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I want the script to dynamically instantiate the venv is call activate this at execution time and deactivate when done.



On June 23, 2016 5:12:07 PM EDT, Doug Hellmann <doug at doughellmann.com> wrote:
>Excerpts from Silence Dogood's message of 2016-06-23 15:45:34 -0400:
>> I know from conversations that a few folks package their python apps
>as
>> distributable virtualenvs.   spotify created dh-virtualenv for this. 
>you
>> can do it pretty simply by hand.
>> 
>> I built a toolchain for building rpms as distributable virtualenvs
>and that
>> works really well.
>> 
>> What I'd like to do is make it so that every app that's built as a
>> virtualenv gets setup to automatically execute at call time in their
>> virtualenv.
>> 
>> I see two options:
>> 
>> 1)  Dynamically generate a wrapper script during build and put it in
>the
>> RPM.  Call the wrapper.
>> 
>> 2)  Created a dependency global module ( as an rpm ) set it as a
>> dependency.  And basically it'd be an autoexecuting import that
>> instantiates the virtualenv.  it would probably know all it needs to
>> because I am building all my packages to an internal standard.  Then
>when
>> building the APP rpm all I need to do is inject an import into the
>import
>> chain if it's being built as a virtualenv.  Then I have what are
>> effectively statically compiled python apps.
>> 
>> I like 2.  But 1 isn't very bad.  Both are a little hokey.
>> 
>> Was curious if folks might have a preference, or a better idea.
>> 
>> Thanks.
>> 
>> Matt
>
>I'm not sure what you mean by a "wrapper script".  If you run the
>Python console script from within the virtualenv you've packaged,
>you shouldn't need to do anything to "activate" that environment
>separately because it should have the correct shebang line.
>
>Are you seeing different behavior?
>
>Doug
>
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