config.nix: format using nixfmt

.config/nixpkgs/config.nix

@@ -3,33 +3,34 @@
 
   # https://nixos.org/manual/nixpkgs/stable/#sec-declarative-package-management
   # https://github.com/g-w1/nix-configs/blob/main/home.nix
-  packageOverrides = pkgs: with pkgs; {
-    myPackages = pkgs.buildEnv {
-      name = "my-packages";
-      paths = [
-        aerc
-        b3sum
-        cpplint
+  packageOverrides = pkgs:
+    with pkgs; {
+      myPackages = pkgs.buildEnv {
+        name = "my-packages";
+        paths = [
+          aerc
+          b3sum
+          cpplint
 
-        cachix
-        hydra-check
-        nixops
-        nix-update
-        nix-diff
-        niff
-        nox
-        nix-du
-        nixfmt
-        statix
+          cachix
+          hydra-check
+          nixops
+          nix-update
+          nix-diff
+          niff
+          nox
+          nix-du
+          nixfmt
+          statix
 
-        elvish
-        silver-searcher
-        starship
-        ttyper
+          elvish
+          silver-searcher
+          starship
+          ttyper
 
-        nerdfonts
-      ];
-      pathsToLink = [ "/share" "/bin" "/etc" ];
+          nerdfonts
+        ];
+        pathsToLink = [ "/share" "/bin" "/etc" ];
+      };
     };
-  };
 }