Hooks: numpy: Fix/simplify numpy hook.

- Add hidden import `numpy.core._dtype_ctypes`.
- Exclude numpy's testing and C/Fortran compiling code, and
  everything else it drags with it (namely scipy).
- Remove now unneeded special Conda hadling which is superseeded
  by #5213.

PyInstaller/hooks/hook-numpy.py

@@ -1,54 +1,45 @@
-# -----------------------------------------------------------------------------
-# Copyright (c) 2013-2020, PyInstaller Development Team.
+#!/usr/bin/env python3
+
+# --- Copyright Disclaimer ---
+#
+# In order to support PyInstaller with numpy<1.20.0 this file will be
+# duplicated for a short period inside PyInstaller's repository [1]. However
+# this file is the intellectual property of the NumPy team and is under the
+# terms and conditions outlined their repository [2].
 #
-# Distributed under the terms of the GNU General Public License (version 2
-# or later) with exception for distributing the bootloader.
+# .. refs:
 #
-# The full license is in the file COPYING.txt, distributed with this software.
+#   [1] PyInstaller: https://github.com/pyinstaller/pyinstaller/
+#   [2] NumPy's license: https://github.com/numpy/numpy/blob/master/LICENSE.txt
 #
-# SPDX-License-Identifier: (GPL-2.0-or-later WITH Bootloader-exception)
-# -----------------------------------------------------------------------------
-import os
-import glob
-from PyInstaller.compat import is_win, is_venv, base_prefix
-from PyInstaller.utils.hooks import get_module_file_attribute
+"""
+This hook should collect all binary files and any hidden modules that numpy
+needs.
+
+Our (some-what inadequate) docs for writing PyInstaller hooks are kept here:
+https://pyinstaller.readthedocs.io/en/stable/hooks.html
 
-# numpy.testing is unconditionally imported by numpy, thus we can not exclude
-# .testing (which would be preferred). Anyway, this only saves about 7
-# modules. See also https://github.com/numpy/numpy/issues/17183
-#excludedimports = ["numpy.testing"]
+PyInstaller has a lot of numpy users so we'd consider maintaining this hook to
+be high priority. Feel free to @mention either bwoodsend or Legorooj on Github
+for help keeping it working.
+"""
 
-# FIXME check if this workaround is still necessary!
-if is_win:
-    from PyInstaller.utils.win32.winutils import extend_system_path
-    from distutils.sysconfig import get_python_lib
-    # SciPy/Numpy Windows builds from http://www.lfd.uci.edu/~gohlke/pythonlibs
-    # contain some dlls in directory like C:\Python27\Lib\site-packages\numpy\core\
-    numpy_core_paths = [os.path.join(get_python_lib(), 'numpy', 'core')]
-    # In virtualenv numpy might be installed directly in real prefix path.
-    # Then include this path too.
-    if is_venv:
-        numpy_core_paths.append(
-            os.path.join(base_prefix, 'Lib', 'site-packages', 'numpy', 'core')
-        )
-    extend_system_path(numpy_core_paths)
-    del numpy_core_paths
+from PyInstaller.utils.hooks import collect_dynamic_libs
+from PyInstaller.compat import is_conda
 
-# if we bundle the testing module, this will cause
-# `scipy` to be pulled in unintentionally but numpy imports
-# numpy.testing at the top level for historical reasons.
-# excludedimports = collect_submodules('numpy.testing')
+# Collect all DLLs inside numpy's installation folder, dump them into built
+# app's root.
+binaries = collect_dynamic_libs("numpy", ".")
 
-binaries = []
+# Submodules PyInstaller can't detect (probably because they're only imported
+# by extension modules which PyInstaller can't read).
+hiddenimports = ['numpy.core._dtype_ctypes']
+if is_conda:
+    hiddenimports.append("six")
 
-# package the DLL bundle that official numpy wheels for Windows ship
-# The DLL bundle will either be in extra-dll on windows proper
-# and in .libs if installed on a virtualenv created from MinGW (Git-Bash
-# for example)
-if is_win:
-    extra_dll_locations = ['extra-dll', '.libs']
-    for location in extra_dll_locations:
-        dll_glob = os.path.join(os.path.dirname(
-            get_module_file_attribute('numpy')), location, "*.dll")
-        if glob.glob(dll_glob):
-            binaries.append((dll_glob, "."))
+# Remove testing and building code and packages which are referenced but aren't
+# really dependencies.
+excludedimports = [
+    "scipy", "pytest", "nose", "distutils", "f2py", "setuptools", "numpy.f2py",
+    "numpy.distutils",
+]