From 288c5b0abd217b1d247e1c8787ea19da0a511251 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Fri, 28 Feb 2025 16:16:53 +0100
Subject: [PATCH] Include DeterminateNix in the User-Agent header

The User-Agent now shows `curl/8.11.0 Nix/2.26.3
DeterminateNix/3.0.0`. This is useful for distinguishing Determinate
Nix from upstream Nix in binary cache logs.
---
 src/libstore/filetransfer.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/libstore/filetransfer.cc b/src/libstore/filetransfer.cc
index 932e1d756..28a437e56 100644
--- a/src/libstore/filetransfer.cc
+++ b/src/libstore/filetransfer.cc
@@ -324,7 +324,9 @@ struct curlFileTransfer : public FileTransfer
             curl_easy_setopt(req, CURLOPT_MAXREDIRS, 10);
             curl_easy_setopt(req, CURLOPT_NOSIGNAL, 1);
             curl_easy_setopt(req, CURLOPT_USERAGENT,
-                ("curl/" LIBCURL_VERSION " Nix/" + nixVersion +
+                ("curl/" LIBCURL_VERSION
+                    " Nix/" + nixVersion +
+                    " DeterminateNix/" + determinateNixVersion +
                     (fileTransferSettings.userAgentSuffix != "" ? " " + fileTransferSettings.userAgentSuffix.get() : "")).c_str());
             #if LIBCURL_VERSION_NUM >= 0x072b00
             curl_easy_setopt(req, CURLOPT_PIPEWAIT, 1);