Treesitter installing parsers on every start of neovim

[lalitmee]

I am not sure why this is happening but whenever I am starting my neovim, treesitter is installing all the parsers which are mentioned in ensure_installed.

Below is my config for nvim-treesitter, which is inside nvim/lua/lk/plugins/treesitter.lua:

local M = {
    "nvim-treesitter/nvim-treesitter",
    run = ":TSUpdate",
    event = "BufReadPost",
    dependencies = {
        { "JoosepAlviste/nvim-ts-context-commentstring" },
        { "nvim-treesitter/nvim-treesitter-context" },
        { "nvim-treesitter/nvim-treesitter-textobjects" },
        { "p00f/nvim-ts-rainbow" },
        {
            "nvim-treesitter/playground",
            cmd = { "TSPlaygroundToggle" },
        },
    },
}

function M.config()
    local parsers = require("nvim-treesitter.parsers")

    require("nvim-treesitter.configs").setup({
        ensure_installed = vim.g.enable_treesitter_ft,
        -- Auto install parsers, if missing, for the current buffer
        auto_install = false,
        highlight = { enable = true },
        rainbow = {
            enable = true,
            extended_mode = true,
        },
        matchup = { enable = true },
        autotag = { enable = true },
        indent = {
            enable = true,
            disable = { "css" },
        },
        playground = {
            enable = true,
            updatetime = 25,
            persist_queries = false,
        },
        context_commentstring = {
            enable = true,
            enable_autocmd = false,
        },
        query_linter = {
            enable = true,
            use_virtual_text = true,
            lint_events = { "BufWrite", "CursorHold" },
        },
        incremental_selection = {
            enable = true,
            keymaps = {
                init_selection = "<localleader>tv",
                node_incremental = "<localleader>tv",
                scope_incremental = "]v",
                node_decremental = "[v",
            },
        },
        textobjects = {
            lookahead = true,
            select = {
                enable = true,
                keymaps = {
                    ["af"] = "@function.outer",
                    ["if"] = "@function.inner",
                    ["ac"] = "@class.outer",
                    ["ic"] = "@class.inner",
                    ["aC"] = "@conditional.outer",
                    ["iC"] = "@conditional.inner",
                },
            },
            swap = {
                enable = true,
                swap_next = {
                    ["[w"] = "@parameter.inner",
                },
                swap_previous = {
                    ["]w"] = "@parameter.inner",
                },
            },
            move = {
                enable = true,
                set_jumps = true,
                goto_next_start = {
                    ["]m"] = "@function.outer",
                    ["]c"] = "@class.outer",
                },
                goto_next_end = {
                    ["]M"] = "@function.outer",
                    ["]C"] = "@class.outer",
                },
                goto_previous_start = {
                    ["[m"] = "@function.outer",
                    ["[c"] = "@class.outer",
                },
                goto_previous_end = {
                    ["[M"] = "@function.outer",
                    ["[C"] = "@class.outer",
                },
            },
            tree_docs = {
                enable = true,
                keymaps = {
                    doc_node_at_cursor = "<localleader>tc",
                    doc_all_in_range = "<localleader>tc",
                },
            },
            lsp_interop = {
                enable = true,
                peek_definition_code = {
                    ["df"] = "@function.outer",
                    ["dF"] = "@class.outer",
                },
            },
        },
    })
   
    local parser_config = parsers.get_parser_configs()
    parser_config.markdown.filetype_to_parsername = "octo"
end

return M

[folke]

Can you try removing the lazy cache file and see if that solves your issue?

[lalitmee]

It worked. Thanks @folke.

[folke]

Glad it worked, but I would love to fix that issue.

Is there any extra information you can tell me what might have triggered it?

The issue seems to be caused by lazy having ran at some point with packages installed by packer.

[lalitmee]

I am not really sure, but I think it occurred the day when you changed the path for cache from state to cache dir. Not completely sure though what may have created this bug.

[huy-hng]

I've had the same issue, clearing the cache file didn't unfortunately help. I solved the issue by clearing the entire nvim data folder and for good measure the cache as well.

I'm not sure if that helps with your bug hunting, but I've also had packer installed when I just tried to hotswap lazy in.

At one point I was digging through treesitters source code to see whats going on, since I noticed treesitter downloading the parsers to nvims data folder, then "finishing" and removing them again.
Perhaps Treesitter has the parser directory location cached somewhere due to packer and then using lazy, it just puts them in the wrong location?

[folke]

Clearing the cache probbaly would've worked here. I moved the cache file yesterday from state to cahce, so you maybe removed the non-used old cache file?

[huy-hng]

Could be, although I've also tried deleting the cache file, then letting lazy regenerate it. I also turned off cache inside the options which didn't help. In the end its not too bad all things considered. In case you cant find the exact issue, giving people a warning that come from packer might be helpful.

[luisiacc]

This still happens to me, deleted everything related to nvim and build it again from source, deleted it from everywhere but still happens.

[folke]

If anyone reads this, the issue in this case was because of plug plugins still enabled while using lazy.nvim

[charbelnicolas]

This is happening to me, I just migrated from packer to lazy, everytime I open up neovim it downloads all parsers :(

[charbelnicolas]

FWIW, I did not delete any packer configs, or folders, just deleted the line requiring packer and switched it up with lazy's config.

[charbelnicolas]

And it seems it has issues with the fzf plugin for some reason...

[folke]

Then obviously it won't work. Run checkhealth lazy. And delete all packer stuff

[IamTheFij]

Clearing out my old Packer plugins (rm -fr ~/.local/share/nvim/site/pack/packer) did the trick for me. I saw @folke suggested it #153 (reply in thread)

Putting this as top level answer so it's hopefully more discoverable.