Re: How to handle concurrent QT versions

[Alexander Asteroth]

Then it will probably be as easy (an cleaner) to make the program into a
"real" guix package with all the correct dependencies and install this package.

Cheers,
Alex

On Thu, Mar 02 2023, 11:11:56, Andreas Enge <andreas@enge.fr> wrote:

> Am Wed, Mar 01, 2023 at 09:14:27AM +0100 schrieb Alexander Asteroth:
>> guix packages but simply made them compile (after some manual changes to
>> the code) in my current environment. If I now run a `guix package -u`
>> the libraries (from qtbase) get upgraded from 5.15.5 to 6.3.1 and the
>> program fails to run.
>
> Then I suppose that your Qt5 libraries disappear, so that the programs will
> not find them; and the newly installed Qt6 libraries will not be of help
> (they have a different name and are thus considered, well, different).
> To check, you can do "ldd name-of-my-executable", which shows you which
> libraries needed by your binary are found or not. So the solution is
> to not do a "guix package -u", or to do a
> "guix package --do-not-upgrade qtbase qtxxx qtyyy ... -u"
> (with a potentially long list of Qt packages in the middle).
>
> It might be easier then to create a separate profile with a manifest only
> for your Qt5 development, which you would then avoid to update.
> It is something I have not done myself yet, so I will have to refer you
> to the documentation.
>
> Andreas