enable aztec macro via an environment variable

Cargo.toml

@@ -96,7 +96,7 @@ getrandom = "0.2"
 
 
 cfg-if = "1.0.0"
-clap = { version = "4.3.19", features = ["derive"] }
+clap = { version = "4.3.19", features = ["derive", "env"] }
 codespan = { version = "0.11.1", features = ["serialization"] }
 codespan-lsp = "0.11.1"
 codespan-reporting = "0.11.1"

compiler/noirc_driver/src/lib.rs

@@ -63,10 +63,17 @@ pub struct CompileOptions {
     pub silence_warnings: bool,
 
     /// Enables the aztec macro preprocessor
-    #[arg(long, hide = true)]
+    #[arg(long, env = AZTEC_MACRO_ENV_VAR, hide = true)]
     pub aztec_macro: bool,
 }
 
+pub(crate) const AZTEC_MACRO_ENV_VAR: &str = "AZTEC_MACROS";
+
+/// Returns true if the `AZTEC_MACROS` environment variable is set.
+pub fn is_aztec_environment_variable_set() -> bool {
+    std::env::var(AZTEC_MACRO_ENV_VAR).is_ok()
+}
+
 /// Helper type used to signify where only warnings are expected in file diagnostics
 pub type Warnings = Vec<FileDiagnostic>;