[Neuroimaging] Technical details managing Python versions and packages.
lists at onerussian.com
Mon Aug 3 20:40:30 CEST 2015
On Mon, 03 Aug 2015, Matthew Brett wrote:
> >> You can also easily junk a set of installs with:
> >> rmvirtualenv my-env
> >> How do you do that?
> > not sure on specifics of this question -- "rm -rf my-env"? ;) My
> > virtualenvs aren't usually long-lived.
> Sorry - I only meant that - if I do say apt-get install python-vtk -
> then I will get that package and all the relevant dependencies, as
> decided by the packager. Then I will get those packages in all my
> virtualenvs with ``--system-site-packages``, past and present, which
> might change their behavior.
that is right! and if my package depends on that behavior, and starts
to fail -- I better know that! ;)
> So I can't easily do evanescent installs
> of these packages, as I can with the wheels / virtualenvs approach.
noone forbids you to use virtualenv without --system-site-packages if
pypi-as-of-today-pristine state is what you want/need. In my case I
rarely need/want a sanitarization at this level.
Yaroslav O. Halchenko, Ph.D.
http://neuro.debian.net http://www.pymvpa.org http://www.fail2ban.org
Research Scientist, Psychological and Brain Sciences Dept.
Dartmouth College, 419 Moore Hall, Hinman Box 6207, Hanover, NH 03755
Phone: +1 (603) 646-9834 Fax: +1 (603) 646-1419
More information about the Neuroimaging