this post was submitted on 02 May 2024
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Programming
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I know, I've once messed around to install a newer QT framework which was required by some package I've downloaded directly. Did you install them from the repos or manually copied the files into place? At first I thought the issues were due to compiling source code, not installing conflicting libraries.
I actually can't remember as it would have been 6+ months ago now. The issue is probably fixed already by the Debian maintainers / Elementary Team / both.
Likely something with Meson build / apt not playing nicely.
I've been compiling apps depending on newer Qt and/or kdelibs versions for ages (back when the repository was literally called "kdelibs", about 20 years ago).
This has never been an issue for me. Even with autoconf/automake, I just compiled everything to its own prefix, so it doesn't interfere with the system at all. You don't even need to fix the build system in the cases where it's broken/lacks features, if you leverage all the "path" variables (CPATH, LIBRARY_PATH, LD_LIBRARY_PATH, PKG_CONFIG_PATH, etc.). But autotools, cmake, qmake, and every build system I've used so far supports this out of the box.
Not claiming it's a skill issue, but I have to say I'm very surprised by reading any of this.
Specifically, for Debian, I was told 20 years ago by a very wise person "you never do
make installon Debian, specially not for the kernel", and taught me how to use make-kpkg (or something like that, I don't remember the name of the tool), which was a way to make a debian package of a self built kernel, which is obviously something that can't be installed to its own prefix.