Lsp servers aren't installed on 7.3.1

[powr-service]

On the latest master with latest nightly neovim I have this custom.lua:

custom.lua

local my_config = {
  -- the global theme settings
  theme = "github_dimmed",
  langs = {
    "bash",
    "comment",
    "html",
    "json",
    "nix",
    "dockerfile",
    "javascript",
    "css",
    "ruby",
    "yaml",
    { "vim", "vimls" },
    { "go", "gopls" },
    { "lua", "sumneko_lua" },
    { "bash", "bashls" },
    { "c", "clangd" }, -- require npm
    { "css", "cssls" }, -- require npm
    { "cpp", "clangd" }, -- require npm
    { "javascript", "eslint" }, -- require npm
    { "python", "pyright" }, -- require npm
    { "ruby", "solargraph" }, -- require npm
    { "yaml", "yamlls" }, -- require npm
    { "docker", "dockerls" }, -- require npm
  },

  null_ls = {
    enable_stylua_fmt = false, -- require stylua executable
  },

  autocmd_enable = {
    fcitx5 = false, -- require fcitx5-remote
    lastline = true,
    diff_on_commit = false, -- might mess up your window
  },

  markdown = {
    -- must be executable
    preview_browser = "firefox",
  },
}

return my_config

Nvim Info

`$nvim --version` output:
NVIM v0.8.0-dev
Build type: RelWithDebInfo
LuaJIT 2.1.0-beta3
Compilation: /usr/bin/cc -g -O2 -fdebug-prefix-map=/build/neovim-j3kVws/neovim-0.8.0~ubuntu1+git202208091232-cd14efd28-66ad461b6=. -fstack-protector-strong -Wformat -Werror=format-security -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1 -DNVIM_TS_HAS_SET_MATCH_LIMIT -DNVIM_TS_HAS_SET_ALLOCATOR -O2 -g -Og -g -Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict-prototypes -std=gnu99 -Wshadow -Wconversion -Wdouble-promotion -Wmissing-noreturn -Wmissing-format-attribute -Wmissing-prototypes -Wimplicit-fallthrough -Wvla -fstack-protector-strong -fno-common -fdiagnostics-color=auto -DINCLUDE_GENERATED_DECLARATIONS -D_GNU_SOURCE -DNVIM_MSGPACK_HAS_FLOAT32 -DNVIM_UNIBI_HAS_VAR_FROM -DMIN_LOG_LEVEL=3 -I/build/neovim-j3kVws/neovim-0.8.0~ubuntu1+git202208091232-cd14efd28-66ad461b6/build/cmake.config -I/build/neovim-j3kVws/neovim-0.8.0~ubuntu1+git202208091232-cd14efd28-66ad461b6/src -I/build/neovim-j3kVws/neovim-0.8.0~ubuntu1+git202208091232-cd14efd28-66ad461b6/.deps/usr/include -I/usr/include -I/build/neovim-j3kVws/neovim-0.8.0~ubuntu1+git202208091232-cd14efd28-66ad461b6/build/src/nvim/auto -I/build/neovim-j3kVws/neovim-0.8.0~ubuntu1+git202208091232-cd14efd28-66ad461b6/build/include
Compiled by buildd@lcy02-amd64-006

Features: +acl +iconv +tui
See ":help feature-compile"

   system vimrc file: "$VIM/sysinit.vim"
  fall-back for $VIM: "/usr/share/nvim"

Run :checkhealth for more info

 OS: Ubuntu 20.04.4 LTS on Windows 10 x86_64
 Kernel: 5.10.102.1-microsoft-standard-WSL2

Nodejs versions are managed by asdf and for global it's set to 16.14.2.

LspInfo output:

 Language client log: /home/azaza/.local/state/nvim/lsp.log
 Detected filetype:   lua
 
 0 client(s) attached to this buffer: 
 
 Other clients that match the filetype: lua
 
 Config: sumneko_lua
 	filetypes:         lua
 	root directory:    /home/azaza/.dotconf/wsl/nvim/.config/nvim
 	cmd:               lua-language-server
 	cmd is executable: Unable to find executable. Please check your path and ensure the server is installed
 	autostart:         true
 	custom handlers:   textDocument/hover, textDocument/signatureHelp
 
 Configured servers list: sumneko_lua, clangd, yamlls, eslint, cssls, dockerls, bashls, vimls, pyright, gopls, solargraph

[Avimitin]

I don't trust the LSP installer plugin anymore. The upstream always abandons the old project and stops maintaining it. So I remove it in commit 564b780.

Besides, managing that amount of the executable by an editor plugin is not suggested: the environment might be messed up by the plugin if they push some mistake to the master branch, and those prebuilt executable might got compatibility issues on your machine because they are built in the GitHub action (Incompatible glibc, share library...etc), and the last and the most important reason is that we cannot fully trust an executable file downloaded by an editor plugin. There have been many examples of supply chain security issues.

So, I recommend you use your system package manager to install those LSP servers. Your system package manager is always a trusted and reliable source. They are born to install/upgrade/uninstall packages. In my opinion, I don't want another pip/npm-like plugin to introduce a great deal of uncertainty. If you still prefer "automatically setup", you can try mason.nvim. But, please rethink carefully.