This plugin is a modified version of Hyprland's Master layout.

The primary change is that it allows an arbitrary number of non-master 'stacks'. This can be changed dynamically per-workspace.

The layout is sort of a combination of XMonad's 'MultiColumns' and Hyprland's Master layout.

Default values are meant to produce a similar experience to the existing Master layout.

plugin {
  nstack {
    layout {
      orientation=left
      new_on_top=0
      new_is_master=1
      no_gaps_when_only=0
      special_scale_factor=0.8
      inherit_fullscreen=1
      stacks=2
      center_single_master=0
      mfact=0.5
    }
  }
}

• stacks The number of total stacks, including the master.
• mfact If this is set to 0 the master is the same size as the stacks. So if there is one master and 2 stacks they are all 1/3rd of the screen width(or height). Master and 3 stacks they are all 1/4th etc.
• center_single_master When there is a single window on the screen it is centered instead of taking up the entire monitor. This replaces the existing always_center_master and has slightly different behavior.

Two new dispatchers

• resetsplits Reset all the window splits to default sizes.
• setstackcount Change the number of stacks for the current workspace. Windows will be re-tiled to fit the new stack count.

Two new-ish orientations

• orientationhcenter Master is horizontally centered with stacks to the left and right.
• orientationvcenter Master is vertically centered with stacks on the top and bottom.
• orientationcenter An alias for orientationhcenter

Hyprland plugins basically have to be user-compiled and loaded. You probably need to compile and install hyprland yourself (if not using a package that exports the headers, e.g. the one on Arch's official repos).

If your package does not export headers, see the this part of the hyprland wiki

Then:

1. Build hyprNStack
   • make
2. Copy the resulting nstackLayoutPlugin.so to some place
   • cp nstackLayoutPlugin.so ~/.config/hypr/plugins
3. Modify your hyprland.conf to load the plugin
   • exec-once=hyprctl plugin load $HOME/.config/hypr/plugins/nstackLayoutPlugin.so
4. Set your hyprland layout to nstack.

• Improve mouse resizing of stacks
• Improve drag and drop rearranging of windows in and between stacks
• Allow resizing of single master window