SciMLBaseMeasurementsExt is broken in SciMLBase v2.116.0

[bclyons12]

Describe the bug 🐞

The new SciMLBaseMeasurementsExt extension has a bug in it, as it doesn't import SciMLBase but tries to implement a SciMLBase.promote_u0 function.

Expected behavior

Just need to import SciMLBase into the extension

Minimal Reproducible Example 👇

(@v1.11) pkg> activate --temp
  Activating new project at `/var/folders/nt/ct_lf2n94_1c21908mmbx55w0000gq/T/jl_lGXt74`

(jl_lGXt74) pkg> add SciMLBase Measurements
   Resolving package versions...
    Updating `/private/var/folders/nt/ct_lf2n94_1c21908mmbx55w0000gq/T/jl_lGXt74/Project.toml`
  [eff96d63] + Measurements v2.14.0
  [0bca4576] + SciMLBase v2.116.0
    Updating `/private/var/folders/nt/ct_lf2n94_1c21908mmbx55w0000gq/T/jl_lGXt74/Manifest.toml`
  [47edcb42] + ADTypes v1.17.0
  [7d9f7c33] + Accessors v0.1.42
  [79e6a3ab] + Adapt v4.3.0
  [4fba245c] + ArrayInterface v7.20.0
  [49dc2e85] + Calculus v0.5.2
  [38540f10] + CommonSolve v0.2.4
  [a33af91c] + CompositionsBase v0.1.2
  [187b0558] + ConstructionBase v1.6.0
  [ffbed154] + DocStringExtensions v0.9.5
  [4e289a0a] + EnumX v1.0.5
  [e2ba6199] + ExprTools v0.1.10
  [55351af7] + ExproniconLite v0.10.14
  [069b7b12] + FunctionWrappers v1.1.3
  [77dc65aa] + FunctionWrappersWrappers v0.1.3
  [46192b85] + GPUArraysCore v0.2.0
  [3587e190] + InverseFunctions v0.1.17
  [82899510] + IteratorInterfaceExtensions v1.0.0
  [ae98c720] + Jieko v0.2.1
  [1914dd2f] + MacroTools v0.5.16
  [eff96d63] + Measurements v2.14.0
  [2e0e35c7] + Moshi v0.3.7
  [d236fae5] + PreallocationTools v0.4.34
⌅ [aea7be01] + PrecompileTools v1.2.1
  [21216c6a] + Preferences v1.5.0
  [3cdcf5f2] + RecipesBase v1.3.4
  [731186ca] + RecursiveArrayTools v3.37.1
  [189a3867] + Reexport v1.2.2
  [ae029012] + Requires v1.3.1
  [7e49a35a] + RuntimeGeneratedFunctions v0.5.15
  [0bca4576] + SciMLBase v2.116.0
  [c0aeaf25] + SciMLOperators v1.7.1
  [53ae85a6] + SciMLStructures v1.7.0
  [1e83bf80] + StaticArraysCore v1.4.3
  [10745b16] + Statistics v1.11.1
  [2efcf032] + SymbolicIndexingInterface v0.3.43
  [56f22d72] + Artifacts v1.11.0
  [2a0f44e3] + Base64 v1.11.0
  [ade2ca70] + Dates v1.11.0
  [8ba89e20] + Distributed v1.11.0
  [8f399da3] + Libdl v1.11.0
  [37e2e46d] + LinearAlgebra v1.11.0
  [56ddb016] + Logging v1.11.0
  [d6f4376e] + Markdown v1.11.0
  [de0858da] + Printf v1.11.0
  [9a3f8284] + Random v1.11.0
  [ea8e919c] + SHA v0.7.0
  [9e88b42a] + Serialization v1.11.0
  [6462fe0b] + Sockets v1.11.0
  [fa267f1f] + TOML v1.0.3
  [cf7118a7] + UUIDs v1.11.0
  [4ec0a83e] + Unicode v1.11.0
  [e66e0078] + CompilerSupportLibraries_jll v1.1.1+0
  [4536629a] + OpenBLAS_jll v0.3.27+1
  [8e850b90] + libblastrampoline_jll v5.11.0+0
        Info Packages marked with ⌅ have new versions available but compatibility constraints restrict them from upgrading. To see why use `status --outdated -m`
Precompiling project...
  ✗ SciMLBase → SciMLBaseMeasurementsExt
  0 dependencies successfully precompiled in 1 seconds. 56 already precompiled.
  1 dependency errored.
  For a report of the errors see `julia> err`. To retry use `pkg> precompile`

Error & Stacktrace ⚠️

julia> err
PkgPrecompileError: The following 1 direct dependency failed to precompile:

SciMLBaseMeasurementsExt 

Failed to precompile SciMLBaseMeasurementsExt [dfeb527c-5d72-5266-8757-c98b46e34724] to "/Users/lyons/.julia/compiled/v1.11/SciMLBaseMeasurementsExt/jl_AHbSdu".
ERROR: LoadError: UndefVarError: `SciMLBase` not defined in `SciMLBaseMeasurementsExt`
Stacktrace:
 [1] top-level scope
   @ ~/.julia/packages/SciMLBase/h5MY3/ext/SciMLBaseMeasurementsExt.jl:6
 [2] include
   @ ./Base.jl:562 [inlined]
 [3] include_package_for_output(pkg::Base.PkgId, input::String, depot_path::Vector{String}, dl_load_path::Vector{String}, load_path::Vector{String}, concrete_deps::Vector{Pair{Base.PkgId, UInt128}}, source::Nothing)
   @ Base ./loading.jl:2881
 [4] top-level scope
   @ stdin:6
in expression starting at /Users/lyons/.julia/packages/SciMLBase/h5MY3/ext/SciMLBaseMeasurementsExt.jl:1
in expression starting at stdin:

Environment (please complete the following information):

• Output of using Pkg; Pkg.status()

Status `/private/var/folders/nt/ct_lf2n94_1c21908mmbx55w0000gq/T/jl_ju57GD/Project.toml`
  [eff96d63] Measurements v2.14.0
  [0bca4576] SciMLBase v2.116.0

• Output of using Pkg; Pkg.status(; mode = PKGMODE_MANIFEST)

Status `/private/var/folders/nt/ct_lf2n94_1c21908mmbx55w0000gq/T/jl_ju57GD/Manifest.toml`
  [47edcb42] ADTypes v1.17.0
  [7d9f7c33] Accessors v0.1.42
  [79e6a3ab] Adapt v4.3.0
  [4fba245c] ArrayInterface v7.20.0
  [49dc2e85] Calculus v0.5.2
  [38540f10] CommonSolve v0.2.4
  [a33af91c] CompositionsBase v0.1.2
  [187b0558] ConstructionBase v1.6.0
  [ffbed154] DocStringExtensions v0.9.5
  [4e289a0a] EnumX v1.0.5
  [e2ba6199] ExprTools v0.1.10
  [55351af7] ExproniconLite v0.10.14
  [069b7b12] FunctionWrappers v1.1.3
  [77dc65aa] FunctionWrappersWrappers v0.1.3
  [46192b85] GPUArraysCore v0.2.0
  [3587e190] InverseFunctions v0.1.17
  [82899510] IteratorInterfaceExtensions v1.0.0
  [ae98c720] Jieko v0.2.1
  [1914dd2f] MacroTools v0.5.16
  [eff96d63] Measurements v2.14.0
  [2e0e35c7] Moshi v0.3.7
  [d236fae5] PreallocationTools v0.4.34
⌅ [aea7be01] PrecompileTools v1.2.1
  [21216c6a] Preferences v1.5.0
  [3cdcf5f2] RecipesBase v1.3.4
  [731186ca] RecursiveArrayTools v3.37.1
  [189a3867] Reexport v1.2.2
  [ae029012] Requires v1.3.1
  [7e49a35a] RuntimeGeneratedFunctions v0.5.15
  [0bca4576] SciMLBase v2.116.0
  [c0aeaf25] SciMLOperators v1.7.1
  [53ae85a6] SciMLStructures v1.7.0
  [1e83bf80] StaticArraysCore v1.4.3
  [10745b16] Statistics v1.11.1
  [2efcf032] SymbolicIndexingInterface v0.3.43
  [56f22d72] Artifacts v1.11.0
  [2a0f44e3] Base64 v1.11.0
  [ade2ca70] Dates v1.11.0
  [8ba89e20] Distributed v1.11.0
  [8f399da3] Libdl v1.11.0
  [37e2e46d] LinearAlgebra v1.11.0
  [56ddb016] Logging v1.11.0
  [d6f4376e] Markdown v1.11.0
  [de0858da] Printf v1.11.0
  [9a3f8284] Random v1.11.0
  [ea8e919c] SHA v0.7.0
  [9e88b42a] Serialization v1.11.0
  [6462fe0b] Sockets v1.11.0
  [fa267f1f] TOML v1.0.3
  [cf7118a7] UUIDs v1.11.0
  [4ec0a83e] Unicode v1.11.0
  [e66e0078] CompilerSupportLibraries_jll v1.1.1+0
  [4536629a] OpenBLAS_jll v0.3.27+1
  [8e850b90] libblastrampoline_jll v5.11.0+0
Info Packages marked with ⌅ have new versions available but compatibility constraints restrict them from upgrading. To see why use `status --outdated -m`

• Output of versioninfo()

Julia Version 1.11.6
Commit 9615af0f269 (2025-07-09 12:58 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: macOS (arm64-apple-darwin24.0.0)
  CPU: 12 × Apple M4 Pro
  WORD_SIZE: 64
  LLVM: libLLVM-16.0.6 (ORCJIT, apple-m1)
Threads: 8 default, 0 interactive, 4 GC (on 8 virtual cores)
Environment:
  JULIA_NUM_THREADS = auto
  JULIA_EDITOR = code
  JULIA_VSCODE_REPL = 1

Additional context

Add any other context about the problem here.

[bclyons12]

@ChrisRackauckas @jClugstor

[ChrisRackauckas]

@jClugstor there seems to not be a lot of downstream testing on your end...

[jClugstor]

I normally do a lot of local testing, but in this case the issue was downstream of a downstream and I was overconfident the problem was fixed so I was relying on CI, which didn't catch this. Probably many of these tests involving the utilities that were moved over to SciMLBase should also be moved over for more reliable testing.

But yeah with #1126 I ran it locally and can confirm that those OrdinaryDiffEq tests pass.

And if you're talking about the SciMLJacobianOperators stuff, well CI would have caught that if it was able to finish running ;-)