cmp-nvim-ultisnips VS ddc.vim

I didn't know lsp-zero, but this integration seems just for me except for that I am using UltiSnips instead of luasnip. Just curious how difficult do you think it is to add UltiSnips integration along with cmp-nvim-ultisnips?

For cmp you will need the autocompletion engine and the sources to use. Sources are plugins for cmp that will populate the popup menu with items from different contexts, like from nvim-lsp, ultisnips, vsnip, etc. So you will need to install nvim-cmp along with sources like nvim-lsp source and ultisnips source. Finally, you will need the setup() function to add the expansion trigger, list the sources, add mappings, etc. You will just have to read the docs on the README in the repo for some example code. Unfortunately, those examples are not great to copy/paste if you have no clue what it's doing.

cmp-nvim-ultisnips

Have a look at ddc.vim and denops.vim

There is shougo/ddc.vim by the same author

e.g:https://github.com/Shougo/ddc.vim

I use dense-analysis/Ale for code linting. Lately, I moved to update my tab completion from deoplete to Shougo/ddc.vim; the autocompletion of Ale is routed to ddc using statiolake/ddc-ale but the Ale autocomplete leaves things to be desired.

I was looking at ddc.vim and it looked somewhat similar to nvim-cmp. There's also multiple sources for it with no inbuilt ones. So, I was wondering if anyone has used both of them and could provide some pointers on a rough comparison between the both. Also, if there's any config file with sources for lsp, buffer, and other useful ones already setup, then could you share that too?

Sadly deoplete doesn't play well with 'some' asynchronous plugin sources (ex: vim-iced). I still got to try ddc.vim to see if things are easier and if middle word completion is done right.