Helix file picker with lf

In $HOME/dot/.config/helix/config.toml

[keys.normal]
C-f = [":new", ":insert-output lf -selection-path=/dev/stdout", "split_selection_on_newline", "goto_file", "goto_last_modification", "goto_last_modified_file", ":buffer-close!", ":redraw"]

Requires only lf installed.