verchew 1.0

System dependency version checker.

…chews through your system dependencies, spitting out incompatible

versions.

Unix: Windows: Metrics: Usage:

Overview

Verchew is an embeddable Python script to check the versions of your project’s system dependencies. Its only external dependency is any Python interpreter, which should already be installed on macOS and most Linux-based operating systems.

Setup

Requirements

• Python 2.7+ or Python 3.3+

Installation

Install verchew with pip:

$ pip install verchew

or directly from the source code:

$ git clone https://github.com/jacebrowning/verchew.git
$ cd verchew
$ python setup.py install

or embedded the script in your project using this guide.

Usage

Create a configuration file (.verchew) with your project’s system dependencies:

[Working Program]

cli = working-program
version = 1.2.

[Newer Working Program]

cli = working-program
version =  4.

[Broken Program]

cli = broken-program
version = 1.2.3

[Missing Program]

cli = missing-program
version = 1.2.3

Run verchew to see if you have the right versions installed:

$ verchew

Checking for Working Program...

$ working-program --version
1.2.3
✔ MATCHED: 1.2.

Checking for Newer Working Program...

$ working-program --version
1.2.3
✘ EXPECTED: 4.

Checking for Broken Program...

$ broken-program --version
An error occurred.
✘ EXPECTED: 1.2.3

Checking for Missing Program...

$ missing-program --version
sh: command not found: missing-program
✘ EXPECTED: 1.2.3

Results: ✔ ✘ ✘ ✘

Revision History

1.0 (2017/01/09)

• Initial stable release.

0.5 (2016/11/02)

• Added --exit-code option to return non-zero exit codes on failure.

0.4 (2016/10/20)

• Added support for custom version arguments.

• Fixed handling of internal versions matches.

0.3 (2016/10/18)

• Added support for detecting missing and broken programs.

0.2.1 (2016/10/18)

• Now stripping whitespace after calling --version on a program.

0.2 (2016/10/17)

• Added --version command.

0.1 (2016/10/17)

• Initial release.