fabfile.py

fabfile.py

"""
Fabric configuration for a Python 3.3 environment using Anaconda.
"""

from fabric.api import run, cd
from fabric.context_managers import prefix

CONDA_REPO = 'http://repo.continuum.io/miniconda/'
CONDA_VERS = 'Miniconda3-3.0.0-Linux-x86_64.sh'


DEPENDENCIES = [
    'pip',
    'numpy',
    'scipy',
    'matplotlib',
    'ipython',
    'scikit-learn',
    'scikit-image',
    'pandas',
    'geos',
    'requests']


def setup(install_prefix='~'):
    """
    Install an anaconda environment.
    """
    _base_environment(install_prefix)
    _dependencies(install_prefix)


def _dependencies(install_prefix):
    """
    Install a set of binary packages and then some patched packages to support
    Python > 3.
    """

    with prefix('source {}/anaconda/bin/activate python-devel'.format(install_prefix)):

        for module in DEPENDENCIES:
            run('{}/anaconda/bin/conda install --yes {}'.format(install_prefix, module))

        # PyProj (requires proj4 on the remote system)
        with cd('{}/downloads'.format(install_prefix)):
            run('svn checkout http://pyproj.googlecode.com/svn/trunk/ pyproj')
            with cd('pyproj'):
                run('python setup.py build install')
            run('rm -rf pyproj')

        # CartoPy (like basemap)
        run('pip install git+https://github.com/esc24/cartopy.git@three_osx_new')

        # Fabric
        run('pip install git+https://github.com/scottkmaxwell/paramiko.git@py3-support-without-py25')
        run('pip install contextlib2')
        run('pip install git+https://github.com/pashinin/fabric.git@p33')


def _base_environment(install_prefix):
    """
    Creates a "standard" python working environment.
    """

    run('mkdir -p {}/downloads'.format(install_prefix))

    with cd('{}/downloads'.format(install_prefix)):
        run('wget -nv -N {}{}'.format(CONDA_REPO, CONDA_VERS))
        run('sh {} -b -p {}/anaconda/'.format(CONDA_VERS, install_prefix))

    with cd('{}/anaconda/bin'.format(install_prefix)):
        run('./conda create --yes -n python-devel python=3.7')


def clean(install_prefix='~'):
    """
    Removes a standard working environment.
    """
    run('rm -rf {}/anaconda'.format(install_prefix))