How to set options for specific packages in LyX? Or, what does \geometry{} mean?

Question

There have been a few questions here on how to pass options to packages in LyX, especially those loaded automagically.

• Lyx: How to add option to package automatically load
• Can I change options of packages loaded by a Lyx module?

Fuhrmanator in https://tex.stackexchange.com/a/318743/42648 and https://tex.stackexchange.com/a/318745/42648 tells about using the Document > Settings > Local Layout settings and adding PackageOptions there.

PackageOptions geometry includeheadfoot
PackageOptions url hyphens

which if I understand correctly, expands to commands like \PassOptionsToPackage{hyphens}{url}

However, as Deve mentions in Can I change options of packages loaded by a Lyx module?

Use \PassOptionsToPackage. No error, but also no effect. I think this command must be used before loading the package, which I can't do as the module's preamble additions are done before the user's additions.

I also had problems passing in some of the core documentclass options (I am using KOMA-Script report class) using this method.

Further, Bernard points out in answer to footer options in Lyx that one can use \geometry{} in the document preamble to pass options to the geometry package in LyX.

My question:

Is the command \geometry specific to the geometry package, or if one can use a similar mechanism to pass options to any package. For example, \url{hyphens} instead of PackageOptions url hyphens.

What would/should be the preferred method?

Answer 1

Another option that you did not mention is in Document > Settings > Local Layout do

Provides url 1

This tells LyX not to automagically load the url package. Note that there should be 1 (true) or 0 (false) behind this option if you want to use it in a layout file. Then in the preamble you can load the url package yourself with the options you wish.