nixfmt-rfc-style

There is nothing in this commit except for the changes made by
nix-shell -p nixfmt-rfc-style --run "nixfmt ."

If this has mucked up your open branches then sorry about that. You
can probably nixfmt them to match before merging

pkgs/kernel/dtb.nix

@@ -1,24 +1,25 @@
 {
-  stdenv
-, dtc
-, lib
-, runCommand
-, writeText
+  stdenv,
+  dtc,
+  lib,
+  runCommand,
+  writeText,
 }:
-{ dts
-, includes
-, commandLine
-}:let
+{
+  dts,
+  includes,
+  commandLine,
+}:
+let
   cppDtSearchFlags = builtins.concatStringsSep " " (map (f: "-I${f}") includes);
   dtcSearchFlags = builtins.concatStringsSep " " (map (f: "-i${f}") includes);
   cmdline = lib.concatStringsSep " " commandLine;
   chosen = writeText "chosen.dtsi" "/{ chosen { bootargs = ${builtins.toJSON cmdline}; }; };";
-  combined = writeText "combined-dts-fragments"
-    (lib.concatStrings
-      (builtins.map
-        (f: "#include \"${f}\"\n")
-        (dts ++ [ chosen ])));
-in stdenv.mkDerivation {
+  combined = writeText "combined-dts-fragments" (
+    lib.concatStrings (builtins.map (f: "#include \"${f}\"\n") (dts ++ [ chosen ]))
+  );
+in
+stdenv.mkDerivation {
   name = "dtb";
   phases = [ "buildPhase" ];
   nativeBuildInputs = [ dtc ];