diff --git a/configen.xcodeproj/project.pbxproj b/configen.xcodeproj/project.pbxproj
index 7be49f8..2698e93 100644
--- a/configen.xcodeproj/project.pbxproj
+++ b/configen.xcodeproj/project.pbxproj
@@ -284,6 +284,7 @@
 			buildSettings = {
 				CLANG_ENABLE_MODULES = YES;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/../Frameworks";
+				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_VERSION = 4.2;
@@ -295,6 +296,7 @@
 			buildSettings = {
 				CLANG_ENABLE_MODULES = YES;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/../Frameworks";
+				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_VERSION = 4.2;
 			};
diff --git a/configen/OptionsParser.swift b/configen/OptionsParser.swift
index 4ce7cfb..ac74c97 100644
--- a/configen/OptionsParser.swift
+++ b/configen/OptionsParser.swift
@@ -45,16 +45,8 @@ final class OptionsParser {
 
   lazy var plistDictionary: [String: AnyObject] = { [unowned self] in
     let inputPlistFilePathURL = URL(fileURLWithPath: self.inputPlistFilePath)
-    guard let data = try? Data(contentsOf: inputPlistFilePathURL) else {
-      fatalError("No data at path: \(self.inputPlistFilePath)")
-    }
-
-    guard let plistDictionary = (try? PropertyListSerialization.propertyList(from: data, options: [], format: nil)) as? [String: AnyObject] else {
-      fatalError("Failed to create plist")
-    }
-
-    return plistDictionary
-    }()
+    return loadPlist(url: inputPlistFilePathURL)
+  }()
   
   lazy var sortedHints: [Hint] = { [unowned self] in
     guard let hintsString = try? String(contentsOfFile: self.inputHintsFilePath, encoding: String.Encoding.utf8) else {
@@ -71,5 +63,24 @@ final class OptionsParser {
       hints.append(Hint(variableName: separatedHints[0], type: separatedHints[1]))
     }
     return hints.sorted(by: <)
-    }()
+  }()
+  
+  private func loadPlist(url: URL) -> [String: AnyObject] {
+    guard let data = try? Data(contentsOf: url) else {
+      fatalError("No data at path: \(url.absoluteString)")
+    }
+    
+    guard var plistDictionary = (try? PropertyListSerialization.propertyList(from: data, options: [], format: nil)) as? [String: AnyObject] else {
+      fatalError("Failed to load plist from: \(url.absoluteString)")
+    }
+    let inheritKey = ":inherit_from"
+    if let inheritPath = plistDictionary.removeValue(forKey: inheritKey) {
+      guard let inheritPath = inheritPath as? String, !inheritPath.isEmpty else {
+        fatalError("Expected \"\(inheritKey)\" in \(url.absoluteString) to be a string path")
+      }
+      let inheritedPlist = loadPlist(url: URL(fileURLWithPath: inheritPath, relativeTo: url))
+      plistDictionary = inheritedPlist.merging(plistDictionary, uniquingKeysWith: { (_, override) in override })
+    }
+    return plistDictionary
+  }
 }