nvim: Remove reliance on lspconfig for python path

Localize the path joining function to the utility module.

nvim/.config/nvim/lua/util/pyenv.lua

@@ -1,27 +1,29 @@
-local util = require("lspconfig.util")
-local path = util.path
 local T = {}
 local exepath = vim.fn.exepath
 
+local function path_join(...)
+return table.concat(vim.tbl_flatten { ... }, '/')
+end
+
 -- from https://github.com/ray-x/navigator.lua/issues/247#issue-1465308677
 T.get_path = function(workspace)
 	-- Use activated virtualenv.
 	if vim.env.VIRTUAL_ENV then
-		return path.join(vim.env.VIRTUAL_ENV, "bin", "python")
+		return path_join(vim.env.VIRTUAL_ENV, "bin", "python")
 	end
 
 	-- Find and use virtualenv in workspace directory.
 	for _, pattern in ipairs({ "*", ".*" }) do
-		local match = vim.fn.glob(path.join(workspace, pattern, "pyvenv.cfg"))
+		local match = vim.fn.glob(path_join(workspace, pattern, "pyvenv.cfg"))
 		if match ~= "" then
-		    local py = path.join("bin", "python")
+		    local py = path_join("bin", "python")
 			match = string.gsub(match, "pyvenv.cfg", py)
 			return match
 		end
-		match = vim.fn.glob(path.join(workspace, pattern, "poetry.lock"))
+		match = vim.fn.glob(path_join(workspace, pattern, "poetry.lock"))
 		if match ~= "" then
 			local venv_base_folder = vim.fn.trim(vim.fn.system("poetry env info -p"))
-			return path.join(venv_base_folder, "bin", "python")
+			return path_join(venv_base_folder, "bin", "python")
 		end
 	end