RVM and Ruby package requirements

[flebber]

Just a very basic question for the advanced section.

In the print out documentation for rvm after install it lists apt-get requirements for ruby to run.

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# For Ruby (MRI & ree)  you should install the following OS dependencies:
  ruby: /usr/bin/apt-get install build-essential bison openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-0 libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev

# For JRuby (if you wish to use it) you will need:
  jruby: /usr/bin/apt-get install curl g++ openjdk-6-jre-headless
  jruby-head: /usr/bin/apt-get install ant openjdk-6-jdk
Most of the requirements for ruby really don't seem to matter as I ignored them and ruby 1.8.7 & ruby 1.9.2 are working anyway, bonus. However Jruby fails to install via rvm .

Code: [Select]

# For Ruby (MRI & ree)  you should install the following OS dependencies:
  ruby: /usr/bin/apt-get install build-essential bison openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-0 libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev

# For JRuby (if you wish to use it) you will need:
  jruby: /usr/bin/apt-get install curl g++ openjdk-6-jre-headless
  jruby-head: /usr/bin/apt-get install ant openjdk-6-jdk
Would this error be as a result of dependencies build-essential or jre-headless? Something else?