On OS/X Sierra, after recently running a
brew update I started receiving the error message
Sorry, you can't use byebug without Readline when trying to run some rake tasks in my ruby project folder. I observed this in projects and gems that include
pry in their
gem.spec. I've found in my googling that many begin encountering this error message after running a
brew update but there are other triggering conditions as well.
>> rake aws:show_config WARN: Unresolved specs during Gem::Specification.reset: mime-types (>= 0) WARN: Clearing out unresolved specs. Please report a bug if this causes problems. Sorry, you can't use byebug without Readline. To solve this, you need to