Don't use bare using Foo

Author: DilumAluthge

src/SlurmClusterManager.jl

@@ -1,9 +1,22 @@
 module SlurmClusterManager
 
-export SlurmManager, launch, manage
+# We don't do `using Foo`.
+# We either do `using Foo: hello, world`, or we do `import Foo`.
+# https://github.com/JuliaLang/julia/pull/42080
 
-using Distributed
-import Distributed: launch, manage
+import Distributed
+
+# Bring these names into scope because we are going to re-export them:
+using Distributed: launch, manage
+
+# We re-export Distributed.launch and Distributed.manage:
+export launch, manage
+
+# We also export SlurmManager:
+export SlurmManager
+
+# Bring some other names into scope, just for convenience:
+using Distributed: ClusterManager, WorkerConfig, cluster_cookie
 
 include("slurmmanager.jl")
 

src/slurmmanager.jl

@@ -82,7 +82,7 @@ function _new_environment_additions(params_env::Dict{String, String})
   return env2
 end
 
-function launch(manager::SlurmManager, params::Dict, instances_arr::Array, c::Condition)
+function Distributed.launch(manager::SlurmManager, params::Dict, instances_arr::Array, c::Condition)
     try
         exehome = params[:dir]
         exename = params[:exename]
@@ -157,6 +157,6 @@ function launch(manager::SlurmManager, params::Dict, instances_arr::Array, c::Co
     end
 end
 
-function manage(manager::SlurmManager, id::Integer, config::WorkerConfig, op::Symbol)
+function Distributed.manage(manager::SlurmManager, id::Integer, config::WorkerConfig, op::Symbol)
     # This function needs to exist, but so far we don't do anything
 end