these files provided mainly or exclusively xml-related tooling and
support for editing the manual. since docbook is now an implementation
detail (except for still being allowed in option docs, for now) these
tools are no longer necessary, useful, or even functional.
xmlformat.conf is still used by the nixpkgs documentation, so we have to
keep it. there's no reason it can't go live with the nixpkgs docs though.
The distinction between the inputs doesn't really make sense in the
mkShell context. Technically speaking, we should be using the
nativeBuildInputs most of the time.
So in order to make this function more beginner-friendly, add "packages"
as an attribute, that maps to nativeBuildInputs.
This commit also updates all the uses in nixpkgs.
This script is used to automatically fix issues within xml documentation
files.
The script is *for now* intended to be used ad-hoc, and the commits to
be examined.
A future discussion will define whether:
* This commit and scripts are kept.
* The script is extended for common use.
The biggest issue right now with the script is that it *could* in theory
destroy a valid space-less varlistentry.
The script could, in practical use, be changed and extended to normalize
some parts of the XML files, mainly:
* A common quoting style for attributes
* Fix-up some weird formatting automatically that xmlformat doesn't
catch
