diff --git a/format.sh b/format.sh
new file mode 100755
index 0000000..1ebd942
--- /dev/null
+++ b/format.sh
@@ -0,0 +1,4 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -I "nixpkgs=https://github.com/nixos/nixpkgs/archive/nixos-24.05.tar.gz" -p nixfmt-rfc-style
+
+nixfmt ${1:-"--verify"} ./**/*.nix
diff --git a/foundation/default.nix b/foundation/default.nix
index 3b7fd95..e80393f 100644
--- a/foundation/default.nix
+++ b/foundation/default.nix
@@ -1,14 +1,13 @@
-{system ? builtins.currentSystem}: let
+{
+  system ? builtins.currentSystem,
+}:
+let
   lib = import ./../lib;
 
   modules = import ./src;
 
   result = lib.modules.run {
-    modules =
-      (builtins.attrValues modules)
-      ++ [
-        {config.aux.system = system;}
-      ];
+    modules = (builtins.attrValues modules) ++ [ { config.aux.system = system; } ];
   };
 in
-  result.config.exports.resolved.packages
+result.config.exports.resolved.packages
diff --git a/foundation/flake.nix b/foundation/flake.nix
index d2bcde4..abe9dc7 100644
--- a/foundation/flake.nix
+++ b/foundation/flake.nix
@@ -7,34 +7,30 @@
     };
   };
 
-  outputs = inputs: let
-    inherit (inputs.lib) lib;
+  outputs =
+    inputs:
+    let
+      inherit (inputs.lib) lib;
 
-    modules = import ./src;
+      modules = import ./src;
 
-    forEachSystem = lib.attrs.generate [
-      "i686-linux"
-    ];
-  in {
-    extras = let
-      result = lib.modules.run {
-        modules =
-          builtins.attrValues modules;
-      };
+      forEachSystem = lib.attrs.generate [ "i686-linux" ];
     in
-      result.config.exports.resolved.extras;
+    {
+      extras =
+        let
+          result = lib.modules.run { modules = builtins.attrValues modules; };
+        in
+        result.config.exports.resolved.extras;
 
-    packages = forEachSystem (
-      system: let
-        result = lib.modules.run {
-          modules =
-            (builtins.attrValues modules)
-            ++ [
-              {config.aux.system = system;}
-            ];
-        };
-      in
+      packages = forEachSystem (
+        system:
+        let
+          result = lib.modules.run {
+            modules = (builtins.attrValues modules) ++ [ { config.aux.system = system; } ];
+          };
+        in
         result.config.exports.resolved.packages
-    );
-  };
+      );
+    };
 }
diff --git a/lib/default.test.nix b/lib/default.test.nix
index 8f243b3..0decee6 100644
--- a/lib/default.test.nix
+++ b/lib/default.test.nix
@@ -25,54 +25,51 @@ let
     ./src/versions/default.test.nix
   ];
 
-  resolve = file: let
-    imported = import file;
-    value =
-      if builtins.isFunction imported
-      then imported {inherit lib;}
-      else imported;
-    relative = lib.strings.removePrefix (builtins.toString root) (builtins.toString file);
-  in {
-    inherit file value;
-    relative =
-      if lib.strings.hasPrefix "/" relative
-      then "." + relative
-      else relative;
-    namespace = getNamespace file;
-  };
+  resolve =
+    file:
+    let
+      imported = import file;
+      value = if builtins.isFunction imported then imported { inherit lib; } else imported;
+      relative = lib.strings.removePrefix (builtins.toString root) (builtins.toString file);
+    in
+    {
+      inherit file value;
+      relative = if lib.strings.hasPrefix "/" relative then "." + relative else relative;
+      namespace = getNamespace file;
+    };
 
   resolved = builtins.map resolve files;
 
-  getNamespace = path: let
-    relative = lib.strings.removePrefix (builtins.toString root) (builtins.toString path);
-    parts = lib.strings.split "/" relative;
-  in
-    if builtins.length parts > 2
-    then builtins.elemAt parts 2
-    else relative;
-
-  results = let
-    getTests = file: prefix: suite: let
-      nested = lib.attrs.mapToList (name: value: getTests file (prefix ++ [name]) value) suite;
-      relative = lib.strings.removePrefix (builtins.toString root) (builtins.toString file);
+  getNamespace =
+    path:
+    let
+      relative = lib.strings.removePrefix (builtins.toString root) (builtins.toString path);
+      parts = lib.strings.split "/" relative;
     in
-      if builtins.isAttrs suite
-      then builtins.concatLists nested
-      else [
-        {
-          inherit prefix file;
-          name = builtins.concatStringsSep " > " prefix;
-          value = suite;
-          relative =
-            if lib.strings.hasPrefix "/" relative
-            then "." + relative
-            else relative;
-        }
-      ];
+    if builtins.length parts > 2 then builtins.elemAt parts 2 else relative;
 
-    base =
-      builtins.map (entry: getTests entry.file [entry.namespace] entry.value) resolved;
-  in
+  results =
+    let
+      getTests =
+        file: prefix: suite:
+        let
+          nested = lib.attrs.mapToList (name: value: getTests file (prefix ++ [ name ]) value) suite;
+          relative = lib.strings.removePrefix (builtins.toString root) (builtins.toString file);
+        in
+        if builtins.isAttrs suite then
+          builtins.concatLists nested
+        else
+          [
+            {
+              inherit prefix file;
+              name = builtins.concatStringsSep " > " prefix;
+              value = suite;
+              relative = if lib.strings.hasPrefix "/" relative then "." + relative else relative;
+            }
+          ];
+
+      base = builtins.map (entry: getTests entry.file [ entry.namespace ] entry.value) resolved;
+    in
     builtins.concatLists base;
 
   successes = builtins.filter (test: test.value) results;
@@ -80,29 +77,23 @@ let
 
   total = "${builtins.toString (builtins.length successes)} / ${builtins.toString (builtins.length results)}";
 in
-  if failures == []
-  then let
-    message =
-      lib.strings.concatMapSep "\n"
-      (test: "✅ ${test.name}")
-      successes;
-  in ''
+if failures == [ ] then
+  let
+    message = lib.strings.concatMapSep "\n" (test: "✅ ${test.name}") successes;
+  in
+  ''
     SUCCESS (${total})
 
     ${message}
   ''
-  else let
-    successMessage =
-      lib.strings.concatMapSep "\n"
-      (test: "✅ ${test.name}")
-      successes;
-    failureMessage =
-      lib.strings.concatMapSep "\n\n"
-      (test:
-        "❎ ${test.name}\n"
-        + "  -> ${test.relative}")
-      failures;
-  in ''
+else
+  let
+    successMessage = lib.strings.concatMapSep "\n" (test: "✅ ${test.name}") successes;
+    failureMessage = lib.strings.concatMapSep "\n\n" (
+      test: "❎ ${test.name}\n" + "  -> ${test.relative}"
+    ) failures;
+  in
+  ''
     FAILURE (${total})
 
     ${failureMessage}
diff --git a/lib/flake.nix b/lib/flake.nix
index bf835a3..749d2de 100644
--- a/lib/flake.nix
+++ b/lib/flake.nix
@@ -1,7 +1,5 @@
 {
   description = "A NixPkgs library replacement containing helper functions and a module system.";
 
-  outputs = _: {
-    lib = import ./src;
-  };
+  outputs = _: { lib = import ./src; };
 }
diff --git a/tidepool/default.nix b/tidepool/default.nix
index 6b039d1..8c6436e 100644
--- a/tidepool/default.nix
+++ b/tidepool/default.nix
@@ -1,27 +1,21 @@
 {
   lib ? import ./../lib,
-  foundation ? import ./../foundation {system = "i686-linux";},
-}: let
+  foundation ? import ./../foundation { system = "i686-linux"; },
+}:
+let
   modules = import ./src/modules.nix;
 
   result = lib.modules.run {
-    modules =
-      (builtins.attrValues modules)
-      ++ [
-        ./src/export.nix
-        {
-          __file__ = ./default.nix;
+    modules = (builtins.attrValues modules) ++ [
+      ./src/export.nix
+      {
+        __file__ = ./default.nix;
 
-          options.foundation = lib.options.create {
-            type = lib.types.attrs.of lib.types.derivation;
-          };
+        options.foundation = lib.options.create { type = lib.types.attrs.of lib.types.derivation; };
 
-          config.foundation = foundation;
-        }
-      ];
+        config.foundation = foundation;
+      }
+    ];
   };
 in
-  result.config.exported
-  // {
-    inherit (result) config;
-  }
+result.config.exported // { inherit (result) config; }
diff --git a/tidepool/flake.nix b/tidepool/flake.nix
index e98c783..213cd18 100644
--- a/tidepool/flake.nix
+++ b/tidepool/flake.nix
@@ -9,11 +9,13 @@
     };
   };
 
-  outputs = inputs: let
-    exports = import ./default.nix {
-      lib = inputs.lib.lib;
-      foundation = inputs.foundation.packages.i686-linux;
-    };
-  in
+  outputs =
+    inputs:
+    let
+      exports = import ./default.nix {
+        lib = inputs.lib.lib;
+        foundation = inputs.foundation.packages.i686-linux;
+      };
+    in
     exports;
 }