diff --git a/flake.nix b/flake.nix
index 403c030..ec6c24c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -6,9 +6,13 @@
   outputs = { self, nixpkgs, flake-utils }:
     flake-utils.lib.eachDefaultSystem
       (system:
-        let pkgs = nixpkgs.legacyPackages.${system}; in
+        let
+          pkgs = nixpkgs.legacyPackages.${system};
+          package = pkgs.callPackage ./package.nix {};
+        in
         {
-          packages.default = pkgs.callPackage ./package.nix {};
+          packages.default = package.app;
+          devShells.default = package.shell;
 
           checks = {
             # I used to put these into $out/lib, but justStaticExecutables
diff --git a/package.nix b/package.nix
index d474c23..1013558 100644
--- a/package.nix
+++ b/package.nix
@@ -36,4 +36,10 @@ let
     };
   };
 in
-hlib.justStaticExecutables hpkgs.stackage-server
+{
+  app = hlib.justStaticExecutables hpkgs.stackage-server;
+  shell = hpkgs.shellFor {
+    packages = p: [ p.stackage-server ];
+    buildInputs = [ pkgs.cabal-install pkgs.haskell-language-server pkgs.ghcid ];
+  };
+}