Create nix interpreter output

lua/plugconfig.lua

@@ -25,6 +25,11 @@ require("pascal_mode")
 -- Ada mode (supported by plugins)
 require("ada_mode")
 
+-- Markdown Preview
+vim.g.mkdp_auto_start = 0
+vim.g.mkdp_browser = "epiphany"
+vim.g.mkdp_echo_preview_url = 1
+
 -- Misc configuration
 if vim == nil then
 	vim = {}