[WiP] gtk-doc: patch the on-line DocBook XSL paths to the local

[amiloradovsky]

This is what's done in Guix, so gtkdoc-mkhtml would in no case even try to reach for the Internet.
Also removed dblatex, because it was never enabled and causes circular dependencies if it is.
The --disable-scrollkeeper configure flag isn't recognized by now.
And doCheck should be left alone, as long as the tests pass.

Motivation for this change

Cleaning up, robustness.

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Assured whether relevant documentation is up to date
• Fits CONTRIBUTING.md.

---

The [WiP] tag is because I couldn't test the impact on the other packages due to the limits of my hardware and Internet connection, and also because much of those packages fail for the deprecation warnings, not sure what that means.

[jtojnar]

The URI is, in the first place, an identifier of the stylesheet; the method the stylesheet will be obtained is independent of this. The primary source for locating the resources is the XML catalog; the fact that the URI can be used as a web URL is secondary and should not bother us – we, as packagers, are responsible for making the proper catalogs available.

I like the idea of limiting the scope where docbook-xsl is available to gtk-doc. In nixpkgs, sometimes the runtime dependencies of build tools are made available through dependencies of the depending package. This is usually done when the dependency is only used for a specific subsystem of the build tool (e.g. PDF generation) and we do not want to increase the closure of the tool for people who only need HTML export. However, since DocBook support will almost always be used, adding the stylesheet as a direct dependency to gtk-doc makes sense.

I am not very fond of patching over the URI with store path directly, though. I would rather rely on the catalogs still (perhaps using wrapProgram). The path you used is no longer the correct one.

[infinisil]

Status on this? If there's no interest anymore we should close this

[stale]

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[infinisil]

Closing due to inactivity