From 5041c8525a2b9b5269a562402905c64819d9ea1a Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 1 Dec 2015 22:00:47 +0530
Subject: [PATCH] Finish up instructions for building python with VS 2015

---
 setup/installer/windows/install_python.py | 126 ++++++++++++++++++++++
 setup/installer/windows/notes2.rst        |  12 ++-
 2 files changed, 134 insertions(+), 4 deletions(-)
 create mode 100644 setup/installer/windows/install_python.py

diff --git a/setup/installer/windows/install_python.py b/setup/installer/windows/install_python.py
new file mode 100644
index 0000000000..47de18ee88
--- /dev/null
+++ b/setup/installer/windows/install_python.py
@@ -0,0 +1,126 @@
+#!/usr/bin/env python2
+# vim:fileencoding=utf-8
+# Copyright: 2015, Kovid Goyal <kovid at kovidgoyal.net>
+
+from __future__ import (unicode_literals, division, absolute_import,
+                        print_function)
+import sys
+import re
+import shutil
+import os
+import glob
+
+known_extensions = {
+    'bz2.pyd',
+    'pyexpat.pyd',
+    'select.pyd',
+    'unicodedata.pyd',
+    'winsound.pyd',
+    '_elementtree.pyd',
+    '_bsddb.pyd',
+    '_socket.pyd',
+    '_ssl.pyd',
+    '_testcapi.pyd',
+    '_tkinter.pyd',
+    '_msi.pyd',
+    '_ctypes.pyd',
+    '_ctypes_test.pyd',
+    '_sqlite3.pyd',
+    '_hashlib.pyd',
+    '_multiprocessing.pyd'
+}
+
+
+def main():
+    if len(sys.argv) != 2:
+        raise SystemExit('Usage: python %s install_dir' % sys.argv[0])
+    install_dir = os.path.abspath(os.path.join(os.path.expanduser(
+        sys.argv[-1]), 'python'))
+    exedir = os.path.dirname(os.path.abspath(sys.executable))
+    cwd = exedir
+    while not cwd.lower().endswith('pcbuild'):
+        b = cwd
+        cwd = os.path.dirname(cwd)
+        if b == cwd or not cwd:
+            raise SystemExit(
+                'python not running form the build directory')
+    os.chdir(os.path.dirname(cwd))
+
+    # Clear out install_dir, preserving site-packages
+    if os.path.exists(install_dir):
+        for x in os.listdir(install_dir):
+            if x != 'site-packages':
+                path = os.path.join(install_dir, x)
+                (shutil.rmtree if os.path.isdir(path) else os.remove)(path)
+    else:
+        os.mkdir(install_dir)
+
+    # Copy executables
+    for exe in (os.path.join(exedir, x + '.exe')
+                for x in 'python pythonw'.split()):
+        shutil.copy2(exe, install_dir)
+
+    # Copy extensions
+    dll_dir = os.path.join(install_dir, 'DLLs')
+    os.mkdir(dll_dir)
+    found_extensions = set()
+    for pyd in glob.glob(os.path.join(exedir, '*.pyd')):
+        found_extensions.add(os.path.basename(pyd))
+        shutil.copy2(pyd, dll_dir)
+    for pyd in known_extensions - found_extensions:
+        print('WARNING: Extension %s not found, ignoring' % pyd)
+    have_tcl = '_tkinter.pyd' in found_extensions
+
+    # Copy dlls
+    for dll in glob.glob(os.path.join(exedir, '*.dll')):
+        if os.path.basename(dll).startswith('python'):
+            shutil.copy2(dll, install_dir)
+        else:
+            shutil.copy2(dll, dll_dir)
+
+    # Copy import libraries
+    lib_dir = os.path.join(install_dir, 'libs')
+    os.mkdir(lib_dir)
+    for lib in glob.glob(os.path.join(exedir, '*.lib')):
+        shutil.copy2(lib, lib_dir)
+
+    # Copy the headers
+    include_dir = os.path.join(install_dir, 'include')
+    os.mkdir(include_dir)
+    shutil.copy2(os.path.join('PC', 'pyconfig.h'), include_dir)
+    for x in glob.glob(os.path.join('Include', '*.h')):
+        shutil.copy2(x, include_dir)
+
+    # Make the Scripts dir
+    os.mkdir(os.path.join(install_dir, 'Scripts'))
+
+    # Copy the python modules in Lib
+    ignored_dirs = frozenset('pydoc_data test tests lib2to3 ensurepip'.split())
+    if not have_tcl:
+        ignored_dirs |= frozenset(('lib-tk', 'idlelib', 'Icons'))
+
+    def ignore_in_lib(basedir, items):
+        ignored = set()
+        for item in items:
+            is_dir = os.path.isdir(os.path.join(basedir, item))
+            if (is_dir and (
+                    item in ignored_dirs or item.startswith('plat-'))) or \
+               (not is_dir and item.rpartition('.')[-1].lower() != 'py'):
+                ignored.add(item)
+        return ignored
+
+    shutil.copytree('Lib', os.path.join(install_dir, 'Lib'),
+                    ignore=ignore_in_lib)
+
+    with open(os.path.join(install_dir, 'Lib', 'mimetypes.py'), 'r+b') as f:
+        raw = f.read()
+        f.seek(0), f.truncate(0)
+        raw, num = re.subn(br'try:.*?import\s+_winreg.*?None', br'_winreg = None', raw, count=1, flags=re.DOTALL)
+        if num != 1:
+            raise SystemExit('Failed to patch mimetypes.py')
+        f.write(raw)
+
+    print('python installed to:', install_dir)
+
+if __name__ == '__main__':
+    main()
diff --git a/setup/installer/windows/notes2.rst b/setup/installer/windows/notes2.rst
index 861d9effd0..875796c874 100644
--- a/setup/installer/windows/notes2.rst
+++ b/setup/installer/windows/notes2.rst
@@ -110,18 +110,22 @@ First run::
 
 For 64-bit ::
 
-    ./run.bat x64 || echo "\n\nPython compilation failed!"
+    ./run.bat x64 || echo '\n\nPython compilation failed!'
 
 For 32-bit::
 
-    ./run.bat Win32 || echo "\n\nPython compilation failed!"
+    ./run.bat Win32 || echo '\n\nPython compilation failed!'
 
 Run the python test suite, as::
 
     ./PCbuild/*/python.exe Lib/test/regrtest.py -u network,cpu,subprocess,urlfetch
 
-Edit Lib/mimetypes.py and set _winreg = None to prevent reading
-of mimetypes from the windows registry
+Install python as::
+
+    ./PCbuild/amd64/python.exe /cygwin64/home/kovid/build/calibre/setup/installer/windows/install_python.py /cygwin64/home/kovid/sw/private
+
+Make sure ~/sw/private/python is in your PATH
+
 
 Basic dependencies
 --------------------