refactor: defer some requires

lua/haskell-tools/dap.lua

@@ -1,14 +1,10 @@
 ---@mod haskell-tools.dap haskell-tools nvim-dap setup
 
-local log = require('haskell-tools.log')
-local OS = require('haskell-tools.os')
 local deps = require('haskell-tools.deps')
-local HtProjectHelpers = require('haskell-tools.project.helpers')
-local Path = deps.require_plenary('plenary.path')
-local async = deps.require_plenary('plenary.async')
 
 ---@param root_dir string
 local function get_ghci_dap_cmd(root_dir)
+  local HtProjectHelpers = require('haskell-tools.project.helpers')
   if HtProjectHelpers.is_cabal_project(root_dir) then
     return 'cabal exec -- ghci-dap --interactive -i ${workspaceFolder}'
   else
@@ -22,11 +18,14 @@ end
 local function find_json_configurations(root_dir, opts)
   ---@type HsDapLaunchConfiguration[]
   local configurations = {}
+  local Path = deps.require_plenary('plenary.path')
+  local log = require('haskell-tools.log')
   local results = vim.fn.glob(Path:new(root_dir, opts.settings_file_pattern).filename, true, true)
   if #results == 0 then
     log.info(opts.settings_file_pattern .. ' not found in project root ' .. root_dir)
   else
     for _, launch_json in pairs(results) do
+      local OS = require('haskell-tools.os')
       local content = OS.read_file(launch_json)
       local success, settings = pcall(vim.json.decode, content)
       if not success then
@@ -44,6 +43,7 @@ end
 ---@return table
 local function detect_launch_configurations(root_dir)
   local launch_configurations = {}
+  local Path = deps.require_plenary('plenary.path')
   local HTConfig = require('haskell-tools.config.internal')
   local dap_opts = HTConfig.dap
   ---@param entry_point HsEntryPoint
@@ -70,6 +70,7 @@ local function detect_launch_configurations(root_dir)
     }
     return HsDapLaunchConfiguration
   end
+  local HtProjectHelpers = require('haskell-tools.project.helpers')
   for _, entry_point in pairs(HtProjectHelpers.parse_project_entrypoints(root_dir)) do
     table.insert(launch_configurations, mk_launch_configuration(entry_point))
   end
@@ -114,10 +115,13 @@ local DefaultAutoDapConfigOpts = {
 ---@param opts AddDapConfigOpts|nil
 ---@return nil
 HsDapTools.discover_configurations = function(bufnr, opts)
+  local async = deps.require_plenary('plenary.async')
+  local log = require('haskell-tools.log')
   async.run(function()
     bufnr = bufnr or 0 -- Default to current buffer
     opts = vim.tbl_deep_extend('force', {}, DefaultAutoDapConfigOpts, opts or {})
     local filename = vim.api.nvim_buf_get_name(bufnr)
+    local HtProjectHelpers = require('haskell-tools.project.helpers')
     local project_root = HtProjectHelpers.match_project_root(filename)
     if not project_root then
       log.warn('haskell-tools.dap: Unable to detect project root for file ' .. filename)

lua/haskell-tools/hoogle.lua

@@ -1,9 +1,6 @@
 ---@mod haskell-tools.hoogle haskell-tools Hoogle search
 
 local log = require('haskell-tools.log')
-local deps = require('haskell-tools.deps')
-local HtParser = require('haskell-tools.parser')
-local LspHelpers = require('haskell-tools.lsp.helpers')
 local lsp_util = vim.lsp.util
 
 ---@type fun(sig_or_func_name:string, options:table|nil):nil
@@ -19,6 +16,7 @@ local function mk_lsp_hoogle_signature_handler(options)
     end
     local func_name = vim.fn.expand('<cword>')
     ---@cast func_name string
+    local HtParser = require('haskell-tools.parser')
     local signature_or_func_name = HtParser.try_get_signatures_from_markdown(func_name, result.contents.value)
       or func_name
     log.debug { 'Hoogle LSP signature search', signature_or_func_name }
@@ -67,6 +65,7 @@ elseif opts.mode == 'telescope-local' then
     set_web_handler()
     return
   end
+  local deps = require('haskell-tools.deps')
   if not deps.has_telescope() then
     local msg = 'handler set to "telescope-local" but telescope.nvim is not installed.'
     log.warn(msg)
@@ -78,6 +77,7 @@ elseif opts.mode == 'telescope-local' then
 elseif opts.mode == 'browser' then
   set_browser_handler()
 elseif opts.mode == 'auto' then
+  local deps = require('haskell-tools.deps')
   if not deps.has_telescope() then
     set_browser_handler()
   elseif hoogle_local.has_hoogle() then
@@ -99,6 +99,7 @@ HoogleTools.hoogle_signature = function(options)
     handler(options.search_term)
     return
   end
+  local LspHelpers = require('haskell-tools.lsp.helpers')
   local clients = LspHelpers.get_clients { bufnr = vim.api.nvim_get_current_buf() }
   if #clients > 0 then
     lsp_hoogle_signature(options)

lua/haskell-tools/lsp.lua

@@ -3,11 +3,6 @@
 local HTConfig = require('haskell-tools.config.internal')
 local log = require('haskell-tools.log')
 local Types = require('haskell-tools.types.internal')
-local HtProjectHelpers = require('haskell-tools.project.helpers')
-local OS = require('haskell-tools.os')
-local deps = require('haskell-tools.deps')
-local Path = deps.require_plenary('plenary.path')
-local LspHelpers = require('haskell-tools.lsp.helpers')
 local uv = vim.uv
   ---@diagnostic disable-next-line: deprecated
   or vim.loop
@@ -42,6 +37,7 @@ end
 ---@param client lsp.Client
 ---@return nil
 local function fix_cabal_client(client)
+  local LspHelpers = require('haskell-tools.lsp.helpers')
   if client.name == LspHelpers.cabal_client_name and client.server_capabilities then
     client.server_capabilities = vim.tbl_extend('force', client.server_capabilities, {
       foldingRangeProvider = false,
@@ -87,12 +83,15 @@ HlsTools.load_hls_settings = function(project_root, opts)
   end
   local default_opts = { settings_file_pattern = 'hls.json' }
   opts = vim.tbl_deep_extend('force', {}, default_opts, opts or {})
+  local deps = require('haskell-tools.deps')
+  local Path = deps.require_plenary('plenary.path')
   local results = vim.fn.glob(Path:new(project_root, opts.settings_file_pattern).filename, true, true)
   if #results == 0 then
     log.info(opts.settings_file_pattern .. ' not found in project root ' .. project_root)
     return default_settings
   end
   local settings_json = results[1]
+  local OS = require('haskell-tools.os')
   local content = OS.read_file(settings_json)
   local success, settings = pcall(vim.json.decode, content)
   if not success then
@@ -119,9 +118,11 @@ HlsTools.start = function(bufnr)
     vim.notify('haskell-tools: ' .. msg, vim.log.levels.ERROR)
     return
   end
+  local HtProjectHelpers = require('haskell-tools.project.helpers')
   local is_cabal = HtProjectHelpers.is_cabal_file(bufnr)
   local project_root = ht.project.root_dir(file)
   local hls_settings = type(hls_opts.settings) == 'function' and hls_opts.settings(project_root) or hls_opts.settings
+  local LspHelpers = require('haskell-tools.lsp.helpers')
   local cmd = LspHelpers.get_hls_cmd()
   local hls_bin = cmd[1]
   if vim.fn.executable(hls_bin) == 0 then
@@ -178,6 +179,7 @@ end
 ---@return table[] clients A list of clients that will be stopped
 HlsTools.stop = function(bufnr)
   bufnr = bufnr or vim.api.nvim_get_current_buf()
+  local LspHelpers = require('haskell-tools.lsp.helpers')
   local clients = LspHelpers.get_active_ht_clients(bufnr)
   vim.lsp.stop_client(clients)
   return clients

lua/haskell-tools/project.lua

@@ -1,7 +1,6 @@
 ---@mod haskell-tools.project haskell-tools Project module
 
 local log = require('haskell-tools.log')
-local HtProjectHelpers = require('haskell-tools.project.helpers')
 local deps = require('haskell-tools.deps')
 
 ---@brief [[
@@ -22,6 +21,7 @@ local function telescope_package_search(callback, opts)
     vim.notify(err_msg, vim.log.levels.ERROR)
     return
   end
+  local HtProjectHelpers = require('haskell-tools.project.helpers')
   local package_root = HtProjectHelpers.match_package_root(file)
   if not package_root then
     local err_msg = 'Telescope package search: No package root found for file ' .. file
@@ -63,6 +63,7 @@ local HsProjectTools = {}
 ---@param project_file string The path to a project file
 ---@return string|nil
 HsProjectTools.root_dir = function(project_file)
+  local HtProjectHelpers = require('haskell-tools.project.helpers')
   return HtProjectHelpers.match_cabal_project_root(project_file)
     or HtProjectHelpers.match_stack_project_root(project_file)
     or HtProjectHelpers.match_package_root(project_file)
@@ -72,6 +73,7 @@ end
 ---Open the package.yaml of the package containing the current buffer.
 ---@return nil
 HsProjectTools.open_package_yaml = function()
+  local HtProjectHelpers = require('haskell-tools.project.helpers')
   vim.schedule(function()
     local file = vim.api.nvim_buf_get_name(0)
     local result = HtProjectHelpers.get_package_yaml(file)
@@ -93,6 +95,7 @@ end
 ---@return nil
 HsProjectTools.open_package_cabal = function()
   vim.schedule(function()
+    local HtProjectHelpers = require('haskell-tools.project.helpers')
     local file = vim.api.nvim_buf_get_name(0)
     if vim.fn.filewritable(file) ~= 0 and not HtProjectHelpers.is_cabal_project(file) then
       vim.notify('HsPackageCabal: Not a cabal project?', vim.log.levels.ERROR)
@@ -113,6 +116,7 @@ end
 ---@return nil
 HsProjectTools.open_project_file = function()
   vim.schedule(function()
+    local HtProjectHelpers = require('haskell-tools.project.helpers')
     local file = vim.api.nvim_buf_get_name(0)
     local stack_project_root = HtProjectHelpers.match_stack_project_root(file)
     if stack_project_root then

lua/haskell-tools/repl.lua

@@ -5,7 +5,6 @@
 ---@bruief ]]
 
 local log = require('haskell-tools.log')
-local HtProjectHelpers = require('haskell-tools.project.helpers')
 local Types = require('haskell-tools.types.internal')
 
 ---Extend a repl command for `file`.
@@ -14,6 +13,7 @@ local Types = require('haskell-tools.types.internal')
 ---@param file string|nil An optional project file
 ---@return string[]|nil
 local function extend_repl_cmd(cmd, file)
+  local HtProjectHelpers = require('haskell-tools.project.helpers')
   if file == nil then
     file = vim.api.nvim_buf_get_name(0)
     log.debug('extend_repl_cmd: No file specified. Using current buffer: ' .. file)
@@ -78,6 +78,7 @@ local function mk_repl_cmd(file)
   end
   local HTConfig = require('haskell-tools.config.internal')
   local opts = HTConfig.tools.repl
+  local HtProjectHelpers = require('haskell-tools.project.helpers')
   if Types.evaluate(opts.prefer) == 'stack' and HtProjectHelpers.is_stack_project(chk_path) then
     return mk_stack_repl_cmd(file)
   end

lua/haskell-tools/tags.lua

@@ -4,7 +4,6 @@ local HTConfig = require('haskell-tools.config.internal')
 local Types = require('haskell-tools.types.internal')
 local log = require('haskell-tools.log')
 local deps = require('haskell-tools.deps')
-local HtProjectHelpers = require('haskell-tools.project.helpers')
 
 local _state = {
   fast_tags_generating = false,
@@ -29,6 +28,7 @@ local FastTagsTools = {}
 FastTagsTools.generate_project_tags = function(path, opts)
   path = path or vim.api.nvim_buf_get_name(0)
   opts = vim.tbl_extend('force', { refresh = true }, opts or {})
+  local HtProjectHelpers = require('haskell-tools.project.helpers')
   local project_root = HtProjectHelpers.match_project_root(path) or vim.fn.getcwd() or 'UNDEFINED'
   if opts.refresh == false and _state.projects[project_root] then
     log.debug('Project tags already generated. Skipping.')
@@ -57,6 +57,7 @@ end
 FastTagsTools.generate_package_tags = function(path)
   path = path or vim.api.nvim_buf_get_name(0)
   _state.fast_tags_generating = true
+  local HtProjectHelpers = require('haskell-tools.project.helpers')
   local rel_package_root = HtProjectHelpers.match_package_root(path)
   if not rel_package_root then
     log.warn('generate_package_tags: No rel_package root found.')