1 files changed, 3 insertions, 0 deletions
diff --git a/lib/trivial.nix b/lib/trivial.nix
index 25ce35570fd..3e606f0df48 100644
--- a/lib/trivial.nix
+++ b/lib/trivial.nix
@@ -113,4 +113,7 @@ rec {
   */
   warn = msg: builtins.trace "WARNING: ${msg}";
   info = msg: builtins.trace "INFO: ${msg}";
+
+  fetchMD5warn = name: context : data : warn
+    "Deprecated use of MD5 hash in ${name} to fetch ${context}" data;
 }