From c37d0c057b87517ea22b057ba50e15bd09baa859 Mon Sep 17 00:00:00 2001
From: matt1432 <matt@nelim.org>
Date: Thu, 19 Oct 2023 19:36:47 -0400
Subject: [PATCH] feat(greetd): use hyprland instead of sway

---
 common/overlays/default.nix                   |   1 +
 .../overlays/patches}/regreet.patch           |   0
 common/overlays/regreet.nix                   |  20 ++++
 modules/greetd/default.nix                    | 110 +++++++++++-------
 4 files changed, 90 insertions(+), 41 deletions(-)
 rename {modules/greetd => common/overlays/patches}/regreet.patch (100%)
 create mode 100644 common/overlays/regreet.nix

diff --git a/common/overlays/default.nix b/common/overlays/default.nix
index 6d869236..e48de0ac 100644
--- a/common/overlays/default.nix
+++ b/common/overlays/default.nix
@@ -3,6 +3,7 @@
 {
   imports = [
     ./dracula-theme.nix
+    ./regreet.nix
   ];
 
   nixpkgs.overlays = [
diff --git a/modules/greetd/regreet.patch b/common/overlays/patches/regreet.patch
similarity index 100%
rename from modules/greetd/regreet.patch
rename to common/overlays/patches/regreet.patch
diff --git a/common/overlays/regreet.nix b/common/overlays/regreet.nix
new file mode 100644
index 00000000..4fbe5c31
--- /dev/null
+++ b/common/overlays/regreet.nix
@@ -0,0 +1,20 @@
+{ pkgs, ... }: {
+  programs.regreet = {
+    package = pkgs.greetd.regreet.overrideAttrs (self: super: rec {
+      version = "0.1.1-patched";
+      src = pkgs.fetchFromGitHub {
+        owner = "rharish101";
+        repo = "ReGreet";
+        rev = "61d871a0ee5c74230dfef8100d0c9bc75b309203";
+        hash = "sha256-PkQTubSm/FN3FXs9vBB3FI4dXbQhv/7fS1rXkVsTAAs=";
+      };
+      cargoDeps = super.cargoDeps.overrideAttrs (_: {
+        inherit src;
+        outputHash = "sha256-dR6veXCGVMr5TbCvP0EqyQKTG2XM65VHF9U2nRWyzfA=";
+      });
+
+      # temp fix until https://github.com/rharish101/ReGreet/issues/32 is solved
+      patches = [./patches/regreet.patch];
+    });
+  };
+}
diff --git a/modules/greetd/default.nix b/modules/greetd/default.nix
index 4056d76d..6069a211 100644
--- a/modules/greetd/default.nix
+++ b/modules/greetd/default.nix
@@ -1,55 +1,85 @@
 { lib
 , pkgs
 , config
+, hyprland
 , ...
 }: let
-  sway = "${config.programs.sway.package}/bin/sway";
-  swayConf = pkgs.writeText "greetd-sway-config" ''
-    exec "dbus-update-activation-environment --systemd DISPLAY WAYLAND_DISPLAY SWAYSOCK XDG_CURRENT_DESKTOP"
-    input "type:touchpad" {
-      tap enabled
+  regreetBin = "${lib.getExe config.programs.regreet.package}";
+  hyprBin = "${hyprland.packages.x86_64-linux.default}/bin";
+  gset = pkgs.gsettings-desktop-schemas;
+
+  css = pkgs.writeText "style.css" ''
+    window {
+      background-color: rgba(0, 0, 0, 0);
     }
-    seat seat0 xcursor_theme Dracula-cursors 24
-    xwayland disable
+  '';
 
-    default_border none
-    default_floating_border none
-    font pango:monospace 0
-    titlebar_padding 1
-    titlebar_border_thickness 0
+  paperConf = pkgs.writeText "hyprpaper.conf" ''
+    preload = ${pkgs.dracula-theme}/wallpapers/waves.png
+    wallpaper = eDP-1, ${pkgs.dracula-theme}/wallpapers/waves.png
+  '';
 
-    exec "${lib.getExe config.programs.regreet.package} -l debug; swaymsg exit"
+  hyprConf = pkgs.writeText "greetd-hypr-config" ''
+    exec-once = hyprpaper --config ${paperConf}
+
+    input {
+        kb_layout = ca
+        kb_variant = multix
+        kb_model =
+        kb_options =
+        kb_rules =
+
+        follow_mouse = 1
+
+        touchpad {
+            natural_scroll = yes
+        }
+        sensitivity = 0 # -1.0 - 1.0, 0 means no modification.
+    }
+
+    env = XCURSOR_SIZE,24
+    exec-once=hyprctl setcursor Dracula-cursors 24
+
+    misc {
+        disable_hyprland_logo = true
+        disable_splash_rendering = true
+        vfr = true
+    }
+
+    general {
+        border_size = 0
+    }
+
+    decoration {
+        blur {
+            enabled = false
+        }
+        drop_shadow = false
+    }
+
+    # FIXME: kb doesn't work
+    env = XDG_DATA_DIRS, ${gset}/share/gsettings-schemas/${gset.name}:${pkgs.gtk3}/share/gsettings-schemas/${pkgs.gtk3.name}:$XDG_DATA_DIRS
+    exec-once = squeekboard
+    exec-once = gsettings set org.gnome.desktop.a11y.applications screen-keyboard-enabled true
+
+    exec-once = ${regreetBin} -s ${css}; ${hyprBin}/hyprctl dispatch exit
   '';
 in {
-  environment.systemPackages = with pkgs; [
-    dracula-theme
-    flat-remix-icon-theme
-  ];
+  users.users.greeter = {
+    packages = with pkgs; [
+      dracula-theme
+      flat-remix-icon-theme
+      hyprpaper
+      gtk3
+      glib
+      squeekboard
+    ];
+  };
 
+  # See overlay
   programs.regreet = {
     enable = true;
-    package = pkgs.greetd.regreet.overrideAttrs (self: super: rec {
-      version = "0.1.1-patched";
-      src = pkgs.fetchFromGitHub {
-        owner = "rharish101";
-        repo = "ReGreet";
-        rev = "61d871a0ee5c74230dfef8100d0c9bc75b309203";
-        hash = "sha256-PkQTubSm/FN3FXs9vBB3FI4dXbQhv/7fS1rXkVsTAAs=";
-      };
-      cargoDeps = super.cargoDeps.overrideAttrs (_: {
-        inherit src;
-        outputHash = "sha256-dR6veXCGVMr5TbCvP0EqyQKTG2XM65VHF9U2nRWyzfA=";
-      });
-
-      # temp fix until https://github.com/rharish101/ReGreet/issues/32 is solved
-      patches = [./regreet.patch];
-    });
-
     settings = {
-      background = {
-        path = "${pkgs.dracula-theme}/wallpapers/waves.png";
-        fit = "Cover";
-      };
       GTK = {
         cursor_theme_name = "Dracula-cursors";
         font_name = "Sans Serif";
@@ -59,13 +89,11 @@ in {
     };
   };
 
-  programs.sway.enable = true;
-
   services.greetd = {
     enable = true;
     settings = {
       default_session = {
-        command = "${sway} --config ${swayConf}";
+        command = "${hyprBin}/Hyprland --config ${hyprConf}";
         user = "greeter";
       };
     };