diff --git a/backend/love.lua b/backend/love.lua
index 9b095b8..b5f61b4 100644
--- a/backend/love.lua
+++ b/backend/love.lua
@@ -165,6 +165,11 @@ function love.resize(width, height)
 		uqt.draw.height = height
 	end
 end
+elseif uqt.input then -- fields required by uqt.input
+	uqt.draw = {
+		width = love.graphics.getWidth(),
+		height = love.graphics.getHeight()
+	}
 end
 
 -- uqt.audio
diff --git a/draw.lua b/draw.lua
index 36d3cf1..261ea5a 100644
--- a/draw.lua
+++ b/draw.lua
@@ -1,5 +1,4 @@
 -- ubiquitousse.draw
-local uqt = require((...):match("^(.-ubiquitousse)%."))
 
 --- The drawing functions: everything that affect the display/window.
 -- The coordinate system used is:
@@ -144,10 +143,12 @@ draw = {
 	scissor = function(x, y, width, height) end,
 
 	--- The drawing area width, in pixels.
+	-- @requiredby input
 	-- @impl backend
 	width = 800,
 
 	--- The drawing area height, in pixels.
+	-- @requiredby input
 	-- @impl backend
 	height = 600,
 
diff --git a/event.lua b/event.lua
index da8a5a1..c5c8f3f 100644
--- a/event.lua
+++ b/event.lua
@@ -1,7 +1,8 @@
 -- ubiquitousse.event
-local input = require((...):match("^(.-ubiquitousse)%.")..".input")
-local time = require((...):match("^(.-ubiquitousse)%.")..".time")
-local scene = require((...):match("^(.-ubiquitousse)%.")..".scene")
+local uqt = require((...):match("^(.-ubiquitousse)%."))
+local input = uqt.input
+local time = uqt.time
+local scene = uqt.scene
 
 --- The events: callback functions that will be called when something interesting occurs.
 -- Theses are expected to be redefined in the game.
@@ -16,15 +17,15 @@ return {
 	-- @tparam number dt time since last call, in miliseconds
 	-- @impl mixed
 	update = function(dt)
-		input.update(dt)
-		time.update(dt)
-		scene.update(dt)
+		if input then input.update(dt) end
+		if time then time.update(dt) end
+		if scene then scene.update(dt) end
 	end,
 
 	--- Called each time the game expect a new frame to be drawn.
 	-- The screen is expected to be cleared since last frame.
 	-- @impl backend
 	draw = function()
-		scene.draw()
+		if scene then scene.draw() end
 	end
 }
diff --git a/init.lua b/init.lua
index 90ff923..ac98c2c 100644
--- a/init.lua
+++ b/init.lua
@@ -58,6 +58,10 @@
 -- * ubiquitousse: fully-working version in Ubiquitousse, may or may not be redefined in backend
 -- The implementation level is indicated using the "@impl level" annotation.
 --
+-- Some Ubiquitousse modules require parts of other modules to work. Because every module should work when all the others are
+-- disabled, the backend may need to provide defaults values for a few fields in disabled modules required by an enabled one.
+-- Thoses fields are indicated with "@requiredby module" annotations.
+--
 -- Regarding the documentation: Ubiquitousse used LDoc/LuaDoc styled-comments, but since LDoc hates me and my code, the
 -- generated result is complete garbage, so please read the documentation directly in the comments here.
 -- Stuff you're interested in starts with triple - (e.g., "--- This functions saves the world").
diff --git a/input.lua b/input.lua
index 6832589..080ce34 100644
--- a/input.lua
+++ b/input.lua
@@ -1,6 +1,6 @@
 -- ubiquitousse.input
 local uqt = require((...):match("^(.-ubiquitousse)%."))
-local draw = require((...):match("^(.-ubiquitousse)%.")..".draw")
+local draw = uqt.draw
 
 --- Used to store inputs which were updated this frame
 -- { Input: true, ... }
diff --git a/scene.lua b/scene.lua
index 6892117..596c810 100644
--- a/scene.lua
+++ b/scene.lua
@@ -1,5 +1,6 @@
 -- ubiquitousse.scene
-local time = require((...):match("^(.-ubiquitousse)%.")..".time")
+local uqt = require((...):match("^(.-ubiquitousse)%."))
+local time = uqt.time
 
 --- Returns the file path of the given module name.
 local function getPath(modname)
@@ -51,7 +52,7 @@ scene = {
 		return {
 			name = name or "unamed", -- The scene name.
 
-			time = time.new(), -- Scene-specific TimerRegistry.
+			time = time and time.new(), -- Scene-specific TimerRegistry, if uqt.time is enabled.
 
 			enter = function(self, ...) end, -- Called when entering a scene.
 			exit = function(self) end, -- Called when exiting a scene, and not expecting to come back (scene may be unloaded).
@@ -115,7 +116,7 @@ scene = {
 	-- @impl ubiquitousse
 	update = function(dt, ...)
 		if scene.current then
-			scene.current.time.update(dt)
+			if time then scene.current.time.update(dt) end
 			scene.current:update(dt, ...)
 		end
 	end,