ethereumpackage gets pulled in, you have wrong versions somewhere
eth-prefix, these are new
ethereum-prefix, they generally do not work
vyperpackage now exposes
compile_code(src_code_str, output_format=['abi', 'bytecode', ...])
@voith has retired?
I am not a memeber of the ethereum foundation. I was only contributing in my free time. I took some time off to pursue my hobby. [OFF TOPIC] you can find out what I was doing in my spare time here :D
solcbinary is not installed by default. Please read through the solidity docs for instructions on installing the solc compiler: https://solidity.readthedocs.io/en/v0.5.2/installing-solidity.html