rvm

I'm running into issues trying to install Rails on OS X Lion using RVM. So far, I have done the following: Installed Mac OS X Lion Version 10.7 (Build 11A459e). Installed XCode 4.1 Developer Preview 5. Installed RVM. Installed a 1.8.7 version of Ruby via RVM using the command rvm install 1.8.7 . Note: I need to be using 1.8.7 and not 1.9.2. Switched to the 1.8.7 version of Ruby using the command rvm 1.8.7 . Created a new gemset using the command rvm gemset create rails3 . Switched to the new gemset using the command rvm use 1.8.7@rails3 . To install Rails I ran the command gem install rails

I want to switch between rails 2.3.10 as the "active" gem for my OS, so that I can invoke it at the command line. Is it possible to do this? I'm not using rvm. Maybe it's time to start. I tried gem install rails --version=2.3.10 , but that just makes sure that version of the gem is installed, it doesn't put it in /usr/bin/rails . (I do already use bundler for my apps -- but haven't needed any precise control over gems at the OS level until now) If your problem is to run binaries of a certain version, then: rails --version # => the latest version rails _2.3.10_ --version # => Rails 2.3.10 This

I use RVM, the Ruby Version Manager to specify a Ruby version and a set of gems for each of my Rails projects. I have a .rvmrc file to automatically select a Ruby version and gemset whenever I cd into a project directory. After installing RVM 1.19.0, I get a message You are using .rvmrc , it requires trusting, it is slower and it is not compatible with other ruby managers, you can switch to .ruby-version using rvm rvmrc to [.]ruby-version or ignore this warnings with rvm rvmrc warning ignore /Users/userName/code/railsapps/rails-prelaunch-signup/.rvmrc , .rvmrc will continue to be the default

I get the error shown below when attempting to install the rmagick gem. I am on Snowleopard 10.6 using RVM, Ruby 1.9.2-head and Rails 3.05. Responses to similar questions recommended installing ImageMagick, which I successfully did. Other suggested installing the "libmagick9-dev library", however, I can not figure out how to do this. I'm a new developer, and any assistance or directions to an existing explanation or resource is greatly appreciated. Thanks! jjdevenuta(opal)$ gem install rmagick Fetching: rmagick-2.13.1.gem (100%) Building native extensions. This could take a while... ERROR:

I used rvm to install ruby 1.9.3. even though it was successfully installed, it complained about libyaml. and now every time i wanna install a gem (say rails) this warning shows up: It seems your ruby installation is missing psych (for YAML output). To eliminate this warning, please install libyaml and reinstall your ruby. I use Mac os X 10.7 (Lion). peterpengnz In my case rvm pkg install libyaml and rvm reinstall ruby-1.9.3-p125 solved the problem. For people using Ubuntu, make sure that libtool is installed prior to the steps above: sudo apt-get install libtool For macOS users (with homebrew