diff --git a/src/retro/constants.rs b/src/retro/constants.rs
index 98119ed..faa5252 100644
--- a/src/retro/constants.rs
+++ b/src/retro/constants.rs
@@ -4,7 +4,7 @@ use super::ffi::*;
 
 // NB: commented-out stuff is from newer versions of libretro.h not yet represented in libretro-sys
 
-#[derive(TryFromPrimitive, IntoPrimitive, Debug, Clone, Copy)]
+#[derive(TryFromPrimitive, IntoPrimitive, Debug, Copy, Clone, PartialEq, Eq, Hash)]
 #[repr(u32)]
 pub enum DeviceType {
     None = DEVICE_NONE,
@@ -23,7 +23,7 @@ impl DeviceType {
     }
 }
 
-#[derive(TryFromPrimitive, IntoPrimitive, Debug)]
+#[derive(TryFromPrimitive, IntoPrimitive, Debug, Copy, Clone, PartialEq, Eq, Hash)]
 #[repr(u32)]
 pub enum InputIndex {
     Left = DEVICE_INDEX_ANALOG_LEFT,
@@ -31,7 +31,7 @@ pub enum InputIndex {
     // Button = DEVICE_INDEX_ANALOG_BUTTON,
 }
 
-#[derive(TryFromPrimitive, IntoPrimitive, Debug)]
+#[derive(TryFromPrimitive, IntoPrimitive, Debug, Copy, Clone, PartialEq, Eq, Hash)]
 #[repr(u32)]
 pub enum JoypadButton {
     B = DEVICE_ID_JOYPAD_B,
@@ -52,14 +52,14 @@ pub enum JoypadButton {
     R3 = DEVICE_ID_JOYPAD_R3,
 }
 
-#[derive(TryFromPrimitive, IntoPrimitive, Debug)]
+#[derive(TryFromPrimitive, IntoPrimitive, Debug, Copy, Clone, PartialEq, Eq, Hash)]
 #[repr(u32)]
 pub enum AnalogAxis {
     X = DEVICE_ID_ANALOG_X,
     Y = DEVICE_ID_ANALOG_Y,
 }
 
-#[derive(TryFromPrimitive, IntoPrimitive, Debug)]
+#[derive(TryFromPrimitive, IntoPrimitive, Debug, Copy, Clone, PartialEq, Eq, Hash)]
 #[repr(u32)]
 pub enum MouseButton {
     X = DEVICE_ID_MOUSE_X,
@@ -73,7 +73,7 @@ pub enum MouseButton {
     HorizWheelDown = DEVICE_ID_MOUSE_HORIZ_WHEELDOWN,
 }
 
-#[derive(TryFromPrimitive, IntoPrimitive, Debug)]
+#[derive(TryFromPrimitive, IntoPrimitive, Debug, Copy, Clone, PartialEq, Eq, Hash)]
 #[repr(u32)]
 pub enum LightGunButton {
     // ScreenX = DEVICE_ID_LIGHTGUN_SCREEN_X,
@@ -95,7 +95,7 @@ pub enum LightGunButton {
     Pause = DEVICE_ID_LIGHTGUN_PAUSE,
 }
 
-#[derive(TryFromPrimitive, IntoPrimitive, Debug)]
+#[derive(TryFromPrimitive, IntoPrimitive, Debug, Copy, Clone, PartialEq, Eq, Hash)]
 #[repr(u32)]
 pub enum PointerStat {
     X = DEVICE_ID_POINTER_X,
@@ -103,7 +103,7 @@ pub enum PointerStat {
     Pressed = DEVICE_ID_POINTER_PRESSED,
 }
 
-#[derive(TryFromPrimitive, IntoPrimitive)]
+#[derive(TryFromPrimitive, IntoPrimitive, Debug, Copy, Clone, PartialEq, Eq, Hash)]
 #[repr(u32)]
 pub enum EnvRotation {
     None = 0,
@@ -113,7 +113,7 @@ pub enum EnvRotation {
 }
 
 // TODO: experimental calls
-#[derive(TryFromPrimitive, IntoPrimitive, Debug)]
+#[derive(TryFromPrimitive, IntoPrimitive, Debug, Copy, Clone, PartialEq, Eq, Hash)]
 #[repr(u32)]
 pub enum EnvCmd {
     SetRotation = ENVIRONMENT_SET_ROTATION,