none-ls is available at https://luarocks.org/modules/mochaap/none-ls.nvim .

I have some trouble with my none-ls version so I thought I would try a tagged stable version supposed to work to see if that was because I run a too recent version. Knowing that this tag works with neovim 0.11 and have the possibility to pin and go back to that is nice.
Alternatively I could use git directly but I like rockspecs with its automated dependencies handing.