dotfiles/users/ludovico/config/neovim/lua/cmp.lua

local cmp = require("cmp")
cmp.setup(
  {
    experimental = {
      ghost_text = true
    },
    snippet = {
      expand = function(args)
        require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
      end
    },
    window = {
      completion = cmp.config.window.bordered(),
      documentation = cmp.config.window.bordered(),
    },
    mapping = cmp.mapping.preset.insert(
      {
        ["<C-k>"] = cmp.mapping.scroll_docs(-4),
        ["<C-j>"] = cmp.mapping.scroll_docs(4),
        ["<C-Space>"] = cmp.mapping.complete(),
        ["<C-e>"] = cmp.mapping.abort(),
        ["<CR>"] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
        ["<Tab>"] = cmp.mapping(
          function(fallback)
            local col = vim.fn.col(".") - 1

            if cmp.visible() then
              cmp.select_next_item(select_opts)
            elseif col == 0 or vim.fn.getline("."):sub(col, col):match("%s") then
              fallback()
            else
              cmp.complete()
            end
          end,
          { "i", "s" }
        )
      }
    ),
    sources = cmp.config.sources(
      {
        { name = "nvim_lsp" },
        { name = "luasnip" }
      },
      {
        { name = "buffer" }
      }
    )
  }
)

-- Set configuration for specific filetype.
cmp.setup.filetype(
  "gitcommit",
  {
    sources = cmp.config.sources(
      {
        { name = "cmp_git" } -- You can specify the `cmp_git` source if you were installed it.
      },
      {
        { name = "buffer" }
      }
    )
  }
)

-- Use buffer source for `/` and `?` (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline(
  { "/", "?" },
  {
    mapping = cmp.mapping.preset.cmdline(),
    sources = {
      { name = "buffer" }
    }
  }
)

-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline(
  ":",
  {
    mapping = cmp.mapping.preset.cmdline(),
    sources = cmp.config.sources(
      {
        { name = "path" }
      },
      {
        { name = "cmdline" }
      }
    )
  }
)

-- lsp-format
require("lsp-format").setup {}
local on_attach = function(client)
  require("lsp-format").on_attach(client)
end

local caps = vim.tbl_extend(
  'keep',
  vim.lsp.protocol.make_client_capabilities(),
  require('cmp_nvim_lsp').default_capabilities()
);

-- Set up lspconfig.
local capabilities = require("cmp_nvim_lsp").default_capabilities()
require('lspconfig')["nil_ls"].setup {
  on_attach = on_attach,
  capabilities = capabilities,
  settings = {
    ['nil'] = {
      testSetting = 42,
      formatting = {
        command = { "alejandra" },
      },
    },
  },
}
require("lspconfig")["rust_analyzer"].setup {
  on_attach = on_attach,
  capabilities = capabilities
}
require("lspconfig")["zk"].setup {
  on_attach = on_attach,
  capabilities = capabilities
}
require("lspconfig")["lua_ls"].setup {
  on_attach = on_attach,
  capabilities = capabilities
}