Merge pull request #651 from ReactiveCocoa/update-podspec

[podspec] Add cocoapods_version and swift_version to be explicit

Author: ikesyo

.travis.yml

@@ -38,6 +38,9 @@ jobs:
           XCODE_DESTINATION="platform=watchOS Simulator,name=Apple Watch Series 3 - 38mm"
           script/build
     - script:
+        # To work around the lint error: "ERROR | swift: Specification `ReactiveSwift` specifies an inconsistent `swift_version` (`4.1`) compared to the one present in your `.swift-version` file (`4.1.2`). Please remove the `.swift-version` file which is now deprecated and only use the `swift_version` attribute within your podspec."
+        # `.swift-version` is for swiftenv, not for CocoaPods, so we can't remove the file as suggested.
+        - rm .swift-version
         - pod repo update --silent
         - pod lib lint ReactiveSwift.podspec
       env:

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 *Please add new entries at the top.*
 
+1. [CocoaPods] CocoaPods 1.4.0 is the minimum required version. (#651, kudos to @ikesyo)
 1. `<~` bindings now works with optional left-hand-side operands. (#642, kudos to @andersio and @Ankit-Aggarwal)
 
    ```swift

ReactiveSwift.podspec

@@ -20,4 +20,7 @@ Pod::Spec.new do |s|
   s.dependency 'Result', '~> 4.0'
 
   s.pod_target_xcconfig = {"OTHER_SWIFT_FLAGS[config=Release]" => "$(inherited) -suppress-warnings" }
+
+  s.cocoapods_version = ">= 1.4.0"
+  s.swift_version = "4.1"
 end