Firebaseui-ios: Unable to instal cocoapods

[Tayphoon]

Then try install pods via cocoapods 1.2.1. This is the output:

[!] Unable to find host target(s) for Database, Storage, Auth, Facebook, Google, Phone, Twitter. Please add the host targets for the embedded targets to the Podfile.
Certain kinds of targets require a host target. A host target is a "parent" target which embeds a "child" target. These are example types of targets that need a host target:

• Framework
• App Extension
• Watch OS 1 Extension
• Messages Extension (except when used with a Messages Application)

[morganchen12]

This is a known bug in CocoaPods. You can work around it by using CocoaPods master (pre-release).

[Tayphoon]

It doesn't help.

[morganchen12]

You'll need to specify CocoaPods from git source, not just using prerelease gems. Take a look at this Gemfile and have a look at the bundler docs if you're unfamiliar with bundler.

[CarlosLabrado]

I really don't understand what we have to do here in order to make the pod install work. Install bundler?

[morganchen12]

Install bundler, run bundle install, and then prefix all your gem commands with bundle exec. So your pod install invocation should look like

bundle exec pod install

[eliotstock]

Upgrading to CocoaPods 1.3.0.beta.1 also worked for me.