Swappy: Patch the default color.

option/Style.nix

@@ -42,6 +42,10 @@ in {
 			accent-g = mkStrOption stylix.colors.base0A-rgb-g;
 			accent-b = mkStrOption stylix.colors.base0A-rgb-b;
 
+			accent-dec-r = mkStrOption stylix.colors.base0A-dec-r;
+			accent-dec-g = mkStrOption stylix.colors.base0A-dec-g;
+			accent-dec-b = mkStrOption stylix.colors.base0A-dec-b;
+
 			bg-r = mkStrOption stylix.colors.base00-rgb-r;
 			bg-g = mkStrOption stylix.colors.base00-rgb-g;
 			bg-b = mkStrOption stylix.colors.base00-rgb-b;

overlay/Swappy.nix

@@ -0,0 +1,16 @@
+{
+	__findFile,
+	config,
+	pkgs,
+	util,
+	...
+} @args: {
+	# SEE: https://github.com/jtheoof/swappy/issues/131
+	nixpkgs.overlays = [(final: prev: {
+		swappy = prev.swappy.overrideAttrs (old: {
+			patches = (old.patches or [ ]) ++ [
+				(import <patch/swappy/DefaultColor.nix> args).file
+			];
+		});
+	})];
+}

patch/swappy/DefaultColor.nix

@@ -0,0 +1,31 @@
+{
+	config,
+	pkgs,
+	util,
+	...
+}: let
+	color = config.module.style.color;
+	accentR = color.accent-dec-r;
+	accentG = color.accent-dec-g;
+	accentB = color.accent-dec-b;
+in {
+	file = pkgs.writeText "SwappyDefaultColorPatch" (util.trimTabs ''
+diff --git a/src/application.c b/src/application.c
+index 5b98590..86788b6 100644
+--- a/src/application.c
++++ b/src/application.c
+@@ -875,9 +875,9 @@ static gboolean is_file_from_stdin(const char *file) {
+ }
+
+ static void init_settings(struct swappy_state *state) {
+-  state->settings.r = 1;
+-  state->settings.g = 0;
+-  state->settings.b = 0;
++  state->settings.r = ${accentR};
++  state->settings.g = ${accentG};
++  state->settings.b = ${accentB};
+   state->settings.a = 1;
+   state->settings.w = state->config->line_size;
+   state->settings.t = state->config->text_size;
+	'');
+}