diff --git a/images/cachix/default.nix b/images/cachix/default.nix
index bc188ad..59fcdee 100644
--- a/images/cachix/default.nix
+++ b/images/cachix/default.nix
@@ -6,7 +6,7 @@
   nix = nix;
   extraContents = [ cachix ];
 }).overrideAttrs (prev: {
-  meta = (prev.meta or {}) // {
+  meta = (prev.meta or { }) // {
     description = "Nix and Cachix image";
   };
 })
diff --git a/images/devcontainer/default.nix b/images/devcontainer/default.nix
index 337f24c..8b1257f 100644
--- a/images/devcontainer/default.nix
+++ b/images/devcontainer/default.nix
@@ -25,7 +25,7 @@
 , mkUserEnvironment
 }:
 let
-  channel = builtins.getEnv("NIXPKGS_CHANNEL");
+  channel = builtins.getEnv ("NIXPKGS_CHANNEL");
 
   # generate a user profile for the image
   profile = mkUserEnvironment {
diff --git a/images/nix/default.nix b/images/nix/default.nix
index 168052b..2f469c4 100644
--- a/images/nix/default.nix
+++ b/images/nix/default.nix
@@ -10,7 +10,7 @@
 , nix
 , openssh
 , xz
-, extraContents ? []
+, extraContents ? [ ]
 }:
 let
   image = dockerTools.buildImageWithNixDb {
diff --git a/images/nix/fake_nixpkgs/default.nix b/images/nix/fake_nixpkgs/default.nix
index 55e2369..3001f60 100644
--- a/images/nix/fake_nixpkgs/default.nix
+++ b/images/nix/fake_nixpkgs/default.nix
@@ -1,10 +1,10 @@
 _:
 throw ''
-This container doesn't include nixpkgs.
+  This container doesn't include nixpkgs.
 
-The best way to work around that is to pin your dependencies. See
-  https://nix.dev/tutorials/towards-reproducibility-pinning-nixpkgs.html
+  The best way to work around that is to pin your dependencies. See
+    https://nix.dev/tutorials/towards-reproducibility-pinning-nixpkgs.html
 
-Or if you must, override the NIX_PATH environment variable with eg:
-  "NIX_PATH=nixpkgs=channel:nixos-unstable"
+  Or if you must, override the NIX_PATH environment variable with eg:
+    "NIX_PATH=nixpkgs=channel:nixos-unstable"
 ''
diff --git a/lib/buildCLIImage.nix b/lib/buildCLIImage.nix
index b5109a1..454e43d 100644
--- a/lib/buildCLIImage.nix
+++ b/lib/buildCLIImage.nix
@@ -5,7 +5,7 @@
 { drv # derivation to build the image for
   # Name of the binary to run by default
 , binName ? (builtins.parseDrvName drv.name).name
-, extraContents ? []
+, extraContents ? [ ]
 , meta ? drv.meta
 }:
 let
diff --git a/overlay.nix b/overlay.nix
index e864878..b480eb3 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -1,17 +1,18 @@
-_: pkgs: let
+_: pkgs:
+let
   importDir = import ./lib/importDir.nix {
     inherit (pkgs) lib;
   };
 in
 {
   # builder stuff can be in the top-level
-  buildCLIImage = pkgs.callPackage ./lib/buildCLIImage.nix {};
+  buildCLIImage = pkgs.callPackage ./lib/buildCLIImage.nix { };
 
   # docker images must be lower-cased
-  docker-nixpkgs = importDir (path: pkgs.callPackage path {}) ./images;
+  docker-nixpkgs = importDir (path: pkgs.callPackage path { }) ./images;
 
   # used to build nix-env compatible user environments
-  mkUserEnvironment = pkgs.callPackage ./lib/mkUserEnvironment.nix {};
+  mkUserEnvironment = pkgs.callPackage ./lib/mkUserEnvironment.nix { };
 
   # gitMinimal still ships with perl and python
   gitReallyMinimal = (
diff --git a/pkgs.nix b/pkgs.nix
index f6a8f72..62e5716 100644
--- a/pkgs.nix
+++ b/pkgs.nix
@@ -1,7 +1,7 @@
 import <nixpkgs> {
   # docker images run on Linux
   system = "x86_64-linux";
-  config = {};
+  config = { };
   overlays = [
     (import ./overlay.nix)
   ];
diff --git a/shell.nix b/shell.nix
index 407ae45..9f06818 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,6 +1,6 @@
 let
   nixpkgs = builtins.fetchTarball "channel:nixos-20.09";
-  pkgs = import nixpkgs { config = {}; overlays = []; };
+  pkgs = import nixpkgs { config = { }; overlays = [ ]; };
 in
 with pkgs;
 mkShell {