diff --git a/CMakeLists.txt b/CMakeLists.txt
index 029f3ffa337..45ba75c63bf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,18 +6,19 @@
 # See http://swift.org/LICENSE.txt for license information
 # See http://swift.org/CONTRIBUTORS.txt for Swift project authors
 
+cmake_minimum_required(VERSION 3.19)
+
+if(POLICY CMP0077)
+  cmake_policy(SET CMP0077 NEW)
+endif()
+
 if(POLICY CMP0091)
   cmake_policy(SET CMP0091 NEW)
 endif()
 
-cmake_minimum_required(VERSION 3.19)
-
-list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules)
-
 project(SwiftPM LANGUAGES C Swift)
 
 option(BUILD_SHARED_LIBS "Build shared libraries by default" YES)
-option(FIND_PM_DEPS "Search for all external Package Manager dependencies" YES)
 
 set(CMAKE_Swift_LANGUAGE_VERSION 5)
 set(CMAKE_Swift_MODULE_DIRECTORY ${CMAKE_BINARY_DIR}/swift)
@@ -27,32 +28,131 @@ set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
 
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules)
 set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreadedDLL)
 set(CMAKE_POSITION_INDEPENDENT_CODE ${BUILD_SHARED_LIBS})
 
-if(FIND_PM_DEPS)
-  find_package(SwiftSystem CONFIG REQUIRED)
-  find_package(TSC CONFIG REQUIRED)
+# Toolchain Vended dependencies
+find_package(dispatch QUIET)
+find_package(Foundation QUIET)
+
+include(FetchContent)
+
+set(_SPM_SAVED_BUILD_TESTING ${BUILD_TESTING})
+set(_SPM_SAVED_BUILD_EXAMPLES ${BUILD_EXAMPLES})
+set(_SPM_VENDOR_DEPENDENCIES)
+
+set(BUILD_EXAMPLES NO)
+set(BUILD_TESTING NO)
+
+find_package(ArgumentParser CONFIG)
+if(NOT ArgumentParser_FOUND)
+  message(STATUS "Vending swift-argument-parser")
+  FetchContent_Declare(ArgumentParser
+    GIT_REPOSITORY https://github.com/apple/swift-argument-parser
+    GIT_TAG 1.2.3)
+  list(APPEND _SPM_VENDOR_DEPENDENCIES ArgumentParser)
+endif()
+
+find_package(TSC CONFIG)
+if(NOT TSC_FOUND)
+  message(STATUS "Vending swift-tools-support-core")
+  FetchContent_Declare(ToolsSupportCore
+    GIT_REPOSITORY https://github.com/apple/swift-tools-support-core
+    GIT_TAG main)
+  list(APPEND _SPM_VENDOR_DEPENDENCIES ToolsSupportCore)
+endif()
 
-  find_package(LLBuild CONFIG)
-  if(NOT LLBuild_FOUND)
+find_package(LLBuild CONFIG)
+if(NOT LLBuild_FOUND)
+  if(APPLE)
     find_package(LLBuild REQUIRED)
+  else()
+    message(STATUS "Vending swift-llbuild")
+    set(LLBUILD_SUPPORT_BINDINGS Swift)
+    FetchContent_Declare(LLBuild
+      GIT_REPOSITORY https://github.com/apple/swift-llbuild
+      GIT_TAG main)
+    list(APPEND _SPM_VENDOR_DEPENDENCIES LLBuild)
   endif()
+endif()
 
-  find_package(ArgumentParser CONFIG REQUIRED)
-  find_package(SwiftDriver CONFIG REQUIRED)
-  find_package(SwiftCollections CONFIG REQUIRED)
-  find_package(SwiftASN1 CONFIG REQUIRED)
-  find_package(SwiftCertificates CONFIG REQUIRED)
-  find_package(SwiftCrypto CONFIG REQUIRED)
+find_package(SwiftASN1 CONFIG)
+if(NOT SwiftASN1_FOUND)
+  message(STATUS "Vending swift-asn1")
+  FetchContent_Declare(ASN1
+    GIT_REPOSITORY https://github.com/apple/swift-asn1
+    GIT_TAG 1.1.0)
+  list(APPEND _SPM_VENDOR_DEPENDENCIES ASN1)
+endif()
+
+find_package(SwiftCertificates CONFIG)
+if(NOT SwiftCertificates_FOUND)
+  message(STATUS "Vending swift-certificates")
+  FetchContent_Declare(Certificates
+    GIT_REPOSITORY https://github.com/apple/swift-certificates
+    GIT_TAG main)
+  list(APPEND _SPM_VENDOR_DEPENDENCIES Certificates)
+endif()
+
+find_package(SwiftCollections CONFIG)
+if(NOT SwiftCollections_FOUND)
+  message(STATUS "Vending swift-collections")
+  FetchContent_Declare(Collections
+    GIT_REPOSITORY https://github.com/apple/swift-collections
+    GIT_TAG release/1.0)
+  list(APPEND _SPM_VENDOR_DEPENDENCIES Collections)
+endif()
+
+find_package(SwiftCrypto CONFIG)
+if(NOT SwiftCrypto_FOUND)
+  message(STATUS "Vending swift-crypto")
+  FetchContent_Declare(Crypto
+    GIT_REPOSITORY https://github.com/apple/swift-crypto
+    GIT_TAG 3.0.0)
+  list(APPEND _SPM_VENDOR_DEPENDENCIES Crypto)
+endif()
+
+find_package(SwiftDriver CONFIG)
+if(NOT SwiftDriver_FOUND)
+  message(STATUS "Vending swift-driver")
+  FetchContent_Declare(Driver
+    GIT_REPOSITORY https://github.com/apple/swift-driver
+    GIT_TAG main)
+  list(APPEND _SPM_VENDOR_DEPENDENCIES Driver)
+endif()
+
+find_package(SwiftSystem CONFIG)
+if(NOT SwiftSystem_FOUND)
+  message(STATUS "Vending swift-system")
+  FetchContent_Declare(System
+    GIT_REPOSITORY https://github.com/apple/swift-system
+    GIT_TAG 1.1.1)
+  list(APPEND _SPM_VENDOR_DEPENDENCIES System)
+endif()
+
+if(_SPM_VENDOR_DEPENDENCIES)
+  FetchContent_MakeAvailable(${_SPM_VENDOR_DEPENDENCIES})
+
+  if(NOT TARGET SwiftCollections::DequeModule)
+    add_library(SwiftCollections::DequeModule ALIAS DequeModule)
+  endif()
+  if(NOT TARGET SwiftCollections::OrderedCollections)
+    add_library(SwiftCollections::OrderedCollections ALIAS OrderedCollections)
+  endif()
+
+  if(NOT TARGET SwiftSystem::SystemPackage)
+    add_library(SwiftSystem::SystemPackage ALIAS SystemPackage)
+  endif()
 endif()
 
-find_package(dispatch QUIET)
-find_package(Foundation QUIET)
 find_package(SQLite3 REQUIRED)
 
 # Enable `package` modifier for the whole package.
 add_compile_options("$<$<COMPILE_LANGUAGE:Swift>:-package-name;SwiftPM>")
 
+set(BUILD_TESTING ${_SPM_SAVED_BUILD_TESTING})
+set(BUILD_EXAMPLES ${_SPM_SAVED_BUILD_EXAMPLES})
+
 add_subdirectory(Sources)
 add_subdirectory(cmake/modules)