blacklist/SYNTAX

The *blacklist.txt files consist of lines in the following format:

  original-package:libre-replacement:ref:id:description

original-package is Arch binary package name, libre-replacement is the
-libre package that provides and replaces the original-package or
empty if there is no compatible replacement.

ref is described by the following table:

    debian: &debian http://bugs.debian.org/
    fsf: &fsf http://libreplanet.org/wiki/List_of_software_that_does_not_respect_the_Free_System_Distribution_Guidelines#
    savannah: &sv https://savannah.nongnu.org/bugs/?
    fedora: &fedora https://bugzilla.redhat.com/show_bug.cgi?id=
    parabola: &parabola https://labs.parabola.nu/issues/

Use the value after & as the ref column value, the URL pointed by it and
concatenated with the id field should point to an issue
reporting/describing the reason for the package being blacklisted.

We should prefer fsf refs, since they are easily available for other
distros.  Hopefully some lines will move from parabola:X to fsf:Y with
the LibrePlanet wiki linking to the X issue on labs.parabola.nu.

To make reporting issues to gnu-linux-libre easier, we should explain
in the description if the package is blacklisted due to an upstream FSDG
issue, problem introduced by Arch (e.g. not including required license
text, adding optional dependency on a nonfree package), or just
branding, dependency or non-freedom-related issues which don't need
reporting to other distros.