I set up a very basic Eleventy site. I was caught up on some basic config stuff for a while. ("I want to have CSS *and* specify my source and output directories")

Reminds me that most devs don't write documentation in any meaningful way.

In a nutshell: Instructions showed me how to do each of these tasks (pass through a css directory and have different default directories for my code) but not how to combine settings in the configuration.

Documenting each configuration setting is great. Walkthroughs I read didn't outline how to combine configurations, which then lead me on 2 hours of chasing debug and error messages that didn't explain anything.