Invalidate precompilation cache

t-bltg · November 29, 2022, 12:33pm

How can I invalidate the precompilation cache in a programmable way from within julia, to force precompilation upon restart ?

StefanKarpinski · November 29, 2022, 4:13pm

You can delete the files.

t-bltg · November 29, 2022, 4:15pm

Sure , but is there are Base officially supported way ?

I need to add this to Plots in select `Plots` backend via `Preferences` (or env variable) by t-bltg · Pull Request #4566 · JuliaPlots/Plots.jl · GitHub, upon changing the backend via Preferences.

Oscar_Smith · November 29, 2022, 4:16pm

I’ve really wanted this too.

t-bltg · November 29, 2022, 4:38pm

This seems to work:

rm.(Base.find_all_in_cache_path(Base.module_keys[Plots]))

mkitti · November 29, 2022, 6:29pm

Preferences.jl should address this as long as you use @load_preference during every precompilation.

github.com

JuliaLang/julia/blob/edc8241acf912fc009419ccc37ff8e6b3d7807c6/base/loading.jl#L2161-L2163


      
          # In `Preferences.jl`, if someone calls `load_preference(@__MODULE__, key)` while we're precompiling,
          # we mark that usage as a usage at compile-time and call this method, so that at the end of `.ji` generation,
          # we can record the list of compile-time preferences and embed that into the `.ji` header

If you don’t use it during a precompilation session, then Julia will not know it should check that file and will not invalidate the cache.

StefanKarpinski · November 29, 2022, 9:40pm

Would be nice to have an official API for this if people want to propose one.

giordano · December 2, 2022, 12:35pm

Doesn’t Base.compilecache do that already?