function check_install -a tool -a package

if test (count $argv) -lt 1
  return 1
end

if command -sq $tool
  return 0
end

if not ask "$tool doesn't seem to be installed. Attempt to install it?"
  return 1
end

if test -z $package
  set package $tool
end

pkgadd $package || return 1

if not command -sq $tool
  return 1
end

return 0

end