{ pkgs, config, lib, ... }: with lib; with builtins; let cfg = config.vim.languages.go; defaultServer = "gopls"; servers = { gopls = { package = pkgs.gopls; lspConfig = '' lspconfig.gopls.setup { capabilities = capabilities; on_attach = default_on_attach; cmd = {"${cfg.lsp.package}/bin/gopls", "serve"}, } ''; }; }; defaultDebugger = "delve"; debuggers = { delve = { package = pkgs.delve; dapConfig = '' dap.adapters.delve = { type = "server", port = "''${port}", executable = { command = "${getExe cfg.dap.package}", args = { "dap", "-l", "127.0.0.1:''${port}" }, }, } dap.configurations.go = { { type = "delve", name = "Debug", request = "launch", program = "''${file}", }, { type = "delve", name = "Debug test", -- configuration for debugging test files request = "launch", mode = "test", program = "''${file}", }, -- works with go.mod packages and sub packages { type = "delve", name = "Debug test (go.mod)", request = "launch", mode = "test", program = "./''${relativeFileDirname}", }, } ''; }; }; in { options.vim.languages.go = { enable = mkEnableOption "Go language support"; treesitter = { enable = mkEnableOption "Enable Go treesitter" // {default = config.vim.languages.enableTreesitter;}; package = nvim.types.mkGrammarOption pkgs "go"; }; lsp = { enable = mkEnableOption "Enable Go LSP support" // {default = config.vim.languages.enableLSP;}; server = mkOption { description = "Go LSP server to use"; type = with types; enum (attrNames servers); default = defaultServer; }; package = mkOption { description = "Go LSP server package"; type = types.package; default = servers.${cfg.lsp.server}.package; }; }; dap = { enable = mkOption { description = "Enable Go Debug Adapter"; type = types.bool; default = config.vim.languages.enableDAP; }; debugger = mkOption { description = "Go debugger to use"; type = with types; enum (attrNames debuggers); default = defaultDebugger; }; package = mkOption { description = "Go debugger package."; type = types.package; default = debuggers.${cfg.dap.debugger}.package; }; }; }; config = mkIf cfg.enable (mkMerge [ (mkIf cfg.treesitter.enable { vim.treesitter.enable = true; vim.treesitter.grammars = [cfg.treesitter.package]; }) (mkIf cfg.lsp.enable { vim.lsp.lspconfig.enable = true; vim.lsp.lspconfig.sources.go-lsp = servers.${cfg.lsp.server}.lspConfig; }) (mkIf cfg.dap.enable { vim.debugger.nvim-dap.enable = true; vim.debugger.nvim-dap.sources.go-debugger = debuggers.${cfg.dap.debugger}.dapConfig; }) ]); }