flake: modularize w/ flake-parts

flake.nix

@@ -11,11 +11,9 @@
   outputs = inputs:
     inputs.flake-parts.lib.mkFlake {inherit inputs;} {
       systems = ["x86_64-linux"];
-      imports = [./hosts];
+      imports = [
-      perSystem = {pkgs, ...}: {
+        ./hosts
-        devShells.default = pkgs.mkShell {
+        ./parts
-          buildInputs = [pkgs.alejandra];
+      ];
-        };
-      };
     };
 }

parts/default.nix

@@ -0,0 +1,3 @@
+{
+  imports = [./devShell.nix];
+}

parts/devShell.nix

@@ -0,0 +1,7 @@
+{
+  perSystem = {pkgs, ...}: {
+    devShells.default = pkgs.mkShellNoCC {
+      packages = [pkgs.alejandra];
+    };
+  };
+}