Hooks - need some explanations

[IstiCusi]

Dear cultist, I tried to register as observer to changes in the choice of the python venv -- tried the hook but this is not started. Either I missinterprete the hook or i have a bug, that I do not understand. Could you please tell me the mistake in using the plugin hooks ?

--- @param venv_path string A string containing the absolute path to selected virtualenv
--- @param venv_python string A string containing the absolute path to python binary in selected venv
local function changed_python(venv_path, venv_python)
-local file = io.open("/tmp/venv_change.log", "a") -- /tmp ist ein Beispielpfad
-- file:write("changed_python wurde aufgerufen mit " .. venv_path .. "\n")
-- file:close()
-- vim.notify("Virtuelle Umgebung geändert auf: " .. venv_path, vim.log.levels.INFO)
-- end

return {
"linux-cultist/venv-selector.nvim",
-- dependencies = {
-- "neovim/nvim-lspconfig",
-- },
branch = "regexp",
config = function()
require("venv-selector").setup({
-- auto_refresh = true,
changed_venv_hooks = { changed_python },
settings = {
find_code_venvs = {
command = "fd '^python[0-9.]$' ~/.pyenv/versions --type x --exclude '/pkgs/*'",
},
},
lsp_auto_setup = false,
})
end,
keys = Phonon.venvKeys,
-- keys = {
-- { "nv", "VenvSelect" },
-- },
}