Add virtual path abstraction layer (#9245)

src/main.rs

@@ -152,6 +152,18 @@ fn main() -> Result<()> {
         engine_state.add_env_var("NU_LIB_DIRS".into(), Value::List { vals, span });
     }
 
+    start_time = std::time::Instant::now();
+    // First, set up env vars as strings only
+    gather_parent_env_vars(&mut engine_state, &init_cwd);
+    perf(
+        "gather env vars",
+        start_time,
+        file!(),
+        line!(),
+        column!(),
+        use_color,
+    );
+
     if parsed_nu_cli_args.no_std_lib.is_none() {
         load_standard_library(&mut engine_state)?;
     }
@@ -243,18 +255,6 @@ fn main() -> Result<()> {
         use_color,
     );
 
-    start_time = std::time::Instant::now();
-    // First, set up env vars as strings only
-    gather_parent_env_vars(&mut engine_state, &init_cwd);
-    perf(
-        "gather env vars",
-        start_time,
-        file!(),
-        line!(),
-        column!(),
-        use_color,
-    );
-
     if let Some(commands) = parsed_nu_cli_args.commands.clone() {
         run_commands(
             &mut engine_state,

src/tests/test_stdlib.rs

@@ -2,15 +2,12 @@ use crate::tests::{fail_test, run_test_std, TestResult};
 
 #[test]
 fn library_loaded() -> TestResult {
-    run_test_std(
-        "help std | lines | first 1 | to text",
-        "std.nu, `used` to load all standard library components",
-    )
+    run_test_std("$nu.scope.modules | where name == 'std' | length", "1")
 }
 
 #[test]
 fn prelude_loaded() -> TestResult {
-    run_test_std("std help commands | where name == open | length", "1")
+    run_test_std("shells | length", "1")
 }
 
 #[test]