FileWatching required in sysimage for parellel precompilation to work otherwise ungracefully errors.

[KristofferC]

This line

julia/base/precompilation.jl

Line 1036 in 55bdb54

FileWatching = Base.loaded_modules[Base.PkgId(Base.UUID("7b1f6079-737a-58dc-b8bc-7a2ca5c1b5ee"), "FileWatching")]

fails if one builds a sysimage without FileWatching. It should instead probably run without the pid locking if FileWatching does not exist in the sysimage, or try load it. I tried to change it to using require_stdlib but this code gets run during Pkg precompilation and then we get an error trying to use require_stdlib during package precompilation.

[IanButterworth]

Revive #51463 ?

[KristofferC]

I had already made #56570 before seeing your comment.