mesa-migrate-tool

Small utilities for migrating Mesa 2.x models to Mesa 3.x/4.x.

Tools included

1. patch_property_layer.py

Converts models using patch agents as state containers to use PropertyLayer instead.

python patch_property_layer.py path/to/your/model.py

2. patch_schedule.py

Converts RandomActivation / Activation schedulers to the new Schedule API.

3. patch_agent_init.py

Fixes the new Agent(model, ...) constructor pattern (removed unique_id parameter).

What it fixes

Mesa 2.x	Mesa 3.x/4.x
RandomActivation	Schedule
Agent(unique_id, model)	Agent(model, ...)
self.grid.get_neighbors(pos, moore=True)	same
self.all_cells	self.grid.all_cells
BatchRunner	model.batch_run()
self.dc	self.datacollector
mesa.visualization.ModularServer	SolaraViz

Credits

Created to help the Mesa community with issue #368 and #358.