Bld

Bld (pronouced /bɪld/ as build) is a project build helper. It is mainly aimed at complex project composed by modules with different languages.

A typical project example is a client/server project where the server is coded with one language (C++, Go, Python...) and the client in another (Java, Javascript...). Both modules uses their own build system that can rarely be the same. To build the whole project, you end by creating a lot of scripts that cover the main situations.

Bld can be used to avoid the creation of all those scripts. Just create a Python module for each project's module where you describe how to build it.

Installation

From source:

git clone https://github.com/osechet/bld
cd bld
python setup.py install

Usage

At the root of your project, create a projectfile.py file:

"""
Project definition.
"""

NAME = 'super-project'
VERSION = '0.1.0-dev'
MODULES = ['client', 'server']
BUILD_DIR = 'build'

Set the PROJECT_HOME environment variable to define the root directory of your project:

export PROJECT_HOME="/path/to/super-project"

Create a script for each project module in the ${PROJECT_HOME}/bld directory:

client.py:

"""
The client module.
"""

import os

def build(project, args):
    """
    Build the module.
    """
    # Aliases
    run = project.run

    module_dir = os.path.join(project.root_dir, 'client')
    with project.chdir(module_dir):
        with project.step('client:build', "Build"):
            run('echo "Building..."')
            run('sleep 2')

server.py:

"""
The server module.
"""

import os
import platform

def build(project, args):
    """
    Build the module.
    """
    # Aliases
    run = project.run

    module_dir = os.path.join(project.root_dir, 'server')
    with project.chdir(module_dir):
        with project.step('server:build', "Build"):
            run('echo "Building..."')
            run('sleep 3')

Call bld to build the whole project or bld <module> to build a specific module.

Reports

Bld automatically monitor the time execution of the build. The result is stored at the end of the build in the reports/time.csv file. The project's step() method can be used to monitor a specific block of code. The time report list all the executed steps by name but also the total build execution:

client:build,server:build,total
2.015258717990946,3.018017319991486,5.0884078509989195

Development

Note: It is advised to work inside a virtual environment. In this section, we'll work with venv.

Create the virtual environement:

python3 -m venv ./venv

Later to open the virtual environment:

. ./venv/bin/activate

Install requirements (once in virtual environment):

python -m pip install -r requirements.txt
python -m pip install -r requirements_dev.txt

Run the bld command:

./bldlib/bld.py -h

Unit tests

To run unit tests, call pytest. For code coverage, run pytest --cov=bldlib.

Tests

To install the package being developed, run pip install -e . from the project's root directory. You can then uninstall it with pip uninstall bld.

Publishing

rm -rf dist
python setup.py sdist
twine upload dist/*