Install Vim 7.3 on MacOSX Lion

iVim.rb

separator = String.new
8.times { separator += '-' }
separator = "\n" + separator + "\n"

def newblock(text)
	puts "\n#{separator}" + text + + "#{separator}\n"
end

newblock "Prerequisites (iconv)"
if not system("which iconv")
	puts "You have to install `libicon` (http://www.gnu.org/software/libiconv/), first."
	exit
end


newblock "Ensure that the right version of Ruby (1.8.7) is set"
if system('type -a rvm')
	system "rvm use system"
end

newblock "CD to `/tmp/`"
system "cd /tmp/"

newblock "Get Vim through CURL"
system "curl ftp://ftp.vim.org/pub/vim/unix/vim-7.3.tar.bz2 | tar -xz"

system "cd vim73"

newblock "Start configure"
system "./configure --enable-pythoninterp --enable-rubyinterp --enable-perlinterp --enable-gui --enable-multibyte"

if `uname -m`.include? "x86_64"
	newblock "Your achitecture is x86_64. Set `config.mk` to handle this information."
	config = File.read("#{Dir.pwd}/src/auto/config.mk")
	r = config.gsub(/.*LDFLAGS.*/,"LDFLAGS = -L. -arch x86_64 -L/usr/local/lib")
	File.open("#{Dir.pwd}/src/auto/config.mk", "w") { |file| file.puts r }
end

newblock "Make"
system "make && make install"

newblock "Old Vim symlink moved to /usr/bin/vim.old"
system "sudo mv /usr/bin/vim /usr/bin/vim.old"
system "sudo ln -s /usr/local/bin/vim /usr/bin/vim"