About 100 MB will be added if main stream input methods are supported in Whonix. Is this acceptable?
user@chinese-im:~$ sudo apt-get install --no-install-recommends im-config ibus-pinyin ibus-anthy ibus-hangul ibus-unikey Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: anthy anthy-common dconf-cli gir1.2-ibus-1.0 ibus libanthy0 libhangul-data libhangul1 libibus-1.0-5 liblua5.1-0 libpyzy-1.0-0v5 Suggested packages: ibus-clutter ibus-doc ibus-qt4 Recommended packages: kasumi The following NEW packages will be installed: anthy anthy-common dconf-cli gir1.2-ibus-1.0 ibus ibus-anthy ibus-hangul ibus-pinyin ibus-unikey im-config libanthy0 libhangul-data libhangul1 libibus-1.0-5 liblua5.1-0 libpyzy-1.0-0v5 0 upgraded, 16 newly installed, 0 to remove and 3 not upgraded. Need to get 21.6 MB of archives. After this operation, 90.8 MB of additional disk space will be used.