Simple SAT solvers for use in Enstaller
Prototype for SAT-based dependency handling. This is a work in progress, do not expect any API not to change at this point.
To install the python package, simple do as follows:
git clone --recursive https://github.com/enthought/sat-solver cd sat-solver pip install -e .
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:
Niklas Eén, Niklas Sörensson: An Extensible SAT-solver. SAT 2003
Lintao Zhang, Conor F. Madigan, Matthew H. Moskewicz, Sharad Malik: Efficient Conflict Driven Learning in a Boolean Satisfiability Solver. Proc. ICCAD 2001, pp. 279-285.
Donald Knuth: The art of computer programming. Vol. 4, Pre-fascicle 6A, Par. 220.127.116.11. (Satisfiability).
On the use of SAT solvers for managing packages:
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