Linux: cannot find function `PyEval_ThreadsInitialized` in module `ffi`

[Ploppz]

Arch Linux.

I get these errors:

error[E0425]: cannot find function `PyEval_ThreadsInitialized` in module `ffi`
  --> /home/ploppz/.cargo/git/checkouts/rust-cpython-3cf10c007238aed2/ed21cf1/src/pythonrun.rs:55:26
   |
55 |             assert!(ffi::PyEval_ThreadsInitialized() != 0);
   |                          ^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `ffi`

error[E0425]: cannot find function `PyEval_ThreadsInitialized` in module `ffi`
  --> /home/ploppz/.cargo/git/checkouts/rust-cpython-3cf10c007238aed2/ed21cf1/src/pythonrun.rs:58:26
   |
58 |             assert!(ffi::PyEval_ThreadsInitialized() == 0);
   |                          ^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `ffi`

error[E0425]: cannot find function `PyEval_InitThreads` in module `ffi`
  --> /home/ploppz/.cargo/git/checkouts/rust-cpython-3cf10c007238aed2/ed21cf1/src/pythonrun.rs:65:18
   |
65 |             ffi::PyEval_InitThreads();
   |                  ^^^^^^^^^^^^^^^^^^ did you mean `PyEval_SaveThread`?

error[E0425]: cannot find function `PyEval_InitThreads` in module `ffi`
   --> /home/ploppz/.cargo/git/checkouts/rust-cpython-3cf10c007238aed2/ed21cf1/src/lib.rs:346:10
    |
346 |     ffi::PyEval_InitThreads();
    |          ^^^^^^^^^^^^^^^^^^ did you mean `PyEval_SaveThread`?

$ cat a.py
import sysconfig
config = sysconfig.get_config_vars()
print(config['WITH_THREAD'])

$ python a.py
Traceback (most recent call last):
  File "a.py", line 3, in <module>
    print(config['WITH_THREAD'])
KeyError: 'WITH_THREAD'

$ python2 a.py
1

$ python3.6 a.py
pyenv: python3.6: command not found

The `python3.6' command exists in these Python versions:
  3.6.6

I'm not sure what to do to solve it.

[Dushistov]

Looks like the dup of #144

[Ploppz]

Thanks. So it should be fixed if I use your fork for the time being I assume.