Resquire

require "resquire"

# you can add gems when you create a new analyzer, as an array
analyzer = Resquire::Analyzer.new(:gems => ['colorize', 'packetfu', 'lolize'])

# you can also add gems individually
analyzer.add_gem('pcaprub')
# => true

# or as an array
analyzer.add_gems(['ipaddr', 'socket', 'thread'])
# => true

# we can check which gems the analyzer has to work with
analyzer.gems
# => ["colorize", "packetfu", "lolize", "pcaprub", "ipaddr", "socket", "thread"]

# quickly check ammount of permutations ( to see wtf we're about to get outselves into )
# no, srsly, like, you can easily have 20 gems; and that's 2,432,902,008,176,640,000 permutations dog, fo real 
# you can try splitting them up into smaller batches of roughly ~13
analyzer.permutations
# => 5040

# you can get an array of the redundant gems
analyzer.redundant_gems
# => ["pcaprub", "ipaddr", "socket", "thread"]

# you can choose not to shuffle the permutated array, may be better for larger gem groups
# since we're not pre-generating the permutations -- we're simply looping through the
# possibilities via an enumerator.
# true by default, since I find it to be generally nicer
analyzer.redundant_gems(:shuffle => false) 
# => ["pcaprub", "ipaddr", "socket", "thread"]

# you can also choose to to display a small progresss indicator or not
# true by default, since I find it to be generally faster
analyzer.redundant_gems(:progress_bar => false) 
# => ["pcaprub", "ipaddr", "socket", "thread"]

# or the new optimized gem listing as an array with the redundancies
# these would be the gems you'd want to require in your application now
analyzer.optimized_gems
# => ["colorize", "lolize", "packetfu"]