HuggingFace download broken on Julia 1.10 (by ValSplit.jl?)

[svilupp]

First of all, thank you for the awesome package!

If I run a snippet from the docs to load bert config from HF Hub (load_config("bert-base-cased")), I get an error ERROR: MethodError: no method matching iterate(::Nothing)

Possible root cause: I validated that HF Hub, download and parser are working correctly. So I believe ValSplit.jl is the culprit on this line

It works on Julia 1.9 as expected, but not 1.10. It's a shame because transformers loads so much faster on 1.10!

MWE on Julia 1.10

using Transformers
using Transformers.HuggingFace

load_config("bert-base-cased")
# ERROR: MethodError: no method matching iterate(::Nothing)

Full stacktrace

ERROR: MethodError: no method matching iterate(::Nothing)

Closest candidates are:
  iterate(::Base.RegexMatchIterator)
   @ Base regex.jl:686
  iterate(::Base.RegexMatchIterator, ::Any)
   @ Base regex.jl:686
  iterate(::LLVM.ValueUseSet)
   @ LLVM ~/.julia/packages/LLVM/Od0DH/src/core/value.jl:146
  ...

Stacktrace:
  [1] iterate(::Base.Iterators.Filter{Tricks.var"#7#9"{Nothing}, Nothing})
    @ Base.Iterators ./iterators.jl:516
  [2] iterate(::Base.Generator{Base.Iterators.Filter{Tricks.var"#7#9"{Nothing}, Nothing}, Tricks.var"#6#8"})
    @ Base ./generator.jl:44
  [3] _collect(::Type{Method}, itr::Base.Generator{Base.Iterators.Filter{Tricks.var"#7#9"{Nothing}, Nothing}, Tricks.var"#6#8"}, isz::Base.SizeUnknown)
    @ Base ./array.jl:698
  [4] collect(::Type{Method}, itr::Base.Generator{Base.Iterators.Filter{Tricks.var"#7#9"{Nothing}, Nothing}, Tricks.var"#6#8"})
    @ Base ./array.jl:692
  [5] _methods(f_type::Any, t_type::Any, mod::Nothing)
    @ Tricks ~/.julia/packages/Tricks/7oAyo/src/Tricks.jl:146
  [6] _methods(f_type::Any, t_type::Any, mod::Nothing)
    @ Tricks ~/.julia/packages/Tricks/7oAyo/src/Tricks.jl:143 [inlined]
  [7] #s3#3
    @ ValSplit ~/.julia/packages/ValSplit/MMCz3/src/ValSplit.jl:42 [inlined]
  [8] var"#s3#3"(T::Any, N::Any, P::Any, ::Any, f::Any, types::Any, idx::Any, ptype::Any)
    @ ValSplit ./none:0
  [9] (::Core.GeneratedFunctionStub)(::UInt64, ::LineNumberNode, ::Any, ::Vararg{Any})
    @ Core ./boot.jl:600
 [10] valarg_params(f::typeof(config_type), types::Type{Tuple{Val}}, idx::Val{1}, ptype::Type{Symbol})
    @ ValSplit ~/.julia/packages/ValSplit/MMCz3/src/ValSplit.jl:60 [inlined]
 [11] config_type(model_type::Symbol)
    @ Transformers.HuggingFace ~/.julia/packages/ValSplit/MMCz3/src/ValSplit.jl:141
 [12] load_config(model_type::Symbol, cfg::JSON3.Object{Vector{UInt8}, Vector{UInt64}})
    @ Transformers.HuggingFace ~/.julia/packages/Transformers/qhUJm/src/huggingface/configs/auto.jl:67
 [13] _load_config(cfg::JSON3.Object{Vector{UInt8}, Vector{UInt64}})
    @ Transformers.HuggingFace ~/.julia/packages/Transformers/qhUJm/src/huggingface/configs/auto.jl:56
 [14] load_config(model::String; kw::@Kwargs{})
    @ Transformers.HuggingFace ~/.julia/packages/Transformers/qhUJm/src/huggingface/configs/auto.jl:42
 [15] top-level scope
    @ ~/Documents/Julia-training-range/transformers/first.jl:12
    ```
    
Version: Transformers 0.2.7 (latest)

Versioninfo:
> Julia Version 1.10.0-beta1
> Commit 6616549950e (2023-07-25 17:43 UTC)
> Platform Info:
>   OS: macOS (arm64-apple-darwin22.4.0)
>   CPU: 8 × Apple M1 Pro
>   WORD_SIZE: 64
>   LIBM: libopenlibm
>   LLVM: libLLVM-15.0.7 (ORCJIT, apple-m1)
>   Threads: 1 on 6 virtual cores
> Environment:
>   JULIA_EDITOR = code

[chengchingwen]

It seems to be caused by ValSplit. We might need to wait until that get fixed.