# BUG: undefined method \`prepend\_environment\_path' for GLib:Module

**URL:** <https://www.ruby-forum.com/t/bug-undefined-method-prepend-environment-path-for-glib-module/228217>\
**Category:** Ruby-Gnome 2\
**Created:** [April 13, 2013, 3:36pm UTC](https://www.ruby-forum.com/t/bug-undefined-method-prepend-environment-path-for-glib-module/228217 "2013-04-13T15:36:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Detlef\_R](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/58f4c7/32.png) [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\
**Post date:** [April 13, 2013, 3:36pm UTC](https://www.ruby-forum.com/t/bug-undefined-method-prepend-environment-path-for-glib-module/228217/1 "2013-04-13T15:36:53Z")

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Hi,

with the last changes a bug in glib2 was introduced. With a fresh  
installation you get this error:

irb(main):001:0\> require ‘gtk2’  
NoMethodError: undefined method `prepend_environment_path' for GLib:Module from /usr/local/lib/site_ruby/1.9.1/gtk2/base.rb:20:in`\<top  
(required)\>’  
from /usr/lib/ruby/1.9.1/rubygems/custom\_require.rb:36:in `require' from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in`require’  
from /usr/local/lib/site\_ruby/1.9.1/gtk2.rb:11:in `<top (required)>' from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in`require’  
from /usr/lib/ruby/1.9.1/rubygems/custom\_require.rb:36:in `require' from (irb):1 from /usr/bin/irb:12:in`’

Cheers detlef

---

<div class="post-metadata">

**Author:** ![Detlef\_R](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/58f4c7/32.png) [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\
**Post date:** [April 13, 2013, 4:35pm UTC](https://www.ruby-forum.com/t/bug-undefined-method-prepend-environment-path-for-glib-module/228217/2 "2013-04-13T16:35:55Z")

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Hi,

In [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
“[ruby-gnome2-devel-en] BUG: undefined method  
`prepend\_environment\_path’ for GLib:Module” on Sat, 13 Apr 2013 15:35:58  
+0200,  
Detlef R. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> from /usr/local/lib/site\_ruby/1.9.1/gtk2.rb:11:in `<top (required)>' from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require’  
> from /usr/lib/ruby/1.9.1/rubygems/custom\_require.rb:36:in `require' from (irb):1 from /usr/bin/irb:12:in `’

Thanks for your report.  
I’ve fixed it. 🙂

## Thanks,

kou