Run statix

flake.nix

@@ -7,7 +7,7 @@
   inputs.flake-compat = { url = "github:edolstra/flake-compat"; flake = false; };
   inputs.libgit2 = { url = "github:libgit2/libgit2"; flake = false; };
 
-  outputs = { self, nixpkgs, nixpkgs-regression, lowdown-src, libgit2 }:
+  outputs = { self, nixpkgs, nixpkgs-regression, lowdown-src, libgit2, ... }:
 
     let
       inherit (nixpkgs) lib;
@@ -183,7 +183,7 @@
           "--enable-internal-api-docs"
         ];
 
-        changelog-d = pkgs.buildPackages.changelog-d;
+        inherit (pkgs.buildPackages) changelog-d;
 
         nativeBuildDeps =
           [
@@ -349,7 +349,7 @@
           nixStable = prev.nix;
 
           # Forward from the previous stage as we don’t want it to pick the lowdown override
-          nixUnstable = prev.nixUnstable;
+          inherit (prev) nixUnstable;
 
           nix =
             let

package.nix

@@ -141,10 +141,10 @@ stdenv.mkDerivation (finalAttrs: {
       apis = ["s3" "transfer"];
       customMemoryManagement = false;
     }))
-  ++ lib.optionals finalAttrs.doCheck ([
+  ++ lib.optionals finalAttrs.doCheck [
     gtest
     rapidcheck
-  ]);
+  ];
 
   propagatedBuildInputs = [
     boehmgc