diff --git a/default.nix b/default.nix
index b19997de..4c423dcd 100644
--- a/default.nix
+++ b/default.nix
@@ -1,12 +1,15 @@
-{ pkgs ? import <nixpkgs> { }
-, withSandboxSupport ? false
-, withAutocomplete ? true
-, withNom ? false
+{
+  pkgs ? import <nixpkgs> { },
+  withSandboxSupport ? false,
+  withAutocomplete ? true,
+  withNom ? false,
 }:
 
 with pkgs;
 let
-  withNom' = withNom && (builtins.tryEval (builtins.elem buildPlatform.system pkgs.ghc.meta.platforms)).value or false;
+  withNom' =
+    withNom
+    && (builtins.tryEval (builtins.elem buildPlatform.system pkgs.ghc.meta.platforms)).value or false;
 in
 python3.pkgs.buildPythonApplication {
   name = "nixpkgs-review";
@@ -24,8 +27,7 @@ python3.pkgs.buildPythonApplication {
     python3.pkgs.pytest
     pkgs.nixVersions.stable or nix_2_4
     git
-  ] ++ lib.optional withSandboxSupport bubblewrap
-  ++ lib.optional withNom' nix-output-monitor;
+  ] ++ lib.optional withSandboxSupport bubblewrap ++ lib.optional withNom' nix-output-monitor;
 
   checkPhase = ''
     echo -e "\x1b[32m## run nixpkgs-review --help\x1b[0m"
@@ -34,9 +36,10 @@ python3.pkgs.buildPythonApplication {
   '';
   makeWrapperArgs =
     let
-      binPath = [ pkgs.nixVersions.stable or nix_2_4 git ]
-        ++ lib.optional withSandboxSupport bubblewrap
-        ++ lib.optional withNom' nix-output-monitor;
+      binPath = [
+        pkgs.nixVersions.stable or nix_2_4
+        git
+      ] ++ lib.optional withSandboxSupport bubblewrap ++ lib.optional withNom' nix-output-monitor;
     in
     [
       "--prefix PATH : ${lib.makeBinPath binPath}"
diff --git a/flake.nix b/flake.nix
index 35fceafe..b25fcf1f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -10,27 +10,42 @@
     treefmt-nix.inputs.nixpkgs.follows = "nixpkgs";
   };
 
-  outputs = inputs @ { flake-parts, ... }:
-    flake-parts.lib.mkFlake { inherit inputs; } ({ lib, ... }: {
-      imports = [ ./treefmt.nix ];
-      systems = [
-        "aarch64-linux"
-        "x86_64-linux"
-        "riscv64-linux"
+  outputs =
+    inputs@{ flake-parts, ... }:
+    flake-parts.lib.mkFlake { inherit inputs; } (
+      { lib, ... }:
+      {
+        imports = [ ./treefmt.nix ];
+        systems = [
+          "aarch64-linux"
+          "x86_64-linux"
+          "riscv64-linux"
 
-        "x86_64-darwin"
-        "aarch64-darwin"
-      ];
-      perSystem = { config, pkgs, self', ... }: {
-        packages = {
-          nixpkgs-review = pkgs.callPackage ./. { };
-          default = config.packages.nixpkgs-review;
-        } // lib.optionalAttrs (pkgs.stdenv.isLinux) {
-          nixpkgs-review-sandbox = pkgs.callPackage ./. { withSandboxSupport = true; };
-        };
-        devShells = {
-          default = (self'.packages.nixpkgs-review-sandbox or self'.packages.nixpkgs-review).override { withNom = true; };
-        };
-      };
-    });
+          "x86_64-darwin"
+          "aarch64-darwin"
+        ];
+        perSystem =
+          {
+            config,
+            pkgs,
+            self',
+            ...
+          }:
+          {
+            packages =
+              {
+                nixpkgs-review = pkgs.callPackage ./. { };
+                default = config.packages.nixpkgs-review;
+              }
+              // lib.optionalAttrs (pkgs.stdenv.isLinux) {
+                nixpkgs-review-sandbox = pkgs.callPackage ./. { withSandboxSupport = true; };
+              };
+            devShells = {
+              default = (self'.packages.nixpkgs-review-sandbox or self'.packages.nixpkgs-review).override {
+                withNom = true;
+              };
+            };
+          };
+      }
+    );
 }
diff --git a/nixpkgs_review/nix/evalAttrs.nix b/nixpkgs_review/nix/evalAttrs.nix
index 01e5ff3a..90eb64a5 100644
--- a/nixpkgs_review/nix/evalAttrs.nix
+++ b/nixpkgs_review/nix/evalAttrs.nix
@@ -11,7 +11,8 @@ let
   inherit (pkgs) lib;
 
   attrs = fromJSON (readFile attr-json);
-  getProperties = name:
+  getProperties =
+    name:
     let
       attrPath = lib.splitString "." name;
       pkg = lib.attrByPath attrPath null pkgs;
@@ -27,19 +28,18 @@ let
         })
       ]
     else
-      lib.flip map pkg.outputs or [ "out" ] (output:
+      lib.flip map pkg.outputs or [ "out" ] (
+        output:
         let
           # some packages are set to null if they aren't compatible with a platform or package set
           maybePath = tryEval "${lib.getOutput output pkg}";
           broken = !exists || !maybePath.success;
         in
-        lib.nameValuePair
-          (if output == "out" then name else "${name}.${output}")
-          {
-            inherit exists broken;
-            path = if !broken then maybePath.value else null;
-            drvPath = if !broken then pkg.drvPath else null;
-          }
+        lib.nameValuePair (if output == "out" then name else "${name}.${output}") {
+          inherit exists broken;
+          path = if !broken then maybePath.value else null;
+          drvPath = if !broken then pkg.drvPath else null;
+        }
       );
 in
 
diff --git a/nixpkgs_review/nix/review-shell.nix b/nixpkgs_review/nix/review-shell.nix
index d78007d6..7b0c318f 100644
--- a/nixpkgs_review/nix/review-shell.nix
+++ b/nixpkgs_review/nix/review-shell.nix
@@ -1,16 +1,16 @@
-{ local-system
-, nixpkgs-config-path
-, # Path to Nix file containing the Nixpkgs config
-  attrs-path
-, # Path to Nix file containing a list of attributes to build
-  nixpkgs-path
-, # Path to this review's nixpkgs
+{
+  local-system,
+  nixpkgs-config-path,
+  # Path to Nix file containing the Nixpkgs config
+  attrs-path,
+  # Path to Nix file containing a list of attributes to build
+  nixpkgs-path,
+  # Path to this review's nixpkgs
   local-pkgs ? import nixpkgs-path {
     system = local-system;
     config = import nixpkgs-config-path;
-  }
-, lib ? local-pkgs.lib
-,
+  },
+  lib ? local-pkgs.lib,
 }:
 
 let
diff --git a/shell.nix b/shell.nix
index d6c62595..d61716d4 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,4 +1,6 @@
-{ pkgs ? import <nixpkgs> { } }:
+{
+  pkgs ? import <nixpkgs> { },
+}:
 
 with pkgs;
 
diff --git a/tests/assets/nixpkgs/default.nix b/tests/assets/nixpkgs/default.nix
index 785557ce..17c2b7b3 100644
--- a/tests/assets/nixpkgs/default.nix
+++ b/tests/assets/nixpkgs/default.nix
@@ -1,16 +1,19 @@
-{ config ? { }, system ? null } @ args:
+{
+  config ? { },
+  # deadnix: skip
+  system ? null,
+}@args:
 let
-  pkgs =
-    import "@NIXPKGS@" (args // { inherit config;
-    });
-    in {
-    pkg1 = pkgs.stdenv.mkDerivation {
+  pkgs = import "@NIXPKGS@" (args // { inherit config; });
+in
+{
+  pkg1 = pkgs.stdenv.mkDerivation {
     name = "pkg1";
     dontUnpack = true;
     installPhase = ''
       install -D ${./pkg1.txt} $out/foo
     '';
-    };
-    # hack to not break evaluation with nixpkgs_review/nix/*.nix
-    inherit (pkgs) lib mkShell bashInteractive;
-    }
+  };
+  # hack to not break evaluation with nixpkgs_review/nix/*.nix
+  inherit (pkgs) lib mkShell bashInteractive;
+}