Problem with Erubis

[expez]

Upon syntax checking a .erb file I get the following error:

Checker eruby-erubis returned non-zero exit code 1, but no errors from output: An exception occurred running /home/expez/.rvm/gems/rbx-head@flix/bin/ruby_executable_hooks:

    no such file to load -- compiler (LoadError)

Backtrace:

�[0;31m       Rubinius::CodeLoader#load_error at kernel/common/code_loader.rb:447�[0m
�[0;34m  Rubinius::CodeLoader#resolve_require_path at kernel/common/code_loader.rb:431�[0m
�[0;34m   { } in Rubinius::CodeLoader#require at kernel/common/code_loader.rb:103�[0m
�[0;34m                  Rubinius.synchronize at kernel/bootstrap/rubinius.rb:137�[0m
�[0;34m          Rubinius::CodeLoader#require at kernel/common/code_loader.rb:102�[0m
�[0;34m          Rubinius::CodeLoader.require at kernel/common/code_loader.rb:237�[0m
�[0;34m          Kernel(Erubis::Main)#require at kernel/common/kernel.rb:705�[0m
            Erubis::Main#check_syntax at /home/expez/.rvm/gems/rbx-head@flix
                                         /gems/erubis-2.7.0/lib/erubis
                                         /main.rb:490�[0m
               Erubis::Main#do_action at /home/expez/.rvm/gems/rbx-head@flix
                                         /gems/erubis-2.7.0/lib/erubis
                                         /main.rb:195�[0m
          { } in Erubis::Main#execute at /home/expez/.rvm/gems/rbx-head@flix
                                         /gems/erubis-2.7.0/lib/erubis
                                         /main.rb:173�[0m
�[0;34m                            Array#each at kernel/bootstrap/array.rb:66�[0m
                 Erubis::Main#execute at /home/expez/.rvm/gems/rbx-head@flix
                                         /gems/erubis-2.7.0/lib/erubis
                                         /main.rb:168�[0m
                    Erubis::Main.main at /home/expez/.rvm/gems/rbx-head@flix
                                         /gems/erubis-2.7.0/lib/erubis
                                         /main.rb:43�[0m
                    Object#__script__ at /home/expez/.rvm/gems/rbx-head@flix
                                         /gems/erubis-2.7.0/bin/erubis:10�[0m
�[0;34m                   Kernel(Object)#load at kernel/common/kernel.rb:447�[0m
             { } in Object#__script__ at /home/expez/.rvm/gems/rbx-head@flix/bin
                                         /erubis:23�[0m
�[0;34m Rubinius::BlockEnvironment#call_on_instance at kernel/common
                                                /block_environment.rb:53�[0m
�[0;34m                   Kernel(Object)#eval at kernel/common/eval.rb:176�[0m
                    Object#__script__ at /home/expez/.rvm/gems/rbx-head@flix/bin
                                         /ruby_executable_hooks:15�[0m
�[0;34m      Rubinius::CodeLoader#load_script at kernel/delta/code_loader.rb:66�[0m
�[0;34m      Rubinius::CodeLoader.load_script at kernel/delta/code_loader.rb:152�[0m
�[0;34m               Rubinius::Loader#script at kernel/loader.rb:649�[0m
�[0;34m                 Rubinius::Loader#main at kernel/loader.rb:831�[0m

Checker definition probably flawed.

It looks like Erubis is called correctly but a require statement during execution fails?

[swsnr]

You seem to be using RVM. Did you setup Emacs to use your RVM environment?

[expez]

  (rvm-activate-corresponding-ruby)

in my ruby-mode-hook. rvm--current-ruby is set to "rbx-head". It looks to me like this part is working correctly as the stacktrace indicates that the erubis that is used is the one for the correct gemset.

[swsnr]

@expez I have no idea then. I do not use Ruby, and have no clue of its inner workings.

@yasuyk Can you comment?

[expez]

The problem is with erubis itself. The latest version, version 2.7, is from 2011. In the Ruby world where stuff changes just for the sake of novelty that's a long time. If anyone stumbles upon this problem here's the diff that solved it:

diff -u -L /home/expez/.rvm/gems/rbx-head\@flix/gems/erubis-2.7.0/lib/erubis/main.rb -L \#\<buffer\ main.rb\> /home/expez/.rvm/gems/rbx-head\@flix/gems/erubis-2.7.0/lib/erubis/main.rb /tmp/buffer-content-15168ngi
--- /home/expez/.rvm/gems/rbx-head@flix/gems/erubis-2.7.0/lib/erubis/main.rb
+++ #<buffer main.rb>
@@ -487,12 +487,12 @@

     if defined?(RUBY_ENGINE) && RUBY_ENGINE == "rbx"
       def check_syntax(filename, src)
-        require 'compiler'
+        require 'rubinius/compiler'
         verbose = $VERBOSE
         msg = nil
         begin
           $VERBOSE = true
-          Rubinius::Compiler.compile_string(src, filename)
+          Rubinius::ToolSet.current::TS::Compiler.compile_string(src, filename)
         rescue SyntaxError => ex
           ex_linenum = ex.line
           linenum = 0

I also had to install the rubinius-compiler gem.

I tried looking for another erb syntax checker, but couldn't find one. Does others exist, @yasuyk? I think Flycheck should have checkers that work out of the box for all the major ruby implementations (MRI, JRuby and Rubinius)

[yasuyk]

@expez Hi,

AFAIK, there is no other erb syntax checker. IMO, It is the bug of erubis, so erubis should fix it.

[yasuyk]

By the way, why doesn't anyone send above patch to erubis?

[yasuyk]

@expez @lunaryorn I have to go to work from now. I will participate in this discussion again after half a day. Sorry.

[swsnr]

@yasuyk Take all the time you need.

[expez]

Pull request with fix opened here: kwatch/erubis#3

The tests for erubis are failing when I run them on ruby 2.1.1, so I'm guessing this software is no longer maintained.

[yasuyk]

@lunaryorn @expez I got home!

@expez Great! Thank you for sending a patch.

[expez]

@yasuyk I still can't get erubis to work. Should I use it through rvm, and install it as a gem dependency in my project, or as a global gem?

[yasuyk]

@expez You use rubinius with rvm, right? I always use CRuby with rbenv, and I have never used rubinius or rvm. I will try to reproduce it with rubinius and rvm.

[expez]

@yasuyk I got it working, I was having some troubles with rvm. Thanks for your help!

[yasuyk]

@expez I glad to hear that!

[mijoharas]

hi @expez, how did you sort your problem out? I have a similar problem with MRI (I sometimes use rubinius too though) and I use RVM as well:

Checker eruby-erubis returned non-zero exit code 1, but no errors from output: /home/michael/.rvm/rubies/ruby-2.1.0/lib/ruby/site_ruby/2.1.0/rubygems/dependency.rb:298:in `to_specs': Could not find 'erubis' (>= 0) among 16 total gem(s) (Gem::LoadError)
    from /home/michael/.rvm/rubies/ruby-2.1.0/lib/ruby/site_ruby/2.1.0/rubygems/dependency.rb:309:in `to_spec'
    from /home/michael/.rvm/rubies/ruby-2.1.0/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_gem.rb:53:in `gem'
    from /home/michael/.rvm/gems/ruby-2.1.0/bin/erubis:22:in `<main>'
    from /home/michael/.rvm/gems/ruby-2.1.0/bin/ruby_executable_hooks:15:in `eval'
    from /home/michael/.rvm/gems/ruby-2.1.0/bin/ruby_executable_hooks:15:in `<main>'

and similarly, I have tried inserting a hook for ruby mode such as:

(add-hook 'ruby-mode-hook
          (lambda () (rvm-activate-corresponding-ruby)))

Any advice on how you managed to resolve the problem would be greatly appreciated.

[mijoharas]

Also, I suspect it is some kind or rvm issue, but as far as I can tell I have it correctly configured, but I definitely have more than 16 gems, does anyone have any idea how I would be able to test where this is trying to search for dependencies?
The paths (from which the code is called) seem to be correct though...

[mijoharas]

adding these to my emacs file seems to have fixed it (as far as I can tell), so I assume I had rvm misconfigured in my emacs, thanks again for a great package.

(require 'rvm)
(rvm-use-default)