diff --git a/Example-iOS/AppDelegate.swift b/Example-iOS/AppDelegate.swift
index cb672ba..7fd340b 100644
--- a/Example-iOS/AppDelegate.swift
+++ b/Example-iOS/AppDelegate.swift
@@ -15,7 +15,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 
     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
 
-        self.window = UIWindow(frame: UIScreen.main.bounds)
+        self.window = UIWindow()
 
         let listViewController:ListViewController = ListViewController()
         let navigationController:UINavigationController = UINavigationController(rootViewController: listViewController);
diff --git a/Example-iOS/Example-iOS.xcodeproj/project.pbxproj b/Example-iOS/Example-iOS.xcodeproj/project.pbxproj
index 697906a..5e97d60 100644
--- a/Example-iOS/Example-iOS.xcodeproj/project.pbxproj
+++ b/Example-iOS/Example-iOS.xcodeproj/project.pbxproj
@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 52;
+	objectVersion = 54;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -310,8 +310,11 @@
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = "io.snapkit.Example-iOS";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator xros xrsimulator";
+				SUPPORTS_MACCATALYST = NO;
+				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
 				SWIFT_VERSION = 5.0;
-				TARGETED_DEVICE_FAMILY = "1,2";
+				TARGETED_DEVICE_FAMILY = "1,2,7";
 			};
 			name = Debug;
 		};
@@ -333,8 +336,11 @@
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = "io.snapkit.Example-iOS";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator xros xrsimulator";
+				SUPPORTS_MACCATALYST = NO;
+				SUPPORTS_XR_DESIGNED_FOR_IPHONE_IPAD = NO;
 				SWIFT_VERSION = 5.0;
-				TARGETED_DEVICE_FAMILY = "1,2";
+				TARGETED_DEVICE_FAMILY = "1,2,7";
 			};
 			name = Release;
 		};
diff --git a/Sources/Constraint.swift b/Sources/Constraint.swift
index 37409b3..b890152 100644
--- a/Sources/Constraint.swift
+++ b/Sources/Constraint.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
@@ -101,7 +101,7 @@ public final class Constraint {
         for layoutFromAttribute in layoutFromAttributes {
             // get layout to attribute
             let layoutToAttribute: LayoutAttribute
-            #if os(iOS) || os(tvOS)
+            #if canImport(UIKit)
                 if layoutToAttributes.count > 0 {
                     if self.from.attributes == .edges && self.to.attributes == .margins {
                         switch layoutFromAttribute {
@@ -245,7 +245,7 @@ public final class Constraint {
         return self
     }
 
-    #if os(iOS) || os(tvOS)
+    #if canImport(UIKit)
     @discardableResult
     @available(iOS 11.0, tvOS 11.0, *)
     public func update(inset: ConstraintDirectionalInsetTarget) -> Constraint {
diff --git a/Sources/ConstraintAttributes.swift b/Sources/ConstraintAttributes.swift
index 408308b..c1a79c2 100644
--- a/Sources/ConstraintAttributes.swift
+++ b/Sources/ConstraintAttributes.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
@@ -152,7 +152,7 @@ internal struct ConstraintAttributes : OptionSet, ExpressibleByIntegerLiteral {
             attrs.append(.lastBaseline)
         }
         
-        #if os(iOS) || os(tvOS)
+        #if canImport(UIKit)
             if (self.contains(ConstraintAttributes.firstBaseline)) {
                 attrs.append(.firstBaseline)
             }
diff --git a/Sources/ConstraintConfig.swift b/Sources/ConstraintConfig.swift
index 2746b7d..9bd0f23 100644
--- a/Sources/ConstraintConfig.swift
+++ b/Sources/ConstraintConfig.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
     public typealias ConstraintInterfaceLayoutDirection = UIUserInterfaceLayoutDirection
 #else
diff --git a/Sources/ConstraintConstantTarget.swift b/Sources/ConstraintConstantTarget.swift
index 7f54907..e16f503 100644
--- a/Sources/ConstraintConstantTarget.swift
+++ b/Sources/ConstraintConstantTarget.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
@@ -40,7 +40,7 @@ extension CGSize: ConstraintConstantTarget {
 extension ConstraintInsets: ConstraintConstantTarget {
 }
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
 @available(iOS 11.0, tvOS 11.0, *)
 extension ConstraintDirectionalInsets: ConstraintConstantTarget {
 }
@@ -80,7 +80,7 @@ extension ConstraintConstantTarget {
         }
         
         if let value = self as? CGPoint {
-            #if os(iOS) || os(tvOS)
+            #if canImport(UIKit)
                 switch layoutAttribute {
                 case .left, .right, .leading, .trailing, .centerX, .leftMargin, .rightMargin, .leadingMargin, .trailingMargin, .centerXWithinMargins:
                     return value.x
@@ -110,7 +110,7 @@ extension ConstraintConstantTarget {
         }
         
         if let value = self as? ConstraintInsets {
-            #if os(iOS) || os(tvOS)
+            #if canImport(UIKit)
                 switch layoutAttribute {
                 case .left, .leftMargin:
                     return value.left
@@ -171,7 +171,7 @@ extension ConstraintConstantTarget {
             #endif
         }
         
-        #if os(iOS) || os(tvOS)
+        #if canImport(UIKit)
             if #available(iOS 11.0, tvOS 11.0, *), let value = self as? ConstraintDirectionalInsets {
                 switch layoutAttribute {
                 case .left, .leftMargin:
diff --git a/Sources/ConstraintDSL.swift b/Sources/ConstraintDSL.swift
index 20f153d..5683b7f 100644
--- a/Sources/ConstraintDSL.swift
+++ b/Sources/ConstraintDSL.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintDescription.swift b/Sources/ConstraintDescription.swift
index 3521f9f..b9d476c 100644
--- a/Sources/ConstraintDescription.swift
+++ b/Sources/ConstraintDescription.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintDirectionalInsetTarget.swift b/Sources/ConstraintDirectionalInsetTarget.swift
index 955aec3..4c3c418 100644
--- a/Sources/ConstraintDirectionalInsetTarget.swift
+++ b/Sources/ConstraintDirectionalInsetTarget.swift
@@ -21,13 +21,13 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
 import UIKit
 #else
 import AppKit
 #endif
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
 public protocol ConstraintDirectionalInsetTarget: ConstraintConstantTarget {
 }
 
diff --git a/Sources/ConstraintDirectionalInsets.swift b/Sources/ConstraintDirectionalInsets.swift
index ada8ed5..056b5c8 100644
--- a/Sources/ConstraintDirectionalInsets.swift
+++ b/Sources/ConstraintDirectionalInsets.swift
@@ -21,14 +21,14 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
 #endif
 
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     @available(iOS 11.0, tvOS 11.0, *)
     public typealias ConstraintDirectionalInsets = NSDirectionalEdgeInsets
 #endif
diff --git a/Sources/ConstraintInsetTarget.swift b/Sources/ConstraintInsetTarget.swift
index ba8a0f3..43c0220 100644
--- a/Sources/ConstraintInsetTarget.swift
+++ b/Sources/ConstraintInsetTarget.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintInsets.swift b/Sources/ConstraintInsets.swift
index 738ca05..64d781d 100644
--- a/Sources/ConstraintInsets.swift
+++ b/Sources/ConstraintInsets.swift
@@ -21,14 +21,14 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
 #endif
 
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     public typealias ConstraintInsets = UIEdgeInsets
 #else
     public typealias ConstraintInsets = NSEdgeInsets
diff --git a/Sources/ConstraintItem.swift b/Sources/ConstraintItem.swift
index a342c1d..2f92221 100644
--- a/Sources/ConstraintItem.swift
+++ b/Sources/ConstraintItem.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintLayoutGuide+Extensions.swift b/Sources/ConstraintLayoutGuide+Extensions.swift
index d429e0c..e9fd9b3 100644
--- a/Sources/ConstraintLayoutGuide+Extensions.swift
+++ b/Sources/ConstraintLayoutGuide+Extensions.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #endif
     
diff --git a/Sources/ConstraintLayoutGuide.swift b/Sources/ConstraintLayoutGuide.swift
index e3e50c8..fd89556 100644
--- a/Sources/ConstraintLayoutGuide.swift
+++ b/Sources/ConstraintLayoutGuide.swift
@@ -21,14 +21,14 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
 #endif
 
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     @available(iOS 9.0, *)
     public typealias ConstraintLayoutGuide = UILayoutGuide
 #else
diff --git a/Sources/ConstraintLayoutGuideDSL.swift b/Sources/ConstraintLayoutGuideDSL.swift
index 0007819..7e78261 100644
--- a/Sources/ConstraintLayoutGuideDSL.swift
+++ b/Sources/ConstraintLayoutGuideDSL.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintLayoutSupport.swift b/Sources/ConstraintLayoutSupport.swift
index e92e9fb..085f5cd 100644
--- a/Sources/ConstraintLayoutSupport.swift
+++ b/Sources/ConstraintLayoutSupport.swift
@@ -21,14 +21,14 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
 #endif
 
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     @available(iOS 8.0, *)
     public typealias ConstraintLayoutSupport = UILayoutSupport
 #else
diff --git a/Sources/ConstraintLayoutSupportDSL.swift b/Sources/ConstraintLayoutSupportDSL.swift
index 5d6ae89..71e1158 100644
--- a/Sources/ConstraintLayoutSupportDSL.swift
+++ b/Sources/ConstraintLayoutSupportDSL.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintMaker.swift b/Sources/ConstraintMaker.swift
index 50d7402..7c352f6 100644
--- a/Sources/ConstraintMaker.swift
+++ b/Sources/ConstraintMaker.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintMakerEditable.swift b/Sources/ConstraintMakerEditable.swift
index 4869bc2..0e08e38 100644
--- a/Sources/ConstraintMakerEditable.swift
+++ b/Sources/ConstraintMakerEditable.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
@@ -53,7 +53,7 @@ public class ConstraintMakerEditable: ConstraintMakerPrioritizable {
         return self
     }
     
-    #if os(iOS) || os(tvOS)
+    #if canImport(UIKit)
     @discardableResult
     @available(iOS 11.0, tvOS 11.0, *)
     public func inset(_ amount: ConstraintDirectionalInsetTarget) -> ConstraintMakerEditable {
diff --git a/Sources/ConstraintMakerExtendable.swift b/Sources/ConstraintMakerExtendable.swift
index d834649..b30688e 100644
--- a/Sources/ConstraintMakerExtendable.swift
+++ b/Sources/ConstraintMakerExtendable.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintMakerFinalizable.swift b/Sources/ConstraintMakerFinalizable.swift
index 4e1379e..8342476 100644
--- a/Sources/ConstraintMakerFinalizable.swift
+++ b/Sources/ConstraintMakerFinalizable.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintMakerPrioritizable.swift b/Sources/ConstraintMakerPrioritizable.swift
index 5af5303..05451e6 100644
--- a/Sources/ConstraintMakerPrioritizable.swift
+++ b/Sources/ConstraintMakerPrioritizable.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintMakerRelatable+Extensions.swift b/Sources/ConstraintMakerRelatable+Extensions.swift
index 9fca160..bfde272 100644
--- a/Sources/ConstraintMakerRelatable+Extensions.swift
+++ b/Sources/ConstraintMakerRelatable+Extensions.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintMakerRelatable.swift b/Sources/ConstraintMakerRelatable.swift
index 7889532..0a3d5ee 100644
--- a/Sources/ConstraintMakerRelatable.swift
+++ b/Sources/ConstraintMakerRelatable.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintMultiplierTarget.swift b/Sources/ConstraintMultiplierTarget.swift
index 6fecd33..ac537ba 100644
--- a/Sources/ConstraintMultiplierTarget.swift
+++ b/Sources/ConstraintMultiplierTarget.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintOffsetTarget.swift b/Sources/ConstraintOffsetTarget.swift
index bd9e0a1..6ec1107 100644
--- a/Sources/ConstraintOffsetTarget.swift
+++ b/Sources/ConstraintOffsetTarget.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintPriority.swift b/Sources/ConstraintPriority.swift
index f9dab16..bf90693 100644
--- a/Sources/ConstraintPriority.swift
+++ b/Sources/ConstraintPriority.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintPriorityTarget.swift b/Sources/ConstraintPriorityTarget.swift
index 064f750..1aa701e 100644
--- a/Sources/ConstraintPriorityTarget.swift
+++ b/Sources/ConstraintPriorityTarget.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
@@ -74,7 +74,7 @@ extension CGFloat: ConstraintPriorityTarget {
     
 }
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
 extension UILayoutPriority: ConstraintPriorityTarget {
 
     public var constraintPriorityTargetValue: Float {
diff --git a/Sources/ConstraintRelatableTarget.swift b/Sources/ConstraintRelatableTarget.swift
index d517a61..df04464 100644
--- a/Sources/ConstraintRelatableTarget.swift
+++ b/Sources/ConstraintRelatableTarget.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
@@ -55,7 +55,7 @@ extension CGPoint: ConstraintRelatableTarget {
 extension ConstraintInsets: ConstraintRelatableTarget {
 }
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
 @available(iOS 11.0, tvOS 11.0, *)
 extension ConstraintDirectionalInsets: ConstraintRelatableTarget {
 }
diff --git a/Sources/ConstraintRelation.swift b/Sources/ConstraintRelation.swift
index 446aaf7..643d499 100644
--- a/Sources/ConstraintRelation.swift
+++ b/Sources/ConstraintRelation.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintView+Extensions.swift b/Sources/ConstraintView+Extensions.swift
index e0f71c1..1225c04 100644
--- a/Sources/ConstraintView+Extensions.swift
+++ b/Sources/ConstraintView+Extensions.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/ConstraintView.swift b/Sources/ConstraintView.swift
index 6ff8a76..1203300 100644
--- a/Sources/ConstraintView.swift
+++ b/Sources/ConstraintView.swift
@@ -21,14 +21,14 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
 #endif
 
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     public typealias ConstraintView = UIView
 #else
     public typealias ConstraintView = NSView
diff --git a/Sources/ConstraintViewDSL.swift b/Sources/ConstraintViewDSL.swift
index a0187f9..8567e54 100644
--- a/Sources/ConstraintViewDSL.swift
+++ b/Sources/ConstraintViewDSL.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/Debugging.swift b/Sources/Debugging.swift
index a78579a..f4120b2 100644
--- a/Sources/Debugging.swift
+++ b/Sources/Debugging.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
@@ -89,7 +89,7 @@ private func descriptionForRelation(_ relation: LayoutRelation) -> String {
 }
 
 private func descriptionForAttribute(_ attribute: LayoutAttribute) -> String {
-    #if os(iOS) || os(tvOS)
+    #if canImport(UIKit)
         switch attribute {
         case .notAnAttribute:       return "notAnAttribute"
         case .top:                  return "top"
diff --git a/Sources/LayoutConstraint.swift b/Sources/LayoutConstraint.swift
index 5425ea8..607616d 100644
--- a/Sources/LayoutConstraint.swift
+++ b/Sources/LayoutConstraint.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/LayoutConstraintItem.swift b/Sources/LayoutConstraintItem.swift
index 9b61d18..4f41b5d 100644
--- a/Sources/LayoutConstraintItem.swift
+++ b/Sources/LayoutConstraintItem.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #else
     import AppKit
diff --git a/Sources/Typealiases.swift b/Sources/Typealiases.swift
index ded96cc..c0e6982 100644
--- a/Sources/Typealiases.swift
+++ b/Sources/Typealiases.swift
@@ -23,7 +23,7 @@
 
 import Foundation
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #if swift(>=4.2)
     typealias LayoutRelation = NSLayoutConstraint.Relation
diff --git a/Sources/UILayoutSupport+Extensions.swift b/Sources/UILayoutSupport+Extensions.swift
index 8e7644c..801cc3c 100644
--- a/Sources/UILayoutSupport+Extensions.swift
+++ b/Sources/UILayoutSupport+Extensions.swift
@@ -21,7 +21,7 @@
 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 //  THE SOFTWARE.
 
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
     import UIKit
 #endif
 
diff --git a/Tests/SnapKitTests/Tests.swift b/Tests/SnapKitTests/Tests.swift
index eaaf231..99ec633 100644
--- a/Tests/SnapKitTests/Tests.swift
+++ b/Tests/SnapKitTests/Tests.swift
@@ -1,4 +1,4 @@
-#if os(iOS) || os(tvOS)
+#if canImport(UIKit)
 import UIKit
 typealias View = UIView
 extension View {
@@ -453,7 +453,7 @@ class SnapKitTests: XCTestCase {
         XCTAssertEqual(constraints[3].constant, -25, "Should be -25")
     }
     
-    #if os(iOS) || os(tvOS)
+    #if canImport(UIKit)
     @available(iOS 11.0, tvOS 11.0, *)
     func testConstraintDirectionalInsetsAsImpliedEqualToConstraints() {
         let view = View()
@@ -481,7 +481,7 @@ class SnapKitTests: XCTestCase {
     }
     #endif
 
-    #if os(iOS) || os(tvOS)
+    #if canImport(UIKit)
     @available(iOS 11.0, tvOS 11.0, *)
     func testConstraintDirectionalInsetsAsConstraintsConstant() {
         let view = View()
@@ -509,7 +509,7 @@ class SnapKitTests: XCTestCase {
     }
     #endif
 
-    #if os(iOS) || os(tvOS)
+    #if canImport(UIKit)
     @available(iOS 11.0, tvOS 11.0, *)
     func testConstraintDirectionalInsetsFallBackForNonDirectionalConstraints() {
         let view = View()
@@ -638,7 +638,7 @@ class SnapKitTests: XCTestCase {
         XCTAssert(toAttributes == [.top, .leading, .bottom, .trailing])
     }
     
-    #if os(iOS) || os(tvOS)
+    #if canImport(UIKit)
     func testEdgesToMargins() {
         var fromAttributes = Set<LayoutAttribute>()
         var toAttributes = Set<LayoutAttribute>()