feat: allow declaring executable target as [executable]

scarb/src/core/manifest/toml_manifest.rs

@@ -46,6 +46,7 @@ pub struct TomlManifest {
     pub dependencies: Option<BTreeMap<PackageName, MaybeTomlWorkspaceDependency>>,
     pub dev_dependencies: Option<BTreeMap<PackageName, MaybeTomlWorkspaceDependency>>,
     pub lib: Option<TomlTarget<TomlLibTargetParams>>,
+    pub executable: Option<TomlTarget<TomlExecutableTargetParams>>,
     pub cairo_plugin: Option<TomlTarget<TomlCairoPluginTargetParams>>,
     pub test: Option<Vec<TomlTarget<TomlExternalTargetParams>>>,
     pub target: Option<BTreeMap<TargetKind, Vec<TomlTarget<TomlExternalTargetParams>>>>,
@@ -295,6 +296,10 @@ pub struct TomlLibTargetParams {
     pub sierra_text: Option<bool>,
 }
 
+#[derive(Debug, Default, Deserialize, Serialize)]
+#[serde(rename_all = "kebab-case")]
+pub struct TomlExecutableTargetParams {}
+
 #[derive(Debug, Default, Deserialize, Serialize)]
 #[serde(rename_all = "kebab-case")]
 pub struct TomlCairoPluginTargetParams {
@@ -634,6 +639,14 @@ impl TomlManifest {
             None,
         )?);
 
+        targets.extend(Self::collect_target(
+            TargetKind::EXECUTABLE,
+            self.executable.as_ref(),
+            &package_name,
+            root,
+            None,
+        )?);
+
         for (kind, ext_toml) in self
             .target
             .iter()

scarb/src/core/publishing/manifest_normalization.rs

@@ -38,6 +38,7 @@ pub fn prepare_manifest_for_publish(pkg: &Package) -> Result<TomlManifest> {
         dependencies,
         dev_dependencies: None,
         lib: None,
+        executable: None,
         cairo_plugin,
         test: None,
         target: None,

scarb/tests/build_targets.rs

@@ -1119,3 +1119,32 @@ fn test_executable_compiler_creates_output_files() {
     t.child("target/dev/executable_test.executable.json")
         .assert(predicates::path::exists());
 }
+
+#[test]
+fn compile_executable_target_can_use_short_declaration() {
+    let t = TempDir::new().unwrap();
+    ProjectBuilder::start()
+        .name("executable_test")
+        .dep_cairo_test()
+        .dep_starknet()
+        .dep_cairo_execute()
+        .manifest_extra(indoc! {r#"
+            [executable]
+        "#})
+        .lib_cairo(indoc! {r#"
+            #[executable]
+            fn main() -> felt252 {
+                42
+            }
+        "#})
+        .build(&t);
+
+    Scarb::quick_snapbox()
+        .arg("build")
+        .current_dir(&t)
+        .assert()
+        .success();
+
+    t.child("target/dev/executable_test.executable.json")
+        .assert(predicates::path::exists());
+}