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Raise SciMLBase floor from 3.1 to 3.40 - #165

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ChrisRackauckas merged 1 commit into
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ChrisRackauckas-Claude:compat-scimlbase-3.40
Aug 15, 2026
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Raise SciMLBase floor from 3.1 to 3.40#165
ChrisRackauckas merged 1 commit into
SciML:mainfrom
ChrisRackauckas-Claude:compat-scimlbase-3.40

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Please ignore this PR until it has been reviewed by @ChrisRackauckas.

Raise SciMLBase floor from 3.1 to 3.40.

HighDimPDE declares SciMLBase = "3.1" and SciMLSensitivity = "7.116.1". SciMLSensitivity 7.116.1+ requires SciMLBase 3.40.0–3 (["7.116.1 - 7"] SciMLBase = "3.40.0 - 3"). Pinning the declared 3.1.0 floor (or the EnsembleAnalysis 3.4.2 floor) is unsatisfiable.

Fail before

Pkg.develop live HighDimPDE + pin (Julia 1.10.11, isolated depot):

SciMLBase 3.1.0: FAIL unsat — SciMLSensitivity 7.116.1–7 requires SciMLBase ≥ 3.40.0
SciMLBase 3.4.2: FAIL unsat — same SciMLSensitivity bound

Pass after

Same graph + pin SciMLBase 3.40.0:

RESOLVE_OK
LOAD_OK SciMLBase

First working registered version is 3.40.0 because that is the first SciMLBase allowed by SciMLSensitivity 7.116.1. Default-branch Downgrade is green because the resolver can pick SciMLBase ≥ 3.40.

SciMLSensitivity 7.116.1 was raised in #164; this leftover hole is the SciMLBase floor that PR did not touch.

Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>
@ChrisRackauckas
ChrisRackauckas marked this pull request as ready for review August 15, 2026 16:19
@ChrisRackauckas
ChrisRackauckas merged commit 55c3f2c into SciML:main Aug 15, 2026
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