[Distutils] buildout removes parts on any change
crucialfelix at gmail.com
Thu Sep 2 18:50:07 CEST 2010
does this fairly represent the policy : buildout removes all files
installed by parts anytime the top parts/develop/egg section changes because
"paranoid is safer".
I can imagine there would be problems, especially when parts depend on other
parts. (checking versions etc)
On Thu, Sep 2, 2010 at 5:48 PM, Jim Fulton <jim at zope.com> wrote:
> Buildout provides a default policy of removing installed files and
> directories *reported by the install method*. I think this is a
> reasonable default policy. It also allows a part to be uninstalled
> even if the original recipe code is unavalable for some reason.
Right, and I've run into that. but actually at that time I had renamed a
develop egg and the buildout failed because the original was missing.
maybe it works for parts but not for develop ?
A recipe author can completely replace this default policy by:
> - Not reporting any installed files in the install method of an
> install recipe, and by
> - providing an uninstall recipe (entry point) that does whatever
> uninstall logic seems desireable.
this would work, but it would be a hack and would be a problem when it
does need to get uninstalled.
but I've got a brighter idea: rather than shutil.copy the whole of django
in each time,
just do a symlink from the download cache.
safe and quick to remove and install
> As an aside, wrt production deployment:
> - We use buildouts to build rpms used to deploy software. Deploying via a
> binary RPM (or a deb or whatever)
- We use buildouts to install/update configuration files independent of
> The recipes needed by this are installed as part of the software
nice, I get it now
does the second buildout get run by the RPM's post-install scripts ?
or do you just install it, then run the config-file buildouts ?
I don't know much about rpm
I've had blow ups when something went wrong using just buildout and then
there isn't a safe way to back out.
tried to add lxml the other day and it failed to build.
so this is definitely a solution for that.
> Jim Fulton
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Distutils-SIG