nix.nvim/nvim/ftplugin/c.lua

-- Exit if the language server isn't available
if vim.fn.executable('clangd') ~= 1 then
  return
end

-- require'lspconfig'.clangd.setup{}

local root_files = {
  'compile_commands.json',
  '.vscode',
  '.git',
}

vim.lsp.start {
  name = 'clangd',
  cmd = { 'clangd' },
  root_dir = vim.fs.dirname(vim.fs.find(root_files, { upward = true })[1]),
  capabilities = require('user.lsp').make_client_capabilities(),
} 

local dap = require("dap")
local pickers = require("telescope.pickers")
local finders = require("telescope.finders")
local conf = require("telescope.config").values
local actions = require("telescope.actions")
local action_state = require("telescope.actions.state")

if require('user.file_exists').file_exists(vim.fs.dirname(vim.fs.find(root_files, { upward = true })[1]) .. "/.vscode/launch.json") then
  require("dap.ext.vscode").load_launchjs(nil, { cppdbg = { "c", "cpp", "asm" } })
end

dap.adapters.gdb = {
  type = "executable",
  command = "gdb",
  args = { "-i", "dap" }
}

dap.configurations.c = {
  -- {
  --   name = "Launch",
  --   type = "gdb",
  --   request = "launch",
  --   program = function()
  --     return vim.fn.input('Path to executable: ', vim.fn.getcwd() .. '/', 'file')
  --   end,
  --   cwd = "${workspaceFolder}",
  --   stopAtBeginningOfMainSubprogram = false,
  -- },
  {
    name = "Launch an executable",
    type = "gdb",
    request = "launch",
    cwd = "${workspaceFolder}",
    program = function()
      return coroutine.create(function(coro)
        local opts = {}
        pickers
          .new(opts, {
            prompt_title = "Path to executable",
            finder = finders.new_oneshot_job({ "fd", "--hidden", "--no-ignore", "--type", "x" }, {}),
            sorter = conf.generic_sorter(opts),
            attach_mappings = function(buffer_number)
              actions.select_default:replace(function()
                actions.close(buffer_number)
                coroutine.resume(coro, action_state.get_selected_entry()[1])
              end)
              return true
            end,
          })
          :find()
      end)
    end,
    stopAtBeginningOfMainSubprogram = false,
  },
}