pythonPackages.Rtree: init at 0.8.3

This is a commonly-used package for spatial indexing.

Strangely enough, the tests are broken due to memory unsafety that I was unable
to reproduce under Debian. For instance, when run with Python 3.6 valgrind
reports,

==10453== Invalid read of size 4
==10453== at 0x4EF1DFA: _PyObject_Free (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4FE7D96: _PyFaulthandler_Fini (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4F8438D: Py_FinalizeEx (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4F9F398: Py_Main (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x400BDF: main (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/bin/python3.6)
==10453== Address 0x67b1020 is 352 bytes inside a block of size 640 free'd
==10453== at 0x4C2DD6B: free (in /nix/store/6z028lfnxyhh8dlngpm6zrkwqxmbglj4-valgrind-3.13.0/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10453== by 0x4EDDC4A: free_keys_object (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4EDEE63: dict_dealloc (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4EECF59: module_clear (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4FA062B: collect (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4FA13A0: _PyGC_CollectNoFail (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4F79CED: PyImport_Cleanup (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4F8436F: Py_FinalizeEx (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4F9F398: Py_Main (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x400BDF: main (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/bin/python3.6)
==10453==
==10453== Conditional jump or move depends on uninitialised value(s)
==10453== at 0x4EF1E03: _PyObject_Free (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4EFEF2D: type_dealloc (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4EFD009: subtype_dealloc (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4FA063E: collect (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4FA13A0: _PyGC_CollectNoFail (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4F79DF8: PyImport_Cleanup (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4F8436F: Py_FinalizeEx (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x4F9F398: Py_Main (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/lib/libpython3.6m.so.1.0)
==10453== by 0x400BDF: main (in /nix/store/azw9ys2m2fpfzf730xjcxja890gpyp58-python3-3.6.4/bin/python3.6)
==10453==
...

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

···
+{ stdenv, buildPythonPackage, fetchPypi, libspatialindex, numpy }:
+
+buildPythonPackage rec {
+  pname = "Rtree";
+  version = "0.8.3";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0jc62jbcqqpjcwcly7l9zk25bg72mrxmjykpvfiscgln00qczfbc";
+  };
+
+  propagatedBuildInputs = [ libspatialindex ];
+
+  patchPhase = ''
+    substituteInPlace rtree/core.py --replace \
+      "find_library('spatialindex_c')" "'${libspatialindex}/lib/libspatialindex_c${stdenv.hostPlatform.extensions.sharedLibrary}'"
+  '';
+
+  # Tests appear to be broken due to mysterious memory unsafe issues. See #36760
+  doCheck = false;
+  checkInputs = [ numpy ];
+
+  meta = with stdenv.lib; {
+    description = "R-Tree spatial index for Python GIS";
+    homepage = https://toblerity.org/rtree/;
+    license = licenses.lgpl21;
+    maintainers = with maintainers; [ bgamari ];
+  };
+}

pkgs/top-level/python-packages.nix

···
     };
   };
 
+  Rtree = callPackage ../development/python-modules/Rtree { inherit (pkgs) libspatialindex; };
+
   squaremap = buildPythonPackage rec {
     name = "squaremap-1.0.4";
     disabled = isPy3k;