Add the rust std as a custom sysroot

user/shell/Cargo.toml

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+[package]
+name = "shell"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+# std = { path = "../../crates/std" }
+# shared = { path = "../../crates/shared", features = ["user"] }
+# core = { path = "../../crates/std/crates/core" }

user/shell/src/main.rs

@@ -0,0 +1,9 @@
+fn main() {
+    let a = std::env::args();
+    for a in a {
+        println!("Argument: {}", a);
+    }
+    println!(
+        "Hello from PIC program loaded dynamically with custom std and a better justfile, and syscalls ! "
+    );
+}