diff --git a/shell.nix b/shell.nix
index b62745815..180e8957d 100644
--- a/shell.nix
+++ b/shell.nix
@@ -12,7 +12,7 @@ pkgs.mkShell {
   # https://github.com/rust-lang/rust/issues/55979
   LD_LIBRARY_PATH="${stdenv.cc.cc.lib}/lib64:$LD_LIBRARY_PATH";
 
-  # HELIX_RUNTIME=./runtime;
-  HELIX_RUNTIME="/home/speed/src/helix/runtime";
+  shellHook = ''
+    export HELIX_RUNTIME=$PWD/runtime
+  '';
 }
-