diff --git a/pkgs/by-name/ca/cargo-unfmt/package.nix b/pkgs/by-name/ca/cargo-unfmt/package.nix
index e53cc07c330c..42a1ea9b57f8 100644
--- a/pkgs/by-name/ca/cargo-unfmt/package.nix
+++ b/pkgs/by-name/ca/cargo-unfmt/package.nix
@@ -1,9 +1,6 @@
 { lib
-, stdenv
 , fetchFromGitHub
 , rustPlatform
-, darwin
-, libiconv
 }:
 
 rustPlatform.buildRustPackage {
@@ -19,8 +16,6 @@ rustPlatform.buildRustPackage {
 
   cargoHash = "sha256-mMeHTYCUIZR3jVvTxfyH4I9wGfUdCWcyn9djnksAY8k=";
 
-  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [ libiconv darwin.apple_sdk.frameworks.Security ];
-
   # Doc tests are broken on 0.3.3
   doCheck = false;