Make Distributed support a package extension

This shaves off ~180ms from loading, though it does require Julia 1.9+.

Project.toml

@@ -4,11 +4,18 @@ authors = ["Nicholas Bauer <[email protected]>"]
 version = "0.2.3"
 
 [deps]
-Distributed = "8ba89e20-285c-5b6f-9357-94700520ee1b"
 REPL = "3fa0cd96-eef1-5676-8a61-b3b8758bbffb"
 
+[weakdeps]
+Distributed = "8ba89e20-285c-5b6f-9357-94700520ee1b"
+
+[extensions]
+DistributedExt = ["Distributed"]
+
 [compat]
-julia = "1.6"
+Distributed = "1"
+REPL = "1"
+julia = "1.9"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"

src/override-Distributed-process_messages.jl → ext/DistributedExt.jl

@@ -1,14 +1,15 @@
-__precompile__(false)
+module DistributedExt
 
-import Base:
-    showerror
+__precompile__(false)
 
 import Distributed:
     myid,
     RemoteException
 
 # copied from Distributed/process_messages.jl and added dealing with RemoteException
-function showerror(io::IO, re::RemoteException)
+function Base.showerror(io::IO, re::RemoteException)
     (re.pid != myid()) && print(io, "On worker ", re.pid, ":\n")
     showerror(IOContext(io, :compacttrace => false), re.captured)
-end
+end
+
+end

src/AbbreviatedStackTraces.jl

@@ -7,7 +7,6 @@ include("override-errorshow.jl")
 include("override-show.jl")
 include("override-stacktraces.jl")
 include("override-REPL.jl")
-include("override-Distributed-process_messages.jl")
 
 import Base:
     printstyled,