Invalid option to --combined-json: clone-bin

• py-solc Version: 3.0.0
• solc Version: 0.5.0
• Python Version: 3.5.3
• OS: Linux debian 9

What was wrong?

solc does not take the system argument “–combined-json” and returns an error “Invalid option to --combined-json: clone-bin”

tried like this: https://stackoverflow.com/questions/50238914/py-solc-and-solidity-imports

root@debian9:~dev/eth/# solc --version    
solc, the solidity compiler commandline interface                                    
Version: 0.5.0-develop.2018.10.17+commit.72b1bb00.mod.Linux.g++    

root@debian9:~dev/eth/# python3.5       
Python 3.5.3 (default, Sep 27 2018, 17:25:39)                                      
[GCC 6.3.0 20170516] on linux                                                      
Type "help", "copyright", "credits" or "license" for more information.             
>>> import os
>>> from solc import compile_files
>>> PROJECT_ROOT = os.getcwd()
>>> compiled_sol = compile_files([os.path.join(PROJECT_ROOT, "bar.sol"), os.path.join(PROJECT_
ROOT, "baz.sol")])                                                                            
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.5/dist-packages/solc/main.py", line 135, in compile_files
    stdoutdata, stderrdata, command, proc = solc_wrapper(**compiler_kwargs)
  File "/usr/local/lib/python3.5/dist-packages/solc/utils/string.py", line 85, in inner
    return force_obj_to_text(fn(*args, **kwargs))
  File "/usr/local/lib/python3.5/dist-packages/solc/wrapper.py", line 165, in solc_wrapper
    stderr_data=stderrdata,
solc.exceptions.SolcError: An error occurred during execution
> command: `solc --combined-json abi,asm,ast,bin,bin-runtime,clone-bin,devdoc,interface,opcode
s,userdoc /root/dev/eth/bar.sol /root/dev/eth/`
> return code: `1`
> stderr:

> stdout:
Invalid option to --combined-json: clone-bin

[Chiheb-Nexus]

The solution to this problem is:

• Remove any solc version < 0.4.25: If you’re using Debian/Ubuntu just run: sudo apt-get remove solc
• Under your virtualenv run: pip install py-solc then python -m solc.install v0.4.25 Now you’ve solc compiler installed under your: $HOME/.py-solc/solc-v0.4.25/bin/solc, all you need to do now is make solc available just by typing it’s name in the terminal. You nned to copy you’re solc file to /usr/bin or /usr/local/bin: cp $HOME/.py-solc/solc-v0.4.25/bin/solc /usr/local/bin/

And you’ll endup with the correct solc version and you’ll not have this error.

[dbe]

From the patch notes of Solidity 5.0: Link

“The --clone-bin and --combined-json clone-bin command line options were removed.”.

Seems like you will have to downgrade your solc version until py-solc changes it’s use of --combined-json clone-bin.