diff --git a/pkgs/development/python-modules/python-hfst/default.nix b/pkgs/development/python-modules/python-hfst/default.nix

index cfc0248fcd55608ffdf2abfd460b7fd45e868849..c53ecef2cdf6dbb1aab2ec7d05f24effcda7dd5e 100644

--- a/pkgs/development/python-modules/python-hfst/default.nix

+++ b/pkgs/development/python-modules/python-hfst/default.nix

@@ -1,10 +1,10 @@

{ lib, python3Packages, hfst, swig }:

-python3Packages.buildPythonPackage {

+python3Packages.buildPythonPackage rec {

pname = "python-hfst";

inherit (hfst) src version;

• sourceRoot = "hfst-src/python";

• sourceRoot = "${src.name}/python";

buildInputs = [ hfst ];