1 files changed, 11 insertions, 0 deletions
diff --git a/build2/types b/build2/types
index 7c803a1..54056ba 100644
--- a/build2/types
+++ b/build2/types
@@ -21,6 +21,8 @@
 
 #include <butl/path>
 #include <butl/sha256>
+#include <butl/process>
+#include <butl/fdstream>
 #include <butl/optional>
 #include <butl/timestamp>
 
@@ -99,6 +101,15 @@ namespace build2
   //
   using butl::sha256;
 
+  // <butl/process>
+  // <butl/fdstream>
+  //
+  using butl::process;
+  using butl::process_error;
+
+  using butl::ifdstream;
+  using butl::ofdstream;
+
   // <build2/name>
   //
 }