build: avoid a single wasm compilation for all contracts

Author: amimart

Makefile.toml

@@ -59,6 +59,7 @@ rustup target add wasm32-unknown-unknown
 
 [tasks.wasm]
 args = [
+  "hack",
   "build",
   "--release",
   "--lib",
@@ -67,7 +68,7 @@ args = [
   "--locked",
 ]
 command = "cargo"
-dependencies = ["install-wasm"]
+dependencies = ["install-wasm", "install-cargo-hack"]
 env = { RUSTFLAGS = "-C link-arg=-s" }
 
 [tasks.schema]
@@ -537,6 +538,9 @@ if ! [ -x "$(command -v ffizer)" ]; then
 fi
 '''
 
+[tasks.install-cargo-hack]
+install_crate = { crate_name = "cargo-hack" }
+
 [config]
 default_to_workspace = false
 min_version = "0.36.3"