Problem
Windows binary installers often have dependencies on other binary libraries which one would like to include in the filename for the installer such as PyOpenGL-2.0.1-Numpy23.exe
Solution
Subclass bdist_wininst to introduce a customisation point for acquiring the filename.
import sys, os, string, struct
from distutils.command.bdist_wininst import bdist_wininst
class BdistWinInstaller(bdist_wininst):
"""Version of bdist_wininst with customization point for filename
This class should operate identically to the built-in
class, it exists solely to provide the customization point.
"""
def get_installer_filename(self, directory, fullname, target_version= None):
"""Calculate the final installer filename"""
if target_version:
return os.path.join(
directory,
"%s.win32-py%s.exe" % (
fullname,
target_version
)
)
else:
return os.path.join(
directory,
"%s.win32.exe" % fullname
)
def create_exe (self, arcname, fullname, bitmap=None):
"""Do the actual creation of the executable file
The base command, unfortunately, does not break down
this command into sub-commands, so this method is
almost entirely a duplication of the base-class method,
with the only noticeable difference being the
call to get_installer_filename(...) instead of
calculating the filename inline.
"""
import struct
self.mkpath(self.dist_dir)
cfgdata = self.get_inidata()
installer_name = self.get_installer_filename(
self.dist_dir,
fullname,
self.target_version,
)
self.announce("creating %s" % installer_name)
if bitmap:
bitmapdata = open(bitmap, "rb").read()
bitmaplen = len(bitmapdata)
else:
bitmaplen = 0
file = open(installer_name, "wb")
file.write(self.get_exe_bytes())
if bitmap:
file.write(bitmapdata)
file.write(cfgdata)
header = struct.pack("<iii",
0x1234567A, # tag
len(cfgdata), # length
bitmaplen, # number of bytes in bitmap
)
file.write(header)
file.write(open(arcname, "rb").read())
Discussion
This might be better introduced as part of the core rather than as a seperate recipe, as the customisation point doesn't alter the base operation, just provides a hook for the customisation.