vercel: Fails install on Windows

npm i now -g

On windows, yields

C:\Users\User\test>npm i now -g
C:\Program Files\nodejs\now -> C:\Program Files\nodejs\node_modules\now\download\dist\now
 
> now@7.3.0 postinstall C:\Program Files\nodejs\node_modules\now
> node download/install.js
 
> For the source code, check out: https://github.com/zeit/now-cli
 
> Downloading now CLI 7.3.0 [====================] 100%
 
{ Error: ENOENT: no such file or directory, open 'C:\Users\User\AppData\Roaming\npm\now'
    at Error (native)
    at Object.fs.openSync (fs.js:641:18)
    at Object.fs.readFileSync (fs.js:509:33)
    at _callee2$ (C:\ProgramData\nvm\v6.11.1\node_modules\now\download\dist\download.js:2138:249)
    at tryCatch (C:\ProgramData\nvm\v6.11.1\node_modules\now\download\dist\download.js:2328:40)
    at GeneratorFunctionPrototype.invoke [as _invoke] (C:\ProgramData\nvm\v6.11.1\node_modules\now\download\dist\download.js:2566:22)
    at GeneratorFunctionPrototype.prototype.(anonymous function) [as next] (C:\ProgramData\nvm\v6.11.1\node_modules\now\download\dist\download.js:2380:21)
    at step (C:\ProgramData\nvm\v6.11.1\node_modules\now\download\dist\download.js:3023:30)
    at C:\ProgramData\nvm\v6.11.1\node_modules\now\download\dist\download.js:3034:13
    at process._tickCallback (internal/process/next_tick.js:109:7)
  errno: -4058,
  code: 'ENOENT',
  syscall: 'open',
  path: 'C:\\Users\\User\\AppData\\Roaming\\npm\\now' }
npm ERR! Windows_NT 10.0.15063
npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "i" "now" "-g"
npm ERR! node v6.11.1
npm ERR! npm  v3.10.10
npm ERR! code ELIFECYCLE
 
npm ERR! now@7.3.0 postinstall: `node download/install.js`
npm ERR! Exit status 2
npm ERR!
npm ERR! Failed at the now@7.3.0 postinstall script 'node download/install.js'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the now package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node download/install.js
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs now
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls now
npm ERR! There is likely additional logging output above.
 
npm ERR! Please include the following file with any support request:
npm ERR!     C:\Users\User\test\npm-debug.log

Steps to reproduce:

• virtualbox image from microsoft.
• Install Chocolatey
• choco install nvm -y
• nvm install 6.11.1
• nvm use 6.11.1
• npm i now -g

Fails to install 7.3.0