From 7ca3a15c199e92bf75a315ac03459dde2dfecf97 Mon Sep 17 00:00:00 2001
From: Krzysztof Wende <krzysztof.wende@gmail.com>
Date: Wed, 9 May 2018 23:14:36 +0200
Subject: [PATCH] Warn when elchemy not installed

---
 lib/mix/tasks/compile.elchemy.ex | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/lib/mix/tasks/compile.elchemy.ex b/lib/mix/tasks/compile.elchemy.ex
index 93448ee..691d0a4 100644
--- a/lib/mix/tasks/compile.elchemy.ex
+++ b/lib/mix/tasks/compile.elchemy.ex
@@ -6,12 +6,17 @@ defmodule Mix.Tasks.Compile.Elchemy do
     src = project[:elchemy_path]
     dests = project[:elixirc_paths] || ["lib"]
 
-    #unless src, do: IO.warn "No 'elchemy_path' setting found"
+    # Crash if elchemy not found globally
+    unless 0 == Mix.shell.cmd("which elchemy") do
+      Mix.raise "Elchemy not installed globally. You need to run `npm install elchemy -g`"
+    end
+
+    # Crash if elchemy not found globally
     unless dests, do: IO.warn "No 'elixirc_paths' setting found"
     if src && dests do
       [dest | _] = dests
       unless 0 == Mix.shell.cmd("elchemy compile #{src} #{dest}") do
-        Mix.raise "Compilation error"
+        Mix.raise "Elchemy failed the compilation with an error\n"
       end
     end
 
@@ -24,10 +29,5 @@ defmodule Mix.Tasks.Compile.Elchemy do
     Mix.Task.run "deps.get"
     Mix.Task.run "deps.compile"
     IO.puts "-- Elchemy compilation complete --\n"
-
-    unless System.version |> Version.compare("1.6.0") == :lt do
-      Mix.Task.run("format", ["lib/**/*.elchemy.{ex,exs}"])
-    end
-    IO.puts "-- Elchemy format complete --\n"
   end
 end