diff --git a/flake.nix b/flake.nix
index da2be9f..0350d77 100644
--- a/flake.nix
+++ b/flake.nix
@@ -113,6 +113,7 @@
     in {
       packages.x86_64-linux = {
         inherit thermostat thermostat_gui;
+        default = thermostat;
       };
 
       apps.x86_64-linux.thermostat_gui = {
@@ -124,14 +125,13 @@
         inherit thermostat;
       };
 
-      devShell.x86_64-linux = pkgs.mkShell {
+      devShells.x86_64-linux.default = pkgs.mkShellNoCC {
         name = "thermostat-dev-shell";
-        buildInputs = with pkgs; [
+        packages = with pkgs; [
           rust openocd dfu-util
           ] ++ (with python3Packages; [
             numpy matplotlib pyqtgraph setuptools pyqt6 qasync pglive qtextras
           ]);
       };
-      defaultPackage.x86_64-linux = thermostat;
     };
 }
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