From e9f05ffa9b935a6b9d672ebc6b51a19942f0ad13 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Sun, 8 Jul 2018 18:48:49 +0100
Subject: [PATCH] python.pkgs.pystemmer: fix compilation with python3.7

---
 .../python-modules/pystemmer/default.nix      | 28 +++++++++++++++++++
 pkgs/top-level/python-packages.nix            | 20 +------------
 2 files changed, 29 insertions(+), 19 deletions(-)
 create mode 100644 pkgs/development/python-modules/pystemmer/default.nix

diff --git a/pkgs/development/python-modules/pystemmer/default.nix b/pkgs/development/python-modules/pystemmer/default.nix
new file mode 100644
index 000000000000..e569042f729a
--- /dev/null
+++ b/pkgs/development/python-modules/pystemmer/default.nix
@@ -0,0 +1,28 @@
+{ stdenv, python, fetchPypi, buildPythonPackage, cython }:
+
+buildPythonPackage rec {
+  pname = "PyStemmer";
+  version = "1.3.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "d1ac14eb64978c1697fcfba76e3ac7ebe24357c9428e775390f634648947cb91";
+  };
+
+  nativeBuildInputs = [ cython ];
+
+  preBuild = ''
+    cython src/Stemmer.pyx
+  '';
+
+  checkPhase = ''
+    ${python.interpreter} runtests.py
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Snowball stemming algorithms, for information retrieval";
+    homepage = http://snowball.tartarus.org/;
+    license = licenses.mit;
+    platforms = platforms.unix;
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 281f90a73ef4..68328b7ca775 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -10966,25 +10966,7 @@ in {
     };
   };
 
-  PyStemmer = buildPythonPackage (rec {
-    name = "PyStemmer-1.3.0";
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/P/PyStemmer/${name}.tar.gz";
-      sha256 = "d1ac14eb64978c1697fcfba76e3ac7ebe24357c9428e775390f634648947cb91";
-    };
-
-    checkPhase = ''
-      ${python.interpreter} runtests.py
-    '';
-
-    meta = {
-      description = "Snowball stemming algorithms, for information retrieval";
-      homepage = http://snowball.tartarus.org/;
-      license = licenses.mit;
-      platforms = platforms.unix;
-    };
-  });
+  PyStemmer = callPackage ../development/python-modules/pystemmer {};
 
   Pyro = callPackage ../development/python-modules/pyro { };