parse protocol spec

1 files changed, 1 insertions, 1 deletions

diff --git a/flake.nix b/flake.nix
index 877279d..4c8d074 100644
--- a/flake.nix
+++ b/flake.nix
@@ -23,7 +23,7 @@
               inherit system overlays;
             };
             haskell = pkgs.haskellPackages.ghcWithPackages (p:
-              with p; [ microlens microlens-mtl microlens-th haskell-language-server ]);
+              with p; [ microlens microlens-mtl microlens-th xml haskell-language-server ]);
           in
           pkgs.mkShell {
             inherit name;