add support for localPackages

Sources/XcodeGenKit/PBXProjGenerator.swift

@@ -48,6 +48,12 @@ public class PBXProjGenerator {
             try sourceGenerator.getFileGroups(path: group)
         }
 
+        let localPackages = Set(project.localPackages)
+        for package in localPackages {
+            let path = project.basePath + Path(package).normalize()
+            sourceGenerator.createLocalPackage(path: path)
+        }
+
         let buildConfigs: [XCBuildConfiguration] = project.configs.map { config in
             let buildSettings = project.getProjectBuildSettings(config: config)
             var baseConfiguration: PBXFileReference?

Sources/XcodeGenKit/SourceGenerator.swift

@@ -41,6 +41,18 @@ class SourceGenerator {
         return object
     }
 
+    func createLocalPackage(path: Path) {
+        let fileReference = addObject(
+            PBXFileReference(
+                sourceTree: .absolute,
+                name: path.lastComponent,
+                lastKnownFileType: "folder",
+                path: path.string
+            )
+        )
+        rootGroups.insert(fileReference)
+    }
+
     func getAllSourceFiles(targetType: PBXProductType, sources: [TargetSource]) throws -> [SourceFile] {
         return try sources.flatMap { try getSourceFiles(targetType: targetType, targetSource: $0, path: project.basePath + $0.path) }
     }