Package present but (it's not going to be installed)

Asked by Bilel Rahmouni

In my build log there's mentioned that the build can't occur because there are missing dependencies (libmutter-7-dev >=3.38.4) so it's not going to be installed. But the thing is i have in the same ppa this libmutter-7-dev and the version is higher than 3.38.4. So i don't understand how can the file be present and there is a missing dependence ?

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Colin Watson (cjwatson) said :

This error message means that the package you're build-depending on is itself present but can't be installed because *its* dependencies aren't available for some reason.

apt is unfortunately not very informative about this - the quickest way to figure out what's going on is usually to prepare some kind of environment with the appropriate Ubuntu release and your PPA and then ask apt to install the relevant packages, adding package names to the command line until it gives you a more useful answer. This isn't a Launchpad problem, although if you're stuck and can't figure it out then we can usually give some more detailed advice if pointed to the build in question.

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