trying JULIA_NUM_PRECOMPILE_TASKS=1

src/evaluation/WorkspaceManager.jl

@@ -284,10 +284,16 @@ function create_workspaceprocess(WorkerType; compiler_options=CompilerOptions(),
         Status.report_business_started!(status, Symbol(1))
         Status.report_business_planned!(status, Symbol(2))
 
+        env = String[]
         # NOTE: Test to reduce the required memory on windows
         # ....  see https://github.com/JuliaLang/julia/pull/47803
         # ....  the same fix can maybe be applied to other os?
-        env = Sys.iswindows() && WorkerType == Malt.Worker ? String["OPENBLAS_NUM_THREADS=1"] : String[]
+        if Sys.iswindows() && WorkerType == Malt.Worker
+            push!(env, "OPENBLAS_NUM_THREADS=1")
+            if VERSION < v"1.7.0"
+                push!(env, "JULIA_NUM_PRECOMPILE_TASKS=1")
+            end
+        end
         worker = WorkerType(; exeflags=_convert_to_flags(compiler_options), env)
 
         Status.report_business_finished!(status, Symbol(1))