Trying to open a file in a non-existing path creates error

[Daniel Egger]

FAQ

• I have checked the FAQ and it didn't resolve my problem.

Issues

• I have checked existing issues and there are no issues with the same problem.

Neovim Version

NVIM v0.9.5 Build type: Release LuaJIT 2.1.1703358377

Dev Version?

• I am using a stable Neovim release version, or if I am using a dev version of Neovim I have confirmed that my issue is reproducible on a stable version.

Operating System

macOS Ventura 13.6.3

Minimal Config

-- this template is borrowed from nvim-lspconfig
local on_windows = vim.loop.os_uname().version:match("Windows")

local function join_paths(...)
    local path_sep = on_windows and "\\" or "/"
    local result = table.concat({ ... }, path_sep)
    return result
end

vim.g.loaded_remote_plugins = ""
vim.cmd([[set runtimepath=$VIMRUNTIME]])

local temp_dir = vim.loop.os_getenv("TEMP") or "/tmp"

vim.cmd("set packpath=" .. join_paths(temp_dir, "nvim", "site"))

local package_root = join_paths(temp_dir, "nvim", "site", "pack")
local install_path = join_paths(package_root, "packer", "start", "packer.nvim")
local compile_path = join_paths(install_path, "plugin", "packer_compiled.lua")

local null_ls_config = function()
    local null_ls = require("null-ls")
    -- add only what you need to reproduce your issue
    null_ls.setup({
        sources = {},
        debug = true,
    })
end

local function load_plugins()
    -- only add other plugins if they are necessary to reproduce the issue
    require("packer").startup({
        {
            "wbthomason/packer.nvim",
            {
                "nvimtools/none-ls.nvim",
                requires = { "nvim-lua/plenary.nvim" },
                config = null_ls_config,
            },
        },
        config = {
            package_root = package_root,
            compile_path = compile_path,
        },
    })
end

if vim.fn.isdirectory(install_path) == 0 then
    vim.fn.system({ "git", "clone", "https://github.com/wbthomason/packer.nvim", install_path })
    load_plugins()
    require("packer").sync()
else
    load_plugins()
    require("packer").sync()
end

local capabilities = vim.lsp.protocol.make_client_capabilities()
local null_ls = require("null-ls")

null_ls.setup({
	sources = {
                null_ls.builtins.diagnostics.cppcheck,
              },
	capabilities = capabilities,
})

Steps to Reproduce

nvim --clean -u minimal_init.lua foo/bar/com.c

Reproducibility Check

• I confirm that my minimal config is based on the minimal_init.lua template and that my issue is reproducible by running nvim --clean -u minimal_init.lua and following the steps above.

Expected Behavior

No error.

Actual Behavior

[null-ls] failed to run generator: ...cal/share/nvim/plugged/none-ls.nvim/lua/null-ls/loop.lua:237: failed to create temp file: ENOENT: no such file or di
rectory: /Users/egger/foo.c

Debug Log

[WARN Mon Jan 22 14:36:31 2024] /tmp/nvim/site/pack/packer/start/none-ls.nvim/lua/null-ls/generators.lua:94: failed to run generator: ...site/pack/packer/start/none-ls.nvim/lua/null-ls/loop.lua:237: failed to create temp file: ENOENT: no such file or directory: /Users/egger/.config/nvim/foo/bar/.null-ls_814785_com.c

Help

No

Implementation Help

No response

Requirements

• I have read and followed the instructions above and understand that my issue will be closed if I did not provide the required information.