add nova-plugin: in-process cxx-qt stats plugin replacing nova-stats subprocess

README.md

@@ -60,17 +60,16 @@ imports = [ inputs.nova-shell.nixosModules.default ];
 You poor thing. Here's what the Nix packaging does for you, manually:
 
 1. Build [quickshell](https://quickshell.outfoxxed.me) from source. You'll need Qt 6.
-2. Build `nova-stats` from `stats-daemon/` (`cargo build --release`). Put the binary in your PATH.
+2. Build the stats plugin from `plugin/` (`cargo build --release`). Copy `libnova_plugin.so` and `target/qml_modules/NovaStats/qmldir` into a `NovaStats/` directory on Qt's QML import path. Set `QMAKE` to your `qmake6` before building.
 3. Put `gdbus` (from glib) in your PATH. The lock screen needs it.
 4. Compile the shaders: `for f in shell/modules/*.frag; do qsb --qt6 -o "${f}.qsb" "$f"; done`
 5. Install [Symbols Nerd Font](https://www.nerdfonts.com/).
 6. Create `~/.config/nova-shell/theme.json` and `~/.config/nova-shell/modules.json`. The Nix module generates these from your config. Without it, you write JSON by hand like a human. See the theme and module tables below for keys.
-7. Run: `quickshell -p /path/to/nova-shell/shell/shell.qml`
+7. Run: `quickshell -I /path/to/qml-modules -p /path/to/nova-shell/shell/shell.qml`
 
 Optional runtime dependencies, depending on which modules you enable:
 - `wttrbar` for weather
 - `cava` for the audio visualizer on album art
-- `coreutils` (df) for disk usage
 
 If something breaks, the Nix module would have handled it. You chose this path. I respect it in the same way I respect people who free-climb skyscrapers.