Change a lot of neovim stuff

and remove some outdated firefox profiles

home/features/neovim/config/lua/my/tempest.lua

@@ -306,5 +306,19 @@ function M.prepareLazySpec(spec)
   end
 end
 -- }}}
+-- {{{ Theming
+local theme = vim.g.nix_theme
+
+M.theme = theme
+
+function M.theme_contains(name)
+  return string.find(theme.name, name) ~= nil
+end
+
+function M.theme_variant(name)
+  -- +1 for 1-indexed strings and +1 for the space between name and variant
+  return string.lower(string.sub(theme.name, string.len(name) + 2))
+end
+-- }}}
 
 return M