我在RHEL7机器上安装了ruby 1.8.7，使用了rubygems 2.7.6。我知道1.8.7已经过时了，但我需要它来运行我们的特定软件包。当我尝试安装任何gem时，它会遇到Gem :: Package :: PathError。
$ gem install rb-readline
YAML safe loading is not available. Please upgrade psych to a version that supports safe loading (>= 2.0).
ERROR: While executing gem ... (Gem::Package::PathError)
installing into parent path CHANGES of /eog/reference/lib/ruby/gems/1.8/gems/rb-readline-0.5.5 is not allowed
这是我的gem env输出
YAML safe loading is not available. Please upgrade psych to a version that supports safe loading (>= 2.0).
RubyGems Environment:
- RUBYGEMS VERSION: 2.7.6
- RUBY VERSION: 1.8.7 (2013-06-27 patchlevel 374) [x86_64-linux]
- INSTALLATION DIRECTORY: /eog/reference/lib/ruby/gems/1.8
- USER INSTALLATION DIRECTORY: /home/nrt/.gem/ruby/1.8
- RUBY EXECUTABLE: /eog/reference/bin/ruby
- EXECUTABLE DIRECTORY: /eog/reference/bin
- SPEC CACHE DIRECTORY: /home/nrt/.gem/specs
- SYSTEM CONFIGURATION DIRECTORY: /eog/reference/etc
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-linux
- GEM PATHS:
- /eog/reference/lib/ruby/gems/1.8
- /home/nrt/.gem/ruby/1.8
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :backtrace => false
- :bulk_threshold => 1000
- REMOTE SOURCES:
- https://rubygems.org/
- SHELL PATH:
- /usr/lib/qt-3.3/bin
- /eog/reference/bin
- /eog/reference/scripts
- /eog/reference/matlab
- /eog/reference/java
-
- /usr/local/bin
- /usr/bin
- /usr/local/sbin
- /usr/sbin
- /opt/ngdc/groovy/bin
- /opt/ngdc/p7zip/bin
- /home/nrt/.local/bin
- /home/nrt/bin
我怀疑安装心理可能会解决问题，但它需要ruby＆gt; = 2.2.2。
YAML safe loading is not available. Please upgrade psych to a version that supports safe loading (>= 2.0).
ERROR: Error installing psych:
There are no versions of psych (>= 0) compatible with your Ruby & RubyGems
psych requires Ruby version >= 2.2.2. The current ruby version is 1.8.
由于我无法将ruby升级到超过1.8.7，这将导致软件崩溃。我试着按照命令降级rubygems但没有成功。
gem update --system 1.3.7
我可以解决gem安装问题的任何想法，或者如果没有，请将我的rubygems降级到旧版本？