nvim/lua/plugins/nix.lua

return {
    {
        "nvim-lspconfig",
        opts = {
            servers = {
                nil_ls = {
                    settings = {
                        ["nil"] = {
                            formatting = {
                                command = "nixfmt",
                            },
                            nix = {
                                flake = {
                                    autoArchive = true,
                                    autoEvalInputs = true,
                                },
                            },
                        },
                    },
                },
            },
        },
    },
    {
        "dundalek/lazy-lsp.nvim",
        dependencies = { "neovim/nvim-lspconfig" },
        opts = {
            prefer_local = true,
            excluded_servers = {
                "gopls", -- gopls likes to be double attached if enabled here.
                "bazelrc-lsp",
            },
            preferred_servers = {
                gitcommit = {},
                sql = {},
                nix = {
                    "nil_ls",
                },
                typescript = {
                    "tsserver",
                },
                proto = {
                    "buf-language-server",
                },
                sh = {},
                markdown = {},
            },
        },
    },
}