Provided bin scripts are not working

[bitphage]

 % piston -h
Traceback (most recent call last):
  File "/home/vvk/devel/golos/otkat-py/venv/bin/piston", line 7, in <module>
    steem.cli.legacy()
  File "/home/vvk/devel/golos/otkat-py/venv/lib/python3.6/site-packages/steem/cli.py", line 83, in legacy
    version=pkg_resources.require("steem")[0].version
  File "/home/vvk/devel/golos/otkat-py/venv/lib/python3.6/site-packages/pkg_resources/__init__.py", line 981, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/home/vvk/devel/golos/otkat-py/venv/lib/python3.6/site-packages/pkg_resources/__init__.py", line 872, in resolve
    raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (toml 0.9.3 (/home/vvk/devel/golos/otkat-py/venv/lib/python3.6/site-packages), Requirement.parse('toml==0.9.3.1'), {'steem'})


% steempy -h
Traceback (most recent call last):
  File "/home/vvk/devel/golos/otkat-py/venv/bin/steempy", line 7, in <module>
    steem.cli.legacy()
  File "/home/vvk/devel/golos/otkat-py/venv/lib/python3.6/site-packages/steem/cli.py", line 83, in legacy
    version=pkg_resources.require("steem")[0].version
  File "/home/vvk/devel/golos/otkat-py/venv/lib/python3.6/site-packages/pkg_resources/__init__.py", line 981, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/home/vvk/devel/golos/otkat-py/venv/lib/python3.6/site-packages/pkg_resources/__init__.py", line 872, in resolve
    raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (toml 0.9.3 (/home/vvk/devel/golos/otkat-py/venv/lib/python3.6/site-packages), Requirement.parse('toml==0.9.3.1'), {'steem'})