python.pkgs.pysoundfile: move expression

pkgs/development/python-modules/pysoundfile/default.nix

@@ -0,0 +1,38 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pytest
+, numpy
+, libsndfile
+, cffi
+, isPyPy
+, stdenv
+}:
+
+buildPythonPackage rec {
+  pname = "PySoundFile";
+  name = "PySoundFile-${version}";
+  version = "0.8.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "72c3e23b7c9998460ec78176084ea101e3439596ab29df476bc8508708df84df";
+  };
+
+    checkInputs = [ pytest ];
+    propagatedBuildInputs = [ numpy libsndfile cffi ];
+
+    meta = {
+      description = "An audio library based on libsndfile, CFFI and NumPy";
+      license = lib.licenses.bsd3;
+      homepage = https://github.com/bastibe/PySoundFile;
+      maintainers = with lib.maintainers; [ fridh ];
+    };
+
+    prePatch = ''
+      substituteInPlace soundfile.py --replace "'sndfile'" "'${libsndfile.out}/lib/libsndfile.so'"
+    '';
+
+    # https://github.com/bastibe/PySoundFile/issues/157
+    disabled = isPyPy ||  stdenv.isi686;
+}