Add option to use slick-greeter with lightdm (#1970)

archinstall/default_profiles/desktops/budgie.py

@@ -23,4 +23,4 @@ class BudgieProfile(XorgProfile):
 
 	@property
 	def default_greeter_type(self) -> Optional[GreeterType]:
-		return GreeterType.Lightdm
+		return GreeterType.LightdmSlick

archinstall/default_profiles/profile.py

@@ -31,7 +31,8 @@ class ProfileType(Enum):
 
 
 class GreeterType(Enum):
-	Lightdm = 'lightdm'
+	Lightdm = 'lightdm-gtk-greeter'
+	LightdmSlick = 'lightdm-slick-greeter'
 	Sddm = 'sddm'
 	Gdm = 'gdm'
 	Ly = 'ly'

archinstall/lib/profile/profiles_handler.py

@@ -173,6 +173,9 @@ class ProfileHandler:
 		service = None
 
 		match greeter:
+			case GreeterType.LightdmSlick:
+				packages = ['lightdm', 'lightdm-slick-greeter']
+				service = ['lightdm']
 			case GreeterType.Lightdm:
 				packages = ['lightdm', 'lightdm-gtk-greeter']
 				service = ['lightdm']
@@ -191,6 +194,17 @@ class ProfileHandler:
 		if service:
 			install_session.enable_service(service)
 
+		# slick-greeter requires a config change
+		if greeter == GreeterType.LightdmSlick:
+			path = install_session.target.joinpath('etc/lightdm/lightdm.conf')
+			with open(path, 'r') as file:
+				filedata = file.read()
+
+			filedata = filedata.replace('#greeter-session=example-gtk-gnome', 'greeter-session=lightdm-slick-greeter')
+
+			with open(path, 'w') as file:
+				file.write(filedata)
+
 	def install_gfx_driver(self, install_session: 'Installer', driver: Optional[GfxDriver]):
 		try: