Xcode fixes after upgrading to Lion

I know the instructions say that installing Xcode from the App store is "bleeding edge". I would like to suggest that a couple of fixes that I needed to do to Macports, be listed or linked from these instructions to save others' time.

The first is the bit about having to start up Xcode and install the command-line tools, as described here:
http://guide.macports.org/#installing.xcode.lion

After this, I kept getting messages about "your gcc (3.2.6) is too old". I had to Google the error message to find the fix, on the top of the Problem Hotlist for Macports at https://trac.macports.org/wiki/ProblemHotlist :
sudo xcode-select -switch /Applications/Xcode.app

Maybe the thing to do, is to put the links to these two bits in the Python installation instructions? Maybe there ought to be a little section on what to do if you installed everything on Snow Leopard and have just upgraded to Lion?

Python のインストール手順から始め、リンクされている MacPorts Xcode Lion guide および Problem Hotlist と比較してください。command-line tools の手順と xcode-select の修正を文書化するかリンクし、Snow Leopard から Lion へのアップグレードに関する注記が必要かどうかを明確にしてください。

索引モデルが issue の本文から書いたものです。