[x] Swap __dir__ for File.dirname(__FILE__) for Ruby < 2
[x] Check Gem::Specification#metadata exists before setting it
Why?
Ruby 2 introduced __dir__ as a shorthand for directory-containing-current-file, so we can't use it in older rubies.
Rubygems 2 introduced the metadata method (exposed as spec.metadata in the gemspec), so if we try and use it on older rubygem versions it throws a NoMethodError. We can just check for the existence before setting those attributes.
What?
__dir__forFile.dirname(__FILE__)for Ruby < 2Gem::Specification#metadataexists before setting itWhy?
Ruby 2 introduced
__dir__as a shorthand for directory-containing-current-file, so we can't use it in older rubies.Rubygems 2 introduced the metadata method (exposed as
spec.metadatain the gemspec), so if we try and use it on older rubygem versions it throws aNoMethodError. We can just check for the existence before setting those attributes.