Having trouble running tauri app from source

I filed an issue here: Bug: Running tauri app from nix devshell results in unstyled content · Issue #5005 · readest/readest · GitHub

Essentially, I pushed a fix for the project’s devshell, but somehow something broke, and now trying to run pnpm tauri dev results in unstyled content. I’ve been banging my head against this issue for about a week, so help would be greatly appreciated.