From 3efdc8960cfc6d08d94f6ee7334aa95c340938a8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Reu=C3=9Fe?= <seb@wirrsal.net>
Date: Tue, 4 Sep 2018 10:39:49 +0200
Subject: [PATCH] vagrant init: Support VAGRANT_DEFAULT_TEMPLATE

---
 plugins/commands/init/command.rb                 |  2 +-
 test/unit/plugins/commands/init/command_test.rb  | 16 ++++++++++++++++
 .../docs/other/environmental-variables.html.md   |  5 +++++
 3 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/plugins/commands/init/command.rb b/plugins/commands/init/command.rb
index a55ad2b1d..04f3e6fb8 100644
--- a/plugins/commands/init/command.rb
+++ b/plugins/commands/init/command.rb
@@ -14,7 +14,7 @@ module VagrantPlugins
           force: false,
           minimal: false,
           output: "Vagrantfile",
-          template: nil
+          template: ENV["VAGRANT_DEFAULT_TEMPLATE"]
         }
 
         opts = OptionParser.new do |o|
diff --git a/test/unit/plugins/commands/init/command_test.rb b/test/unit/plugins/commands/init/command_test.rb
index e821c5a2e..ea860467e 100644
--- a/test/unit/plugins/commands/init/command_test.rb
+++ b/test/unit/plugins/commands/init/command_test.rb
@@ -55,6 +55,22 @@ describe VagrantPlugins::CommandInit::Command do
       expect(contents).to match(/config.vm.hostname = "vagrant.dev"/)
     end
 
+    it "creates a custom Vagrant file using a template provided from the environment" do
+      with_temp_env("VAGRANT_DEFAULT_TEMPLATE" => "test/unit/templates/commands/init/Vagrantfile") do
+        described_class.new([], env).execute
+      end
+      contents = File.read(vagrantfile_path)
+      expect(contents).to match(/config.vm.hostname = "vagrant.dev"/)
+    end
+
+    it "ignores the environmentally-set default template when a template is explicitly set" do
+      with_temp_env("VAGRANT_DEFAULT_TEMPLATE" => "/this_file_does_not_exist") do
+        described_class.new(["--template", "test/unit/templates/commands/init/Vagrantfile"], env).execute
+      end
+      contents = File.read(vagrantfile_path)
+      expect(contents).to match(/config.vm.hostname = "vagrant.dev"/)
+    end
+
     it "ignores the -m option when using a provided template" do
       described_class.new(["-m", "--template", ::Vagrant.source_root.join("test/unit/templates/commands/init/Vagrantfile").to_s], env).execute
       contents = File.read(vagrantfile_path)
diff --git a/website/source/docs/other/environmental-variables.html.md b/website/source/docs/other/environmental-variables.html.md
index 21a3345e8..0ae2cc80b 100644
--- a/website/source/docs/other/environmental-variables.html.md
+++ b/website/source/docs/other/environmental-variables.html.md
@@ -37,6 +37,11 @@ Vagrant to use this provider for any _new_ Vagrant environments. Existing
 Vagrant environments will continue to use the provider they came `up` with.
 Once you `vagrant destroy` existing environments, this will take effect.
 
+## `VAGRANT_DEFAULT_TEMPLATE`
+
+This configures the template used by `vagrant init` when the `--template` option
+is not provided.
+
 ## `VAGRANT_PREFERRED_PROVIDERS`
 
 This configures providers that Vagrant should prefer.