From 3e78f61d0f94387f62b4bd735518bfb22111c0cb Mon Sep 17 00:00:00 2001
From: "Steven G. Johnson" <stevenj@mit.edu>
Date: Fri, 12 Oct 2018 16:07:32 -0400
Subject: [PATCH] store prefs in depot_path/prefs (#760)

* store prefs in depot_path/prefs

As a stopgap until we get proper package options (JuliaLang/Juleps#38), store JUPYTER preference in depot_path/prefs/IJulia so that it isn't forgotten when IJulia is updated.  See also JuliaPy/PyCall.jl#589

* misplaced const
---
 deps/build.jl | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/deps/build.jl b/deps/build.jl
index 81ce8cc6..4769e8e5 100644
--- a/deps/build.jl
+++ b/deps/build.jl
@@ -25,8 +25,11 @@ function prog_version(prog)
         return v"0.0"
     end
 end
+    
+prefsfile = joinpath(first(DEPOT_PATH), "prefs", "IJulia")
+mkpath(dirname(prefsfile))
 
-global jupyter = get(ENV, "JUPYTER", isfile("JUPYTER") ? readchomp("JUPYTER") : Compat.Sys.isunix() && !Compat.Sys.isapple() ? "jupyter" : "")
+global jupyter = get(ENV, "JUPYTER", isfile(prefsfile) ? readchomp(prefsfile) : Compat.Sys.isunix() && !Compat.Sys.isapple() ? "jupyter" : "")
 if isempty(jupyter)
     jupyter_vers = nothing
 else
@@ -117,7 +120,7 @@ deps = """
 if !isfile("deps.jl") || read("deps.jl", String) != deps
     write("deps.jl", deps)
 end
-write("JUPYTER", jupyter)
+write(prefsfile, jupyter)
 
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 catch