From 962f0d1e583742a3142913f336a62f8c96b76cf6 Mon Sep 17 00:00:00 2001
From: Giorgio Calderone <giorgio.calderone@gmail.com>
Date: Wed, 1 Apr 2020 11:23:27 +0200
Subject: [PATCH] Automatically enable dry sessions when gnuplot can not be
 executed

---
 src/Gnuplot.jl | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/Gnuplot.jl b/src/Gnuplot.jl
index 293fac2..69895d1 100644
--- a/src/Gnuplot.jl
+++ b/src/Gnuplot.jl
@@ -315,9 +315,17 @@ function GPSession(sid::Symbol)
         return nothing
     end
 
-
-    gpversion()
     session = DrySession(sid)
+    if !options.dry
+        try
+            gpversion()
+        catch
+            @warn "Cound not start a gnuplot process with command \"$(options.cmd)\".  Enabling dry sessions..."
+            options.dry = true
+            sessions[sid] = session
+            return session
+        end
+    end
 
     pin  = Base.Pipe()
     pout = Base.Pipe()