Franklin.jl fails to render page on Julia 1.12

[kellertuer]

I just switched to Julia 1.12 and it seems Frankling (or Markdown?) gets into trouble with Julia 1.12

julia> using Franklin; Franklin.serve()
  Activating project at `~/Repositories/kellertuer.github.io`
→ Initial full pass...
WARNING: Detected access to binding `Main.Utils_2` in a world prior to its definition world.
  Julia 1.12 has introduced more strict world age semantics for global bindings.
  !!! This code may malfunction under Revise.
  !!! This code will error in future versions of Julia.
Hint: Add an appropriate `invokelatest` around the access to this binding.
To make this warning an error, and hence obtain a stack trace, use `julia --depwarn=error`.
┌ Franklin Warning: in <liegroupsjl.md>
│ Encountered an issue processing 'liegroupsjl.md' in r.github.io/projects.
│ Verify, then re-start the Franklin server.
│ The error is displayed below:
│ UndefVarError(:title, 0x00000000000097f9, Main.MD_DEFINITIONS)
└
ERROR: UndefVarError: `title` not defined in `Main.MD_DEFINITIONS`
The binding may be too new: running in world age 38905, while current world is 39107.
Stacktrace:
  [1] getproperty
    @ ./Base_compiler.jl:47 [inlined]
  [2] process_mddefs(blocks::Vector{Franklin.OCBlock}, isconfig::Bool, pagevar::Bool, isinternal::Bool)
    @ Franklin ~/.julia/packages/Franklin/X68Y3/src/converter/markdown/mddefs.jl:36
  [3] convert_md(mds::String, pre_lxdefs::Vector{Franklin.LxDef}; isrecursive::Bool, isinternal::Bool, isconfig::Bool, has_mddefs::Bool, pagevar::Bool, nostripp::Bool)
    @ Franklin ~/.julia/packages/Franklin/X68Y3/src/converter/markdown/md.jl:129
  [4] convert_md (repeats 2 times)
    @ ~/.julia/packages/Franklin/X68Y3/src/converter/markdown/md.jl:23 [inlined]
  [5] convert_and_write(root::String, file::String, head::String, pgfoot::String, foot::String, output_path::String)
    @ Franklin ~/.julia/packages/Franklin/X68Y3/src/manager/write_page.jl:180
  [6] process_file_err(case::Symbol, fpair::Pair{String, String}, head::String, pgfoot::String, foot::String, t::Float64)
    @ Franklin ~/.julia/packages/Franklin/X68Y3/src/manager/file_utils.jl:153
  [7] process_file(::Symbol, ::Pair{String, String}, ::String, ::Vararg{Any})
    @ Franklin ~/.julia/packages/Franklin/X68Y3/src/manager/file_utils.jl:104
  [8] fd_fullpass(watched_files::@NamedTuple{other::Dict{…}, infra::Dict{…}, md::Dict{…}, html::Dict{…}, literate::Dict{…}}, join_to_prepath::String)
    @ Franklin ~/.julia/packages/Franklin/X68Y3/src/manager/franklin.jl:265
  [9] 
    @ Franklin ~/.julia/packages/Franklin/X68Y3/src/manager/franklin.jl:126
 [10] serve()
    @ Franklin ~/.julia/packages/Franklin/X68Y3/src/manager/franklin.jl:49
 [11] top-level scope
    @ REPL[2]:1
Some type information was truncated. Use `show(err)` to see complete types.

One might recognise this is just me locally trying to render my homepage - for now it works when starting back in 1.11

[tlienart]

Hmm yeah Franklin relies on world age stuff for variables in a way that should be revamped to align with the recent 1.12 release which formalises its use. I don't think that's a trivial fix

Would you be ok to open a PR for the readme to indicate that, for now, Franklin doesn't support >= 1.12?

Thanks!

[kellertuer]

Oh, I would struggle quite a bit where to put that in the readme and how to phrase “world age stuff”

[tlienart]

Oh no need to go into details just at the top that Franklinworks with Julia <=1.11 that's all (I'm on my phone so can't easily do it)

[ViralBShah]

I believe Franklin now works fine with Julia 1.12. Please open new issues if necessary.