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Simple SAT solvers for use in Enstaller

Project description

Prototype for SAT-based dependency handling. This is a work in progress, do not expect any API not to change at this point.

Installation

To install the python package, simple do as follows:

git clone --recursive https://github.com/enthought/sat-solver
cd sat-solver
pip install -e .

Example usage

TODO

Usage from the CLI

To try things out from the CLI, you need to write a scenario file (yaml format), see simplesat/tests/simple_numpy.yaml for a simple example.

To print the rules:

python scripts/print_rules.py simplesat/tests/simple_numpy.yaml

To print the operations:

python scripts/solve.py simplesat/tests/simple_numpy.yaml

Comparing with php’s composer

First, clone composer’s somewhere on your machine:

git clone https://github.com/composer/composer

Then, use the scripts/scenario_to_php.py script to write a php file that will print the composer’s solution for a given scenario:

python scripts/scenario_to_php.py \
    --composer-root <path to composer github checkout> \
    simplesat/tests/simple_numpy.yaml \
    scripts/print_operations.php.in

This will create a scripts/print_operations.php script you can simply execute w/ php:

php scripts/print_operations.php

Bibliography

On the use of SAT solvers for managing packages:

Project details


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