dotfiles/modules/common/neovim/config/lsp.nix

{ pkgs, dsl, ... }: {

  plugins = [
    pkgs.vimPlugins.nvim-lspconfig
    pkgs.vimPlugins.lsp-colors-nvim
    pkgs.vimPlugins.null-ls-nvim
  ];

  use.lspconfig.lua_ls.setup = dsl.callWith {
    settings = { Lua = { diagnostics = { globals = [ "vim" "hs" ]; }; }; };
    capabilities = dsl.rawLua "require('cmp_nvim_lsp').default_capabilities()";
    cmd = [ "${pkgs.lua-language-server}/bin/lua-language-server" ];
  };

  use.lspconfig.nil_ls.setup = dsl.callWith {
    cmd = [ "${pkgs.nil}/bin/nil" ];
    capabilities = dsl.rawLua "require('cmp_nvim_lsp').default_capabilities()";
  };

  use.lspconfig.pyright.setup = dsl.callWith {
    cmd = [ "${pkgs.pyright}/bin/pyright-langserver" "--stdio" ];
  };

  use.lspconfig.terraformls.setup =
    dsl.callWith { cmd = [ "${pkgs.terraform-ls}/bin/terraform-ls" "serve" ]; };

  vim.api.nvim_create_augroup = dsl.callWith [ "LspFormatting" { } ];

  lua = ''
    ${builtins.readFile ./lsp.lua}

    require("null-ls").setup({
        sources = {
            require("null-ls").builtins.formatting.stylua.with({ command = "${pkgs.stylua}/bin/stylua" }),
            require("null-ls").builtins.formatting.black.with({ command = "${pkgs.black}/bin/black" }),
            require("null-ls").builtins.diagnostics.ruff.with({ command = "${pkgs.ruff}/bin/ruff" }),
            require("null-ls").builtins.formatting.fish_indent.with({ command = "${pkgs.fish}/bin/fish_indent" }),
            require("null-ls").builtins.formatting.nixfmt.with({ command = "${pkgs.nixfmt}/bin/nixfmt" }),
            require("null-ls").builtins.formatting.rustfmt.with({ command = "${pkgs.rustfmt}/bin/rustfmt" }),
            require("null-ls").builtins.diagnostics.shellcheck.with({ command = "${pkgs.shellcheck}/bin/shellcheck" }),
            require("null-ls").builtins.formatting.shfmt.with({
                command = "${pkgs.shfmt}/bin/shfmt",
                extra_args = { "-i", "4", "-ci" },
            }),
            require("null-ls").builtins.formatting.terraform_fmt.with({
                command = "${pkgs.terraform}/bin/terraform",
                extra_filetypes = { "hcl" },
            }),
        },

        on_attach = function(client, bufnr)
            if client.supports_method("textDocument/formatting") then
                -- Auto-format on save
                vim.api.nvim_clear_autocmds({ group = augroup, buffer = bufnr })
                vim.api.nvim_create_autocmd("BufWritePre", {
                    group = augroup,
                    buffer = bufnr,
                    callback = function()
                        vim.lsp.buf.format({ bufnr = bufnr })
                    end,
                })
                -- Use internal formatting for bindings like gq.
                vim.api.nvim_create_autocmd("LspAttach", {
                    callback = function(args)
                        vim.bo[args.buf].formatexpr = nil
                    end,
                })
            end
        end,
    })
  '';

}