Improve incremental build

src/nix/build.cc

@@ -3,6 +3,7 @@
 #include "common-args.hh"
 #include "shared.hh"
 #include "store-api.hh"
+#include "primops/flake.hh"
 
 using namespace nix;
 

src/nix/command.hh

@@ -1,7 +1,6 @@
 #pragma once
 
 #include "args.hh"
-#include "primops/flake.hh"
 #include "common-eval-args.hh"
 #include <optional>
 
@@ -48,7 +47,7 @@ struct GitRepoCommand : virtual Args
 
 struct FlakeCommand : virtual Args
 {
-    FlakeUri flakeUri;
+    std::string flakeUri;
 
     FlakeCommand()
     {

src/nix/flake.cc

@@ -3,6 +3,8 @@
 #include "shared.hh"
 #include "progress-bar.hh"
 #include "eval.hh"
+#include "primops/flake.hh"
+
 #include <nlohmann/json.hpp>
 #include <queue>
 

src/nix/installables.cc

@@ -7,6 +7,7 @@
 #include "get-drvs.hh"
 #include "store-api.hh"
 #include "shared.hh"
+#include "primops/flake.hh"
 
 #include <regex>