From 4857feb9101ca4479f922040be17f27ee1486455 Mon Sep 17 00:00:00 2001
From: eldritch horrors <pennae@lix.systems>
Date: Thu, 27 Jun 2024 16:30:45 +0200
Subject: [PATCH] libutil: add Bytes type

not used anywhere yet, but we'll use this a lot soon for generators that
return file contents, wire protocol fragments, or indeed any byte stream

Change-Id: I01a46f9bf9d75aaf4a5d7662773b99f498862a28
---
 src/libutil/types.hh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/libutil/types.hh b/src/libutil/types.hh
index 4974634d8..13cb062fb 100644
--- a/src/libutil/types.hh
+++ b/src/libutil/types.hh
@@ -11,6 +11,7 @@
 #include <map>
 #include <variant>
 #include <vector>
+#include <span>
 
 namespace nix {
 
@@ -19,6 +20,10 @@ typedef std::set<std::string> StringSet;
 typedef std::map<std::string, std::string> StringMap;
 typedef std::map<std::string, std::string> StringPairs;
 
+// TODO this should be a std::byte span, but too much of the
+// current codebase predates std::byte and uses char instead
+using Bytes = std::span<const char>;
+
 /**
  * Paths are just strings.
  */