uim-gtk3-immodule binary package in Ubuntu Jammy amd64

 Uim is an input method module library which supports various scripts and can
 act as a front end for a range of input methods, including Anthy, Canna,
 PRIME, or SKK (for Japanese), Pinyin (for Chinese), Byeoru (for Korean), and
 M17n (for many other languages). Most of its functions are implemented in
 Scheme, so it's very simple and flexible.
 .
 This package contains an IM-module to support the use of uim on GTK+3.0
 applications.

Source package