From 0a96b7e62713a53eb9f4bd4c67a78c52bd3b42c7 Mon Sep 17 00:00:00 2001
From: WxNzEMof <143541718+WxNzEMof@users.noreply.github.com>
Date: Mon, 4 Aug 2025 17:00:38 +0000
Subject: [PATCH] Recognize "identity" compression method

Some binary caches (incorrectly) use this header to indicate lack of
compression, inspired by the valid "identity" token in the
"Accept-Encoding" header.
---
 src/libutil/compression.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libutil/compression.cc b/src/libutil/compression.cc
index 0e38620d4..78219b7bc 100644
--- a/src/libutil/compression.cc
+++ b/src/libutil/compression.cc
@@ -215,7 +215,7 @@ std::string decompress(const std::string & method, std::string_view in)
 
 std::unique_ptr<FinishSink> makeDecompressionSink(const std::string & method, Sink & nextSink)
 {
-    if (method == "none" || method == "")
+    if (method == "none" || method == "" || method == "identity")
         return std::make_unique<NoneSink>(nextSink);
     else if (method == "br")
         return std::make_unique<BrotliDecompressionSink>(nextSink);