v4 cli not seeing the classes in my html

[samf]

I have a super simple page I'm trying to style with tailwindcss v4. Running "npx tailwindcss -i content/main.css -o public/main.css" works, but none of the classes I'm using are in the main.css file.

I tried chmoding my index.html file to 0, and I do get an error, so I think the CLI is at least opening the file. I've also tried messing around with the source() function in the @include statement, but never got it to work.

Is there a way I can debug this?

I'm not super experienced with this kind of thing either, so it could easily be something I've misconfigured. Let me know what you'd like to see. But other than my main.css, I don't really have any config. Here is my main.css as it is:

@import "tailwindcss";

[wongjn]

Could you provide a project that reproduces the unexpected behavior please?

[samf]

Hmm, very strange. This is on a mac running 15.1.1.

I tried "npx serve public", which I hadn't done before, but had the same failure.

I'm stumped at the moment...

[samf]

I tried this on a Linux instance, and had the same problem. This instance had roughly the same dotfiles that I have in my home directory on my mac, so I created a new user on the Linux instance and now it's working!

I don't have much of an idea of how to debug this at the moment. Can anyone think of any per-user config files or environment variables that could be affecting "npx @tailwindcss/cli ..."?

[samf]

I've tried running npx as env -i PATH=$PATH HOME=/tmp/emptydir npx ... and I still get the same failure. I don't understand what it is about my login environment that could be borking this.

[samf]

Good grief, I think I found it.

Under my home directory, I have a .gitignore file that contains only *. That's what's keeping the tailwindcss cli from processing my index.html. I remove my .gitignore file, and now it works.

I also tried cloning my v4bug project under /tmp, and that worked fine.

I'm a little confused. The v4bug directory is under git control, and thus I wouldn't think that a .gitignore file above the "root" would affect things. Maybe tailwindcss is walking up the tree and processing all .gitignore files it finds?

If anyone is curious, my .gitignore excludes everything, so that I can track my dotfiles and other things under git, and I have to explicitly git add ... anything that I want to track. It has always worked fine for me, or at least it has up to now.