Created
November 12, 2011 21:31
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Using rvm with tcsh
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#!/usr/bin/env ruby | |
# riffing on a tune by Paul at po-ru.com | |
# 1. Using a bash shell, install rvm according to instructions. | |
# 2. Install this script in your path, say in ~/bin. | |
# 3. Make it executable. | |
# 4. Add the following alias to your .tcshrc: | |
# alias rvm 'eval `~/bin/rvm.rb \!*`' | |
# 5. Use and enjoy rvm in your tcsh | |
# Note that this script relies on a ruby already installed in the path. | |
# It shouldn't be too hard to enhance it to bootstrap itself using rvm. | |
require 'yaml' | |
rvm_home="#{ENV['HOME']}/.rvm" | |
rvm_command="source #{rvm_home}/scripts/rvm; rvm #{ARGV.join(' ')}" | |
tmpfile= "/tmp/rvm#{$$}.yml" | |
tmpecho= "/tmp/rvm#{$$}.txt" | |
outcmds = "" | |
if ARGV[0] == "use" | |
output = `bash -c \"#{rvm_command} && rvm info > #{tmpfile}\"` | |
info = YAML.load(File.open(tmpfile,'r')) | |
#info is a hash with a single key: the current ruby version. | |
# we want the hash that is the value of that key, | |
# and in that hash we want the environment hash. | |
env = info.shift[1]["environment"] | |
env.each do |key,val| | |
next if val.empty? | |
outcmds << "setenv #{key} \"#{val}\";" | |
end | |
# hack because ruby version is not available in 'rvm info' | |
ruby_version = File.basename(env["MY_RUBY_HOME"]) | |
outcmds << "setenv RUBY_VERSION \"#{ruby_version}\";" | |
`rm -f #{tmpfile}` | |
# assume output of 'rvm use' is a single line with no special chars | |
outcmds << "echo \'#{output.chomp}\'" | |
else | |
# workaround for tcsh problem eval'ing echo commands containing special chars. | |
`bash -c "#{rvm_command} > #{tmpecho}"` | |
outcmds = "cat #{tmpecho}; rm #{tmpecho}" | |
end | |
puts outcmds |
OK I've fixed it. Thanks. It probably worked the other way for me because MacOSX filesystem is case-agnostic.
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Unfortunately this requires YAML, which means I see this:
/home/dave/bin/rvm.rb:15:in `require': no such file to load -- YAML (LoadError)
from /home/dave/bin/rvm.rb:15
I'm pretty sure you want:
require 'yaml'