actually use __init__

src/Plots.jl

@@ -294,19 +294,4 @@ end
 
 const CURRENT_BACKEND = CurrentBackend(:none)
 
-# for compatibility with Requires.jl:
-@init begin
-    if isdefined(Main, :PLOTS_DEFAULTS)
-        if haskey(Main.PLOTS_DEFAULTS, :theme)
-            theme(Main.PLOTS_DEFAULTS[:theme])
-        end
-        for (k,v) in Main.PLOTS_DEFAULTS
-            k == :theme || default(k, v)
-        end
-    end
-    pushdisplay(PlotsDisplay())
-end
-
-# ---------------------------------------------------------
-
 end # module

src/init.jl

@@ -1,4 +1,14 @@
 function __init__()
+    if isdefined(Main, :PLOTS_DEFAULTS)
+        if haskey(Main.PLOTS_DEFAULTS, :theme)
+            theme(Main.PLOTS_DEFAULTS[:theme])
+        end
+        for (k,v) in Main.PLOTS_DEFAULTS
+            k == :theme || default(k, v)
+        end
+    end
+    pushdisplay(PlotsDisplay())
+
     include(joinpath(@__DIR__, "backends", "plotly.jl"))
     include(joinpath(@__DIR__, "backends", "gr.jl"))
     include(joinpath(@__DIR__, "backends", "web.jl"))