Slither failing to compile

[jpthor]

Machine: macOS Mojave && macOS Catalina
Python: 3.8 && 3.7
Attempted re-installs of both Python3 and Pip3
Verified install of cryptic-compile: 01.8
Slither: 0.6.12
Error reproduced on calling both slither . and slither <file.sol>

ERROR:root:Error in .
ERROR:root:Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/crytic_compile-0.1.8-py3.8.egg/crytic_compile/platform/solc.py", line 242, in get_version
    process = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/subprocess.py", line 854, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/subprocess.py", line 1702, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'solc'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/slither_analyzer-0.6.12-py3.8.egg/slither/__main__.py", line 604, in main_impl
    (slither_instances, results_detectors, results_printers, number_contracts) = process_all(filename, args,
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/slither_analyzer-0.6.12-py3.8.egg/slither/__main__.py", line 61, in process_all
    compilations = compile_all(target, **vars(args))
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/crytic_compile-0.1.8-py3.8.egg/crytic_compile/crytic_compile.py", line 1034, in compile_all
    compilations.append(CryticCompile(filename, **kwargs))
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/crytic_compile-0.1.8-py3.8.egg/crytic_compile/crytic_compile.py", line 119, in __init__
    self._compile(**kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/crytic_compile-0.1.8-py3.8.egg/crytic_compile/crytic_compile.py", line 924, in _compile
    self._platform.compile(self, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/crytic_compile-0.1.8-py3.8.egg/crytic_compile/platform/solc.py", line 106, in compile
    compiler="solc", version=get_version(solc), optimized=is_optimized(solc_arguments)
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/crytic_compile-0.1.8-py3.8.egg/crytic_compile/platform/solc.py", line 244, in get_version
    raise InvalidCompilation(error)
crytic_compile.platform.exceptions.InvalidCompilation: [Errno 2] No such file or directory: 'solc'

[jpthor]

I have a feeling now it might be to do with py-solc or something along those lines. Will go debug that, but it should be installed as a dependency?

[montyly]

Hi @jpthor.

Slither uses solc (or any compiler framework, such as Truffle) to compile the contracts. If you don't have solc installed, I would recommend to use solc-select, it allows to quickly switch between solc version.

[nazariyv]

solc-select worked perfectly for me. Thanks