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Subject: Re: Python extraneous dependencies
From: Yaakov Selkowitz <yselkowitz@cygwin.com>
To: cygwin@cygwin.com
In-Reply-To: <5c73e2de.1c69fb81.51805.32cd@mx.google.com>
References: <a22c262a6916033450bc011dc181bc6f553a9baf.camel@cygwin.com>	 <5c73e2de.1c69fb81.51805.32cd@mx.google.com>
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Date: Mon, 25 Feb 2019 22:11:15 -0600
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On Mon, 2019-02-25 at 04:43 -0800, Steven Penny wrote:
> On Sun, 24 Feb 2019 17:42:36, Yaakov Selkowitz wrote:
> > On Sat, 2019-02-23 at 16:29 -0800, Steven Penny wrote:
> > > I noticed that "python36" requires "binutils".
> > 
> > This is needed for ctypes.util.find_library().  FWIW, on Linux, not
> > only binutils is used, but also gcc.
> > 
> > > Further, I noticed this dependency chain:
> > > 
> > >     python36 > libuuid-devel > pkg-config > libglib2.0_0
> > 
> > Until 3.7, the uuid stdlib module loads libuuid via ctypes, hence the
> > dependency.  In 3.7, there is a compiled binding, and so the -devel
> > dependency was dropped.  Also, pkgconf will soon be providing and
> > replacing pkg-config, which will cause the glib2.0 dependency to be
> > dropped.
> 
> thanks. i was interested further in comparison so i took this file:
> 
> https://python.org/ftp/python/3.6.8/python-3.6.8-embed-amd64.zip
> 
> then use tar for fair comparison:
> 
>     tar -a -c -f python-3.6.8-embed-amd64.tar.xz python-3.6.8-embed-amd64

Did you look at the contents of that zip file?  It's quite minimal, and
therefore not a fair comparison at all.

> and that doesnt include the other packages i previously discussed. so it almost
> makes more sense to not even use the cygwin version?

Hardly, but discussing how/why *not* to use Cygwin is OT IMO.

--
Yaakov


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