v2025.6.0

This release brings significant improvements to the QGIS plugin, allocation, and CLI latency. The QGIS plugin is now published in the QGIS plugin repository and has a simplified UI; you can drag a TOML to QGIS to open a model. The black screen in the iMOD plugin is fixed in the latest version of the iMOD plugin, and the Arrow errors on loading results are also fixed.

Iteratively working on a model in a Python session has become easier now that model.<node_type>.add can replace existing nodes, and run_ribasim(toml_path) shows you live progress in all editors.

Breaking changes: There are two changes that shouldn't be breaking but might affect some users nonetheless. The input_dir default has been changed to "input". Python models now forbid any extra values in schema validation for stricter data integrity.

Added

• Add run_ribasim(toml_path) convenience function. #2653
• Allow replacing nodes with add API. #2664
• Flow communication between primary and secondary networks. #2556
• Read NetCDF files with demand_priority. #2604
• Make reduction factor thresholds configurable. #2592 #2681
• QGIS: Add menu and dropdown interface. #2634
• Add docs on reloading model in QGIS plugin guide. #2583
• Document pandas requirement for QGIS plugin. #2642

Changed

• Set input_dir default to "input". #2641
• Python: Forbid any extra values in (base)model for stricter validation. #2595
• Support Scientific Python SPEC 0 for broader compatibility. #2630
• QGIS: Always use GDAL instead of pyarrow for better stability. #2591
• Publish QGIS plugin. #2654 #2658
• Improved build performance and compilation. #2652

Fixed

• Finalize progress bar. #2665
• Fix Junctions with subnetwork ID. #2633
• Delwaq: Restore correct water/mass balance with Junctions. #2607
• Delwaq: Limit endtime for partially failed Ribasim runs. #2637
• Delwaq: Improved performance of flow boundary concatenation. #2597
• Fix remaining DelWAQ netCDF warnings. #2621
• Fix DataInterpolations integration bug. #2576
• QGIS: Fix empty Arrow results. #2585
• Log clear error on decreasing area in S(h). #2600
• QGIS: Faster results drawing. #2618
• QGIS: Fix crash on Reload Ribasim model. #2661
• Reset ribasim_version in model_post_init. #2578
• Convert Path to str with .as_posix() for cross-platform compatibility. #2579
• Support pydantic 2.12. #2650

All changes

What's Changed

• Use threads in CI. by @evetion in #2574
• Fix DataInterpolations integration bug by @SouthEndMusic in #2576
• Convert path to str with .as_posix() by @visr in #2579
• Reset ribasim_version in model_post_init by @visr in #2578
• Add docs on reloading model in QGIS plugin guide by @visr in #2583
• Fix empty Arrow results by @visr in #2585
• Update typing in Ribasim Python by @visr in #2581
• Small interpolation improvements by @SouthEndMusic in #2589
• QGIS: Always use GDAL instead of pyarrow by @visr in #2591
• Switch to quarto-actions/publish by @visr in #2593
• [python] Forbid any extra values in (base)model by @evetion in #2595
• Use quarto-publish task by @visr in #2594
• [delwaq] Improved performance of flow boundary concatenation. by @evetion in #2597
• Bump prefix-dev/setup-pixi from 0.9.0 to 0.9.1 by @dependabot[bot] in #2601
• Log clear error on decreasing area in S(h) by @simulutions in #2600
• Update Julia manifest by @evetion in #2606
• Update pre-commit hooks by @evetion in #2609
• Update Julia manifest by @evetion in #2611
• Update pixi lockfile by @evetion in #2610
• Update pixi lockfile by @evetion in #2613
• Update pre-commit hooks by @evetion in #2612
• [QGIS] Faster results drawing. by @evetion in #2618
• Add edge_coordinates attributes to generate.py by @visr in #2619
• [delwaq] Restore correct water/mass balance with Junctions by @evetion in #2607
• [ci] Skip failing allocation test on Linux. by @evetion in #2620
• Read NetCDF files with demand_priority by @visr in #2604
• Fix remaining DelWAQ netCDF warnings by @visr in #2621
• Rebase PackageCompiler fork by @visr in #2622
• Order, order! by @evetion in #2625
• Revert skipping of Outlet allocation test. by @evetion in #2626
• Flow communication between primary and secondary networks by @SouthEndMusic in #2556
• Support Scientific Python SPEC 0 by @visr in #2630
• Set JULIA_CONDAPKG_BACKEND to Null by @visr in #2635
• [qgis] Add menu and dropdown. by @evetion in #2634
• [delwaq] Limit Delwaq endtime for partially failed Ribasim runs. by @evetion in #2637
• Bugfix: junctions with subnetwork ID by @simulutions in #2633
• Pass profile path for QGIS (plugins). by @evetion in #2640
• Use Julia 1.12, Pkg workspaces and JuliaC sans trimming by @visr in #2629
• [docs] Document pandas requirement for QGIS plugin. by @evetion in #2642
• Set input_dir default to "input" by @visr in #2641
• Try JULIA_CPU_TARGET native by @visr in #2644
• Go back to Julia 1.11 by @visr in #2649
• Try pydantic 2.12.2 by @visr in #2650
• Split test_offline_delwaq_coupling by @visr in #2651
• Bump prefix-dev/setup-pixi from 0.9.1 to 0.9.2 by @dependabot[bot] in #2655
• QGIS release worthy by @evetion in #2658
• Get QGIS plugin ready to publish by @visr in #2654
• Set QGIS plugin prefix by @visr in #2659
• Don't specialize on build, take 2 by @visr in #2652
• Remove scripts/ tests/ from QGIS zip by @visr in #2660
• Make is_layer_visible more robust by @visr in #2661
• Allow replacing nodes with add API by @visr in #2664
• Formulate in terms of flows, solve in terms of storages by @SouthEndMusic in #2624
• Add run_ribasim(toml_path) function by @visr in #2653
• Finalize progress bar by @visr in #2665
• Revert "Formulate in terms of flows, solve in terms of storages (#2624)" by @visr in #2667
• Bump actions/upload-artifact from 4 to 5 by @dependabot[bot] in #2668
• Improved testing for subnetwork communication by @simulutions in #2647
• [QGIS] Also visualize Area layers. by @evetion in #2673
• Update changelog for v2025.6.0 by @visr in #2676
• Use warnings for replacing node, add test by @visr in #2677
• Replace Set with OrderedSet by @visr in #2669
• Remove hardcoded or even magic constants. by @evetion in #2592
• Document and modify reduction factor thresholds by @visr in #2681
• Prepare release v2025.6.0 by @visr in #2680

Full Changelog: v2025.5.0...v2025.6.0