diff --git a/shell.nix b/shell.nix
index dd4484105..4c1608230 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,6 +1,8 @@
+{ useClang ? false }:
+
 with import <nixpkgs> {};
 
-stdenv.mkDerivation {
+(if useClang then clangStdenv else stdenv).mkDerivation {
   name = "nix";
 
   buildInputs =