Bump Mooncake compat lower bound to 0.5.25#353
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ChrisRackauckas merged 1 commit intoApr 11, 2026
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v0.15.35 added `Mooncake.friendly_tangent_cache(x::ComponentArray)` to `ext/ComponentArraysMooncakeExt.jl` (commit 29ddd04 "Add friendly_tangent_cache function to Mooncake"), but the Mooncake compat floor was left at `"0.5"`. `Mooncake.friendly_tangent_cache` / `Mooncake.FriendlyTangentCache` were only introduced in Mooncake 0.5.25 — on 0.5.24 and earlier the extension fails to precompile with `UndefVarError: friendly_tangent_cache not defined in Mooncake` whenever the resolver happens to pick a pre-0.5.25 Mooncake, which has been blocking downstream CI across SciMLSensitivity.jl and other Mooncake consumers. Pin the floor to 0.5.25 so the resolver is forced to pick a Mooncake that has the symbols this extension now references, and bump the package version 0.15.35 → 0.15.36. Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>
ChrisRackauckas-Claude
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to ChrisRackauckas-Claude/General
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Apr 11, 2026
`ext/ComponentArraysMooncakeExt.jl` started referencing
`Mooncake.friendly_tangent_cache(x::ComponentArray)` in commit 29ddd04
"Add friendly_tangent_cache function to Mooncake" (before the 0.15.34
tag). `Mooncake.friendly_tangent_cache` / `Mooncake.FriendlyTangentCache`
were only introduced in Mooncake 0.5.25, so on Mooncake 0.5.24 and
earlier `ComponentArraysMooncakeExt` fails to precompile with:
UndefVarError: `friendly_tangent_cache` not defined in `Mooncake`
but WeakCompat.toml still permits Mooncake "0.5" for 0.15.33 and later.
This has been blocking every Mooncake-loading test job in downstream
SciML packages (e.g. SciMLSensitivity.jl PR JuliaRegistries#1421) whenever the resolver
picks a pre-0.5.25 Mooncake.
0.15.33 does *not* reference friendly_tangent_cache (verified against
the released tree SHA), so this PR splits the existing range:
- 0.15.33 -> Mooncake = "0.5" (unchanged)
- 0.15.34 – 0.15.35+ -> Mooncake = "0.5.25"
A matching floor bump on the package side is in
SciML/ComponentArrays.jl#353 so future releases carry the tightened
bound directly.
Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>
ChrisRackauckas-Claude
pushed a commit
to ChrisRackauckas-Claude/General
that referenced
this pull request
Apr 11, 2026
`ext/ComponentArraysMooncakeExt.jl` started referencing
`Mooncake.friendly_tangent_cache(x::ComponentArray)` in commit 29ddd04
"Add friendly_tangent_cache function to Mooncake" (before the 0.15.34
tag). `Mooncake.friendly_tangent_cache` / `Mooncake.FriendlyTangentCache`
were only introduced in Mooncake 0.5.25, so on Mooncake 0.5.24 and
earlier `ComponentArraysMooncakeExt` fails to precompile with:
UndefVarError: `friendly_tangent_cache` not defined in `Mooncake`
but WeakCompat.toml still permits Mooncake "0.5" for 0.15.33 and later.
This has been blocking every Mooncake-loading test job in downstream
SciML packages (e.g. SciMLSensitivity.jl PR JuliaRegistries#1421) whenever the resolver
picks a pre-0.5.25 Mooncake.
0.15.33 does *not* reference friendly_tangent_cache (verified against
the released tree SHA), so this PR splits the existing range:
- 0.15.33 -> Mooncake = "0.5" (unchanged)
- 0.15.34 – 0.15.35+ -> Mooncake = "0.5.25"
A matching floor bump on the package side is in
SciML/ComponentArrays.jl#353 so future releases carry the tightened
bound directly.
Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>
DilumAluthge
pushed a commit
to JuliaRegistries/General
that referenced
this pull request
Apr 12, 2026
`ext/ComponentArraysMooncakeExt.jl` started referencing
`Mooncake.friendly_tangent_cache(x::ComponentArray)` in commit 29ddd04
"Add friendly_tangent_cache function to Mooncake" (before the 0.15.34
tag). `Mooncake.friendly_tangent_cache` / `Mooncake.FriendlyTangentCache`
were only introduced in Mooncake 0.5.25, so on Mooncake 0.5.24 and
earlier `ComponentArraysMooncakeExt` fails to precompile with:
UndefVarError: `friendly_tangent_cache` not defined in `Mooncake`
but WeakCompat.toml still permits Mooncake "0.5" for 0.15.33 and later.
This has been blocking every Mooncake-loading test job in downstream
SciML packages (e.g. SciMLSensitivity.jl PR #1421) whenever the resolver
picks a pre-0.5.25 Mooncake.
0.15.33 does *not* reference friendly_tangent_cache (verified against
the released tree SHA), so this PR splits the existing range:
- 0.15.33 -> Mooncake = "0.5" (unchanged)
- 0.15.34 – 0.15.35+ -> Mooncake = "0.5.25"
A matching floor bump on the package side is in
SciML/ComponentArrays.jl#353 so future releases carry the tightened
bound directly.
Co-authored-by: ChrisRackauckas-Claude <accounts@chrisrackauckas.com>
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Summary
v0.15.35 added
Mooncake.friendly_tangent_cache(x::ComponentArray)toext/ComponentArraysMooncakeExt.jl(commit 29ddd04 — "Add friendly_tangent_cache function to Mooncake"), but the Mooncake compat floor was left at\"0.5\". `Mooncake.friendly_tangent_cache` / `Mooncake.FriendlyTangentCache` were only introduced in Mooncake 0.5.25 — on 0.5.24 and earlier the extension fails to precompile with:```
ERROR: LoadError: UndefVarError: `friendly_tangent_cache` not defined in `Mooncake`
Failed to precompile ComponentArraysMooncakeExt
```
This has been blocking downstream CI across SciMLSensitivity.jl and other Mooncake consumers whenever the resolver happens to pick a pre-0.5.25 Mooncake — every test job fails at the precompile step before the package under test even loads.
Change
Verification
```
$ grep -l friendly_tangent_cache ~/.julia/packages/Mooncake/*/src -r | xargs -I{} dirname {} | xargs -I{} grep 'version ' {}/../Project.toml
version = "0.5.25"
version = "0.5.26"
```
(0.5.24 and older Mooncakes in `~/.julia/packages/Mooncake/` do not define the symbol.)
Test plan
Co-Authored-By: Chris Rackauckas accounts@chrisrackauckas.com