diff --git a/users/glittershark/xanthous/shell.nix b/users/glittershark/xanthous/shell.nix
index 481496642..c30349632 100644
--- a/users/glittershark/xanthous/shell.nix
+++ b/users/glittershark/xanthous/shell.nix
@@ -30,4 +30,5 @@ in
 (addBuildTools drv (with haskellPackages; [
   cabal-install
   ghc-prof-flamegraph
+  hp2pretty
 ])).env