cpp2: mstch_cpp2 src/module.thrift
go: mstch_go src/module.thrift
hack: hack:hack_collections=1 src/module.thrift
py3: mstch_py3 src/module.thrift
py3_inplace: mstch_py3:inplace_migrate src/module.thrift
python: mstch_python src/module.thrift
