Using `apt --version` doesn't work at Linux Mint

[autinerd]

Because apt works a bit different in Linux Mint, apt --version doesn't work and crashes mpm managers

Error log:

Traceback (most recent call last):
  File "/usr/local/bin/mpm", line 10, in <module>
    sys.exit(cli())
  File "/home/sidney/.local/lib/python3.6/site-packages/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "/home/sidney/.local/lib/python3.6/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/home/sidney/.local/lib/python3.6/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/sidney/.local/lib/python3.6/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/sidney/.local/lib/python3.6/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/home/sidney/.local/lib/python3.6/site-packages/click/decorators.py", line 17, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/usr/local/lib/python3.6/dist-packages/meta_package_manager/cli.py", line 212, in managers
    version_infos = OK if manager.fresh else KO
  File "/usr/local/lib/python3.6/dist-packages/boltons/cacheutils.py", line 610, in __get__
    value = obj.__dict__[self.func.__name__] = self.func(obj)
  File "/usr/local/lib/python3.6/dist-packages/meta_package_manager/base.py", line 177, in fresh
    if not self.version:
  File "/usr/local/lib/python3.6/dist-packages/boltons/cacheutils.py", line 610, in __get__
    value = obj.__dict__[self.func.__name__] = self.func(obj)
  File "/usr/local/lib/python3.6/dist-packages/meta_package_manager/base.py", line 140, in version
    if self.version_string:
  File "/usr/local/lib/python3.6/dist-packages/boltons/cacheutils.py", line 610, in __get__
    value = obj.__dict__[self.func.__name__] = self.func(obj)
  File "/usr/local/lib/python3.6/dist-packages/meta_package_manager/base.py", line 130, in version_string
    version = self.get_version()
  File "/usr/local/lib/python3.6/dist-packages/meta_package_manager/managers/apt.py", line 56, in get_version
    return output.split('\n')[0].split()[1]
IndexError: list index out of range

apt --version returns:

$ apt --version
apt
Usage: apt command [options]
       apt help command [options]

Commands:
  add-repository   - Add entries to apt sources.list
  autoclean        - Erase old downloaded archive files
  autoremove       - Remove automatically all unused packages
  build            - Build binary or source packages from sources
  build-dep        - Configure build-dependencies for source packages
  changelog        - View a package's changelog
  check            - Verify that there are no broken dependencies
  clean            - Erase downloaded archive files
  contains         - List packages containing a file
  content          - List files contained in a package
  deb              - Install a .deb package
  depends          - Show raw dependency information for a package
  dist-upgrade     - Upgrade the system by removing/installing/upgrading packages
  download         - Download the .deb file for a package
  edit-sources     - Edit /etc/apt/sources.list with your preferred text editor
  dselect-upgrade  - Follow dselect selections
  full-upgrade     - Same as 'dist-upgrade'
  held             - List all held packages
  help             - Show help for a command
  hold             - Hold a package
  install          - Install/upgrade packages
  list             - List packages based on package names
  policy           - Show policy settings
  purge            - Remove packages and their configuration files
  recommends       - List missing recommended packages for a particular package
  rdepends         - Show reverse dependency information for a package
  reinstall        - Download and (possibly) reinstall a currently installed package
  remove           - Remove packages
  search           - Search for a package by name and/or expression
  show             - Display detailed information about a package
  showhold         - Same as 'held'
  source           - Download source archives
  sources          - Same as 'edit-sources'
  unhold           - Unhold a package
  update           - Download lists of new/upgradable packages
  upgrade          - Perform a safe upgrade
  version          - Show the installed version of a package

apt version apt returns the version

$ apt version apt
1.6.11

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