Firefox package provide “application()”? What is application()? What is it purpose?
That means the package contains a desktop file. More information than you could possibly want about desktop files is in the desktop file specification.
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Okay, so what package Requires application()?
No package does that. The application() Provides is a marker for the package, identifying it as one with a desktop file. It isn’t used for dependency resolution.
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Then, what is the purpose for that marker?
It is used to identify packages that contain a desktop file. Suppose a new version of the desktop specification has been released, and you want to check Fedora packages to see if they comply with the new specification. You could run this command:
dnf repoquery --whatprovides 'application()'
Or if you want to find those you have installed on your system:
rpm -q --whatprovides 'application()'
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Thank you! 