Ink_smart_contract.txt

set up environment:

rustup default stable
rustup update
rustup update nightly
rustup target add wasm32-unknown-unknown --toolchain nightly

I am using mac, so install brew first:
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
follow the tutorial and then install:
brew install binaryen

and then install another two dependencies: 
cargo install cargo-dylint dylint-link

The previous command failed, and I fix it by install:
brew install openssl


and then:
cargo install cargo-contract --force --locked


If you get error: 
cargo +nightly contract build
error: toolchain 'nightly-aarch64-apple-darwin' is not installed

Use this to fix it:
rustup toolchain install nightly
cargo install cargo-contract --version 2.0.0-rc

and the cargo lock file is not there, I used: rustup component add rust-src --toolchain nightly-aarch64-apple-darwin



I am learning from : https://www.youtube.com/watch?v=8ij_lhFpJaI and https://github.com/AstarNetwork/ink-xvm-sdk

This is also a great tutorial: https://www.crowdcast.io/c/astar-tech-talk-006-wasm-nfts