v2026.1.2

This release brings several improvements to the QGIS plugin, most notably the ability to compare observed and simulated timeseries using Observation nodes.

Added

• QGIS: Compare observed and simulated timeseries for Observation nodes in the plot widget. #3115
• Python: Add model.update_used_ids() to refresh node and link ID counters after direct edits. #3099
• Python: Make NodeData hashable, so nodes can be used in sets and as dictionary keys. #3094
• QGIS guide: Add sections on spatial results and topology. #3104

Changed

• QGIS: Plot and guide improvements, including plotting flow rates on non-Basin nodes and unified legend labels. #3102
• Delwaq: Drop required graph and substance state variables, so generate and parse can be run independently. #3110
• Update to OrdinaryDiffEq v7. #3082

Fixed

• Delwaq: Allow for isolated Basin nodes. #3088

Removed

• The deprecated Ribasim core Windows installation script; use the installer or ZIP archive instead. #3116

All changes

What's Changed

• Update Manifest.toml / OrdinaryDiffEq v7 by @visr in #3082
• Update to pyrefly v1, ignore bad-override by @visr in #3087
• Bump codecov/codecov-action from 6.0.0 to 6.0.1 in the all-actions group by @dependabot[bot] in #3085
• QGIS test return code improvements by @visr in #3090
• Update JuliaC, PythonCall and JuliaCall by @visr in #3091
• [delwaq] Allow for isolated basin nodes. by @evetion in #3088
• Hash NodeData by its ID by @visr in #3094
• Add Trivy security scan workflow by @evetion in #3097
• Bump the all-actions group across 1 directory with 2 updates by @dependabot[bot] in #3098
• Update pixi lockfile by @evetion in #3096
• Add model.update_used_ids() by @visr in #3099
• Bump the all-actions group with 2 updates by @dependabot[bot] in #3101
• QGIS plot and guide improvements by @visr in #3102
• QGIS guide: add spatial results and topology by @visr in #3104
• Use QGIS DevTools debugging and add QGIS Pytest plugin by @deltamarnix in #3106
• Simplify NodeType.T(s::Symbol) by @visr in #3109
• Fix newlines in docs' run_ribasim output by @visr in #3112
• [delwaq] Drop required graph and substance state variables by @evetion in #3110
• Add Observation support to QGIS plot widget by @visr in #3115
• Prepare release v2026.1.2 by @visr in #3116

Full Changelog: v2026.1.1...v2026.1.2