Add cabal-install to shell dependencies

release.nix

@@ -16,6 +16,7 @@ let
       _pkgs.binutils-unwrapped
       haskellPackages.ghcid
       haskellPackages.hasktags
+      haskellPackages.cabal-install
       (haskellPackages.ghcWithHoogle (_: pkg.buildInputs ++ pkg.propagatedBuildInputs))
     ];
   };