问题
I recently upgraded to Ruby v2.7.0.
When I tried to install Nokogiri I got the following error:
ERROR: Error installing nokogiri:
The last version of nokogiri (>= 0) to support your Ruby & RubyGems was
1.10.9. Try installing it with `gem install nokogiri -v 1.10.9`
nokogiri requires Ruby version >= 2.3, < 2.7.dev. The current ruby versi
on is 2.7.0.0.
I tried to install this gem with
gem install nokogiri -v 1.10.9
but I got the same error.
How can I install Nokogiri now that I am using Ruby v2.7.0? Do I need to install an earlier version of Ruby?
The results of gem env are:
RubyGems Environment:
- RUBYGEMS VERSION: 3.1.2
- RUBY VERSION: 2.7.0 (2019-12-25 patchlevel 0) [x64-mingw32]
- INSTALLATION DIRECTORY: C:/Ruby27-x64/lib/ruby/gems/2.7.0
- USER INSTALLATION DIRECTORY: C:/Users/gritz/.gem/ruby/2.7.0
- RUBY EXECUTABLE: C:/Ruby27-x64/bin/ruby.exe
- GIT EXECUTABLE: C:\Program Files\Git\cmd/git.EXE
- EXECUTABLE DIRECTORY: C:/Ruby27-x64/bin
- SPEC CACHE DIRECTORY: C:/Users/gritz/.gem/specs
- SYSTEM CONFIGURATION DIRECTORY: C:/ProgramData
- RUBYGEMS PLATFORMS:
- ruby
- x64-mingw32
- GEM PATHS:
- C:/Ruby27-x64/lib/ruby/gems/2.7.0
- C:/Users/gritz/.gem/ruby/2.7.0
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :backtrace => false
- :bulk_threshold => 1000
- REMOTE SOURCES:
- https://rubygems.org/
- SHELL PATH:
- C:\windows\system32
- C:\windows
- C:\windows\System32\Wbem
- C:\windows\System32\WindowsPowerShell\v1.0\
- C:\windows\System32\OpenSSH\
- C:\Program Files\Intel\WiFi\bin\
- C:\Program Files\Common Files\Intel\WirelessCommon\
- C:\Program Files\erl10.3\bin
- C:\Program Files (x86)\Elixir\bin
- C:\Users\gritz\.mix\escripts
- C:\Program Files\Git\cmd
- C:\Users\gritz\.rbenv-win\bin
- C:\Users\gritz\.rbenv-win\shims
- C:\Users\gritz\.rbenv-win\bin
- C:\Users\gritz\.rbenv-win\shims
- C:\Users\gritz\.rbenv-win\bin
- C:\Users\gritz\.rbenv-win\shims
- _SZ C:\Ruby26\bin
- C:\Ruby27-x64\bin
- C:\Ruby26-x64\bin
- %USERPROFILE%\AppData\Local\Microsoft\WindowsApps
In response to one of the comments, I am adding the results of gem specification -r nokogiri:
-r nokogiri
--- !ruby/object:Gem::Specification
name: nokogiri
version: !ruby/object:Gem::Version
version: 1.10.9
platform: ruby
authors:
- Aaron Patterson
- Mike Dalessio
- Yoko Harada
- Tim Elliott
- Akinori MUSHA
- John Shahid
- Lars Kanis
autorequire:
bindir: bin
cert_chain: []
date: 2020-03-01 00:00:00.000000000 Z
dependencies:
- !ruby/object:Gem::Dependency
name: mini_portile2
requirement: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: 2.4.0
type: :runtime
prerelease: false
version_requirements: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: 2.4.0
- !ruby/object:Gem::Dependency
name: concourse
requirement: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '0.24'
type: :development
prerelease: false
version_requirements: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '0.24'
- !ruby/object:Gem::Dependency
name: hoe-bundler
requirement: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '1.2'
type: :development
prerelease: false
version_requirements: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '1.2'
- !ruby/object:Gem::Dependency
name: hoe-debugging
requirement: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '2.0'
type: :development
prerelease: false
version_requirements: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '2.0'
- !ruby/object:Gem::Dependency
name: hoe-gemspec
requirement: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '1.0'
type: :development
prerelease: false
version_requirements: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '1.0'
- !ruby/object:Gem::Dependency
name: hoe-git
requirement: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '1.6'
type: :development
prerelease: false
version_requirements: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '1.6'
- !ruby/object:Gem::Dependency
name: minitest
requirement: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '5.8'
type: :development
prerelease: false
version_requirements: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '5.8'
- !ruby/object:Gem::Dependency
name: racc
requirement: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: 1.4.14
type: :development
prerelease: false
version_requirements: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: 1.4.14
- !ruby/object:Gem::Dependency
name: rake
requirement: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '12.0'
type: :development
prerelease: false
version_requirements: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '12.0'
- !ruby/object:Gem::Dependency
name: rake-compiler
requirement: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: 1.1.0
type: :development
prerelease: false
version_requirements: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: 1.1.0
- !ruby/object:Gem::Dependency
name: rake-compiler-dock
requirement: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: 0.7.0
type: :development
prerelease: false
version_requirements: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: 0.7.0
- !ruby/object:Gem::Dependency
name: rexical
requirement: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: 1.0.5
type: :development
prerelease: false
version_requirements: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: 1.0.5
- !ruby/object:Gem::Dependency
name: rubocop
requirement: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '0.73'
type: :development
prerelease: false
version_requirements: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '0.73'
- !ruby/object:Gem::Dependency
name: simplecov
requirement: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '0.16'
type: :development
prerelease: false
version_requirements: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '0.16'
- !ruby/object:Gem::Dependency
name: rdoc
requirement: !ruby/object:Gem::Requirement
requirements:
- - ">="
- !ruby/object:Gem::Version
version: '4.0'
- - "<"
- !ruby/object:Gem::Version
version: '7'
type: :development
prerelease: false
version_requirements: !ruby/object:Gem::Requirement
requirements:
- - ">="
- !ruby/object:Gem::Version
version: '4.0'
- - "<"
- !ruby/object:Gem::Version
version: '7'
- !ruby/object:Gem::Dependency
name: hoe
requirement: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '3.22'
type: :development
prerelease: false
version_requirements: !ruby/object:Gem::Requirement
requirements:
- - "~>"
- !ruby/object:Gem::Version
version: '3.22'
description: |-
Nokogiri (?) is an HTML, XML, SAX, and Reader parser. Among
Nokogiri's many features is the ability to search documents via XPath
or CSS3 selectors.
email:
- aaronp@rubyforge.org
- mike.dalessio@gmail.com
- yokolet@gmail.com
- tle@holymonkey.com
- knu@idaemons.org
- jvshahid@gmail.com
- lars@greiz-reinsdorf.de
executables: []
extensions: []
extra_rdoc_files: []
files: []
homepage: https://nokogiri.org
licenses: []
metadata:
homepage_uri: https://nokogiri.org
bug_tracker_uri: https://github.com/sparklemotion/nokogiri/issues
documentation_uri: https://nokogiri.org/rdoc/index.html
changelog_uri: https://nokogiri.org/CHANGELOG.html
source_code_uri: https://github.com/sparklemotion/nokogiri
post_install_message:
rdoc_options: []
require_paths:
- lib
required_ruby_version: !ruby/object:Gem::Requirement
requirements:
- - ">="
- !ruby/object:Gem::Version
version: 2.3.0
required_rubygems_version: !ruby/object:Gem::Requirement
requirements:
- - ">="
- !ruby/object:Gem::Version
version: '0'
requirements: []
rubygems_version: 3.1.2
signing_key:
specification_version: 4
summary: Nokogiri (?) is an HTML, XML, SAX, and Reader parser
test_files: []
回答1:
If you're using Ruby + DevKit, try this command:
gem install nokogiri --platform=ruby
It should install nokogiri and make it fit with your version of Ruby. In case if it fails again or takes forever to fetch and install gem, run this command first:
ridk exec pacman -S mingw-w64-x86_64-libxslt
Then this one:
gem install nokogiri --platform=ruby -- --use-system-libraries
Nokogori should be installed after these commands.
来源：https://stackoverflow.com/questions/60658746/how-to-install-nokogiri-on-ruby-2-7-0