diff --git a/flake.nix b/flake.nix
index a697e6b..cfc19c3 100644
--- a/flake.nix
+++ b/flake.nix
@@ -87,7 +87,9 @@
           };
         };
 
-        devShells.default = pkgs.mkShell {
+        defaultPackage = self.packages.${system}.abacus;
+
+        devShell = pkgs.mkShell {
           inputsFrom = with self.packages.${system}; [
             abacus
           ];
@@ -97,7 +99,6 @@
 
         packages = futils.lib.flattenTree {
           inherit (pkgs) abacus;
-          default = pkgs.abacus;
         };
       });
 }