet (or a tool that requires Python 3)...

Eric

Amen

ponce · 10-14-2013, 06:08 AM

ehm, actually there is...

but the only thing I use it with is the newer lxc (and is not even essential).