"Access is denied" installing choosenim on Windows
When I run the choosenim installer, I get an error "Access is denied".
I've tried running the .bat file, and running the command "./choosenim/choosenim stable" manually.

The only thing I can think that could be different on my system, is my $HOME is on E, but $USERPROFILE is on E.
I've moved my home directory off that drive and onto another drive.
If you fully move the home directory on Windows, you break system updates, hence I did not.

I've tried running the installer from both C and E drives with no change.

```
~/Downloads/apps/development/nim/choosenim-0.6.0_windows_amd64$ ls
choosenim/  runme.bat
im/choosenim.exe stable
    Prompt: Can choosenim record and send anonymised telemetry data? [y/n]
        ... Anonymous aggregate user analytics allow us to prioritise
        ... fixes and features based on how, where and when people use Nim.
        ... For more details see: https://goo.gl/NzUEPf.
    Answer: n
Downloading C compiler (Mingw64)
[##################################################] 100.0% 0kb/s
 Extracting mingw64.7z
       Tip: 5 messages have been suppressed, use --verbose to show them.
     Error: Unable to extract. Error was 'Access is denied.
        ... '.
```