Liftoff is a CLI for creating and configuring iOS Xcode projects.
brew tap thoughtbot/formulae brew install liftoff
Liftoff was previously distributed via RubyGems. This method of installation has been deprecated, and all new releases will be done through Homebrew. If you are migrating from RubyGems, you should uninstall the gem version to avoid confusion in the future.
Run this command in a directory
View the documentation:
man liftoff man liftoffrc
When Liftoff finds an existing project in the current directory, it will perform the following configurations:
- Set the indentation level (In spaces, 4 by default).
- Treat warnings as errors for release schemes.
- Enable warnings at the project level, check
liftoffrc(5)for a list of the warnings.
- Turn on Static Analysis for the project.
- Add a build phase shell script that turns "TODO:" and "FIXME:" into warnings.
- Add a build phase shell script that sets the version to the latest Git tag, and the build number to the number of commits on master.
- Perform arbitrary configuration as defined in the user's
liftoffrc(5)for more information.
- Add default .gitignore and .gitattributes files.
- Initialize a new
gitrepo and create an initial commit (if needed).
When you run Liftoff in a directory without a project file, it will create a new directory structure for a project, and generate a well-configured Xcode project in that subdirectory:
$ cd ~/dev/ $ liftoff Project name? MyCoolApp Company name? thoughtbot Author name? Gordon Fontenot Prefix? MCA Creating MyCoolApp Creating MyCoolApp/Categories Creating MyCoolApp/Classes [snip]
Liftoff will generate a brand new project for you based on the provided values. Generating projects via Liftoff has these advantages:
- Minimized time reorganizing the repository
- Sets up
- Defined group structure
- Matching directory structure on disk (linked to the proper group)
- Easily customizable
- Configurations can be shared easily
You can use a
liftoffrc file to speed up your workflow by defining your
preferred configuration for Liftoff.
Liftoff will look for config files in the local directory and then the home
directory. If it can't find a key in
~/.liftoffrc, it will
use the default values. Check
liftoffrc(5) for more information:
You can see the current liftoffrc on master, but be aware that the keys might not match up completely with the current released version.
Directory Structure and Templates
One of the most powerful things that Liftoff can do for you is let you quickly
and easily customize your project's group and directory structure. By defining
a YAML dictionary inside your local or user
.liftoffrc, you can completely
dictate the structure that will be created. This includes group structure,
order, placement of template files, etc. And remember that these groups will
be mimicked on disk as well.
You can also create your own templates, or override the defaults by adding
./.liftoff/templates. Liftoff will use the
same fallback order when looking for templates as it does for the
These files (and filenames) will be parsed with
ERB, using the values
provided at run time (or the default values from a
Note about Xcode 7.0
In Xcode 7.0, there is a bug that when combined with a bug in Liftoff 1.5 results in a crash when trying to launch a project generated by liftoff. This bug is fixed in Liftoff 1.6, but if you have a project created with a version of liftoff <= 1.5, you might experience this crash.
To fix it:
- Open the project in Xcode 6 or Xcode 7.1+
Main.storyboardfrom the project (only need to remove the reference, you don't need to trash the file itself)
Main.storyboardto the project
Your project should now open cleanly in Xcode 7.0.
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Liftoff is Copyright (c) 2015 thoughtbot, inc. It is free software, and may be redistributed under the terms specified in the LICENSE file.
Liftoff is maintained and funded by thoughtbot, inc. The names and logos for thoughtbot are trademarks of thoughtbot, inc.