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neovim-flake/modules/languages/go.nix

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Nix
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{
config,
pkgs,
lib,
...
}: let
inherit (builtins) attrNames;
inherit (lib.options) mkEnableOption mkOption;
inherit (lib.modules) mkIf mkMerge;
inherit (lib.meta) getExe;
inherit (lib.lists) isList;
inherit (lib.types) bool enum either listOf package str;
inherit (lib.nvim.types) mkGrammarOption;
inherit (lib.nvim.lua) expToLua;
cfg = config.vim.languages.go;
defaultServer = "gopls";
servers = {
gopls = {
package = pkgs.gopls;
lspConfig = ''
lspconfig.gopls.setup {
capabilities = capabilities;
on_attach = default_on_attach;
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cmd = ${
if isList cfg.lsp.package
then expToLua cfg.lsp.package
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else ''{"${cfg.lsp.package}/bin/gopls", "serve"}''
},
}
'';
};
};
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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 "Go treesitter" // {default = config.vim.languages.enableTreesitter;};
package = mkGrammarOption pkgs "go";
};
lsp = {
enable = mkEnableOption "Go LSP support" // {default = config.vim.languages.enableLSP;};
server = mkOption {
description = "Go LSP server to use";
type = enum (attrNames servers);
default = defaultServer;
};
package = mkOption {
description = "Go LSP server package, or the command to run as a list of strings";
example = ''[lib.getExe pkgs.jdt-language-server " - data " " ~/.cache/jdtls/workspace "]'';
type = either package (listOf str);
default = servers.${cfg.lsp.server}.package;
};
};
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dap = {
enable = mkOption {
description = "Enable Go Debug Adapter";
type = bool;
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default = config.vim.languages.enableDAP;
};
debugger = mkOption {
description = "Go debugger to use";
type = enum (attrNames debuggers);
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default = defaultDebugger;
};
package = mkOption {
description = "Go debugger package.";
type = package;
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default = debuggers.${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.${cfg.lsp.server}.lspConfig;
})
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(mkIf cfg.dap.enable {
vim.debugger.nvim-dap.enable = true;
vim.debugger.nvim-dap.sources.go-debugger = debuggers.${cfg.dap.debugger}.dapConfig;
})
]);
}