hyprland: init `hyprpaper` service

[trueNAHO]

About

This is a tracking issue for initiating the hyprpaper service.

Steps

• [x] https://github.com/danth/stylix/pull/377
• [ ] unload wallpaper

Unresolved Questions

• [ ] How to unload the wallpaper: https://github.com/danth/stylix/pull/377#issuecomment-2143073614?

[repparw]

would there be a way to add more images? (e.g second monitor)

services.hyprpaper.settings = { preload = [ "${config.stylix.image}" ]; wallpaper = [ ",${config.stylix.image}" ]; };

the wallpaper syntax is "monitor,image" where monitor has a couple identifiers to use (e.g DP-1, see Monitors on Hyprland wiki) where ,image matches all monitors with nothing already specified

my current hm setup is like this

services = {
     hyprpaper = {
       enable = true;
       settings = {
         preload = [
           "/home/repparw/Pictures/gruvbox.jpg"
           "/home/repparw/src/kbd/docs/layout_wp.png"
         ];
         wallpaper = [
           "HDMI-A-1,contain:/home/repparw/src/kbd/docs/layout_wp.png"
           ",/home/repparw/Pictures/gruvbox.jpg"
         ];
       };
     };

Dunno if this should be at this level, or it would require a refactor of stylix.image... seems overkill, maybe

[danth]

Per-monitor wallpapers aren't widely implemented and I have a feeling that when they are, each program will have its own way of selecting which monitor to apply to, so it would be difficult to create a Stylix option which supports all of them simultaneously.

[repparw]

so it would be better to do a PR for each one, then? I could look into hyprpaper as it's the one I use. Dunno if someone has an idea of what to name the options, in the interest of trying to make it consistent between targets. I guess it could be a pair with monitor identifier and which image to use.

Also, is there any way to set a value different to stylix.image in some targets? e.g use different wallpaper in lock screen? don't know if there's a nix lang way of that

[trueNAHO]

so it would be better to do a PR for each one, then? I could look into hyprpaper as it's the one I use. Dunno if someone has an idea of what to name the options, in the interest of trying to make it consistent between targets. I guess it could be a pair with monitor identifier and which image to use.

Since we currently, do not support multiple stylix.images, I am unsure whether we should support this use case for now:

• [ ] (6) Implement slideshow with post-processing capabilities
  • https://github.com/danth/stylix/issues/63
  • https://github.com/danth/stylix/pull/477#issuecomment-2254170449
  • https://github.com/danth/stylix/pull/477#issuecomment-2304904560

-- https://github.com/danth/stylix/issues/534

Even once we support specifying a directory containing images, would it not be better for end-users to implement this in their setup? It seems like we would just interface every possible use case. IIUC, the specific images are meant to be hard-coded anyway, rendering a general solution somewhat pointless.

Also, is there any way to set a value different to stylix.image in some targets? e.g use different wallpaper in lock screen? don't know if there's a nix lang way of that

Not yet:

• [ ] (5) Support individual module customizations
  • https://github.com/danth/stylix/issues/208
  • https://github.com/danth/stylix/issues/685

-- https://github.com/danth/stylix/issues/534