rename env var to remove experimental prefix

Author: leighmcculloch

Makefile

@@ -33,7 +33,7 @@ build-libs: fmt
 build-test-wasms: fmt
 	# Build the test wasms with MSRV by default, with some meta disabled for
 	# binary stability for tests.
-	SOROBAN_SDK_BUILD_SYSTEM_SUPPORTS_EXPERIMENTAL_SPEC_SHAKING_V2=1 \
+	SOROBAN_SDK_BUILD_SYSTEM_SUPPORTS_SPEC_SHAKING_V2=1 \
 	RUSTUP_TOOLCHAIN=$(TEST_CRATES_RUSTUP_TOOLCHAIN) \
 	RUSTFLAGS='--cfg soroban_sdk_internal_no_rssdkver_meta' \
 		cargo hack build --release --target wasm32v1-none $(foreach c,$(TEST_CRATES),--package $(c)) ; \
@@ -67,7 +67,7 @@ expand-tests: build-test-wasms
       RUSTFLAGS='--cfg soroban_sdk_internal_no_rssdkver_meta' \
       cargo expand --package $$package --tests --target x86_64-unknown-linux-gnu | rustfmt > tests-expanded/$${package}_tests.rs; \
 		echo "Expanding $$package for wasm32v1-none target without tests"; \
-    SOROBAN_SDK_BUILD_SYSTEM_SUPPORTS_EXPERIMENTAL_SPEC_SHAKING_V2=1 \
+    SOROBAN_SDK_BUILD_SYSTEM_SUPPORTS_SPEC_SHAKING_V2=1 \
     RUSTUP_TOOLCHAIN=$(TEST_CRATES_RUSTUP_TOOLCHAIN) \
       RUSTFLAGS='--cfg soroban_sdk_internal_no_rssdkver_meta' \
 			cargo expand --package $$package --release --target wasm32v1-none | rustfmt > tests-expanded/$${package}_wasm32v1-none.rs; \

soroban-sdk/build.rs

@@ -19,7 +19,7 @@ pub fn main() {
     // When the experimental_spec_shaking_v2 feature is enabled, check for an env var from the
     // build system (Stellar CLI) that indicates it supports spec optimization using markers.
     if std::env::var("CARGO_FEATURE_EXPERIMENTAL_SPEC_SHAKING_V2").is_ok() {
-        let env_name = "SOROBAN_SDK_BUILD_SYSTEM_SUPPORTS_EXPERIMENTAL_SPEC_SHAKING_V2";
+        let env_name = "SOROBAN_SDK_BUILD_SYSTEM_SUPPORTS_SPEC_SHAKING_V2";
         println!("cargo::rerun-if-env-changed={env_name}");
         if std::env::var(env_name).ok().as_deref() == None
             && std::env::var("CARGO_CFG_TARGET_FAMILY").unwrap_or_default() == "wasm"

soroban-sdk/src/_features.rs

@@ -117,7 +117,7 @@
 //! This feature requires building with `stellar contract build` from
 //! `stellar-cli` v25.2.0 or newer. Building directly with `cargo build` will
 //! produce a build error unless the
-//! `SOROBAN_SDK_BUILD_SYSTEM_SUPPORTS_EXPERIMENTAL_SPEC_SHAKING_V2` environment variable is
+//! `SOROBAN_SDK_BUILD_SYSTEM_SUPPORTS_SPEC_SHAKING_V2` environment variable is
 //! set.
 //!
 //! [`contracttype`]: crate::contracttype