discount cannot be installed on windows

[hustcer]

npm ERR! discount@0.2.3 preinstall: node-waf configure build
npm ERR! cmd "/c" "node-waf configure build" failed with 1
npm ERR!
npm ERR! Failed at the discount@0.2.3 preinstall script.
npm ERR! This is most likely a problem with the discount package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node-waf configure build
npm ERR! You can get their info via:
npm ERR! npm owner ls discount
npm ERR! There is likely additional logging output above.
npm ERR!
npm ERR! System Windows_NT 5.1.2600
npm ERR! command "C:\Program Files\nodejs\node.exe" "C:\Program Files\nodejs\node_modules\npm\bin\npm-cli.js" "install" "discount"
npm ERR! cwd C:\iwork\GitHub
npm ERR! node -v v0.6.18
npm ERR! npm -v 1.1.21
npm ERR! code ELIFECYCLE
npm ERR! message discount@0.2.3 preinstall: node-waf configure build
npm ERR! message cmd "/c" "node-waf configure build" failed with 1
npm ERR! errno {}
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR! C:\iwork\GitHub\npm-debug.log
npm not ok

It seemed that node-waf is not supported