#schroot

[lettie-kuijvenhoven]

[lettie-kuijvenhoven]

[lettie-kuijvenhoven]

[lettie-kuijvenhoven]

[lettie-kuijvenhoven]

[ushf]

On not deploying with virtualenv

Wonderful post on why virtualenv is useful simply for manipulating PATH and PYTHONPATH and should not be used as a deployment mechanism. There is an especially interesting comment about an alternate method for the latter:

lately I have been using debootstrap and schroot to isolate my environments and it’s pretty awesome. I no longer have to worry about bullshit like Gemfile and Bundler and simply install all the gems and libraries I need with “gem” and “apt-get”. If I want a deployable diff of everything then I just use aufs to mount a writable branch on top of the chroot, install all my dependencies, put the top level directory in a debian package and then just ship that or the entire chroot with the writable branch and just set it up on the production box. This setup gives me a truly isolated lightweight environment and reproducable deployment environments in production.

[k-memo]

[paultag]

python-schroot

I've been hacking on some static analyses stuff for debuild.me, and i've been involved in a multi-year long yak shaving exercise. As today's fun part, I wrote python-schroot to help run commands in a schroot chroot (say that 10 times fast!)

After a while, I got some neat stuff working. Here's an honest example:

from schroot import schroot with schroot('unstable-amd64') as chroot: chroot.copy('/etc/issue', '/etc/issue', user='root')

This will copy a file (/etc/issue) from the "host" system into the schroot chroot. Neat!

Now, to run something:

with schroot('unstable-amd64') as chroot: out, err, ret = chroot.run("whoami") print(out)

Then, in an effort to make a DSL, I set out to create the following syntax:

with schroot('unstable-amd64') as chroot: "apt-get update" in chroot

 but, hit some issues with implementing it, and got the following to work:

with schroot('unstable-amd64') as chroot: "apt-get update" > chroot // "root" # apt-get update as root

More later!