diff --git a/pkgs/by-name/vk/vkd3d-proton/package.nix b/pkgs/by-name/vk/vkd3d-proton/package.nix
index a8d1aa7f1071..f7897b2af283 100644
--- a/pkgs/by-name/vk/vkd3d-proton/package.nix
+++ b/pkgs/by-name/vk/vkd3d-proton/package.nix
@@ -14,7 +14,10 @@ in
 stdenv.mkDerivation (finalAttrs: {
   inherit (sources.vkd3d-proton) pname version src;
 
-  outputs = [ "out" "dev" ];
+  outputs = [
+    "out"
+    "dev"
+  ];
 
   nativeBuildInputs = [
     glslang
diff --git a/pkgs/by-name/vk/vkd3d-proton/sources.nix b/pkgs/by-name/vk/vkd3d-proton/sources.nix
index 91a56dcb1335..f595273e2e33 100644
--- a/pkgs/by-name/vk/vkd3d-proton/sources.nix
+++ b/pkgs/by-name/vk/vkd3d-proton/sources.nix
@@ -1,40 +1,39 @@
-{
-  fetchFromGitHub,
-}:
+{ fetchFromGitHub }:
 
 {
-  vkd3d-proton = let
-    self = {
-      pname = "vkd3d-proton";
-      version = "2.8-unstable-2023-04-21";
+  vkd3d-proton =
+    let
+      self = {
+        pname = "vkd3d-proton";
+        version = "2.8-unstable-2023-04-21";
 
-      src = fetchFromGitHub {
-        owner = "HansKristian-Work";
-        repo = "vkd3d-proton";
-        rev = "83308675078e9ea263fa8c37af95afdd15b3ab71";
-        fetchSubmodules = true;
-        #
-        # Some files are filled by using Git commands; it requires deepClone.
-        # More info at `checkout_ref` function in nix-prefetch-git.
-        # However, `.git` is a bit nondeterministic (and Git itself makes no
-        # guarrantees whatsoever).
-        # Then, in order to enhance reproducibility, what we will do here is:
-        #
-        # - Execute the desired Git commands;
-        # - Save the obtained info into files;
-        # - Remove `.git` afterwards.
-        #
-        deepClone = true;
-        postFetch = ''
-          cd $out
-          mkdir -p .nixpkgs-auxfiles/
-          git describe --always --exclude='*' --abbrev=15 --dirty=0 > .nixpkgs-auxfiles/vkd3d_build
-          git describe --always --tags --dirty=+ > .nixpkgs-auxfiles/vkd3d_version
-          find $out -name .git -print0 | xargs -0 rm -fr
-        '';
-        hash = "sha256-KAa7iidME3iVGLvGmCysU3Vnl14Et8Es/5n6m6E+jHU=";
+        src = fetchFromGitHub {
+          owner = "HansKristian-Work";
+          repo = "vkd3d-proton";
+          rev = "83308675078e9ea263fa8c37af95afdd15b3ab71";
+          fetchSubmodules = true;
+          #
+          # Some files are filled by using Git commands; it requires deepClone.
+          # More info at `checkout_ref` function in nix-prefetch-git.
+          # However, `.git` is a bit nondeterministic (and Git itself makes no
+          # guarrantees whatsoever).
+          # Then, in order to enhance reproducibility, what we will do here is:
+          #
+          # - Execute the desired Git commands;
+          # - Save the obtained info into files;
+          # - Remove `.git` afterwards.
+          #
+          deepClone = true;
+          postFetch = ''
+            cd $out
+            mkdir -p .nixpkgs-auxfiles/
+            git describe --always --exclude='*' --abbrev=15 --dirty=0 > .nixpkgs-auxfiles/vkd3d_build
+            git describe --always --tags --dirty=+ > .nixpkgs-auxfiles/vkd3d_version
+            find $out -name .git -print0 | xargs -0 rm -fr
+          '';
+          hash = "sha256-KAa7iidME3iVGLvGmCysU3Vnl14Et8Es/5n6m6E+jHU=";
+        };
       };
-    };
-  in
+    in
     self;
 }