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# Installation
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-----
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`coincurve` is available on PyPI and can be installed with [pip](https://pip.pypa.io):
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```
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pip install coincurve
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```
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## Wheel
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Binary wheels are available for most platforms and require at least version `19.3` of pip to install.
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| | | | | |
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| --- | --- | --- | --- | --- |
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| | macOS | Windows | Linux (glibc) | Linux (musl) |
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| CPython 3.7 | <ul><li>x86_64</li></ul> | <ul><li>x86_64</li><li>x86</li></ul> | <ul><li>x86_64</li><li>i686</li><li>AArch64</li></ul> | <ul><li>x86_64</li><li>i686</li><li>AArch64</li></ul> |
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| CPython 3.8 | <ul><li>x86_64</li><li>ARM64</li></ul> | <ul><li>x86_64</li><li>x86</li></ul> | <ul><li>x86_64</li><li>i686</li><li>AArch64</li></ul> | <ul><li>x86_64</li><li>i686</li><li>AArch64</li></ul> |
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| CPython 3.9 | <ul><li>x86_64</li><li>ARM64</li></ul> | <ul><li>x86_64</li><li>x86</li></ul> | <ul><li>x86_64</li><li>i686</li><li>AArch64</li></ul> | <ul><li>x86_64</li><li>i686</li><li>AArch64</li></ul> |
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| CPython 3.10 | <ul><li>x86_64</li><li>ARM64</li></ul> | <ul><li>x86_64</li><li>x86</li></ul> | <ul><li>x86_64</li><li>i686</li><li>AArch64</li></ul> | <ul><li>x86_64</li><li>i686</li><li>AArch64</li></ul> |
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## Source
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If you are on a platform without support for pre-compiled wheels, you will need certain system packages in order to build from source.
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A few environment variables influence the build:
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- `COINCURVE_UPSTREAM_REF` - This is the Git reference of [libsecp256k1][] to use rather than the (frequently updated) default.
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- `COINCURVE_IGNORE_SYSTEM_LIB` - The presence of this will force fetching of [libsecp256k1][] even if it's already detected at the system level.
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!!! tip
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To avoid installing the binary wheels on compatible distributions, use the `--no-binary` option.
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```
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pip install coincurve --no-binary coincurve
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```
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### Alpine
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```
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sudo apk add autoconf automake build-base libffi-dev libtool pkgconfig python3-dev
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```
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### Debian/Ubuntu
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```
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sudo apt-get install -y autoconf automake build-essential libffi-dev libtool pkg-config python3-dev
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```
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### RHEL/CentOS
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```
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sudo yum install -y autoconf automake gcc gcc-c++ libffi-devel libtool make pkgconfig python3-devel
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```
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### macOS
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```
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xcode-select --install
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brew install autoconf automake libffi libtool pkg-config python
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```
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