feat(nvim): enable inlay hints

default.nix

@@ -56,6 +56,7 @@ in
       cmp-conventionalcommits
       cmp-calc
       rustaceanvim
+      lsp-inlayhints-nvim # https://github.com/mrcjkb/rustaceanvim/discussions/46#discussioncomment-7620822
       plenary-nvim
       crates-nvim
       nvim-lspconfig

init.lua

@@ -126,5 +126,6 @@ vim.api.nvim_create_autocmd('LspAttach', {
                        function() vim.lsp.buf.format {async = true} end, opts)
     end
 })
+require("lsp-inlayhints").setup()
 require("completion")
 require("rust")

rust.lua

@@ -116,7 +116,8 @@ vim.g.rustaceanvim = {
         standalone = true,
         cmd = {(deps.rust_analyzer_path .. "/bin/rust-analyzer")},
         capabilities = require("cmp_nvim_lsp").default_capabilities(c),
-        on_attach = function(_, bufnr)
+        on_attach = function(client, bufnr)
+	    require("lsp-inlayhints").on_attach(client, bufnr)
 	    require('crates').setup()
             local keymap_opts = {buffer = bufnr}
             -- Hover actions