2026.1.0

This release of UFL was created to support the DOLFINx/FFC/Basix 0.11.0 release. The Changelog below was generated against the last DOLFINx-related release, 2025.2.0, rather than the last Firedrake-related release 2025.3.0.

What's Changed with respect to 2025.2.0

• Handle restrictions on MeshSequence by @ksagiyam in #264
• Switch to released Python 3.14 by @schnellerhase in #428
• Fix docstring typo by @connorjward in #430
• Bump to dev0 version by @jorgensd in #433
• Try splitting python-app workflow into separable steps by @jorgensd in #434
• Tweaks to new CI. by @jhale in #435
• Another attempt to get SSH push working by @jhale in #436
• Inherit SHA from workflow caller by @jhale in #437
• Switch to pydata_sphinx_theme and improve documentation (reduce number of warnings) by @jorgensd in #438
• Change AbstractCell members to properties by @schnellerhase in #385
• Restore dolfinx CI by @jorgensd in #440
• Change to dev-main firedrake container for TSFC testing by @schnellerhase in #441
• Bump actions/upload-artifact from 4 to 5 by @dependabot[bot] in #442
• Bump actions/download-artifact from 5 to 6 by @dependabot[bot] in #443
• Fix: string formatting by @schnellerhase in #444
• Introduce CellSequence by @ksagiyam in #429
• Fix composition of interpolate forms by @leo-collins in #425
• Bump actions/checkout from 5 to 6 by @dependabot[bot] in #446
• Fix action interpolate simplification by @leo-collins in #447
• Bump actions/download-artifact from 6 to 7 by @dependabot[bot] in #453
• Bump actions/upload-artifact from 5 to 6 by @dependabot[bot] in #454
• Fix split(SymmetricTensor) by @pbrubeck in #448
• BUG: prevent ReferenceGradient(Zero) on CoefficientSplitter by @pbrubeck in #455
• Pullback: remove FunctionSpace by @pbrubeck in #452
• Fix float eq. checks by @schnellerhase in #458
• CoefficientSplitter: fix again ReferenceGrad(Zero) by @pbrubeck in #460
• SobolevSpace: add H1Curl, H1Div, and H3 by @pbrubeck in #463
• Use pytest.raises rather than self-coded assert raise by @jorgensd in #465
• Bump actions/download-artifact from 7 to 8 by @dependabot[bot] in #467
• Bump actions/upload-artifact from 6 to 7 by @dependabot[bot] in #466
• Update compute_form_data and FormData to use a proper class and remove cell and facet average from balance modifiers. by @jorgensd in #469
• Fix CellEdgeVectors by @pbrubeck in #471
• Extend shape derivative to complex mode by @jorgensd in #462
• Extract_type of specific baseform operator by @jorgensd in #474
• Add missing f to f-string in ufl2unicode by @connorjward in #475
• Replace import * with import H1 by @mscroggs in #480
• Mypy fixes by @jorgensd in #484
• Enhance Measure.call by @pbrubeck in #483
• Drop Python 3.10 support by @jhale in #485

Full Changelog: 2025.2.1...2026.1.0