Bug#906611: rules-xz-compression-level-too-high should be changed to package-uses-custom-compression

[Adrian Bunk <bunk@debian.org>]

Package: lintian
Version: 2.5.97
Severity: normal

There are actually two issues:

First, lintian should warn for any usage of -Z/-S/-z no matter the values.

Manual fiddling with these tends to cause future problems without
actual benefits, uses-deprecated-compression-for-data-tarball is
another example for such problems.

For having any visible effects such changes anyways have to be done
globally in the archive, not at a per-package level.

Second, debian/source/options also has to be checked.

Example:
https://sources.debian.org/src/vtk-dicom/0.7.10-1/debian/source/options/