What’s new

Next release

Change the node name in R12.yaml from R12_CPA to R12_RCPA (PR #49).
Register “message local data” ixmp configuration file setting and use to set the Context.local_path when provided. See (3) Other, system-specific (“local”) directories (PR #47)

New Spec class for easier handling of specifications of model (or model variant) structure (PR #39)
New utility function util.local_data_path() (PR #39).
repr() of Context no longer prints a (potentially very long) list of all keys and settings (PR #39).
as_codes() accepts a dict with Code values (PR #39).

Migrate utilities cached(), check_support(), convert_units(), maybe_query(), series_of_pint_quantity() (PR #27)
Add testing.NIE.
Add the --jvmargs option to pytest (see pytest_addoption()).
Remove Context.get_config_file(), get_path(), load_config(), and units(), all deprecated since 2021-02-28.

Add identify_nodes(), a function for identifying a Node code lists based on a Scenario (PR #24).
Add adapt_R11_R14(), a function for adapting data from the 11-region aggregation (R11) to the 14-region aggregation (R14) node lists (PR #24).
Add export_test_data() and mix-models export-test-data command (PR #16). See Prepare data for testing.
Allow use of pytest’s persistent cache across test sessions (PR #23). See Reproducibility.
Add the 12-region aggregation (R12) node code list (PR #14).

Add model.disutility, code for setting up structure and data for generalized consumer disutility (PR #13)

Migrate model.bare, model.build, model.cli, and associated documentation (PR #9)
Migrate utilities: ScenarioInfo, add_par_data(), eval_anno(), iter_parameters(), and strip_par_data().

Migrate util.click, util.logging; expand documentation (PR #8:).
Context.clone_to_dest() method replaces clone_to_dest() function.
Build PDF documentation on ReadTheDocs.
Allow CLI commands from both message_ix_models and message_data via mix-models.
Migrate mix-models techs CLI command.

Migrate Context class and testing module from message_data (PR #5:).
Add load_private_data(), package_data_path(), private_data_path().
Document: Data, metadata, and configuration and Command-line interface.
Update node codelists to ensure they contain both current and former ISO 3166 codes for countries that have changed status (PR #6:). For instance, ANT dissolved into BES, CUW, and SXM in 2010; all four are included in R11_LAM so this list can be used to handle data from either before or after 2010.

Initial release.