pandas: fix scipy coo_matrix test

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

@@ -34,6 +34,8 @@ buildPythonPackage rec {
     inherit pname version;
     sha256 = "06vhk75hmzgv1sfbjzgnsw9x10h7y6bd6s6z7d6lfnn7wcgc83zi";
   };
+  # See https://github.com/scipy/scipy/issues/13585 and https://github.com/pandas-dev/pandas/pull/40020
+  patches = [ ./fix-tests.patch ];
 
   nativeBuildInputs = [ cython ];
   buildInputs = lib.optional stdenv.isDarwin libcxx;
@@ -59,16 +61,6 @@ buildPythonPackage rec {
   # https://github.com/NixOS/nixpkgs/issues/39687
   hardeningDisable = lib.optional stdenv.cc.isClang "strictoverflow";
 
-  # For OSX, we need to add a dependency on libcxx, which provides
-  # `complex.h` and other libraries that pandas depends on to build.
-  postPatch = lib.optionalString stdenv.isDarwin ''
-    cpp_sdk="${libcxx}/include/c++/v1";
-    echo "Adding $cpp_sdk to the setup.py common_include variable"
-    substituteInPlace setup.py \
-      --replace "['pandas/src/klib', 'pandas/src']" \
-                "['pandas/src/klib', 'pandas/src', '$cpp_sdk']"
-  '';
-
   # Parallel Cythonization is broken in Python 3.8 on Darwin. Fixed in the next
   # release. https://github.com/pandas-dev/pandas/pull/30862
   setupPyBuildFlags = lib.optionals (!(isPy38 && stdenv.isDarwin)) [

pkgs/development/python-modules/pandas/fix-tests.patch

@@ -0,0 +1,12 @@
+diff --color -ur a/pandas/tests/arrays/sparse/test_array.py b/pandas/tests/arrays/sparse/test_array.py
+--- a/pandas/tests/arrays/sparse/test_array.py	2020-12-07 12:42:08.000000000 +0100
++++ b/pandas/tests/arrays/sparse/test_array.py	2021-02-27 21:48:16.483903149 +0100
+@@ -1188,7 +1188,7 @@
+         row = [0, 3, 1, 0]
+         col = [0, 3, 1, 2]
+         data = [4, 5, 7, 9]
+-        sp_array = scipy.sparse.coo_matrix((data, (row, col)))
++        sp_array = scipy.sparse.coo_matrix((data, (row, col)), dtype="int")
+         result = pd.Series.sparse.from_coo(sp_array)
+ 
+         index = pd.MultiIndex.from_arrays([[0, 0, 1, 3], [0, 2, 1, 3]])