[Distutils] [ANN] setuptools post install script for bdist_wininst

[Manlio Perillo]

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Hi.

Following the suggestion to use a post installation script in order to
install dependencies for a package installed using bdist_wininst, I
wrote this reusable script:

http://paste.pocoo.org/show/260644/


In order to use it, the script must be declared as a script in the
setup.py file.
In order to ensure setuptools is installed, the same should be do with
the ez_setup bootstrap script.

The ez_post_install script will do:

1) Get the installed project name by parsing the bdist_wininst file name
2) Make sure setuptools is installed (if ez_setup is available)
3) Install all dependencies of the installed package, using easy_install
4) Optionally add shortcuts of all gui scripts in the
   Start Menu\Programs\<project name> special folder
5) Optionally add shortcuts of all gui scripts in the Desktop


Problems
========

Since the post install script may take some time downloading and
installing packages, the UI of the Windows installer is frozen, without
giving user any feedback.
This is a problem with the installer, since stdout and stderr are fully
buffered.

TODO
====

In case a dependency have extension code that must compiled, in 99% of
the cases the post install script will fail, since the compiler or some
library is not available.

This should not happen; the post install script should, instead, check
if in the package download_url there is a bdist_wininst executable,
download it and execute it.



Suggestions are welcome.


Manlio Perillo
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