Warns rather than fail if external project isn't linked

dev/dvm/lib/dvm/project/project.rb

@@ -1,27 +1,36 @@
 require "mixlib/shellout"
+require "highline/import"
+
 module DVM
   class Project
     attr_reader :name, :project, :config, :service, :project_dir, :path, :external, :omnibus_project
     include DVM::Tools
+
     # TODO check required fields in config
     def initialize(project_name, config)
       @project = config['projects'][project_name]
       @external = @project['external'] || false
-      # We're not doing auto-checkout for now - so tell them they need to find a mising thing
       @omnibus_project = @project['omnibus-project'] || "opscode"
       @name = project.has_key?('name') ? project['name'] : project_name
+
       if external
         @path = project['path'] || "external-deps/#{name}"
       else
         @path = project['path'] || "src/#{name}"
       end
+
       @project_dir = "/host/#{path}"
-      if (external and !File.exists?(@project_dir))
-        raise DVM::DVMArgumentError, "Please check out or symlink #{name} into chef-server/external-deps on your host before attempting to load it."
-      end
+      warn_if_not_linked
       @config = config
       @service = @project['service']
     end
+
+    def warn_if_not_linked
+      if (external and !File.exists?(project_dir))
+        say(HighLine.color("Please check out or symlink #{name} into chef-server/external-deps on your host before attempting to load it.", :yellow))
+      end
+    end
+
     def start(args, detach)
       raise DVM::DVMArgumentError, "Start not supported for #{name}"
     end
@@ -47,12 +56,14 @@ def deps
     def load(build)
       do_load(build)
     end
+
     def do_load(build)
     end
 
     def unload
       do_unload
     end
+
     def do_unload
       raise "You should implement this now."
     end
@@ -112,6 +123,5 @@ def update(args)
     def console
       raise DVM::DVMArgumentError, "This project does not support a console."
     end
-
   end
 end