How to change rubygems platform from x86-mingw32 to x86-mswin32-60 on windows

windows ruby rubygems platform
Boris picture Boris · Jul 17, 2010 · Viewed 7.5k times · Source

I am doing some ruby scripting in windows, which involves opening and closing a browser. To that end I needed some special gems to interface to the native windows system calls. But when I tried

> gem install sys-proctable

, it yielded

ERROR: Could not find a valid gem ´sys-proctable´ (>= 0), here is why: 
          Found sys-proctable (0.9.0), but was for platforms x86-darwin-8 
            ,x86-freebsd-7 ,x86-solaris-2.10 ,x86-linux ,x86-mswin32-60

The problem is that my gem installation does not have the x86-mswin32-60 rubygems platform

> gem environment
RubyGems Environment:
  - RUBYGEMS VERSION: 1.3.7
  - RUBY VERSION: 1.8.7 (2010-01-10 patchlevel 249) [i386-mingw32]

  ...

  - RUBYGEMS PLATFORMS:
    - ruby
    - x86-mingw32

  ...

It seems that the problem comes from my version of ruby being compiled with mingw libraries. So my question is: how can I get a version of ruby, where rubygems platforms include x86-mswin32-60? I cannot find any installers from rubyinstaller.org which are not mingw.

--- edit ---

That last part was a bit hasty. Actually, rubyinstaller.org has the legacy one-click installers, which were built for mswin32. But that install had some other problems for me, so I guess I will try the solution from Luis below.

Answer

Luis Lavena picture Luis Lavena · Jul 18, 2010

You can force the gem installation specifying --platform option:

gem install sys-proctable --platform=x86-mswin32-60

However, I advise against it for several reasons, some I've mentioned in my blog here

Please test first and see if it will work before pushing a code that is based on this into a production environment.

Hope that helps.

Related questions

Ruby 2.0.0p0 IRB warning: "DL is deprecated, please use Fiddle"

I just uninstalled my older versions of Ruby, removed all of my gems (including Rails), and installed Ruby 2.0. In other words, a totally clean re-install. Upon starting IRB, I received this message: DL is deprecated, please use Fiddle Note: I'm …

Read More
Error installing libv8: ERROR: Failed to build gem native extension

I made a rails project with, rails new test_bootstrap. succeeded. moved to the project dir and added the gems gem "therubyracer" gem "less-rails" #Sprockets (what Rails 3.1 uses for its asset pipeline) supports LESS gem "twitter-bootstrap-rails" and run bundle install …

Read More
How can we watch the Rails development log?

A member of my team is developing a Rails app on Windows XP. We are finding that when we run the app, either launching it within NetBeans or by opening a console and calling script/server, the Rails development log …

Read More