爲什麼在某些寶石中沒有gemspec

Question

爲什麼在某些寶石中沒有.gemspec文件，例如。 rspec或rspec-rails，如果沒有.gemspec文件，那麼gem是如何構建的？

謝謝！

Answer 1

.gemspec是需要建立的寶石，但不使用它。它爲什麼會在寶石中？規範已經包含在gem的元數據中，爲什麼要複製它？

gem spec rspec 
# --- !ruby/object:Gem::Specification 
# name: rspec 
# version: !ruby/object:Gem::Version 
# version: 3.0.0 
# platform: ruby 
# authors: 
# - Steven Baker 
# - David Chelimsky 
# - Myron Marston 
# autorequire: 
# bindir: bin 
# cert_chain: [] 
# date: 2014-06-02 00:00:00.000000000 Z 
# dependencies: 
# - !ruby/object:Gem::Dependency 
# name: rspec-core 
# requirement: !ruby/object:Gem::Requirement 
#  requirements: 
#  - - "~>" 
#  - !ruby/object:Gem::Version 
#   version: 3.0.0 
# type: :runtime 
# prerelease: false 
# version_requirements: !ruby/object:Gem::Requirement 
#  requirements: 
#  - - "~>" 
#  - !ruby/object:Gem::Version 
#   version: 3.0.0 
# - !ruby/object:Gem::Dependency 
# name: rspec-expectations 
# requirement: !ruby/object:Gem::Requirement 
#  requirements: 
#  - - "~>" 
#  - !ruby/object:Gem::Version 
#   version: 3.0.0 
# type: :runtime 
# prerelease: false 
# version_requirements: !ruby/object:Gem::Requirement 
#  requirements: 
#  - - "~>" 
#  - !ruby/object:Gem::Version 
#   version: 3.0.0 
# - !ruby/object:Gem::Dependency 
# name: rspec-mocks 
# requirement: !ruby/object:Gem::Requirement 
#  requirements: 
#  - - "~>" 
#  - !ruby/object:Gem::Version 
#   version: 3.0.0 
# type: :runtime 
# prerelease: false 
# version_requirements: !ruby/object:Gem::Requirement 
#  requirements: 
#  - - "~>" 
#  - !ruby/object:Gem::Version 
#   version: 3.0.0 
# description: BDD for Ruby 
# email: rspec@googlegroups.com 
# executables: [] 
# extensions: [] 
# extra_rdoc_files: [] 
# files: [] 
# homepage: http://github.com/rspec 
# licenses: [] 
# metadata: 
# post_install_message: 
# rdoc_options: [] 
# require_paths: 
# - lib 
# required_ruby_version: !ruby/object:Gem::Requirement 
# requirements: 
# - - ">=" 
#  - !ruby/object:Gem::Version 
#  version: '0' 
# required_rubygems_version: !ruby/object:Gem::Requirement 
# requirements: 
# - - ">=" 
#  - !ruby/object:Gem::Version 
#  version: '0' 
# requirements: [] 
# rubyforge_project: rspec 
# rubygems_version: 2.2.2 
# signing_key: 
# specification_version: 4 
# summary: rspec-3.0.0 
# test_files: [] 
# has_rdoc: true