Problems with secp256k1

[maxcado]

Hello,
I'm trying to use your code. It looks pretty well organized. Thanks for sharing. I've installed it on a linux and Windows machine but had some issues installing on Windows. There were errors regarding no secp256k1 and no pkg-config. I managed to get it installed but now when I use some code taken from
https://pybtc.readthedocs.io/en/master/_modules/pybtc/functions/bip32.html#private_from_xprivate_key I get the following message:

Traceback (most recent call last):
File "C:\Users\user\AppData\Local\Programs\Python\Python37-32\Lib\site-packages\pybtc-2.0-py3.7.egg\pybtc\xprv-to-prvkey.py", line 4, in
from secp256k1 import ffi
ModuleNotFoundError: No module named 'secp256k1'

How can I effectively manage pybtc to get all modules working properly so I can make use of the code.

[4tochka]

Please install secp256k1 module:
pip3 install secp256k1

[maxcado]

I've tried installing the module secp256k1 using pip3 and I get this message:
'pkg-config' is required to install this package. Please see the README for
details.

What is pkg-config?

[4tochka]

For Ubuntu/Debian OS,

apt-get install -y pkg-config

For Redhat/Yum OS,

yum install -y pkgconfig

[4tochka]

Mac OS
brew install pkg-config

[maxcado]

What about the Windows platform? That is where the problem with installation occurred.

[maxcado]

What about the windows platform? ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐:

…

For Ubuntu/Debian OS, apt-get install -y pkg-config For Redhat/Yum OS, yum install -y pkgconfig — You are receiving this because you authored the thread. Reply to this email directly, [view it on GitHub](#7 (comment)), or [mute the thread](https://github.com/notifications/unsubscribe-auth/AooqlAhsUYijxEGBW_FZnGisG04me11fks5unaCTgaJpZM4XdG0x).

[maxcado]

What about the windows platform? ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

…

On Monday, October 22, 2018 6:41 AM, Aleksey Karpov ***@***.***> wrote: Mac OS brew install pkg-config — You are receiving this because you authored the thread. Reply to this email directly, [view it on GitHub](#7 (comment)), or [mute the thread](https://github.com/notifications/unsubscribe-auth/AooqlPFhwATdiSLfz8F_J5Mmil8OWzc2ks5unaDRgaJpZM4XdG0x).

[lyonLeeLPL]

i meet the same question.for help

[zjlywjh001]

Sorry for bothering, I meet the same problem. But it seemed that install msys2 or mingw-w64 on windows and install pkg-config package in mingw-w64 will solve this issue on windows.