Windows 7 Install Failure
The gcc compiler was not downloaded before attempting to build nim. 

        ...      Error: Requested executable is missing. (Path: C:\Users\me\.choosenim\toolchains\mingw32\bin\gcc.exe)

Choosenim output attached.

[install-failure.txt](https://github.com/dom96/choosenim/files/1356716/install-failure.txt)
