Xcode 8.3, 9.x or 10.x / Swift 3 or 4
We recommend Carthage over CocoaPods, but both installation methods are supported.
use_frameworks! target "Change Me!" do pod "PromiseKit", "~> 6.0" end
If the generated Xcode project gives you a warning that PromiseKit needs to be upgraded to Swift 4.0 or Swift 4.2, then add the following:
post_install do |installer| installer.pods_project.targets.each do |target| if target.name == 'PromiseKit' target.build_configurations.each do |config| config.build_settings['SWIFT_VERSION'] = '4.2' end end end end
Adjust the value for
SWIFT_VERSION as needed.
CocoaPods are aware of this issue.
github "mxcl/PromiseKit" ~> 6.0
package.dependencies.append( .Package(url: "https://github.com/mxcl/PromiseKit", majorVersion: 6) )
You can just drop
PromiseKit.xcodeproj into your project and then add
PromiseKit.framework to your app’s embedded frameworks.
PromiseKit vs. Xcode
PromiseKit contains Swift, so there have been rev-lock issues with Xcode:
|PromiseKit||Swift||Xcode||CI Status||Release Notes|
|6||3.1, 3.2, 3.3, 4.x||8.3, 9.x, 10.x||2018/02|
|5||3.1, 3.2, 3.3, 4.x||8.3, 9.x||Deprecated||n/a|
|4†||3.0, 3.1, 3.2, 3.3, 4.x||8.x, 9.x||2016/09|
† Probably supports Xcode 10 and Swift 4.2, if not, PR welcome.
‡ PromiseKit 1 is pure Objective-C and thus can be used with any Xcode, it is also your only choice if you need to support iOS 7 or below.
We also maintain a series of branches to aid migration for PromiseKit 2:
We do not usually backport fixes to these branches, but pull requests are welcome.
Xcode 8 / Swift 2.3 or Xcode 7
# CocoaPods swift_version = "2.3" pod "PromiseKit", "~> 3.5" # Carthage github "mxcl/PromiseKit" ~> 3.5
Using Git Submodules for PromiseKit’s Extensions
Note: This is a more advanced technique.
If you use CocoaPods and a few PromiseKit extensions, then importing PromiseKit causes that module to import all the extension frameworks. Thus, if you have an app and a few app extensions (e.g., iOS app, iOS watch extension, iOS Today extension) then all your final products that use PromiseKit will have forced dependencies on all the Apple frameworks that PromiseKit provides extensions for.
This isn’t that bad, but every framework that loads entails overhead and lengthens startup time.
It’s both better and worse with Carthage. We build individual micro-frameworks for each PromiseKit extension, so your final products link against only the Apple frameworks that they actually need. However, Apple has advised that apps link only against “about 12” frameworks for performance reasons. So with Carthage, we are worse off on this metric.
The solution is to instead import only CorePromise:
# CocoaPods pod "PromiseKit/CorePromise" # Carthage github "mxcl/PromiseKit" # ^^ for Carthage *only* have this
And to use the extensions you need via
git submodule init git submodule add https://github.com/PromiseKit/UIKit Submodules/PMKUIKit
Then in Xcode you can add these sources to your targets on a per-target basis.
Then when you
pod update, ensure that you also update your submodules:
pod update && git submodule update --recursive --remote
6.0 Feb 13th, 2018
3.0 Oct 1st, 2015
In Swift 2.0
defer became reserved keywords mandating we rename
our functions with these names. This forced a major semantic version change on
PromiseKit and thus we took the opportunity to make other minor (source
compatibility breaking) improvements.
Thus if you cannot afford to adapt to PromiseKit 3 but still want to use
Xcode-7.0/Swift-2.0 we provide a minimal changes branch where
defer are renamed
defer_ and all other changes are the bare
minimum to make PromiseKit 2 compile against Swift 2.
If you still are using Xcode 6 and Swift 1.2 then use PromiseKit 2.
2.0 May 14th, 2015
Swift 1.2 support. Xcode 6.3 required.