How to combine custom pickers ?

[teto]

thank you so much for the recent "combine" which allows us ot create "palette" like all other editors (sublimetext, vscode, I hope someone revives the spirit of https://github.com/teto/nvim-palette xD).

I would like to combine builtins pickers with one of my own (a jujutsu picker, a VCS like git).
:h fzf-lua-combining-pickers shows how to do it with the picker names.

Looking at the code fzf-lua looks for pickers in _G.FzfLua . Should I add it myself, or is there a helper like "register_picker" for instance ? Alternatively, could I pass lua functions to the picker ?
Here is my custom picker (a copy/paste of git_files with few changes to work for jujutsu):
https://github.com/teto/home/blob/e33fee6aa35d72e3d91894ee996babf5f1bfe614/config/nvim/lua/teto/fzf-lua/providers/jj.lua#L97C3-L97C8

[ibhagwan]

Use FzfLua.register_extension, see an example in fzf-lua-frecency:
https://github.com/ibhagwan/fzf-lua-frecency.nvim/blob/e2b398fe071b7ea1b48e0f9628d63f3ad9d4f158/lua/fzf-lua-frecency/init.lua#L37

You can then make a custom global picker (or combine, whichever you prefer): elanmed/fzf-lua-frecency.nvim#19

[teto]

thanks that worked