esp-wifi feature esp32s3 does not compile in no-std

[nydragon]

Title says it all, compiling with esp-wifi as a dependency fails, as its dependency "managed" needs the std. Does anyone have a solution idea?

error[E0463]: can't find crate for `std`
 --> /home/nico/.cargo/registry/src/index.crates.io-6f17d22bba15001f/managed-0.8.0/src/lib.rs:7:1
  |
7 | extern crate std;
  | ^^^^^^^^^^^^^^^^^ can't find crate
  |
  = note: the `xtensa-esp32s3-none-elf` target may not support the standard library
  = help: consider building the standard library from source with `cargo build -Zbuild-std`

For more information about this error, try `rustc --explain E0463`.
error: could not compile `managed` (lib) due to 1 previous error

Dependencies

[dependencies]
embassy-executor = "0.*"
esp-backtrace = { version = "0.*", features = [
  "esp32s3",
  "exception-handler",
  "panic-handler",
  "println",
] }
esp-hal = { version = "0.*", features = ["esp32s3"] }
esp-hal-embassy = { version = "0.*", features = [
  "esp32s3",
  "integrated-timers",
  "time-systimer-16mhz",
] }
esp-println = { version = "0.*", features = ["esp32s3", "log"] }
esp-wifi = { version = "0.*", features = [
  "esp32s3",
  "ble",
  "wifi",
  "log",
  "wifi-logs",
  "smoltcp",
  "coex",
] }
log = { version = "0.*" }
smoltcp = "0.*"

[bjoernQ]

You include smoltcp with default features which includes std (and activates std on managed)

If you want to see which dependency activates which feature you can use cargo tree --edges all

Here is a somewhat outdated stand-alone example: https://github.com/bjoernQ/esp-hal-esp-wifi-example