Bug #16462
Updated by zw963 (Wei Zheng) over 4 years ago
I don't know how to exactly describe this issue, following is try to reproduce.
We can use a gem named "looksee", it was supported ruby 2.7 ready.
same issue happen on several gem, looksee is just for a sample for describe this issue.
1) i change $RUBYLIB ENV locally for use some gem easy. (globally used by all my own local project)
```sh
╭─ 17:41 zw963 ⮀ ~ ⮀ ➦ ruby-2.7.0
╰─ $ echo $RUBYLIB
/home/zw963/Dropbox/common/ruby/lib
```
2) Following is my directory content for my ~/Dropbox/common/ruby/lib, code is working.
```sh
╰─ $ tree
looksee.rb
looksee
├── adapter
│ ├── base.rb
│ └── rubinius.rb
├── adapter.rb
├── clean.rb
├── columnizer.rb
├── core_ext.rb
├── editor.rb
├── help.rb
├── inspector.rb
├── JRuby.jar
├── lookup_path.rb
├── mri.2.1.0.so
├── mri.2.2.0.so
├── mri.2.3.0.so
├── mri.2.4.0.so
├── mri.2.5.0.so
├── mri.2.6.0.so
├── mri.2.7.0.so
└── version.rb
```
3) let us run Irb, puts $LOAD_PATH, and require 'looksee'
```sh
╭─ 17:52 zw963 ⮀ ~/Dropbox/common/ruby/lib ⮀ ⭠ (f99118fef) test *$% ➦ ruby-2.7.0
╰─ $ RUBYOPT= irb -f
irb(main):001:0> puts $LOAD_PATH
/home/zw963/Dropbox/common/ruby/lib
/home/zw963/.rvm/rubies/ruby-2.7.0/lib/ruby/site_ruby/2.7.0
/home/zw963/.rvm/rubies/ruby-2.7.0/lib/ruby/site_ruby/2.7.0/x86_64-linux
/home/zw963/.rvm/rubies/ruby-2.7.0/lib/ruby/site_ruby
/home/zw963/.rvm/rubies/ruby-2.7.0/lib/ruby/vendor_ruby/2.7.0
/home/zw963/.rvm/rubies/ruby-2.7.0/lib/ruby/vendor_ruby/2.7.0/x86_64-linux
/home/zw963/.rvm/rubies/ruby-2.7.0/lib/ruby/vendor_ruby
/home/zw963/.rvm/rubies/ruby-2.7.0/lib/ruby/2.7.0
/home/zw963/.rvm/rubies/ruby-2.7.0/lib/ruby/2.7.0/x86_64-linux
=> nil
irb(main):002:0> require 'looksee'
Traceback (most recent call last):
15: from /home/zw963/.rvm/rubies/ruby-2.7.0/bin/irb:23:in `<main>'
14: from /home/zw963/.rvm/rubies/ruby-2.7.0/bin/irb:23:in `load'
13: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/irb-1.2.1/exe/irb:11:in `<top (required)>'
12: from (irb):2
11: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
10: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
9: from /home/zw963/Dropbox/common/ruby/lib/looksee.rb:1:in `<top (required)>'
8: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
7: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
6: from /home/zw963/Dropbox/common/ruby/lib/looksee/clean.rb:4:in `<top (required)>'
5: from /home/zw963/Dropbox/common/ruby/lib/looksee/clean.rb:171:in `<module:Looksee>'
4: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
3: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
2: from /home/zw963/Dropbox/common/ruby/lib/looksee/adapter.rb:1:in `<top (required)>'
1: from /home/zw963/Dropbox/common/ruby/lib/looksee/adapter.rb:2:in `<module:Looksee>'
NameError (uninitialized constant Looksee::Adapter)
irb(main):003:0>
irb(main):002:0>
```
4) the reason cause this is, i guess, following code is not working, some **circular dependency** was happen.
```rb
module Looksee
...
autoload :Adapter, 'looksee/adapter'
...
end
```
Please check the source code here:
https://github.com/oggy/looksee/blob/master/lib/looksee/clean.rb#L12
5) if ``require "looksee/adapter"`` directly, it working.
```rb
╰─ $ RUBYOPT= irb -f
irb(main):001:0> require 'looksee/adapter'
=> true
```
But, if ``require "looksee"`` first, then ``require "looksee/adapter"``, still broken.
```sh
╰─ $ RUBYOPT= irb -f
irb(main):001:0> require 'looksee'
Traceback (most recent call last):
15: from /home/zw963/.rvm/rubies/ruby-2.7.0/bin/irb:23:in `<main>'
14: from /home/zw963/.rvm/rubies/ruby-2.7.0/bin/irb:23:in `load'
13: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/irb-1.2.1/exe/irb:11:in `<top (required)>'
12: from (irb):1
11: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
10: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
9: from /home/zw963/Dropbox/common/ruby/lib/looksee.rb:1:in `<top (required)>'
8: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
7: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
6: from /home/zw963/Dropbox/common/ruby/lib/looksee/clean.rb:4:in `<top (required)>'
5: from /home/zw963/Dropbox/common/ruby/lib/looksee/clean.rb:171:in `<module:Looksee>'
4: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
3: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
2: from /home/zw963/Dropbox/common/ruby/lib/looksee/adapter.rb:1:in `<top (required)>'
1: from /home/zw963/Dropbox/common/ruby/lib/looksee/adapter.rb:2:in `<module:Looksee>'
NameError (uninitialized constant Looksee::Adapter)
irb(main):002:0> require 'looksee/adapter'
Traceback (most recent call last):
9: from /home/zw963/.rvm/rubies/ruby-2.7.0/bin/irb:23:in `<main>'
8: from /home/zw963/.rvm/rubies/ruby-2.7.0/bin/irb:23:in `load'
7: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/irb-1.2.1/exe/irb:11:in `<top (required)>'
6: from (irb):1
5: from (irb):2:in `rescue in irb_binding'
4: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
3: from /home/zw963/others/.rvm/rubies/ruby-2.7.0/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
2: from /home/zw963/Dropbox/common/ruby/lib/looksee/adapter.rb:1:in `<top (required)>'
1: from /home/zw963/Dropbox/common/ruby/lib/looksee/adapter.rb:2:in `<module:Looksee>'
NameError (uninitialized constant Looksee::Adapter)
irb(main):003:0>
```
BTW: this issue never happen on ruby which version below 2.7.0