v11.36.0

ModelingToolkit v11.36.0

Diff since v11.28.2

Merged pull requests:

• feat: [AI] allow passing an operating point to linearize using a solution (#4443) (@AayushSabharwal)
• Add the homotopy operator and HomotopyProblem construction (#4601) (@BatchZero)
• refactor: ensure init system is in terms of unknowns of DAE (#4631) (@AayushSabharwal)
• feat: add reversible transformation API (#4655) (@AayushSabharwal)
• feat: [AI] add isolate_subsystem (#4658) (@AayushSabharwal)
• refactor: update MTK to reversible transformations API (#4659) (@AayushSabharwal)
• build: restore accidentally removed sources entries (#4664) (@AayushSabharwal)
• build: bump MTKBase minor version (#4665) (@AayushSabharwal)
• Add analyze_initialization_jacobian — diagnose rank-deficient initialization (#4666) (@baggepinnen)
• build: bump MTK patch version (#4667) (@AayushSabharwal)
• refactor: store mm in TearingState (#4668) (@AayushSabharwal)
• Declare public API (unlock downstream ExplicitImports allow-lists) (#4669) (@ChrisRackauckas-Claude)
• As/bump version (#4673) (@AayushSabharwal)
• refactor: eliminate unnecessary maxiters warnings if missing_guess_value is not Error (#4674) (@AayushSabharwal)
• Release 1 subpackage(s) (#4676) (@ChrisRackauckas)
• Raise downgrade floors in ModelingToolkitBase (FunctionWrappers/ImplicitDiscreteSolve/OffsetArrays/BipartiteGraphs) (#4677) (@ChrisRackauckas-Claude)
• fix: fix bugs, improve type-stability (#4678) (@AayushSabharwal)
• Trajectory linearization: avoid per-timepoint recompilation; require op for loop-opening parameters (#4679) (@baggepinnen)
• Init test: accept NonlinearLeastSquaresProblem fallback for HydraulicSystem (#4681) (@singhharsh1708)
• fix: handle non-mtkcompile systems in full_equations initialization (#4682) (@AayushSabharwal)
• build_explicit_observed_function: remove unused dervals (#4683) (@KristofferC)
• reorder_parameters: avoid double lookup for identical key (haskey + getindex) and use get instead (#4684) (@KristofferC)
• cache parameters, namespacemap and reorder_parameters (#4685) (@KristofferC)
• build: bump MTKBase minor, MTK minor versions (#4686) (@AayushSabharwal)
• test: make tests less dependent on equation ordering (#4687) (@AayushSabharwal)
• Skip parameter args when rebuilding non-parameter array variables (#4689) (@KristofferC)
• use the cached reorder_parameters in a few more places (#4690) (@KristofferC)
• cache the concrete_getu call (#4691) (@KristofferC)
• compile one observed function for all CopyParamsByTemplate fallback batches (#4692) (@KristofferC)
• test: make inline linear SCC test more reliable (#4695) (@AayushSabharwal)
• Memoize split_indexed_var and get_stable_index (#4696) (@KristofferC)
• propagate the cached reorder_parameters to the SCC subsystems (#4697) (@KristofferC)
• Propagate ParameterArrayAssignments to SCC subsystems (#4698) (@KristofferC)
• As/bump version (#4699) (@AayushSabharwal)
• feat: set Initial(x) when setting x in LinearizationProblem (#4700) (@AayushSabharwal)
• [AI] Use declared inputs for input-aware codegen on compiled systems (#4702) (@SebastianM-C)
• feat: add necessary initial conditions API (#4703) (@AayushSabharwal)
• fix: properly eliminate identically zero variables in alias_elimination! (#4704) (@AayushSabharwal)
• avoid recompiling multiple instances ofbuild_function_wrapper in some cases (#4705) (@KristofferC)
• build: bump MTKBase minor, MTK minor versions (#4707) (@AayushSabharwal)
• Raise ModelingToolkitBase DiffEqBase 7.x floor to 7.4.2 (fix downgrade VectorContinuousCallback crash) (#4709) (@ChrisRackauckas-Claude)
• Raise ModelingToolkitBase JumpProcesses floor to 9.27.0 (fix downgrade SSAIntegrator crash) (#4710) (@ChrisRackauckas-Claude)
• fix nospecialize syntax in wrap_symbolic_linear_interface (#4713) (@KristofferC)
• refactor: use Symbolics.CodegenOptions, cleanup kwargs (#4718) (@AayushSabharwal)
• Bump version to 11.31.1 (#4719) (@ChrisRackauckas)
• ci: use targeted monorepo TagBot (#4722) (@ChrisRackauckas-Claude)
• analyze_initialization_jacobian: finite differences by default, ADTypes autodiff option (#4724) (@baggepinnen)
• Fix initialization inference test on Julia 1.11 (#4725) (@ChrisRackauckas-Claude)
• Fix homotopy lambda spell check (#4726) (@ChrisRackauckas-Claude)
• Run Runic on initialization diagnostics (#4727) (@ChrisRackauckas-Claude)
• Raise downgrade compat floors (#4728) (@ChrisRackauckas-Claude)
• Remove docs DiffEqDevTools dependency (#4729) (@ChrisRackauckas-Claude)
• Release prep: batched version bumps for 1 package (#4732) (@ChrisRackauckas)
• Release prep: bump ModelingToolkitBase to 1.51.1 (#4733) (@ChrisRackauckas)
• Fix ModelingToolkitBase julia compat floor: 1.9 -> 1.10 (#4734) (@ChrisRackauckas)
• Raise ModelingToolkitBase JumpProcesses floor to 9.28 (#4735) (@ChrisRackauckas-Claude)
• Raise ModelingToolkitBase OffsetArrays floor to 1.11 (#4736) (@ChrisRackauckas-Claude)
• Fix ModelingToolkitBase QA metadata (#4737) (@ChrisRackauckas-Claude)
• Fix ModelingToolkitBase Aqua unbound arguments (#4738) (@ChrisRackauckas-Claude)
• Raise ModelingToolkitBase SymbolicUtils floor to 4.35.3 (#4739) (@ChrisRackauckas-Claude)
• Fix root OffsetArrays downgrade floor (#4741) (@ChrisRackauckas-Claude)
• Allow current LinearSolve for downstream ControlSystemsMTK tests (#4742) (@ChrisRackauckas-Claude)
• fix: handle case in SCCNonlinearProblem when no guesses are provided (#4743) (@AayushSabharwal)
• Correct alias elimination docstring typo (#4745) (@ChrisRackauckas-Claude)
• Fix documentation examples for current dependency APIs (#4746) (@ChrisRackauckas-Claude)
• Resolve benchmark MTKBase before runner startup (#4747) (@ChrisRackauckas-Claude)
• Require BifurcationKit 0.8 in docs (#4748) (@ChrisRackauckas-Claude)
• fix: Const argument of operator is not considered a variable (#4750) (@AayushSabharwal)
• build: bump MTKBase minor, MTK minor, MTKBase compat, Symbolics compat (#4751) (@AayushSabharwal)
• feat: Introduce BuildFunctionWrapperOptions for build_function_wrapper (#4752) (@AayushSabharwal)
• fix: allow scalarizing instream_rt (#4753) (@AayushSabharwal)
• Add deepcopy_internal method for GeneratedFunctionWrappers (#4754) (@jClugstor)
• Fix workflow tag concurrency checks (#4755) (@ChrisRackauckas-Claude)
• build: bump MTKBase minor version (#4756) (@AayushSabharwal)
• refactor: Migrate build_function_wrapper callsites to BuildFunctionWrapperOptions (#4757) (@AayushSabharwal)
• Allow SciMLTesting v2.1 in QA envs (#4758) (@ChrisRackauckas-Claude)
• Fix stale downstream test groups (#4760) (@ChrisRackauckas-Claude)
• feat: Introduce GeneratedFunctionOptions for the code-generation entry points (#4762) (@AayushSabharwal)
• Allow DataInterpolations 9 in ModelingToolkit tests (#4763) (@ChrisRackauckas-Claude)
• refactor: defer scalarization in mtkcompile (#4765) (@AayushSabharwal)
• Route DAE/ODE initialization through the homotopy continuation solver (#4766) (@ChrisRackauckas-Claude)
• refactor: Introduce GeneratedFunctionOptions for the code-generation entry points (#4768) (@AayushSabharwal)
• build: bump MTKBase, MTK minor versions (#4769) (@AayushSabharwal)
• build: use accidentally skipped MTKBase minor version (#4770) (@AayushSabharwal)
• build: bump MTK minor version (#4771) (@AayushSabharwal)
• fix: handle variable discover of x[i] where i is a variable (#4772) (@AayushSabharwal)
• Raise JumpProcesses downgrade floor (#4773) (@ChrisRackauckas-Claude)
• build: bump MTKBase patch version (#4775) (@AayushSabharwal)
• fix: retain clock information after isolate_subsystem (#4777) (@AayushSabharwal)
• build: bump MTK patch version (#4779) (@AayushSabharwal)
• fix: allow parameter-only equations after mtkcompile (#4780) (@AayushSabharwal)
• refactor: various performance improvements (#4781) (@AayushSabharwal)
• fix: fix eliminate_perfect_aliases! when higher order dtarget doesn't exist (#4782) (@AayushSabharwal)
• feat: add set_defaults (#4783) (@AayushSabharwal)
• build: bump MTK minor version (#4785) (@AayushSabharwal)
• refactor: make MTK robust to inline_linear_sccs = true by default (#4786) (@AayushSabharwal)
• fix: avoid eliminating irreducibles in eliminate_zero_variables! (#4787) (@AayushSabharwal)
• Raise OptimizationOptimJL minimum to 0.4.14 (#4788) (@ChrisRackauckas-Claude)
• Drop Compat 3 support from ModelingToolkitBase (#4789) (@ChrisRackauckas-Claude)
• Drop ArrayInterface 6 support from ModelingToolkitBase (#4791) (@ChrisRackauckas-Claude)
• Drop Reexport 0.2 support (#4792) (@ChrisRackauckas-Claude)
• Drop stale DiffRules 0.1 compatibility (#4793) (@ChrisRackauckas-Claude)
• Drop stale NaNMath 0.3 compatibility (#4794) (@ChrisRackauckas-Claude)
• Drop UnPack 0.1 compatibility (#4795) (@ChrisRackauckas-Claude)
• Drop SpecialFunctions 1 compatibility (#4796) (@ChrisRackauckas-Claude)
• Drop unsupported DiffEqCallbacks 2 and 3 compat (#4797) (@ChrisRackauckas-Claude)
• Drop Setfield 0.x support (#4798) (@ChrisRackauckas-Claude)
• Bump ModelingToolkit and ModelingToolkitBase for release (#4799) (@ChrisRackauckas-Claude)
• refactor: simplify eliminate_zero_variables! (#4800) (@AayushSabharwal)
• Fix Runic indentation in parse_variable (#4801) (@ChrisRackauckas-Claude)
• refactor: bug fixes, pass GeneratedFunctionOptions to ObservedFunctionCache (#4802) (@AayushSabharwal)
• fix: retain DiffCache parameter info in SDE system simplification (#4803) (@AayushSabharwal)
• Change SampleTime to be like other Operators (#4806) (@kpamnany)
• Require SciMLTesting 2.4 (#4807) (@ChrisRackauckas-Claude)
• Lock SciCompDSL downgrade tests to in-repo sources (#4808) (@ChrisRackauckas-Claude)
• build: bump MTKBase minor, MTK patch (#4809) (@AayushSabharwal)
• Fix flattened array lookup in parse_variable (#4811) (@ChrisRackauckas-Claude)
• test: fix some more tests, mark some BVP tests as broken (#4812) (@AayushSabharwal)
• feat: add SciMLFunctionOptions (#4813) (@AayushSabharwal)
• Document public API coverage gaps (docs-only) (#4814) (@ChrisRackauckas-Claude)
• Make toparam and tobrownian public (#4815) (@oameye)
• refactor: change GeneratedFunctionWrapper type parameters (#4816) (@AayushSabharwal)
• Build a HomotopyProblem for a single-block homotopy init system (#4817) (@ChrisRackauckas-Claude)
• build: bump MTKBase minor, MTK minor, MTKBase compat (#4821) (@AayushSabharwal)

Closed issues:

• Linearize in point from ODESolution (#4159)
• Initialization test: HydraulicSystem returns NonlinearLeastSquaresProblem instead of SCCNonlinearProblem{LinearProblem} (#4680)
• linearize/get_sensitivity at a partial operating point on a DAE fails with OverrideInit instead of solving for the unspecified algebraic states (#4688)
• v11 regression for in plane multibody with rigid link (#4693)
• setsym/setu on a state of a LinearizationProblem silently no-ops; operating-point states must be set via Initial(state) (#4694)
• Equations with powers are broken (#4708)
• analyze_initialization_jacobian: first call dominated by Dual-specialized recompilation; finite differences are ~700x faster with identical rank result (#4723)
• no longer possible to keep a variable as an unknown if its derivative is 0 (#4764)
• @component-style modeling requires listing settable syms as kw args (#4767)
• mtkcompile regression in ModelingToolkitTearing ≥ 1.18: ExtraVariablesSystemException on prescribed positions with sensor-style derivative chains (compiles on 1.17.2); outcome also depends on variable name ordering (#4776)
• Optimization tests are corrupted by JuMP 1.31 objectid subexpression cache (#4810)