Use unsafe block for setting environment variables in tests and commands

Author: darmie

crates/zynml/tests/autovec.rs

@@ -31,7 +31,7 @@ fn build(src: &str, dump: &str) -> (f64, usize) {
     std::fs::create_dir_all(&dir).unwrap();
     // Process-global, and these tests share a process, so each one
     // points it at its own directory immediately before compiling.
-    std::env::set_var("ZYNTAX_DUMP_HIR_DIR", &dir);
+    unsafe { std::env::set_var("ZYNTAX_DUMP_HIR_DIR", &dir) };
 
     let plugins = Path::new(env!("CARGO_MANIFEST_DIR")).join("../../plugins/target/zrtl");
     let cfg = ZynMLConfig {

crates/zyntax_cli/src/commands.rs

@@ -1019,7 +1019,7 @@ fn eval_input(
         LoweringConfig::default(),
     );
 
-    std::env::set_var("SKIP_TYPE_CHECK", "1");
+    unsafe { std::env::set_var("SKIP_TYPE_CHECK", "1") };
 
     let mut hir_module = lowering_ctx
         .lower_program(&mut typed_program)

crates/zyntax_cli/src/formats/zyn_grammar.rs

@@ -545,7 +545,7 @@ fn lower_to_hir(
     );
 
     // Skip type checking (parser already produced typed AST)
-    std::env::set_var("SKIP_TYPE_CHECK", "1");
+    unsafe { std::env::set_var("SKIP_TYPE_CHECK", "1") };
 
     let mut hir_module = lowering_ctx
         .lower_program(&mut program)