Lintian tag information: debian-control-file-is-a-symlink (type: warning)

Description (from lintian-explain-tags)

The debian/control file is a symbolic link.

It is not recommended to use anything other than plain files for the
required source files. Using links makes it harder to check and manipulate
sources automatically.

If the file must be available under multiple names, please make
debian/control the real file and let the other names point to it.

Visibility: warning
Show-Always: no
Check: debian/control/link

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