Fixed flake build script.

flake.nix

@@ -11,16 +11,12 @@
         pkgs = import nixpkgs { inherit system; };
         naersk-lib = pkgs.callPackage naersk { };
         PROJECT_ROOT = builtins.toString ./.;
-      in
-      {
         defaultPackage = naersk-lib.buildPackage ./.;
-
         defaultApp = utils.lib.mkApp {
           drv = self.defaultPackage."${system}";
         };
 
-        packages.development-environment =
-          with pkgs; buildEnv {
+        development-environment = with pkgs; buildEnv {
             name = "IntelliJ development environment";
             paths = [
               # something that work.. ish
@@ -31,8 +27,14 @@
               gcc
               cargo-tarpaulin
               ];
-          };
+        };
+      in
+      {
 
+        packages = {
+          development-environment = development-environment;
+          default = defaultPackage;
+        };
 
         devShell = with pkgs; mkShell {
           buildInputs = [cargo