Remove direct use of UnpinnedArray in Compilation

bootstrap/library.zig

@@ -218,6 +218,16 @@ pub fn PinnedArray(comptime T: type) type {
             array.length += count;
             @memcpy(array.pointer[index..][0..count], items);
         }
+
+        pub fn insert(array: *@This(), index: u32, item: T) void {
+            assert(index < array.length);
+            array.ensure_capacity(1);
+            const src = array.slice()[index..];
+            array.length += 1;
+            const dst = array.slice()[index + 1..];
+            copy_backwards(T, dst, src);
+            array.slice()[index] = item;
+        }
     };
 }
 

bootstrap/main.zig

@@ -33,7 +33,7 @@ pub fn main() !void {
     //     assert(arguments.len > 0);
     //     const home_dir = std.posix.getenv("HOME") orelse unreachable;
     //     const timestamp = std.time.milliTimestamp();
-    //     var argument_list = UnpinnedArray(u8){};
+    //     var argument_list = PinnedArray(u8){};
     //     for (arguments) |arg| {
     //         argument_list.append_slice(context.my_allocator, arg) catch {};
     //         argument_list.append(context.my_allocator, ' ') catch {};