diff --git a/Cargo.toml b/Cargo.toml
index f45bdc3..cee5ab5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,6 +14,10 @@ authors = [
 edition = "2018"
 license = "MIT OR Apache-2.0"
 
+[features]
+default = ["opengl"]
+opengl = ["uuid"]
+
 [dependencies]
 keyboard-types = { version = "0.6.1", default-features = false }
 raw-window-handle = "0.4.2"
@@ -26,6 +30,7 @@ nix = "0.22.0"
 
 [target.'cfg(target_os="windows")'.dependencies]
 winapi = { version = "0.3.8", features = ["libloaderapi", "winuser", "windef", "minwindef", "guiddef", "combaseapi", "wingdi", "errhandlingapi"] }
+uuid = { version = "0.8", features = ["v4"], optional = true }
 
 [target.'cfg(target_os="macos")'.dependencies]
 cocoa = "0.24.0"
diff --git a/src/gl/macos.rs b/src/gl/macos.rs
index 28f56c1..0610879 100644
--- a/src/gl/macos.rs
+++ b/src/gl/macos.rs
@@ -18,7 +18,7 @@ use core_foundation::string::CFString;
 
 use objc::{msg_send, sel, sel_impl};
 
-use crate::{GlConfig, GlError, Profile};
+use super::{GlConfig, GlError, Profile};
 
 pub type CreationFailedError = ();
 pub struct GlContext {
@@ -28,10 +28,9 @@ pub struct GlContext {
 
 impl GlContext {
     pub unsafe fn create(
-        parent: &impl HasRawWindowHandle,
-        config: GlConfig,
+        parent: &impl HasRawWindowHandle, config: GlConfig,
     ) -> Result<GlContext, GlError> {
-        let handle = if let RawWindowHandle::MacOS(handle) = parent.raw_window_handle() {
+        let handle = if let RawWindowHandle::AppKit(handle) = parent.raw_window_handle() {
             handle
         } else {
             return Err(GlError::InvalidWindowHandle);
diff --git a/src/gl/lib.rs b/src/gl/mod.rs
similarity index 88%
rename from src/gl/lib.rs
rename to src/gl/mod.rs
index 9c43878..5af8634 100644
--- a/src/gl/lib.rs
+++ b/src/gl/mod.rs
@@ -11,7 +11,7 @@ use win as platform;
 #[cfg(target_os = "linux")]
 mod x11;
 #[cfg(target_os = "linux")]
-use crate::x11 as platform;
+use self::x11 as platform;
 
 #[cfg(target_os = "macos")]
 mod macos;
@@ -73,13 +73,10 @@ pub struct GlContext {
 
 impl GlContext {
     pub unsafe fn create(
-        parent: &impl HasRawWindowHandle,
-        config: GlConfig,
+        parent: &impl HasRawWindowHandle, config: GlConfig,
     ) -> Result<GlContext, GlError> {
-        platform::GlContext::create(parent, config).map(|context| GlContext {
-            context,
-            phantom: PhantomData,
-        })
+        platform::GlContext::create(parent, config)
+            .map(|context| GlContext { context, phantom: PhantomData })
     }
 
     pub unsafe fn make_current(&self) {
diff --git a/src/gl/win.rs b/src/gl/win.rs
index 5594ae9..57982c9 100644
--- a/src/gl/win.rs
+++ b/src/gl/win.rs
@@ -18,7 +18,7 @@ use winapi::um::winuser::{
     UnregisterClassW, CS_OWNDC, CW_USEDEFAULT, WNDCLASSW,
 };
 
-use crate::{GlConfig, GlError, Profile};
+use super::{GlConfig, GlError, Profile};
 
 // See https://www.khronos.org/registry/OpenGL/extensions/ARB/WGL_ARB_create_context.txt
 
@@ -78,10 +78,9 @@ extern "C" {
 
 impl GlContext {
     pub unsafe fn create(
-        parent: &impl HasRawWindowHandle,
-        config: GlConfig,
+        parent: &impl HasRawWindowHandle, config: GlConfig,
     ) -> Result<GlContext, GlError> {
-        let handle = if let RawWindowHandle::Windows(handle) = parent.raw_window_handle() {
+        let handle = if let RawWindowHandle::Win32(handle) = parent.raw_window_handle() {
             handle
         } else {
             return Err(GlError::InvalidWindowHandle);
@@ -267,12 +266,7 @@ impl GlContext {
         wglSwapIntervalEXT.unwrap()(config.vsync as i32);
         wglMakeCurrent(hdc, std::ptr::null_mut());
 
-        Ok(GlContext {
-            hwnd,
-            hdc,
-            hglrc,
-            gl_library,
-        })
+        Ok(GlContext { hwnd, hdc, hglrc, gl_library })
     }
 
     pub unsafe fn make_current(&self) {
diff --git a/src/gl/x11.rs b/src/gl/x11.rs
index ced977d..b31bffc 100644
--- a/src/gl/x11.rs
+++ b/src/gl/x11.rs
@@ -6,7 +6,7 @@ use raw_window_handle::{HasRawWindowHandle, RawWindowHandle};
 use x11::glx;
 use x11::xlib;
 
-use crate::{GlConfig, GlError, Profile};
+use super::{GlConfig, GlError, Profile};
 
 mod errors;
 
@@ -57,8 +57,7 @@ pub struct GlContext {
 
 impl GlContext {
     pub unsafe fn create(
-        parent: &impl HasRawWindowHandle,
-        config: GlConfig,
+        parent: &impl HasRawWindowHandle, config: GlConfig,
     ) -> Result<GlContext, GlError> {
         let handle = if let RawWindowHandle::Xlib(handle) = parent.raw_window_handle() {
             handle
@@ -102,18 +101,14 @@ impl GlContext {
             error_handler.check()?;
 
             if n_configs <= 0 {
-                return Err(GlError::CreationFailed(
-                    CreationFailedError::InvalidFBConfig,
-                ));
+                return Err(GlError::CreationFailed(CreationFailedError::InvalidFBConfig));
             }
 
             #[allow(non_snake_case)]
             let glXCreateContextAttribsARB: GlXCreateContextAttribsARB = unsafe {
                 let addr = get_proc_address("glXCreateContextAttribsARB");
                 if addr.is_null() {
-                    return Err(GlError::CreationFailed(
-                        CreationFailedError::GetProcAddressFailed,
-                    ));
+                    return Err(GlError::CreationFailed(CreationFailedError::GetProcAddressFailed));
                 } else {
                     std::mem::transmute(addr)
                 }
@@ -123,9 +118,7 @@ impl GlContext {
             let glXSwapIntervalEXT: GlXSwapIntervalEXT = unsafe {
                 let addr = get_proc_address("glXSwapIntervalEXT");
                 if addr.is_null() {
-                    return Err(GlError::CreationFailed(
-                        CreationFailedError::GetProcAddressFailed,
-                    ));
+                    return Err(GlError::CreationFailed(CreationFailedError::GetProcAddressFailed));
                 } else {
                     std::mem::transmute(addr)
                 }
@@ -159,18 +152,14 @@ impl GlContext {
             error_handler.check()?;
 
             if context.is_null() {
-                return Err(GlError::CreationFailed(
-                    CreationFailedError::ContextCreationFailed,
-                ));
+                return Err(GlError::CreationFailed(CreationFailedError::ContextCreationFailed));
             }
 
             unsafe {
                 let res = glx::glXMakeCurrent(display, handle.window, context);
                 error_handler.check()?;
                 if res == 0 {
-                    return Err(GlError::CreationFailed(
-                        CreationFailedError::MakeCurrentFailed,
-                    ));
+                    return Err(GlError::CreationFailed(CreationFailedError::MakeCurrentFailed));
                 }
 
                 glXSwapIntervalEXT(display, handle.window, config.vsync as i32);
@@ -178,17 +167,11 @@ impl GlContext {
 
                 if glx::glXMakeCurrent(display, 0, std::ptr::null_mut()) == 0 {
                     error_handler.check()?;
-                    return Err(GlError::CreationFailed(
-                        CreationFailedError::MakeCurrentFailed,
-                    ));
+                    return Err(GlError::CreationFailed(CreationFailedError::MakeCurrentFailed));
                 }
             }
 
-            Ok(GlContext {
-                window: handle.window,
-                display,
-                context,
-            })
+            Ok(GlContext { window: handle.window, display, context })
         })
     }
 
diff --git a/src/lib.rs b/src/lib.rs
index 5a61586..46a3695 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -12,6 +12,9 @@ mod window;
 mod window_info;
 mod window_open_options;
 
+#[cfg(feature = "opengl")]
+pub mod gl;
+
 pub use event::*;
 pub use mouse_cursor::MouseCursor;
 pub use window::*;