Input Methods (Fcitx & IBus)

MocaccinoOS supports complex text input for Chinese, Japanese, Korean, and other languages via the unified layers/input layer, which bundles both the Fcitx and IBus input method frameworks along with their engines and integration modules.

Install

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luet install layers/input

This single layer installs both frameworks and all their engines: Fcitx:

• Fcitx5 core and configuration tool
• Chinese input engines and tables (fcitx-chinese-addons, fcitx-table-extra)
• Anthy engine for Japanese input
• GTK and Qt integration modules
• libime and OpenCC support (Simplified/Traditional Chinese conversion) IBus:
• IBus framework
• Hangul input (ibus-hangul, libhangul)
• Pinyin input (ibus-pinyin)
• Anthy engine for Japanese input (ibus-anthy)
• Table-based input methods (ibus-table, ibus-table-chinese, ibus-table-others) Both frameworks share the same underlying libraries (xcb-imdkit, opencc, marisa, libime).

Choosing a Framework

Both Fcitx and IBus are installed by the same layer. You only need to activate one at a time in your desktop settings.

Enabling in KDE Plasma

1. Open System Settings → Input Devices → Virtual Keyboard
2. Select Fcitx or IBus
3. Log out and log back in On Plasma Wayland sessions, Fcitx is usually detected automatically after installation.

Configuring Fcitx

Run the Fcitx configuration tool to add input methods (e.g. Pinyin, Anthy, Hangul, Table):

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fcitx-configtool

Environment variables (non-Plasma or X11)

When using a login manager such as LightDM to start the X server, add the following to ~/.xprofile:

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export XMODIFIERS="@im=fcitx"
export GTK_IM_MODULE=fcitx
export QT_IM_MODULE=fcitx

Log out and back in after making changes.

Configuring IBus

Run the IBus setup tool to add input methods (e.g. Hangul, Pinyin, Table):

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ibus-setup

Environment variables (non-Plasma or X11)

When using a login manager such as LightDM to start the X server, add the following to ~/.xprofile:

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export XMODIFIERS="@im=ibus"
export GTK_IM_MODULE=ibus
export QT_IM_MODULE=ibus

Log out and back in after making changes.

Notes

• Both frameworks work in X11 and Wayland sessions
• OpenCC enables Simplified/Traditional Chinese conversion (Fcitx)
• The layer contains runtime components only, consistent with MocaccinoOS design
• layers/input requires layers/kde-common as a dependency

References

• https://wiki.gentoo.org/wiki/Fcitx