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Update Catalyst requirement from 15 to 15, 16.0 in the all-julia-packages group across 1 directory#39

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Update Catalyst requirement from 15 to 15, 16.0 in the all-julia-packages group across 1 directory#39
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@dependabot dependabot bot commented on behalf of github Mar 9, 2026 •
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Updates the requirements on Catalyst to permit the latest version.
Updates Catalyst to 16.0.0

Release notes

Sourced from Catalyst's releases.

v16.0.0

Catalyst v16.0.0

Diff since v15.0.11

See HISTORY.md for breaking changes.

Merged pull requests:

... (truncated)

Changelog

Sourced from Catalyst's changelog.

Breaking updates and feature summaries across releases

Catalyst 16.0

Catalyst 16 is a major release that transitions from ModelingToolkit (MT) v9 to ModelingToolkitBase (the base for ModelingToolkit v11); introduces unified hybrid model support for mixed ODE/SDE/Jump systems; supports user-provided coupled ODEs, SDEs, jump processes, and jump-diffusions; and modernizes the conversion and problem-creation API.

Please also see the ModelingToolkit NEWS.md for all the changes that have occurred in ModelingToolkit as part of v10 and v11, and which are now relevant for Catalyst users.

BREAKING: ModelingToolkitBase replaces ModelingToolkit

  • Catalyst now depends on and re-exports ModelingToolkitBase instead of ModelingToolkit. This ensures Catalyst remains fully MIT-licensed after the library split that occurred in ModelingToolkit v11. ModelingToolkitBase provides the core symbolic system infrastructure (types, accessors, problem construction) that Catalyst needs. With this update, Catalyst moves from ModelingToolkit v9 to ModelingToolkitBase 1.12+ (part of ModelingToolkit v11).

    Most commonly used functions (unknowns, parameters, equations, @mtkcompile, etc.) are available through ModelingToolkitBase. However, if you relied on structural_simplify, now part of mtkcompile, for reducing models with algebraic equations, you may need to explicitly load ModelingToolkit to obtain equivalent levels of model reduction and optimization:

    using Catalyst
using ModelingToolkit  # only if you need MTK-specific features not in MTKBase

    The version of mtkcompile in ModelingToolkitBase is less feature filled than in ModelingToolkit, but please be aware that the latter version now loads AGPL-licensed libraries that may impose additional restrictions on your code.

BREAKING: Conversion functions renamed

  • convert(ODESystem, rs) is replaced by ode_model(rs).

  • convert(SDESystem, rs) is replaced by sde_model(rs).

  • convert(JumpSystem, rs) is replaced by jump_model(rs).

  • convert(NonlinearSystem, rs) is replaced by ss_ode_model(rs).

    The old Base.convert methods have been removed since ModelingToolkit now has one, unified, system type, System. The new functions accept the same keyword arguments as before.

    Before:

... (truncated)

Commits
  • bdc9eee Update Project.toml
  • f0c3752 Bump version from 16.0.0 to 16.0.1
  • 38be9ab Update Project.toml
  • 67ed483 Update project version to 16.0.0
  • d99b3cc Merge pull request #1432 from isaacsas/readme_updates
  • cbc199a ci: revert Test.yml and TestExtensions.yml to master
  • ba4b5d9 Merge pull request #1434 from isaacsas/worktree-debug-lts-bifurcation
  • 9366929 fix: use Symbolics.get_variables! in conslaw_species for Julia 1.10 compat
  • 2f9fc57 Apply suggestion from @​isaacsas
  • 2edd309 debug: fix broken import and add constantdefs diagnostics for LTS
  • Additional commits viewable in compare view

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@dependabot
Update Catalyst requirement 16.0
c38c2b0 
Updates the requirements on [Catalyst](https://github.com/SciML/Catalyst.jl) to permit the latest version.

Updates `Catalyst` to 16.0.0
- [Release notes](https://github.com/SciML/Catalyst.jl/releases)
- [Changelog](https://github.com/SciML/Catalyst.jl/blob/master/HISTORY.md)
- [Commits](SciML/Catalyst.jl@v15.0.0...v16.0.0)

---
updated-dependencies:
- dependency-name: Catalyst
  dependency-version: 16.0.0
  dependency-type: direct:production
  dependency-group: all-julia-packages
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot bot added dependencies Pull requests that update a dependency file julia Pull requests that update julia code labels Mar 9, 2026
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dependabot bot commented on behalf of github Mar 16, 2026

Dependabot tried to update this pull request, but something went wrong. We're looking into it, but in the meantime you can retry the update by commenting @dependabot recreate.

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dependabot bot commented on behalf of github Mar 17, 2026

Dependabot tried to update this pull request, but something went wrong. We're looking into it, but in the meantime you can retry the update by commenting @dependabot recreate.

@kaandocal
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kaandocal commented Mar 17, 2026

Catalyst v15 exports ModelingToolkit, but Catalyst v16 only relies on ModelingToolkitBase, which did not exist in prior versions. We can conditionally import ModelingToolkit or ModelingToolkitBase, but I am not sure how to deal with different dependencies depending on the Catalyst version.

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TorkelE commented Mar 17, 2026

I think old ModelingToolkit is now basically ModelingToolkitBase, with new ModelingToolkit now depending on some additional JuliaHub specific packages.

Long story, but I think for FiniteStateProjection you will likely want to switch to having ModelingToolkitBase as the only dependency, and remove ModelingToolkit from the dependencies.

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dependabot bot commented on behalf of github Mar 23, 2026

Superseded by #40.

@dependabot dependabot bot closed this Mar 23, 2026
@dependabot dependabot bot deleted the dependabot/julia/all-julia-packages-d0679da742 branch March 23, 2026 10:28
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