Bump minimum Julia version to 1.10.8 (?)

[penelopeysm]

This PR attempts to fix the CI crash observed on 1.10.0. The current knowledge is:

• With [email protected] [email protected], the Julia runtime crashes and CI fails. https://github.com/TuringLang/DynamicPPL.jl/actions/runs/16165535432/job/45626465478

• With [email protected] [email protected], the Julia runtime still spits out those errors, but CI doesn't fail. https://github.com/TuringLang/DynamicPPL.jl/actions/runs/16168303557/job/45635313517?pr=979

• With [email protected] [email protected], the Julia runtime doesn't error and tests pass fine: https://github.com/TuringLang/DynamicPPL.jl/actions/runs/16168884937/job/45637230293?pr=979

  • I bisected this locally and 1.10.8 is the earliest Julia patch that makes this work.

Note that the runtime crash seems very similar to this one TuringLang/Bijectors.jl#368.

In that PR, the agreed-upon solution was to increase Julia compat to 1.10.8, so I've done the same here. It's not a perfect solution by any means but IMO it's the least bad option.

I have zero clue which part of Julia 1.10.8 fixed it, although this seems like the most likely one to me JuliaLang/julia@964fdf0

[github-actions]

Benchmark Report for Commit 07b672b

Computer Information

Julia Version 1.11.5
Commit 760b2e5b739 (2025-04-14 06:53 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 4 × AMD EPYC 7763 64-Core Processor
  WORD_SIZE: 64
  LLVM: libLLVM-16.0.6 (ORCJIT, znver3)
Threads: 1 default, 0 interactive, 1 GC (on 4 virtual cores)

Benchmark Results

|                 Model | Dimension |  AD Backend |      VarInfo Type | Linked | Eval Time / Ref Time | AD Time / Eval Time |
|-----------------------|-----------|-------------|-------------------|--------|----------------------|---------------------|
| Simple assume observe |         1 | forwarddiff |             typed |  false |                 10.5 |                 1.4 |
|           Smorgasbord |       201 | forwarddiff |             typed |  false |                752.1 |                35.7 |
|           Smorgasbord |       201 | forwarddiff | simple_namedtuple |   true |                305.5 |                69.0 |
|           Smorgasbord |       201 | forwarddiff |           untyped |   true |               1271.4 |                26.8 |
|           Smorgasbord |       201 | forwarddiff |       simple_dict |   true |               3373.4 |                23.4 |
|           Smorgasbord |       201 | reversediff |             typed |   true |               1520.3 |                29.0 |
|           Smorgasbord |       201 |    mooncake |             typed |   true |                977.9 |                 5.4 |
|    Loop univariate 1k |      1000 |    mooncake |             typed |   true |               5579.7 |                 4.1 |
|       Multivariate 1k |      1000 |    mooncake |             typed |   true |               1039.8 |                 8.8 |
|   Loop univariate 10k |     10000 |    mooncake |             typed |   true |              62680.5 |                 3.7 |
|      Multivariate 10k |     10000 |    mooncake |             typed |   true |               8835.6 |                 9.8 |
|               Dynamic |        10 |    mooncake |             typed |   true |                132.6 |                13.6 |
|              Submodel |         1 |    mooncake |             typed |   true |                 14.3 |                 6.6 |
|                   LDA |        12 | reversediff |             typed |   true |                470.0 |                 7.0 |

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.97%. Comparing base (acac44d) to head (07b672b).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #979      +/-   ##
==========================================
- Coverage   83.00%   82.97%   -0.03%     
==========================================
  Files          36       36              
  Lines        3965     3965              
==========================================
- Hits         3291     3290       -1     
- Misses        674      675       +1     

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[coveralls]

Pull Request Test Coverage Report for Build 16170022314

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.03%) to 83.144%

---

Files with Coverage Reduction	New Missed Lines	%
src/compiler.jl	1	87.56%

Totals
Change from base Build 16115950849:	-0.03%
Covered Lines:	3290
Relevant Lines:	3957

---

💛 - Coveralls

[github-actions]

DynamicPPL.jl documentation for PR #979 is available at:
https://TuringLang.github.io/DynamicPPL.jl/previews/PR979/

[mhauru]

Nice work!