[python-win32] building a complicated Python application on Windows

[Bill Janssen]

Trent Nelson <trent at trent.me> wrote:

> Ah, so that's just the error that `python setup.py build` would have returned, it's not specific to conda-build.
> 
> As for what version you need, that's where things get fun:
> 	- Python 2.7		= Visual Studio 2008
> 	- Python 3.0->3.4	= Visual Studio 2010
> 	- Python 3.5+		= Visual Studio 2015
> 
> For 2.7, Microsoft released this handy little bundle (thanks Steve Dower!): https://www.microsoft.com/en-us/download/details.aspx?id=44266

I installed this and it still doesn't work.  Just spent an hour
researching it, and I've got to tell you, I can't believe we let
ourselves into this situation.  It's really bad.  The code in
distutils/msvc9compiler.py insists that even if you set the env var
VS90COMNTOOLS to point to your installation, it still has to be in a
subdirectory called "VC", which the the Microsoft bundle doesn't do.
"vcvarsall.bat" winds up in
"~/AppData/Local/Programs/Common/Microsoft/Visual C++ for Python/9.0/vcvarsall.bat".

And the Microsoft bundle doesn't set any of the registry keys
msvc9compiler.py looks for, so it can't find it that way.

I went down into the installed VC, copied vcvarsall.bat to be where
msvc9compiler.py wanted to find it, set the env var, and finally got it.

This is nasty.

Bill

> 
> I've been lucky enough to always have MSDN subscriptions and full VS installations so I'm not sure how your mileage will fair with the community/free editions.  You could sign up for an AppVeyor or Anaconda account if procuring VS proves problematic.
> 
> 	Trent.
> 
> -----Original Message-----
> From: Bill Janssen [mailto:janssen at parc.com] 
> Sent: Friday, December 18, 2015 8:02 PM
> To: Trent Nelson <trent at trent.me>
> Cc: python-win32 at python.org; janssen at parc.com
> Subject: Re: [python-win32] building a complicated Python application on Windows
> 
> Hmmm, I'm getting an error message from 'conda build':
> 
> Warning: Couldn't find Visual Studio: 'C:\\Program Files (x86)\\Common Files\\Microsoft\\Vi...'
> 
> So I guess installing conda-build doesn't do everything it needs to?
> How would I know which version of Visual Studio to install, and where to find it?
> 
> Bill
> 
> Trent Nelson <trent at trent.me> wrote:
> 
> > Conda is well suited to this.  I use it to bundle all sorts of stuff on Windows.  (You write recipes (see https://github.com/conda/conda-recipes for examples), then 'conda build' them, which produces a package that can be subsequently installed with conda install.  Can sign up to anaconda.org and then upload the package into your own channel, such that a plain 'conda install -c janssen foobar' will install your package and all the deps (which were specified in the recipe/meta.yaml).
> > 
> > Sent from my iPhone
> > 
> > > On Dec 16, 2015, at 13:00, Bill Janssen <janssen at parc.com> wrote:
> > > 
> > > I'd like to build a Python-based deliverable for Windows.  It 
> > > includes many gnarly packages, like numpy, scipy, statsmodel, 
> > > ggplot, kivy, ZODB, ZEO, etc.  They include Cython modules (and 
> > > scipy may even require Fortran, for all I know).
> > > 
> > > On OS X, I build this all from source by starting with Kivy, which 
> > > is packaged as a venv inside an OS X application, and add in the 
> > > other stuff.  But I'm not sure this is the best way to proceed on 
> > > Windows (7, 8, and 10).  I'm also used to using mingw on Windows, 
> > > but again, I'm not sure that's appropriate.
> > > 
> > > Any advice would be appreciated...
> > > 
> > > Bill
> > > _______________________________________________
> > > python-win32 mailing list
> > > python-win32 at python.org
> > > https://mail.python.org/mailman/listinfo/python-win32