Require Bundler (a Gemfile) for all set up Middleman projects. We still do extension auto-discovery for "init". Gemfile may now be in any parent directory of 'config.rb', in case the Middleman project is in a subdirectory of a larger project.

CHANGELOG.md

@@ -1,6 +1,9 @@
 master
 ===
 
+* Remove 'upgrade' and 'install' CLI commands.
+* Gemfile may be in a parent directory of your Middleman project root (where 'config.rb' is).
+* All dependencies for your Middleman project must be expressed in `Gemfile` - Bundler is no longer optional.
 * Asciidoc information now available with the `asciidoc` local, which is a normal hash.
 * Remove `page` template local. Use `current_resource` instead.
 * Dropped support for providing a block to `page` & `proxy`.

middleman-cli/lib/middleman-cli.rb

@@ -88,7 +88,6 @@ end
 
 # Include the core CLI items
 require 'middleman-cli/init'
-require 'middleman-cli/bundler'
 require 'middleman-cli/extension'
 require 'middleman-cli/server'
 require 'middleman-cli/build'

middleman-core/lib/middleman-core/load_paths.rb

@@ -8,35 +8,16 @@ module Middleman
       @_is_setup ||= begin
 
         # Only look for config.rb if MM_ROOT isn't set
-        if !ENV['MM_ROOT'] && found_path = locate_root
+        if !ENV['MM_ROOT'] && (found_path = findup('config.rb'))
           ENV['MM_ROOT'] = found_path
         end
 
-        is_bundler_setup = false
-
         # If we've found the root, try to setup Bundler
         if ENV['MM_ROOT']
-
-          root_gemfile = File.expand_path('Gemfile', ENV['MM_ROOT'])
-          ENV['BUNDLE_GEMFILE'] ||= root_gemfile
-
-          if !File.exists?(ENV['BUNDLE_GEMFILE'])
-            git_gemfile = Pathname.new(__FILE__).expand_path.parent.parent.parent + 'Gemfile'
-            ENV['BUNDLE_GEMFILE'] = git_gemfile.to_s
-          end
-
-          if File.exists?(ENV['BUNDLE_GEMFILE'])
-            is_bundler_setup = true
-            require 'bundler/setup'
-          end
-        end
-
-        # Automatically discover extensions in RubyGems
-        require 'middleman-core/extensions'
-
-        if is_bundler_setup
-          Bundler.require
+          setup_bundler
         else
+          # Automatically discover extensions in RubyGems
+          require 'middleman-core/extensions'
           ::Middleman.load_extensions_in_path
         end
 
@@ -44,11 +25,29 @@ module Middleman
       end
     end
 
-    # Recursive method to find config.rb
-    def locate_root(cwd = Pathname.new(Dir.pwd))
-      return cwd.to_s if (cwd + 'config.rb').exist?
+    private
+
+    # Set BUNDLE_GEMFILE and run Bundler setup. Raises an exception if there is no Gemfile
+    def setup_bundler
+      ENV['BUNDLE_GEMFILE'] ||= findup('Gemfile', ENV['MM_ROOT'])
+
+      if !File.exists?(ENV['BUNDLE_GEMFILE'])
+        ENV['BUNDLE_GEMFILE'] = File.expand_path('../../../../Gemfile', __FILE__)
+      end
+
+      if File.exists?(ENV['BUNDLE_GEMFILE'])
+        require 'bundler/setup'
+        Bundler.require
+      else
+        raise "Couldn't find your Gemfile. Middleman projects require a Gemfile for specifying dependencies."
+      end
+    end
+
+    # Recursive method to find a file in parent directories
+    def findup(filename, cwd = Pathname.new(Dir.pwd))
+      return cwd.to_s if (cwd + filename).exist?
       return false if cwd.root?
-      locate_root(cwd.parent)
+      findup(cwd.parent)
     end
 
   end