treewide: format with nixpkgs-fmt

flake.nix

@@ -40,9 +40,12 @@
       };
 
       # Build attributes for a Rust application.
-      buildRustApp = {
-        src, target ? null, doCheck ? true
-      }: let
+      buildRustApp =
+        { src
+        , target ? null
+        , doCheck ? true
+        }:
+        let
           cleanedSrc = craneLib.cleanCargoSource src;
           commonArgs = {
             src = cleanedSrc;
@@ -51,7 +54,8 @@
           };
 
           cargoArtifacts = craneLib.buildDepsOnly commonArgs;
-      in {
+        in
+        {
           package = craneLib.buildPackage (commonArgs // {
             inherit cargoArtifacts;
           });
@@ -76,7 +80,8 @@
 
       lanzatool-unwrapped = lanzatoolCrane.package;
 
-      lanzatool = pkgs.runCommand "lanzatool" {
+      lanzatool = pkgs.runCommand "lanzatool"
+        {
           nativeBuildInputs = [ pkgs.makeWrapper ];
         } ''
         mkdir -p $out/bin
@@ -88,7 +93,8 @@
           --set RUST_BACKTRACE full \
           --set LANZABOOTE_STUB ${lanzaboote}/bin/lanzaboote.efi
       '';
-    in {
+    in
+    {
       overlays.default = final: prev: {
         inherit lanzatool;
       };
@@ -122,8 +128,9 @@
         ];
       };
 
-      checks.x86_64-linux = let
-        mkSecureBootTest = { name, machine ? {}, testScript }: nixpkgs-test.legacyPackages.x86_64-linux.nixosTest {
+      checks.x86_64-linux =
+        let
+          mkSecureBootTest = { name, machine ? { }, testScript }: nixpkgs-test.legacyPackages.x86_64-linux.nixosTest {
             inherit name testScript;
             nodes.machine = { lib, ... }: {
               imports = [