Errors when attempting to install Dat (https://github.com/maxogden/dat) with a PYTHON environment variable set on Windows 7, using Node v0.10.25

npm-install-python.log

Windows PowerShell
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C:\Users\psgs\Documents\GitHub> cd dat
C:\Users\psgs\Documents\GitHub\dat [master +1 ~0 -0 !]> npm install
npm WARN package.json csv-write-stream@0.1.1 No repository field.
npm http GET https://registry.npmjs.org/leveldown
npm http 304 https://registry.npmjs.org/leveldown
npm http GET https://registry.npmjs.org/bindings
npm http GET https://registry.npmjs.org/nan
npm http 304 https://registry.npmjs.org/bindings
npm http 304 https://registry.npmjs.org/nan

> leveldown@0.10.2 install C:\Users\psgs\Documents\GitHub\dat\node_modules\l
eveldown
> node-gyp rebuild


C:\Users\psgs\Documents\GitHub\dat\node_modules\leveldown>node "C:\Program F
iles\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\n
ode-gyp.js" rebuild
gyp ERR! configure error
gyp ERR! stack Error: spawn ENOENT
gyp ERR! stack     at errnoException (child_process.js:988:11)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (child_process.js:779:
34)
gyp ERR! System Windows_NT 6.1.7601
gyp ERR! command "node" "C:\\Program Files\\nodejs\\node_modules\\npm\\node_modu
les\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\Users\psgs\Documents\GitHub\dat\node_modules\leveldown
gyp ERR! node -v v0.10.25
gyp ERR! node-gyp -v v0.12.2
gyp ERR! not ok
npm ERR! leveldown@0.10.2 install: `node-gyp rebuild`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the leveldown@0.10.2 install script.
npm ERR! This is most likely a problem with the leveldown package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node-gyp rebuild
npm ERR! You can get their info via:
npm ERR!     npm owner ls leveldown
npm ERR! There is likely additional logging output above.

npm ERR! System Windows_NT 6.1.7601
npm ERR! command "C:\\Program Files\\nodejs\\\\node.exe" "C:\\Program Files\\nod
ejs\\node_modules\\npm\\bin\\npm-cli.js" "install"
npm ERR! cwd C:\Users\psgs\Documents\GitHub\dat
npm ERR! node -v v0.10.25
npm ERR! npm -v 1.3.24
npm ERR! code ELIFECYCLE
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR!     C:\Users\psgs\Documents\GitHub\dat\npm-debug.log
npm ERR! not ok code 0