let samblaster =
let binary = "samblaster" in
Installable_tool.make
Machine.Tool.Default.samblaster
~url:"https://github.com/GregoryFaust/samblaster/releases/download/v.0.1.22/samblaster-v.0.1.22.tar.gz"
~install_program:(make_and_copy_bin binary)
~init_program:add_to_dollar_path
~witness:(witness_file binary)