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Convincing Chef to use Homebrew as its native package management tool

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Octocat-spinner-32 libraries
Octocat-spinner-32 providers
Octocat-spinner-32 recipes
Octocat-spinner-32 resources
Octocat-spinner-32 CHANGELOG.md
Octocat-spinner-32 CONTRIBUTING
Octocat-spinner-32 LICENSE
Octocat-spinner-32 README.md
Octocat-spinner-32 Rakefile
Octocat-spinner-32 metadata.rb
README.md

Description

This cookbook installs Homebrew and replaces MacPorts as the default package provider for the package resource on OS X systems.

This cookbook is now maintained by Opscode. The original author, maintainer and copyright holder is Graeme Mathieson. The cookbook remains licensed under the Apache License version 2.

Original blog post by Graeme

Requirements

Prerequisites

In order for this recipe to work, your userid must own /usr/local. This is outside the scope of the cookbook because it’s anticipated that you’ll run the cookbook as your own user, not root and you’d have to be root to take ownership of the directory. Easiest way to get started:

sudo chown -R `whoami`:staff /usr/local

Bear in mind that this will take ownership of the entire folder and its contents, so if you’ve already got stuff in there (eg MySQL owned by a mysql user) you’ll need to be a touch more careful. This is a recommendation from the Homebrew

Platform

  • Mac OS X (10.6+)

The only platform supported by Homebrew itself at the time of this writing is Mac OS X. It should work fine on Server edition as well, and on platforms that Homebrew supports in the future.

Resources and Providers

package / homebrew_package

This cookbook provides a package provider called homebrew_package which will install/remove packages using Homebrew. This becomes the default provider for package if your platform is Mac OS X.

As this extends the built-in package resource/provider in Chef, it has all the resource attributes and actions available to the package resource. However, a couple notes:

  • Homebrew itself doesn't have a notion of "upgrade" per se. The "upgrade" action will simply perform an install, and if the Homebrew Formula for the package is newer, it will upgrade.
  • Likewise, Homebrew doesn't have a purge, but the "purge" action will act like "remove".

Examples

package "mysql" do
  action :install
end

homebrew_package "mysql"

package "mysql" do
  provider Chef::Provider::Package::Homebrew
end

homebrew_tap

LWRP for brew tap, a Homebrew command used to add additional formula repositories. From the brew man page:

tap [tap]
       Tap a new formula repository from GitHub, or list existing taps.

       tap is of the form user/repo, e.g. brew tap homebrew/dupes.

Default action is :tap which enables the repository. Use :untap to disable a tapped repository.

Examples

homebrew_tap "homebrew/dupes"

homebrew_tap "homebrew/dupes" do
  action :untap
end

Usage

We strongly recommend that you put "recipe[homebrew]" in your node's run list, to ensure that it is available on the system and that Homebrew itself gets installed. Putting an explicit dependency in the metadata will cause the cookbook to be downloaded and the library loaded, thus resulting in changing the package provider on Mac OS X, so if you have systems you want to use the default (Mac Ports), they would be changed to Homebrew.

The default itself ensures that Homebrew is installed and up to date.

License and Author

Author:: Graeme Mathieson (mathie@woss.name)

Copyright:: 2011, Graeme Mathieson

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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