2025.2.1

This release backports various bug fixes from the main branch. Users are advised to upgrade.

What's Changed

• Backport bug fixes by @pbrubeck in #459 which includes:
  • Fix split for symmetric tensors (#448)
  • Fix for mixed dimension cells
  • Prevent ReferenceGradient(Zero) on CoefficientSplitter (#455)
  • Pullback: remove FunctionSpace (#452)
  • CoefficientSplitter: fix again ReferenceGrad(Zero) (#460)

Full Changelog: 2025.2.0.post0...2025.2.1

2025.2.0.post0

This post-release back ported some CI fixes that allowed the documentation to be built and pushed to https://docs.fenicsproject.org/ufl/2025.2.0/index.html

Users do not need to upgrade. This version will not be pushed to pypa as it is functionally identical to 2025.2.0.

Future versions of UFL will be tagged with v* to allow the CI to know when releases are being created.

Full Changelog: 2025.2.0...2025.2.0.post0

v2025.2.0

What's Changed

• Bump version. by @jhale in #376
• Bug fixes for BaseFormOperator by @pbrubeck in #370
• Fix BaseFormOperator.ufl_function_space by @pbrubeck in #377
• add DAGTraverser class and remove MultiFunctions in apply_derivatives() by @ksagiyam in #365
• fix kwarg name in extract_domains() and extract_unique_domain() : expand_mixed_mesh -> expand_mesh_sequence by @ksagiyam in #381
• Add CoefficientSplitter(DAGTraverser) class and apply_coefficient_split() function by @ksagiyam in #341
• mypy support by @schnellerhase in #356
• move test utilities out of ufl.finiteelement by @mscroggs in #364
• Fix autocomplete by @schnellerhase in #379
• Apply pyupgrade by @schnellerhase in #372
• Mypy fixes for upstream fenics projects by @schnellerhase in #383
• Enforce tests are passing without warnings by @schnellerhase in #384
• Fix bug in operator derivative reconstruction by @indiamai in #388
• Extend mypy testing to tests and demos by @schnellerhase in #390
• Raise if unused arguments are passed by @schnellerhase in #391
• Remove manpages by @schnellerhase in #393
• add integral domains by @mscroggs in #363
• Add return hatch for empty adjoint by @jorgensd in #392
• Python 3.14 (dev) support by @schnellerhase in #398
• Remove constraint on ReferenceGrad operand type by @schnellerhase in #400
• Update README.md for coveralls badge by @chrisrichardson in #403
• Update CI badges by @schnellerhase in #402
• Bump actions/checkout from 4 to 5 by @dependabot[bot] in #408
• Fix attr-defined mypy errors by @schnellerhase in #387
• Bump actions/download-artifact from 4 to 5 by @dependabot[bot] in #409
• Fix warning by @schnellerhase in #410
• Update pyproject license to new format by @chrisrichardson in #404
• Use extract unique domain by @jorgensd in #413
• Drop Python 3.9 support by @schnellerhase in #414
• Bump actions/setup-python from 5 to 6 by @dependabot[bot] in #417
• Simplify CI compilers by @garth-wells in #418
• Adapt to ruff 0.13.0 by @schnellerhase in #420
• Fix documentation errors by @schnellerhase in #421
• Spack CI updates by @garth-wells in #419
• Extend ufl.extract_blocks to preserving the initial arguments of an element with sub-spaces (mixed-element) by @jorgensd in #416
• Check Interpolate argument numbering by @leo-collins in #422
• Expose ufl.Label by @jorgensd in #423

New Contributors

• @indiamai made their first contribution in #388
• @leo-collins made their first contribution in #422

Full Changelog: 2025.1.0...2025.2.0

2025.1.0

This release of UFL was created to support an upcoming Firedrake release. DOLFINx 0.10.0 will likely be released against a future 2025.2.0 version of UFL.

What's Changed

• pypi trusted publishing by @jhale in #314
• Bump version number to 0.10.0 by @jhale in #315
• Add dependabot by @jhale in #316
• Add GitHub Token to coveralls step by @jhale in #319
• Bump actions/setup-python from 3 to 5 by @dependabot in #317
• Bump actions/checkout from 3 to 4 by @dependabot in #318
• Add HCurlDiv space and covariant-contravariant Piola mapping by @pbrubeck in #320
• Upload to coveralls and docs from CI job running against python 3.12 by @francesco-ballarin in #321
• Fix pullback for symmetric tensors with non-scalar subelements by @pbrubeck in #322
• Fix Piola pullbacks for VectorElement by @pbrubeck in #323
• Fix PhysicalPullback by @pbrubeck in #324
• FormSum: sort_domains by @pbrubeck in #325
• use main firedrake branches in tests by @mscroggs in #326
• Python 3.12 in tsfc CI workflow by @mscroggs in #328
• Fix action space check by @pbrubeck in #331
• remove apply_default_restrictions() by @ksagiyam in #329
• Action type check by @pbrubeck in #333
• Bump gcc to 12 and ubuntu at 24.04 by @jorgensd in #337
• Fix FormSum weights by @pbrubeck in #335
• Simplify indexed ListTensor objects by @pbrubeck in #336
• Indexed: avoid contraction of repeated indices by @pbrubeck in #338
• Simplify conditional by @pbrubeck in #340
• Bug fix for complex division of numpy.complex by @KarsKnook in #342
• Fix #343 by @mscroggs in #344
• no need to explitly run Symmetry - have removed xfail from ffc by @mscroggs in #347
• Fix BaseFormOperator.ufl_function_space by @pbrubeck in #348
• introduce MeshSequence class by @ksagiyam in #303
• Introduce ridge integrals by @jorgensd in #330
• Update TSFC workflow by @connorjward in #349
• Return ZeroBaseForm for zero derivative by @Ig-dolci in #355
• Extract lhs and rhs from MixedFunctionSpace by @jorgensd in #350
• Resolve #353 by @jorgensd in #354
• Add ufl.action for MixedFunctionSpace by @jorgensd in #351
• Extend adjoint action to work with mixed spaces by @jorgensd in #352
• ruff fix by @garth-wells in #358
• Fix missing domain kwarg in pullback by @pbrubeck in #361
• Fix replace_derivative_nodes by @pbrubeck in #360
• Remove component tensors by @pbrubeck in #339
• Changes to TSFC workflow to work with new Firedrake container by @connorjward in #359
• Update Python versions by @schnellerhase in #366
• apply_derivatives: tidy up things around BaseFormOperators by @ksagiyam in #368
• remove_compoment_tensors: fix performance regression by @pbrubeck in #367
• GateauxDerivativeRuleset return zero of the correct shape by @pbrubeck in #371
• Resolve #374 by @jorgensd in #375

New Contributors

• @dependabot made their first contribution in #317
• @KarsKnook made their first contribution in #342
• @schnellerhase made their first contribution in #366

Full Changelog: 2024.2.0...2025.1.0

2024.2.0

This is a major release of UFL and users are recommended to upgrade.

What's Changed

Features and API changes

• Fix extract block for tensor spaces by @jorgensd in #308
• Extend FormSplitter to handle restrictions by @jorgensd in #310
• Move grouping of integral from build_integral_data to group_form_integrals by @jorgensd in #305
• Remove broken/unused function by @jorgensd in #287

Other changes

• Updated to .md README by @jhale in #275
• Kebab case in build-wheels.yml by @jhale in #276
• Correct documentation links by @jhale in #277
• Remove unnecessary pip pinning by @garth-wells in #278
• Bump version. by @jhale in #279
• Add Windows CI step by @jhale in #281
• Clarify usage of pow and abs by @jorgensd in #286
• Handling of extract_blocks when part is equal to zero. by @jorgensd in #285
• Use extract_unique domain by @jorgensd in #291
• Fix argument-formatter. by @jorgensd in #288
• Remove unused definition to make ruff checks pass by @mscroggs in #299
• Use subdegree instead of superdegree to check cell bendy-ness by @connorjward in #295
• Relax assumption on BaseFormOperator's dual argument slot by @nbouziani in #283
• ConstantValue: Support general dtypes by @pbrubeck in #292
• Make cofunctionals terminal, and test by @dham in #300
• BaseForm: ensure that subclasses implement ufl_domains() by @pbrubeck in #302
• Move FiniteElement.components to FunctionSpace.components by @mscroggs in #307
• Fix pullback of double derivatives on Piola type elements by @jorgensd in #312

Full Changelog: 2024.1.0...2024.2.0

2024.1.0.post1

This release removes pip from the build-system requirements. It is otherwise functionally equivalent with 2024.1.0.

Full Changelog: 2024.1.0.post0...2024.1.0.post1

2024.1.0.post0

This release fixes a few small packaging issues. It is otherwise functionally equivalent with 2024.1.0.

Full Changelog: 2024.1.0...2024.1.0.post0

2024.1.0

What's Changed

• Bump version to 0.8.0.dev0 by @jhale in #217
• Add Spack test to Actions CI by @garth-wells in #218
• Add Spack test to CI by @garth-wells in #219
• AbstractFiniteElement by @mscroggs in #197
• Remove deprecated functionality (attach_operators_from_hash_data). by @jorgensd in #220
• Remove setup.cfg by @garth-wells in #223
• Fix coefficients optional kwarg when calling a Form by @mscroggs in #226
• topological_sorting: replace ineffective continue with break by @conpierce8 in #229
• Fix isort section in pyproject.toml by @francesco-ballarin in #231
• We do require pip>=22.3 for editable installs (PEP 660). by @jorgensd in #227
• Update wheel builder action. by @jhale in #230
• Typo in error message by @RemDelaporteMathurin in #233
• Remove ufl.legacy by @mscroggs in #224
• Change DOLFINx integration test image by @jhale in #235
• Update BaseForm's call by @nbouziani in #232
• ufl2unicode fail by @Ig-dolci in #237
• Convert rst to md by @mscroggs in #239
• use tsfc master on CI by @mscroggs in #240
• Update OMPI environment variables in FEniCSx integration test for openmpi v5 by @francesco-ballarin in #241
• Fix license file field. by @jhale in #244
• FormSum.coefficients should be ordered deterministically the same as Form.coefficients by @JHopeCollins in #243
• Expunge ufl_domain by @pbrubeck in #246
• Fix cofunction equality by @nbouziani in #247
• Bug-fix: do not call cell() in exterior_derivative by @pbrubeck in #248
• Drop [email protected] in favor of [email protected] by @francesco-ballarin in #250
• Bump actions/{download-artifact,upload-artifact} to v4 by @francesco-ballarin in #251
• Add Python 3.12 test coverage by @garth-wells in #253
• Github actions update by @garth-wells in #254
• Emmarothwell1/restricted function space by @dham in #252
• Remove geometric dimension from cell, move value_shape to FunctionSpace by @mscroggs in #249
• Reset FEniCSx CI branches by @mscroggs in #255
• Apply black formatting (using ruff) and the ruff linter by @garth-wells in #256
• Remove functions that were marked as to be removed after Dec 2023 by @garth-wells in #257
• Remove print statement by @jorgensd in #259
• remove print statement by @mscroggs in #258
• Fix zero simplification in BaseForm.add by @nbouziani in #262
• Fix extract_domains by @jpdean in #265
• Ruff fix by @mscroggs in #270
• Check ufl_signature by @Ig-dolci in #269

New Contributors

• @francesco-ballarin made their first contribution in #231
• @RemDelaporteMathurin made their first contribution in #233
• @Ig-dolci made their first contribution in #237
• @JHopeCollins made their first contribution in #243

Full Changelog: 2023.2.0...2024.1.0

2023.2.0

What's Changed

• Fix tag ref for CI by @chrisrichardson in #116
• Use Python warnings and exceptions instead of custom logging by @mscroggs in #137
• Handle form coefficients as an optional kwarg when calling a form by @pbrubeck in #125
• Use BaseArgument.eq in Argument by @michalhabera in #147
• Updates to avoid ufl_domain deprecation warnings by @garth-wells in #148
• fix TensorProductElement repr by @ksagiyam in #152
• Fix dev version number so pip doesn't report UFL as upgradable by @garth-wells in #153
• Bump min setuptools version and remove setup.py by @garth-wells in #154
• Replace pkg_resources with importlib.metadata and bump minimal Python version to 3.8 by @jorgensd in #158
• Fix typo in split by @nbouziani in #144
• fix str by @ksagiyam in #162
• Remove checks based on family name by @mscroggs in #161
• handle 0D integration in Ufl2unicode by @colinjcotter in #156
• Update UFL repository references by @albert-oliver in #165
• Refactor cells by @mscroggs in #168
• Reset FFCx branch by @mscroggs in #172
• Fix typo in definition of tetrahedron by @mscroggs in #173
• Remove type_extensions dependency by @garth-wells in #175
• Make FiniteElementBase subscriptable but not iterable by @conpierce8 in #180
• Delete unused code by @mscroggs in #163
• Ksagiyam/fix repr withmapping by @ksagiyam in #182
• Fix flake8 checks with new flake8 release by @mscroggs in #185
• Add Counted mixin class and refactor form signature computation by @connorjward in #178
• avoid error if Label not in renumbering by @mscroggs in #187
• Added 4d element types by @mscroggs in #188
• Fix issue #36 by @mrambausek in #37
• Add function determinant_expr_nxn by @lrtfm in #101
• Possible fix for taking scalar derivatives of vector coefficients using coefficient derivative maps by @cianwilson in #124
• Return correct Sobolev space for RestrictedElement by @pbrubeck in #128
• Implements the perp operator as a class by @tommbendall in #184
• Fix coefficients optional kwarg when calling a Form by @pbrubeck in #193
• Add trimmed serendipity to element list. by @dham in #195
• atan_2 changed to atan2 by @ignacia-fp in #196
• Group integrals with common integrand in IntegralData by @jorgensd in #92
• Update formatting by @mscroggs in #199
• reset branch name by @mscroggs in #200
• Some updates related to dualspace by @nbouziani in #194
• Deprecation messages for legacy features by @ignacia-fp in #201
• Add Interpolate and BaseFormOperator by @nbouziani in #205
• External operator dualspace by @nbouziani in #206
• Format docstrings by @mscroggs in #208
• Make tests pass flake8 checks by @mscroggs in #209
• Stop tests using deprecated initialisations by @mscroggs in #212
• Remove IrreducibleInt by @mscroggs in #213
• Reset Basix branch by @mscroggs in #215
• Update action differentiation by @nbouziani in #214
• convert Atan2 to atan2 not atan_2 by @dham in #216

New Contributors

• @nbouziani made their first contribution in #144
• @albert-oliver made their first contribution in #165
• @conpierce8 made their first contribution in #180
• @mrambausek made their first contribution in #37
• @cianwilson made their first contribution in #124
• @tommbendall made their first contribution in #184
• @ignacia-fp made their first contribution in #196

Full Changelog: 2023.1.1...2023.2.0

2023.1.1.post0

This release backports a fix e683148 for a major performance regression introduced in b9d3e97.

Fix version number.

All users of 2023.1.0 are recommended to update to this version.

Full Changelog: 2023.1.0...2023.1.1.post0