Catching up

[Gary E. Miller]

Yo Richard!

On Sun, 7 Jan 2018 16:27:11 -0600
Richard Laager via devel <devel at ntpsec.org> wrote:

> On 01/07/2018 04:27 AM, Hal Murray via devel wrote:
> > Is there a recipe for setting our stuff up to use Python3 when the
> > system defaults python to Python2?  

Depends a lot on what OS you are using.  On gentoo just use
eselect.

> For the Debian packaging, I do two things:
> 
> 1) Instead of ./waf configure/build/install, I use: python3 waf ...
> 2) I patch the #!/usr/bin/env python to be #!/usr/bin/python3
> 
> This isn't fully thought through, but one idea would be:
> 
> Have waf capture the path to python. Then, substitute that in during
> ./waf install. Instead of the default substitution (@VARIABLE@), I
> would probably do a custom one. That way, the scripts can be run
> directly from the source tree (with the /usr/bin/env shebang).

Do what you want on Debian, but that would be bad on Gentoo.  Gentoo
has a tool called eselect.  With it I can select what version of python
to use as system default from the command line.  Just one simple
command.

For Gentoo, embedding versions in files is officially discouraged.

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at rellim.com  Tel:+1 541 382 8588

	    Veritas liberabit vos. -- Quid est veritas?
    "If you can’t measure it, you can’t improve it." - Lord Kelvin
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