There's still a few TODOs in the change that I'd like to have clarified first, that's why it is still a draft MR. The removal of the toolchain file will not be part of the final version of this MR of course, as has nothing to do with it.

I'd like to see a binary size of clap and structopt as well, out of curiosity.

What about cli-compiler?

@ptitSeb you're right, had a newer version of the branch including cli-compiler on my disk, force-pushed it now.
@epilys will collect a few numbers regarding binary size.
Didn't expect the MR to get that much attention while still in draft state. :-)

@epilys here are the numbers for changes in binary size (measured on my x64 desktop computer with Debian 11, without llvm compiler enabled, but I think that shouldn't change a lot in this context).

For transparency, this is how I collected the information:

# make sure we start clean
rm -rf target

# build wasmer cli (cranelift + singlepass, no llvm)
cargo build --release --manifest-path lib/cli/Cargo.toml --features cranelift,singlepass --bin wasmer

# build wasmer-headless cli
cargo build --release --manifest-path lib/cli/Cargo.toml --features headless --bin wasmer-headless

# build cli-compiler
cargo build --release --manifest-path lib/cli-compiler/Cargo.toml

# show filesize before stripping
echo "before stripping"
ls -l target/release/wasmer{,-headless,-compiler}

# strip the binaries
strip target/release/wasmer{,-headless,-compiler}

# show filesize after stripping
echo "after stripping"
ls -l target/release/wasmer{,-headless,-compiler}

Raw release binaries

All raw numbers in the tabe are sizes in bytes.

Stripped release binaries

All raw numbers in the tabe are sizes in bytes.

Superseded by #3079