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==
...
https://hydra.nixos.org/build/70700906
I opened an upstream bug, but their bug system is e-mail based and I
haven't got a single reply which contains an web link :(
Update all factorio packages to their latest version. The fact that the
experimental version is lower than the alpha version is just because
they haven't made an experimental release after the last stable.