[Distutils] installing to a non-standard directory
pje at telecommunity.com
Sun Nov 21 19:33:37 CET 2010
At 03:39 PM 11/20/2010 -0800, K. Richard Pixley wrote:
>Context #1: an alternate packaging mechanism. I want to use that
>packaging mechanism because it's the most appropriate way to package
>and distribute my module for this application. The packaging
>mechanism involves calling "install", (typically "make install
>prefix=/tmp/jail", but there's no reason it couldn't be "python
>setup.py install"), in a sort of jail. Anything installed during
>that encapsulation is recorded and those pieces are the ones which
>are picked up and packaged by the automatic packaging system.
Use --root, then. That's what it's for.
>Context #2: cross development. I'm running on one system producing
>a root file system which will be used later to boot a new
>system. This is another application of "make install PREFIX=/tmp/newroot"
Likewise, this is what --root is for.
In both of the above cases, you want the prefix of anything you build
to be set up for the prefix where it's really going to *end up*
installed, not to the temporary directory where you're
mock-installing it to. That's why all distutils' internal commands
use --root when they call an install operation for packaging.
>What I want to do is to manage and build my tool in python,
>including nose tests outside of bitbake, as a component within
>openembedded. This means that bitbake will build the component and
>install the component into a staging area which is unique to this
>particular build directory. It can then import the tool from the
>local staging area and use it.
>What I want to do is the moral equivalent of "make install
>prefix=foo" or "make install DESTDIR=foo". It's a common task with
>numerous applications. This shouldn't be difficult and I really
>can't believe that I'm the first person using python to want to do
>this. It's a 10 character command line option. There should be
>something comparably simple in distutils/setuptools/whatever, no?
Yes. It's --root. ;-)
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