urm

Ur Management Tool

Virtual Environment

Activate and Dectivate

I don't use a bin/activate script. Instead, I use shell macros:

activate () {
    export VIRTUAL_ENV="$(pwd -P)"
    _OLD_VIRTUAL_PATH="$PATH"
    PATH="$VIRTUAL_ENV/bin:$PATH"
    hash -r
    _OLD_VIRTUAL_PROMPT="$PROMPT"
    PROMPT="%{%B%F{cyan}%}py:$(basename $VIRTUAL_ENV)%{%f%b%} $PROMPT"
}

deactivate () {
    if [ -n "$_OLD_VIRTUAL_PATH" ]
    then
        PATH="$_OLD_VIRTUAL_PATH"
        unset _OLD_VIRTUAL_PATH
    fi
    hash -r
    if [ -n "$_OLD_VIRTUAL_PROMPT" ]
    then
        PS1="$_OLD_VIRTUAL_PROMPT"
        unset _OLD_VIRTUAL_PROMPT
    fi
    unset VIRTUAL_ENV
    unset PYTHONHOME
    unset PYTHONPATH
}

Requirements

I want to rely as much as possible on Debian packages instead of pip, so I don't have install_requires in setup.py or a requirements.txt file.

So, some manual setup will be required: sudo apt-get install python3-paramiko sudo apt-get install python3-lxml sudo apt-get install python3-dnspython

You can install these using pip3, too: paramiko lxml dnspython3

Install self

I want to be able to edit in the source directory, so I use -e after running activate:

pip3 install -e .

Then, when activated, "urm" will work. Alternatively, ~/.local/bin/urm will also work. This can be linked from ~/bin/urm so that activate and deactivate are not required.

I realize this is not best practice, but when I have an NFS-shared source directory, all I have to do on a new machine is to activate and run "pip3 install -e ." and do the required apt-get installations to have something running. This is often easier and faster than installing the dependencies to have pip3 do a full build on the dependent packages.