diff --git a/pkgs/development/python-modules/py-libzfs/default.nix b/pkgs/development/python-modules/py-libzfs/default.nix
index ce976862ea25..b66839c0722f 100644
--- a/pkgs/development/python-modules/py-libzfs/default.nix
+++ b/pkgs/development/python-modules/py-libzfs/default.nix
@@ -4,6 +4,7 @@
   buildPythonPackage,
   fetchFromGitHub,
   fetchpatch2,
+  setuptools,
   cython_0,
   zfs,
 }:
@@ -27,16 +28,16 @@ buildPythonPackage rec {
     })
   ];
 
-  nativeBuildInputs = [ cython_0 ];
+  build-system = [ cython_0 ];
   buildInputs = [ zfs ];
 
   # Passing CFLAGS in configureFlags does not work, see https://github.com/truenas/py-libzfs/issues/107
   postPatch = lib.optionalString stdenv.isLinux ''
     substituteInPlace configure \
-      --replace \
+      --replace-fail \
         'CFLAGS="-DCYTHON_FALLTHROUGH"' \
         'CFLAGS="-DCYTHON_FALLTHROUGH -I${zfs.dev}/include/libzfs -I${zfs.dev}/include/libspl"' \
-      --replace 'zof=false' 'zof=true'
+      --replace-fail 'zof=false' 'zof=true'
   '';
 
   pythonImportsCheck = [ "libzfs" ];