When I use cargo test to build the hello-contracts, it failed.

Error messages:

   Compiling num-traits v0.2.14
   Compiling libloading v0.5.2
   Compiling hashbrown v0.8.2
   Compiling ssvm-evmc-client v6.3.1-rc4
error: failed to run custom build command for `ssvm-evmc-client v6.3.1-rc4`

Caused by:
  process didn't exit successfully: `/home/azureuser/SewUp/examples/hello-contract/target/debug/build/ssvm-evmc-client-e7754bbb80b19255/build-script-build` (exit status: 101)
  --- stdout
  CMAKE_TOOLCHAIN_FILE_x86_64-unknown-linux-gnu = None
  CMAKE_TOOLCHAIN_FILE_x86_64_unknown_linux_gnu = None
  HOST_CMAKE_TOOLCHAIN_FILE = None
  CMAKE_TOOLCHAIN_FILE = None
  CMAKE_GENERATOR_x86_64-unknown-linux-gnu = None
  CMAKE_GENERATOR_x86_64_unknown_linux_gnu = None
  HOST_CMAKE_GENERATOR = None
  CMAKE_GENERATOR = None
  CMAKE_PREFIX_PATH_x86_64-unknown-linux-gnu = None
  CMAKE_PREFIX_PATH_x86_64_unknown_linux_gnu = None
  HOST_CMAKE_PREFIX_PATH = None
  CMAKE_PREFIX_PATH = None
  CMAKE_x86_64-unknown-linux-gnu = None
  CMAKE_x86_64_unknown_linux_gnu = None
  HOST_CMAKE = None
  CMAKE = None
  running: "cmake" "/home/azureuser/.cargo/registry/src/github.com-1ecc6299db9ec823/ssvm-evmc-client-6.3.1-rc4/target/evmc-6.3.1-rc4-crates" "-DCMAKE_INSTALL_PREFIX=/home/azureuser/SewUp/examples/hello-contract/target/debug/build/ssvm-evmc-client-004d03299e68aa05/out" "-DCMAKE_C_FLAGS= -ffunction-sections -fdata-sections -fPIC -m64" "-DCMAKE_C_COMPILER=/usr/bin/cc" "-DCMAKE_CXX_FLAGS= -ffunction-sections -fdata-sections -fPIC -m64" "-DCMAKE_CXX_COMPILER=/usr/bin/c++" "-DCMAKE_ASM_FLAGS= -ffunction-sections -fdata-sections -fPIC -m64" "-DCMAKE_ASM_COMPILER=/usr/bin/cc" "-DCMAKE_BUILD_TYPE=Debug"

  --- stderr
  thread 'main' panicked at '
  failed to execute command: No such file or directory (os error 2)
  is `cmake` not installed?

  build script failed, must exit now', /home/azureuser/.cargo/registry/src/github.com-1ecc6299db9ec823/cmake-0.1.46/src/lib.rs:974:5
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...
error: build failed

Currently, Address type can use from_str to build the instance, for example.

let charman_address = Address::from_str("8663DBF0cC68AaF37fC8BA262F2df4c666a41993")?;

The API just fit and easily for the developer using web3.js before.

And there is a similar another API in Rust crate web3.

let charman_address = Address::from_str("0x8663DBF0cC68AaF37fC8BA262F2df4c666a41993")?;

So it is good to make this the 0x prefix input also work in sewup, such that developer can use this much easier.

I want to deploy the erc20 token smart contracts via SewUp with my own address replacing the address in erc20-examples. I copied my 0xxxxxxxxxxxxxx address copied from MetaMask, then cargo sewup failed. So I tried to delete 0x, then cargo sewup successes.

The abi json is provided by written json string of full object, however, it may be a good way that developer can provide less information and the field not provided will using the default value, such that the framework will be much user/developer friendly.

https://github.com/second-state/SewUp/blob/main/sewup/src/token/erc20.rs#L27-L37

So the issue can be split into the following issues.

• [x] #282
• [x] #283
• [x] #285

Verify done in all example/*. Prefer merge option use rebase and merge.

By the way, if error "Blocking waiting for file lock on the registry index” after building parity from source happened, need

rm -rf ~/.cargo/registry/index/*.

Ref to stackoverflow

There should be a good handle when calling a non-exist function in the contract.

https://github.com/second-state/SewUp/blob/main/examples/hello-contract/src/lib.rs#L16

#[ewasm_main] is a macro to wrap a function to with main function for ewasm. Currently, the function wrappered is not allow to be name as main.

For a better UX, it is good to rename the function when its name is main, and not panic.

Please help with this issue.

Relate PR #35 https://github.com/second-state/SewUp/pull/35/files#diff-6f891a9986798db9fa65d7dd779c98c44afa864739fdd39a556eafdcdb75a943R19 https://github.com/second-state/SewUp/blob/main/sewup-derive/src/lib.rs#L19

• [x] new()
• [x] contains(&self, _key: Any)
• [x] get(&self, _key: Any)
• [x] set(&self, _key: Any, _value: Any)
• [x] remove(&self, _key: Any)
• [x] iter(&self)
• [x] iter_range(&self, a: Any, b: Any)
• [ ] iter_prefix(&self, a: Any)
• [ ] watch(&self, key: Any)
• [x] prev_key(&self, key: Any)
• [x] next_key(&self, key: Any)
• [x] pop(&self, key: Any)
• [x] pop_back(&self)
• [x] pop_front(&self)
• [x] len(&self)
• [x] is_empty(&self)

Return the default message when execution is not expected

#[ewasm_main(default="Something does not works")]
fn main() -> anyhow::Result<()> { .. } 

or

#[ewasm_main(auto, default="Something does not works")]
fn main() -> anyhow::Result<()> { .. } 

The dependency of ssvm-evmc-client should be refactored, if evmc-sys can be reexported like evmc-client, or evmc-sys can be reexport in evmc-client. https://github.com/second-state/rust-ssvm/blob/v0.1.0-rc2-crates/src/lib.rs#L17

Currently, SewUp use nix solution can work well on Linux and macOS.

The versions greater than 0.8.2 ofWasmEdge can be built cross-platform, and SewUp use WasmEdge to run test.

Once the Wasmedge upgrated (#24 ), the CI can work on building sewup on windows.

Besides, the cargo.toml should be set with clear supported targets.

[package.metadata.docs.rs]
targets = ["x86_64-unknown-linux-gnu", "x86_64-pc-windows-msvc", "wasm32-unknown-unknown" ... ]