pinstall 1.9.2

Installer Tool for Python Programs

PINSTALL - Installer/Utility Tool for Python Programs

This is a simple "swiss-army" tool to facilitate installing Python programs on Linux systems. The following commands are presently implemented, each as an independent plugin.

The latest documentation and code is available at https://github.com/bulletmark/pinstall.

Usage

Type pinstall or pinstall -h to view the usage summary:

usage: pinstall [-h] {project,pyenv,service,status,venv} ...

Installer/utility tool for Python programs.

options:
  -h, --help            show this help message and exit

Commands:
  {project,pyenv,service,status,venv}
    project             Creates a bare-bones Python pyproject.toml file to
                        facilitate installation by pipx or pip.
    pyenv               Updates all pyenv python versions and creates links to
                        current major versions.
    service             Installs systemd services and corresponding timers.
    status              Reports systemctl status of services and timers
                        installed from the current directory.
    venv                Creates a Python virtual environment.

Type pinstall <command> -h to see specific help/usage for any individual command:

Command project

usage: pinstall project [-h] [-f REQUIREMENTS_FILE] [-o] [app]

Creates a bare-bones Python pyproject.toml file to facilitate
installation by pipx or pip.

Useful when you have an app.py and it's special package dependencies
specified in requirements.txt and want to install that app.py (as
command "app") using pipx or pip but don't have a pyproject.toml (or old
style setup.py). Run this command in the same directory as the files and
it will create a bare-bones ./pyproject.toml file. This will allow you
to install the app using `pipx install .`, or `pip install .` commands.

Your app.py must have a main() function to be called when the app is
run.

positional arguments:
  app                   app[.py] or app/ package to create pyproject.toml for.
                        If not specified then looks for a single .py file in
                        current directory.

options:
  -h, --help            show this help message and exit
  -f REQUIREMENTS_FILE, --requirements-file REQUIREMENTS_FILE
                        default="requirements.txt"
  -o, --overwrite       overwrite existing pyproject.toml file

Command pyenv

usage: pinstall pyenv [-h] [-l] [-p] [-m]

Updates all pyenv python versions and creates links to current major versions.

options:
  -h, --help            show this help message and exit
  -l, --list            just list latest versions, do not update or purge
  -p, --purge           just purge old versions if later is installed
  -m, --remove-major-symlinks
                        remove all symlinks to major versions

Command service

usage: pinstall service [-h] [-u] [-s] [-e] [-r] [units ...]

Installs systemd services and corresponding timers.

Substitutes template strings within each *.service file in the current
directory (and in any corresponding .timer file); installs the
substituted file[s] to the appropriate systemd system (or user) unit
configuration directory; then enables and starts the service (or the
timer).

Template strings can be any of the following:

    HOME      : Home directory path of the invoking user
    USER      : User name of invoking user
    USERID    : Numeric user ID of the invoking user
    GROUPID   : Numeric group ID of the invoking user
    WORKDIR   : Directory path of the service file
    PROGDIR   : Same as WORKDIR
    BASENAME  : Directory name of the service file
    PROG      : Stem name of the service file (i.e. "name" in "name.service")
    PROGTITLE : Upper case of PROG

Template strings are specified in .service and .timer files by wrapping
them in hash symbols. Installed copies of these source files have all
instances of template strings replaced by their value. E.g. #HOME#
gets replaced by the user's home directory path.

positional arguments:
  units            systemd service file[s]

options:
  -h, --help       show this help message and exit
  -u, --user       install as user service
  -s, --no-start   do not start service[s]
  -e, --no-enable  do not enable service[s]
  -r, --remove     just uninstall and remove service[s]

Command status

usage: pinstall status [-h] [-u] [units ...]

Reports systemctl status of services and timers installed from the
current directory.

positional arguments:
  units       systemd service file[s]

options:
  -h, --help  show this help message and exit
  -u, --user  report for user service

Command venv

usage: pinstall venv [-h] [-d DIR] [-p PYTHON | -P PYENV]
                        [-f REQUIREMENTS_FILE] [-r] [-u] [-i [PACKAGE ...]]
                        [-w] [-W] [-v]
                        [args ...]

Creates a Python virtual environment.

Runs `python -m venv` to create a venv (optionally for the specified
Python name, or path, or pyenv Python version); adds a .gitignore to it
to be automatically ignored by git; upgrades the venv with the latest
pip + setuptools + wheel; then installs all package dependencies from
1) requirements.txt if present, or 2) from pyproject.toml if present.

positional arguments:
  args                  optional arguments to python -m venv (add by starting
                        with "--"). See options in `python -m venv -h`

options:
  -h, --help            show this help message and exit
  -d DIR, --dir DIR     directory name to create, default="venv"
  -p PYTHON, --python PYTHON
                        python executable, default="python3"
  -P PYENV, --pyenv PYENV
                        pyenv python version to use, i.e. from `pyenv
                        versions`, e.g. "3.9".
  -f REQUIREMENTS_FILE, --requirements-file REQUIREMENTS_FILE
                        default="requirements.txt"
  -r, --no-require      don't pip install requirements/dependencies
  -u, --no-upgrade      don't upgrade pip/setuptools in venv
  -i [PACKAGE ...], --install [PACKAGE ...]
                        also install (1 or more) given packages
  -w, --without-pip     don't install pip or requirements in venv (i.e. pass
                        --without-pip to python -m venv)
  -W, --no-wheel        don't install wheel in venv
  -v, --verbose         verbose pip install (can add multiple times to
                        increase verbosity)

Command venv usage with pyenv

Pyenv is a popular tool to easily install and switch between multiple versions of Python. So for example, you can use pyenv + pinstall to easily test a Python program with an older or newer version than your system Python.

E.g. Install Python 3.7 and then create a virtual enviroment (in the current directory) using it:

$ pyenv install 3.7
$ pinstall pyenv
$ pinstall venv -P 3.7
$ venv/bin/python --version
Python 3.7.17

Note in this example that pyenv installed Python 3.7.17 because that was the latest 3.7 version available (at the time of writing).

Management of pyenv versions

Pyenv gives you the handy ability to install multiple versions of Python. However, there is no easy/quick way to update all those versions unless you update each manually. So pinstall offers a pyenv command to do this. Just run pinstall pyenv which will check your versions and update any which have a newer minor version. E.g. if you have 3.7.3 installed and 3.7.4 is available then pinstall pyenv will invoke pyenv to install 3.7.4. You can also run pinstall pyenv -p to automatically purge any older/superceded versions, i.e. to remove 3.7.3 in this example.

pinstall pyenv also does something else each time you run it. It creates or updates major version links. E.g. after installing 3.7.4 as in the above example, pinstall pyenv will also create a link in your pyenv versions directory 3.7 -> 3.7.4. This allows you to create a virtual environment in two ways:

1. pinstall venv -P 3.7.4 will create a virtual environment using 3.7.4 permanently, or:

2. pinstall venv -P 3.7 will create a virtual environment using the link 3.7 which initially points to 3.7.4 but will automatically use 3.7.5 when/if the minor version gets updated (i.e. after you have done a later pinstall pyenv to find and install a new 3.7.5).

Note if you don't use pinstall pyenv to update your pyenv versions and always only manage them via pyenv directly then pinstall venv -P 3.7 will still work but in this case pyenv simply dereferences 3.7 to 3.7.4 immediately to create the virtual enviroment, i.e. the same as if you typed pinstall venv -P 3.7.4 explicitly.

Installation

Arch Linux users can install pinstall from the AUR.

Python 3.6 or later is required and the sudo program must be installed (to use the service command).

Note pinstall is on PyPI so just ensure that pipx is installed then type the following:

$ pipx install pinstall

To upgrade:

$ pipx upgrade pinstall

License

Copyright (C) 2023 Mark Blakeney. This program is distributed under the terms of the GNU General Public License. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License at http://www.gnu.org/licenses/ for more details.