diff --git a/nixos/configuration.nix b/nixos/configuration.nix
index 9db78d42..cb9c2caa 100644
--- a/nixos/configuration.nix
+++ b/nixos/configuration.nix
@@ -175,6 +175,7 @@ in
     cabal2nix
     ghc
     stack
+    haskellPackages.hpack
     haskellPackages.hasktags
     haskellPackages.hoogle
     (all-hies.selection { selector = p: { inherit (p) ghc864; }; })
@@ -188,6 +189,7 @@ in
     nodejs
 
     # Rust
+    rustc
     cargo
 
     # Clojure