Ports Overlay partial implementation (#6981)

* Ports Overlay feature spec

* Ports Overlay implementation

* [--overlay-ports] Refactor handling of additional paths

* Code cleanup

* [--overlay-ports] Add help

* [depend-info] Support --overlay-ports

* Add method to load all ports using PathsPortFileProvider

* Make PortFileProvider::load_all_control_files() const

* Remove unused code

* [vcpkg] Avoid double-load of source control file between Build::perform_and_exit and Build::perform_and_exit_ex

* [vcpkg] Clang format

* [vcpkg] Fixup build failure introduced in b069ceb2f231

* Report errors from Paragraphs::try_load_port()

1 files changed, 5 insertions, 3 deletions

diff --git a/toolsrc/src/tests.plan.cpp b/toolsrc/src/tests.plan.cpp
index 238aa7032..ab24266b4 100644
--- a/toolsrc/src/tests.plan.cpp
+++ b/toolsrc/src/tests.plan.cpp
@@ -47,7 +47,8 @@ namespace UnitTest1
 
         Assert::AreEqual(plan.spec.triplet().to_string().c_str(), triplet.to_string().c_str());
 
-        Assert::AreEqual(pkg_name.c_str(), plan.source_control_file.get()->core_paragraph->name.c_str());
+        auto* scfl = plan.source_control_file_location.get();
+        Assert::AreEqual(pkg_name.c_str(), scfl->source_control_file->core_paragraph->name.c_str());
         Assert::AreEqual(size_t(vec.size()), feature_list.size());
 
         for (auto&& feature_name : vec)
@@ -79,7 +80,7 @@ namespace UnitTest1
     /// </summary>
     struct PackageSpecMap
     {
-        std::unordered_map<std::string, SourceControlFile> map;
+        std::unordered_map<std::string, SourceControlFileLocation> map;
         Triplet triplet;
         PackageSpecMap(const Triplet& t = Triplet::X86_WINDOWS) noexcept { triplet = t; }
 
@@ -94,7 +95,8 @@ namespace UnitTest1
         {
             auto spec = PackageSpec::from_name_and_triplet(scf.core_paragraph->name, triplet);
             Assert::IsTrue(spec.has_value());
-            map.emplace(scf.core_paragraph->name, std::move(scf));
+            map.emplace(scf.core_paragraph->name,
+                        SourceControlFileLocation{std::unique_ptr<SourceControlFile>(std::move(&scf)), ""});
             return PackageSpec{*spec.get()};
         }
     };