Re: Pining for Qt 5.4
P.S.: Feeling sheepish...
Reading Frederics answer I tried the .run again.
No idea what I did wrong yesterday, this time a Qt window popped up,
asking me where I want the Qt 5.4 installation to be put.
This is exactly what I wanted. Thanks again!
Cheers,
Markus.
On 02.05.2015 15:11, Christian Seiler wrote:
> On 05/01/2015 08:28 AM, Markus-Hermann Koch wrote:
>> I would like to use Qt 5.4 for its QOpenGLWidget. However,
>> Qt 5.4 is still stuck in experimental. Being a user I now seem to have
>> several options: [...]
>>
>> What would you do?
>
> 5. Install the packages from experimental.
>
> If you really want to be on the safe side, you can do the following to
> make sure it's just Qt 5.4 from experimental and nothing else:
>
> A. Create /etc/apt/sources.list.d/experimental.list (or similar name)
> with the following contents (if you already have unstable in your
> list, just add experimental):
>
> deb http://http.debian.net/debian unstable main
> deb http://http.debian.net/debian experimental main
>
> (You can use your default mirror here instead of http.debian.net, if
> you so desire.)
>
> B. Pin unstable and experimental packages to priority -1 by default,
> so that they can't be installed by accident. Do this by creating
> /etc/apt/preferences.d/01experimental with the following contents:
>
> Package: *
> Pin: release n=experimental,o=Debian
> Pin-Priority: -1
>
> Package: *
> Pin: release n=sid,o=Debian
> Pin-Priority: -1
>
> (IMPORTANT: leave out the 2nd one if you are already using unstable,
> else no packages from unstable will be upgradable!)
>
> C. Selectively pin the Qt5 packages to a higher priority (500 is
> usually what you want) so that they are taken from experimental.
>
> You can do this in two ways: make _any_ version of the packages from
> experimental be installable or just make the _current_ version from
> experimental installable. The former has the advantage that if there are
> further bugfixes in newer Qt5.4 versions while it still isn't in
> unstable, apt will automatically be willing to upgrade to those
> versions. It has the disadvantage that if a really new and really
> experimental version of Qt5 is uploaded to experimental at some point in
> the future, APT will automatically choose that one.
>
> The priority 500 is chosen in such a way that it's the same as the
> default package priority of stable/testing/unstable, so that if one of
> those suits starts to contain a package with a higher version number
> (for example, Qt 5.4 is uploaded to unstable with some additional fixes
> at some point in the future), APT will be willing to upgrade that.
>
> In any case, create a file /etc/apt/preferences.d/50qt5.4 with the
> following contents:
>
> For making any version that's currently in experimental installable:
>
> Package: libqt5concurrent5 libqt5core5a libqt5dbus5 libqt5gui5
> libqt5network5 libqt5opengl5 libqt5opengl5-dev libqt5printsupport5
> libqt5sql5 libqt5sql5-mysql libqt5sql5-odbc libqt5sql5-psql
> libqt5sql5-sqlite libqt5sql5-tds libqt5test5 libqt5widgets5
> libqt5xml5 qt5-default qt5-qmake qtbase5-dbg qtbase5-dev
> qtbase5-dev-tools qtbase5-dev-tools-dbg qtbase5-doc-html
> qtbase5-examples qtbase5-examples-dbg qtbase5-private-dev
> Pin: release n=experimental,o=Debian
> Pin-Priority: 500
>
> For choosing the specific version that's currently in experimental:
>
> Package: libqt5concurrent5 libqt5core5a libqt5dbus5 libqt5gui5
> libqt5network5 libqt5opengl5 libqt5opengl5-dev libqt5printsupport5
> libqt5sql5 libqt5sql5-mysql libqt5sql5-odbc libqt5sql5-psql
> libqt5sql5-sqlite libqt5sql5-tds libqt5test5 libqt5widgets5
> libqt5xml5 qt5-default qt5-qmake qtbase5-dbg qtbase5-dev
> qtbase5-dev-tools qtbase5-dev-tools-dbg qtbase5-doc-html
> qtbase5-examples qtbase5-examples-dbg qtbase5-private-dev
> Pin: version 5.4.1+dfsg-2
> Pin-Priority: 500
>
> (You can include the line breaks in the package list as long as the
> continuation lines start with a space. The packages listed here are all
> the binary packages that Qt5's source package.[1])
>
> D. Test that your pinning works. Run apt-get update to update your
> package lists and then try out:
>
> apt-cache policy libqt5-core5a
> This should print 'Candidate: 5.4.1+dfsg-2" to show that APT would like
> to install that version of the package.
>
> Then try another package in experimental, e.g. libkf5config-dev (not in
> unstable/testing yet):
> apt-get policy libkf5config-dev
> This should print 'Candidate: (none)' to show that even though a version
> is available, APT doesn't want to install it, because you pinned
> experimental to -1.
>
> E. Finally, run apt-get upgrade / install of the Qt5 packages you want.
>
> Christian
>
> [1] Taken from:
> https://packages.debian.org/source/experimental/qtbase-opensource-src
>
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