UndefVarError: compile_cache not defined

[simonbyrne]

I'm getting occasional errors during CUDA precompilation on Julia 1.9.0

ERROR: LoadError: UndefVarError: `compile_cache` not defined
Stacktrace:
  [1] (::GPUCompiler.var"#107#108")()
    @ GPUCompiler /central/scratch/esm/slurm-buildkite/climacore-ci/2222/depot/default/packages/GPUCompiler/NVLGB/src/rtlib.jl:153
  [2] lock(f::GPUCompiler.var"#107#108", l::ReentrantLock)
    @ Base ./lock.jl:229
  [3] reset_runtime()
    @ GPUCompiler /central/scratch/esm/slurm-buildkite/climacore-ci/2222/depot/default/packages/GPUCompiler/NVLGB/src/rtlib.jl:152
  [4] top-level scope
    @ /central/scratch/esm/slurm-buildkite/climacore-ci/2222/depot/default/packages/CUDA/pCcGc/src/device/runtime.jl:9
  [5] include(mod::Module, _path::String)
    @ Base ./Base.jl:457
  [6] include(x::String)
    @ CUDA /central/scratch/esm/slurm-buildkite/climacore-ci/2222/depot/default/packages/CUDA/pCcGc/src/CUDA.jl:1
  [7] top-level scope
    @ /central/scratch/esm/slurm-buildkite/climacore-ci/2222/depot/default/packages/CUDA/pCcGc/src/CUDA.jl:56
  [8] include
    @ ./Base.jl:457 [inlined]
  [9] include_package_for_output(pkg::Base.PkgId, input::String, depot_path::Vector{String}, dl_load_path::Vector{String}, load_path::Vector{String}, concrete_deps::Vector{Pair{Base.PkgId, UInt128}}, source::String)
    @ Base ./loading.jl:2010
 [10] top-level scope
    @ stdin:2
in expression starting at /central/scratch/esm/slurm-buildkite/climacore-ci/2222/depot/default/packages/CUDA/pCcGc/src/device/runtime.jl:9
in expression starting at /central/scratch/esm/slurm-buildkite/climacore-ci/2222/depot/default/packages/CUDA/pCcGc/src/CUDA.jl:1
in expression starting at stdin:2

e.g. https://buildkite.com/clima/climacore-ci/builds/2222#0188b934-b05e-40f6-adac-591ad68a1ffa/138-336

The interesting thing is that compile_cache is set during __init__, so I wonder if this is related to JuliaLang/julia#48999?

@vchuravy any ideas?

[maleadt]

I wonder if this is related to JuliaLang/julia#48999?

Looks like that indeed. Maybe that's why the Scratch.jl README has a download_cache = "" at top level? Looks fishy, though.