nile install fails - gmp.h file not found

[cipherGarden]

Getting this error after 'nile install' when trying to follow the installation instructions on an m1 mac running Big Sur 11.5.2:

    creating build/temp.macosx-10.14.6-arm64-3.8/src
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -iwithsysroot/System/Library/Frameworks/System.framework/PrivateHeaders -iwithsysroot/Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.8/Headers -arch arm64 -arch x86_64 -Werror=implicit-function-declaration -Isrc/ -I/Users/cipherGarden/Documents/cipherGarden/tutorials/starkware/zeppelinCairo/cairo-contracts/env/include -I/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/include/python3.8 -c src/curveMath.c -o build/temp.macosx-10.14.6-arm64-3.8/src/curveMath.o -O2
    In file included from src/curveMath.c:1:
    src/curveMath.h:6:10: fatal error: 'gmp.h' file not found
    #include <gmp.h>
             ^~~~~~~
    1 error generated.
    error: command 'clang' failed with exit status 1
    ----------------------------------------

🔢 Code to reproduce bug

brew install gmp # mac
git clone https://github.com/OpenZeppelin/cairo-contracts.git
cd cairo-contracts
python3 -m venv env
source env/bin/activate
pip install cairo-nile
nile install

python version: 3.8.2

[martriay]

Hey there! That's a problem with the Cairo language itself, not really Nile or Cairo Contracts. I suggest you to check out these issues:

• Error installing Cairo on M1 chip (gmp.h) nile#22
• Cannot install in macOS BigSur (M1 chip) AntonKueltz/fastecdsa#74

[martriay]

I'm closing this issue now since it's an issue installing Cairo.