diff --git a/example/boot-raid1.nix b/example/boot-raid1.nix
index dfd2e6c..e0f26ae 100644
--- a/example/boot-raid1.nix
+++ b/example/boot-raid1.nix
@@ -13,7 +13,7 @@
             start = "0";
             end = "1M";
             part-type = "primary";
-            flags = ["bios_grub"];
+            flags = [ "bios_grub" ];
           }
           {
             type = "partition";
@@ -53,7 +53,7 @@
             start = "0";
             end = "1M";
             part-type = "primary";
-            flags = ["bios_grub"];
+            flags = [ "bios_grub" ];
           }
           {
             type = "partition";
diff --git a/example/btrfs-subvolumes.nix b/example/btrfs-subvolumes.nix
index 25994df..a6d8088 100644
--- a/example/btrfs-subvolumes.nix
+++ b/example/btrfs-subvolumes.nix
@@ -35,12 +35,12 @@
                 };
                 # Mountpoints inferred from subvolume name
                 "/home" = {
-                  mountOptions = ["compress=zstd"];
+                  mountOptions = [ "compress=zstd" ];
                 };
                 "/nix" = {
-                  mountOptions = ["compress=zstd" "noatime"];
+                  mountOptions = [ "compress=zstd" "noatime" ];
                 };
-                "/test" = {};
+                "/test" = { };
               };
             };
           }
diff --git a/example/config.nix b/example/config.nix
index cb013cd..6117506 100644
--- a/example/config.nix
+++ b/example/config.nix
@@ -51,7 +51,7 @@
             part-type = "primary";
             start = "1024MiB";
             end = "100%";
-            flags = ["bios_grub"];
+            flags = [ "bios_grub" ];
             content = {
               type = "luks";
               name = "crypted";
diff --git a/example/gpt-bios-compat.nix b/example/gpt-bios-compat.nix
index 7275e26..6d2ae68 100644
--- a/example/gpt-bios-compat.nix
+++ b/example/gpt-bios-compat.nix
@@ -14,7 +14,7 @@
             start = "0";
             end = "1M";
             part-type = "primary";
-            flags = ["bios_grub"];
+            flags = [ "bios_grub" ];
           }
           {
             name = "root";
diff --git a/example/hybrid.nix b/example/hybrid.nix
index ff11661..341cec1 100644
--- a/example/hybrid.nix
+++ b/example/hybrid.nix
@@ -13,7 +13,7 @@
             type = "partition";
             start = "0";
             end = "1M";
-            flags = ["bios_grub"];
+            flags = [ "bios_grub" ];
           }
           {
             type = "partition";
diff --git a/example/mdadm.nix b/example/mdadm.nix
index 132ead5..f5a1d2e 100644
--- a/example/mdadm.nix
+++ b/example/mdadm.nix
@@ -13,7 +13,7 @@
             start = "0";
             end = "1M";
             part-type = "primary";
-            flags = ["bios_grub"];
+            flags = [ "bios_grub" ];
           }
           {
             type = "partition";
@@ -41,7 +41,7 @@
             start = "0";
             end = "1M";
             part-type = "primary";
-            flags = ["bios_grub"];
+            flags = [ "bios_grub" ];
           }
           {
             type = "partition";
diff --git a/example/stand-alone/configuration.nix b/example/stand-alone/configuration.nix
index c53bdf9..9a1f298 100644
--- a/example/stand-alone/configuration.nix
+++ b/example/stand-alone/configuration.nix
@@ -1,8 +1,8 @@
-{
-  pkgs,
-  lib,
-  ...
-}: let
+{ pkgs
+, lib
+, ...
+}:
+let
   # We just import from the repository for testing here:
   disko = import ../../. {
     inherit lib;
@@ -41,7 +41,8 @@
       };
     };
   };
-in {
+in
+{
   imports = [
     (disko.config cfg)
   ];
diff --git a/example/with-lib.nix b/example/with-lib.nix
index ce0b93d..78bb50d 100644
--- a/example/with-lib.nix
+++ b/example/with-lib.nix
@@ -13,7 +13,7 @@
           start = "0";
           end = "1M";
           part-type = "primary";
-          flags = ["bios_grub"];
+          flags = [ "bios_grub" ];
         }
         {
           name = "root";
diff --git a/tests/bcachefs.nix b/tests/bcachefs.nix
index d78d870..a54f966 100644
--- a/tests/bcachefs.nix
+++ b/tests/bcachefs.nix
@@ -2,7 +2,7 @@
 , makeDiskoTest ? (pkgs.callPackage ./lib.nix { }).makeDiskoTest
 }:
 let
-  linux-bcachefs = pkgs.callPackage ../linux-testing-bcachefs.nix {};
+  linux-bcachefs = pkgs.callPackage ../linux-testing-bcachefs.nix { };
 in
 makeDiskoTest {
   disko-config = ../example/bcachefs.nix;
@@ -14,11 +14,13 @@ makeDiskoTest {
   extraConfig = {
     boot.supportedFilesystems = [ "bcachefs" ];
     # disable zfs so we can support latest kernel
-    nixpkgs.overlays = [(final: super: {
-      zfs = super.zfs.overrideAttrs(_: {
-        meta.platforms = [];
-      });
-    })];
+    nixpkgs.overlays = [
+      (final: super: {
+        zfs = super.zfs.overrideAttrs (_: {
+          meta.platforms = [ ];
+        });
+      })
+    ];
     boot.kernelPackages = pkgs.lib.mkForce (pkgs.recurseIntoAttrs (pkgs.linuxPackagesFor linux-bcachefs));
   };
 }
diff --git a/tests/default.nix b/tests/default.nix
index 3706206..1efc16c 100644
--- a/tests/default.nix
+++ b/tests/default.nix
@@ -6,12 +6,14 @@ let
   lib = pkgs.lib;
   makeDiskoTest = (pkgs.callPackage ./lib.nix { inherit makeTest eval-config; }).makeDiskoTest;
 
-  evalTest = name: configFile: let
-    disko-config = import configFile;
-  in {
-    "${name}-tsp-create" = pkgs.writeScript "create" ((pkgs.callPackage ../. { }).create disko-config);
-    "${name}-tsp-mount" = pkgs.writeScript "mount" ((pkgs.callPackage ../. { }).mount disko-config);
-  };
+  evalTest = name: configFile:
+    let
+      disko-config = import configFile;
+    in
+    {
+      "${name}-tsp-create" = pkgs.writeScript "create" ((pkgs.callPackage ../. { }).create disko-config);
+      "${name}-tsp-mount" = pkgs.writeScript "mount" ((pkgs.callPackage ../. { }).mount disko-config);
+    };
 
   allTestFilenames =
     builtins.map (lib.removeSuffix ".nix") (
@@ -21,8 +23,8 @@ let
     );
 
   allTests = lib.genAttrs allTestFilenames (test: import (./. + "/${test}.nix") { inherit makeDiskoTest pkgs; }) //
-             evalTest "lvm-luks-example" ../example/config.nix // {
-               standalone = (pkgs.nixos [ ../example/stand-alone/configuration.nix ]).config.system.build.toplevel;
-             };
+    evalTest "lvm-luks-example" ../example/config.nix // {
+    standalone = (pkgs.nixos [ ../example/stand-alone/configuration.nix ]).config.system.build.toplevel;
+  };
 in
 allTests
diff --git a/tests/lib.nix b/tests/lib.nix
index 1ab8934..43b6607 100644
--- a/tests/lib.nix
+++ b/tests/lib.nix
@@ -100,7 +100,7 @@
         documentation.enable = false;
 
         nix.settings = {
-          substituters = lib.mkForce [];
+          substituters = lib.mkForce [ ];
           hashed-mirrors = null;
           connect-timeout = 1;
         };
diff --git a/types/default.nix b/types/default.nix
index 9614505..82f3324 100644
--- a/types/default.nix
+++ b/types/default.nix
@@ -325,7 +325,7 @@ rec {
   };
 
   subTypes = lib.mapAttrs (_: diskoLib.mkSubType) {
-    nodev =  ./nodev.nix;
+    nodev = ./nodev.nix;
     btrfs = ./btrfs.nix;
     btrfs_subvol = ./btrfs_subvol.nix;
     filesystem = ./filesystem.nix;
@@ -341,6 +341,6 @@ rec {
     mdadm = ./mdadm.nix;
     mdraid = ./mdraid.nix;
     luks = ./luks.nix;
-    disk =  ./disk.nix;
+    disk = ./disk.nix;
   };
 }