Neovim looks for a directory called lua with a file called
<library-name>.[so|dylib] so when you build, run
mkdir lua
cargo build
cp ./target/debug/libned.so ./lua/ned.so
Then, inside of neovim, set the runtime path to include ned, by running
vim.opt.runtimepath:append("<path to ned on your system")
You can run this either in EX mode (by hitting : while inside neovim, but
remember to prepend lua to the above command)
OR
In any lua file you already load when neovim starts.
Then, inside your running Neovim instance, you can run require("ned").
You can run AND print lua code from EX mode by prefixing with :=
e.g
:=require("ned")
You don't need to use Lazy as a package manager to use these steps above, I just use it here as an automatic to include a lua file when I'm in this directory