Merge remote-tracking branch 'origin/master' into flakes

src/libexpr/eval.hh

@@ -6,6 +6,7 @@
 #include "symbol-table.hh"
 #include "hash.hh"
 #include "config.hh"
+#include "function-trace.hh"
 
 #include <map>
 #include <unordered_map>
@@ -373,6 +374,9 @@ struct EvalSettings : Config
     Setting<Strings> allowedUris{this, {}, "allowed-uris",
         "Prefixes of URIs that builtin functions such as fetchurl and fetchGit are allowed to fetch."};
 
+    Setting<bool> traceFunctionCalls{this, false, "trace-function-calls",
+        "Emit log messages for each function entry and exit at the 'vomit' log level (-vvvv)"};
+
     Setting<std::string> flakeRegistry{this, "https://raw.githubusercontent.com/NixOS/flake-registry/master/flake-registry.json", "flake-registry",
         "Path or URI of the global flake registry."};
 };