chore: Use nixfmt reformat all nix source code

pkgs/helix/package.nix

@@ -4,12 +4,14 @@
   callPackage,
   buildEnv,
   lib,
-}: let
+}:
+let
   inherit (stdenv.hostPlatform) system;
   inherit (inputs.helix.packages."${system}") helix;
-  runtime = callPackage ./runtime.nix {};
+  runtime = callPackage ./runtime.nix { };
   helix' = helix.overrideAttrs (
-    _final: prev: let
+    _final: prev:
+    let
       helix-runtime = buildEnv {
         name = "helix-runtime";
         paths = [
@@ -17,25 +19,22 @@
           prev.env.HELIX_DEFAULT_RUNTIME
         ];
       };
-    in {
+    in
+    {
       env.HELIX_DEFAULT_RUNTIME = toString helix-runtime;
-      cargoBuildFeatures =
-        (prev.cargoBuildFeatures or [])
-        ++ [
-          "git"
-          "steel"
-        ];
+      cargoBuildFeatures = (prev.cargoBuildFeatures or [ ]) ++ [
+        "git"
+        "steel"
+      ];
     }
   );
 in
-  helix'
-  // {
-    passthru =
-      (helix'.passthru or {})
-      // {
-        languages = lib.pipe "${helix.src}/languages.toml" [
-          builtins.readFile
-          fromTOML
-        ];
-      };
-  }
+helix'
+// {
+  passthru = (helix'.passthru or { }) // {
+    languages = lib.pipe "${helix.src}/languages.toml" [
+      builtins.readFile
+      fromTOML
+    ];
+  };
+}