"mutate" is unknown vagrant command after plugin install

[muelli]

I've installed the plugin (vagrant plugin install mutate vagrant-libvirt vagrant-proxyconf) and tried to follow the instructions, which say "The basic usage is vagrant mutate box-name-or-file-or-url output-provider", but it doesn't recognise mutate as a valid command.

muelli@cloudbox:~$ vagrant plugin list
mutate (1.0.0)
vagrant-libvirt (0.0.30)
vagrant-proxyconf (1.5.1)
muelli@cloudbox:~$ vagrant --version
Vagrant 1.7.4
muelli@cloudbox:~$ vagrant mutate http://files.vagrantup.com/precise64.box libvirt
Usage: vagrant [options] <command> [<args>]

[sciurus]

You get that error because you didn't install vagrant-mutate, you installed mutate. You need to run vagrant plugin install vagrant-mutate.