nvim: Fix automatic dark mode switching

tree/.config/nvim/lua/theme.lua

@@ -27,7 +27,7 @@ require("gruvbox").setup({
 
 require('color-scheme')
 
-local color_scheme_file = "~/.cache/dotfiles/.config/nvim/lua/color-scheme.lua"
+local color_scheme_file = os.getenv("HOME") .. "/.cache/dotfiles/.config/nvim/lua/color-scheme.lua"
 require('fwatch').watch(color_scheme_file, "luafile " .. color_scheme_file)
 
 vim.cmd([[colorscheme gruvbox]])