can't install with nimble
$ nim --version
Nim Compiler Version 0.18.1 [Windows: amd64]
Compiled at 2018-08-18
Copyright (c) 2006-2018 by Andreas Rumpf

git hash: b5171f57ef00bffb12387d7daf3487c5e07645f9
active boot switches: -d:release

$ nimble install nimtorch
    Prompt: nimtorch not found in any local packages.json, check internet for updated packages? [y/N]
y
    Answer: Downloading Official package list
    Success Package list downloaded.
       Tip: 3 messages have been suppressed, use --verbose to show them.
     Error: Package not found.
