I'm not getting any autocomplete when I use this plugin, but everything else seems to work (code actions, inline errors, etc.)

vscode has the same functionality but also have autocompletion working.

I see textDocument/completion responses coming through in my log when I type in nvim, so the LSP seems to be receiving requests and responding properly, they're just not showing up in neovim.

Running 0.8.3 nvim

Hello, I have been trying to setup this plugin for my neovim.
I have installed idris2 and idris2-pack using this bash -c "$(curl -fsSL https://raw.githubusercontent.com/stefan-hoeck/idris2-pack/main/install.bash)" shown on their github page. Then I proceed to install idris2-lsp by using their recommended method (pack). I added this plugin with packer for neovim and I inserted require('idris2').setup({}) into my config file. When I edit any idris file (a file that ends with .idr). I get syntax highlighting but no autocomplete, no error reporting and no interactive development. I am sorry if this is an invalid issue but I have exhausted all solutions I could think of.
Thanks for your time!
PS: here is my nvim config: https://github.com/RHL120/neovimcfg. The only files that matter are probably:

• after/plugin/idris.lua
• lua/plugins.lua
• after/plugin/lsp.lua

I only get syntax highlighting in nvim, i.e. no auto complete, no hover, etc. capabilities. Neovim 0.8.3, with require("idris2").setup({}) in the init.lua, and use({ "ShinKage/idris2-nvim", requires = { "neovim/nvim-lspconfig", "MunifTanjim/nui.nvim" } }) in the plugins-setup.lua file. I using packer as the packer manager.

Need some assistance trying to debug what is wrong.

Issue description

Running Neovim will always cause it to start with the following error message:

Error in packer_compiled: Vim:E475: Invalid value for argument cmd: 'idris2' is not executable
Please check your config for correctness

This error message occurs even if the filetype opened isn't Idris2.

How to reproduce:

Start neovim with idris2-nvim setup, without idris2 in $PATH. This issue doesn't occur with idris2-lsp missing, unless opening an Idris2 file (which seems reasonable to me).

I use Packer as my plugin manager and could reproduce the issue with the startup command only being require('idris2').setup({}), as per the README.

Expected behaviour/Proposed solution:

I think this error message should only pop up when opening Idris2 files.
I hate having to comment/uncomment this plugin on my system depending on whether or not I have access to idris2 on my system.

Also, there are certain use-cases like Nix/Guix where people might only install certain packages as a dependency of project through nix-shell and Idris2 might be one of them.

Maybe this issue can also be circumvented by setting the plugin as optional on Packer or whatever, but I don't really know how to do that and I don't think all plugin managers would support that.

When using https://github.com/zbirenbaum/copilot.lua, GitHub Copilot runs as an LSP client in the buffer alongside other LSP providers (e.g. idris2-lsp), and doesn't provide the functionality this plugin expects. Is there perhaps a way to handle such errors gracefully, or to not request functionality from the wrong LSP clients in the first place?

What happens whenever the plugin runs alongside any such clients:

Error executing vim.schedule lua callback: /usr/share/nvim/runtime/lua/vim/lsp.lua:1018: not found: "textDocument/semanticTokens/full" request handler for client "copilot".
stack traceback:
        [C]: in function 'error'
        /usr/share/nvim/runtime/lua/vim/lsp.lua:1018: in function 'request'
        /usr/share/nvim/runtime/lua/vim/lsp.lua:1485: in function 'fn'
        /usr/share/nvim/runtime/lua/vim/lsp.lua:164: in function 'for_each_buffer_client'
        /usr/share/nvim/runtime/lua/vim/lsp.lua:1484: in function 'buf_request'
        ...te/pack/packer/start/idris2-nvim/lua/idris2/semantic.lua:8: in function 'request'
        ...m/site/pack/packer/start/idris2-nvim/lua/idris2/init.lua:18: in function '_on_attach'
        ...ck/packer/start/nvim-lspconfig/lua/lspconfig/configs.lua:273: in function '_setup_buffer'
        ...ck/packer/start/nvim-lspconfig/lua/lspconfig/configs.lua:183: in function ''
        vim/_editor.lua: in function <vim/_editor.lua:0>

The relevant code:

I installed idris2-nvim and it seems to mostly work (e.g. if I have a syntax error it highlights the line and shows error).

However, if I do idris2.hover.open_split(), it opens the buffer but it is always empty. I also never have any popups appearing unless I do something like "evaluate" (seems like they should appear passively although I am not completely sure).

Due to this problem, I am not able to check types and usability is significantly limited.

I have neovim 0.9.0 on Manjaro Linux.

What

When executing :lua require("idris2.metavars").request_all(), the following error appears:

Error executing vim.schedule lua callback: vim/shared.lua:0: Expected table, got nil
stack traceback:
        [C]: in function 'assert'
        vim/shared.lua: in function 'tbl_isempty'
        ...te/pack/packer/start/idris2-nvim/lua/idris2/metavars.lua:77: in function 'handler'
        /usr/share/nvim/runtime/lua/vim/lsp.lua:995: in function ''
        vim.lua: in function <vim.lua:0>

Why?

I think this is a bug in this check:

The argument result might be nil (see :help lsp-handler), so the call to tbl_isempty fails.

Installed software

Neovim:

$ nvim --version
NVIM v0.7.0-dev+848-gb4fbb9dcf2
Build type: RelWithDebInfo
LuaJIT 2.0.5
Compilation: /usr/bin/cc -march=x86-64 -mtune=generic -O2 -pipe -fno-plt -DNVIM_TS_HAS_SET_MATCH_LIMIT -O2 -g -Og -g -Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict-prototypes -std=gnu99 -Wshadow -Wconversion -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-git/src/build/config -I/build/neovim-git/src/neovim-git/src -I/usr/include -I/build/neovim-git/src/build/src/nvim/auto -I/build/neovim-git/src/build/include
Compiled by builduser

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

Here's my config with lazy:

  { 'ShinKage/idris2-nvim',
    dependencies = {'neovim/nvim-lspconfig', 'MunifTanjim/nui.nvim'},
    -- ft = 'idr',
    lazy = false,
    config = function()
      require('idris2').setup({})
      vim.cmd [[highlight link LspSemantic_type Include]]
    end
  },