(advice-add 'diff-hl-overlay-modified :override #'ignore)
(advice-add 'diff-hl-modified-p :before-until
#'diff-hl-flydiff/modified-p)
(advice-add 'diff-hl-changes-buffer :override
#'diff-hl-flydiff-buffer-with-head)
(advice-add 'diff-hl-overlay-modified :override #'ignore)
(advice-add 'diff-hl-modified-p :before-until
#'diff-hl-flydiff/modified-p)
(advice-add 'diff-hl-changes-buffer :override
#'diff-hl-flydiff-buffer-with-head)