Example application fails to build with "could not find `helpers` in `uefi`"

[old-df38257622]

hello! I'm trying to build the example application and I seem to have an issue that I can't find any documentation on. I've followed the 2.1 Creating a UEFI Application section to the letter, but I get the below error when trying to build it:

letters@DESKTOP-RGK8TVG:~/src/rsfi$ cargo build --target x86_64-unknown-uefi
   Compiling bitflags v2.5.0
   Compiling ptr_meta v0.2.0
   Compiling uguid v2.2.0
   Compiling bit_field v0.10.2
   Compiling uefi-raw v0.5.1
   Compiling ucs2 v0.3.3
   Compiling log v0.4.21
   Compiling cfg-if v1.0.0
   Compiling uefi v0.27.0
   Compiling uefi-services v0.24.0
   Compiling rsfi v0.1.0 (/home/letters/src/rsfi)
error[E0433]: failed to resolve: could not find `helpers` in `uefi`
 --> src/main.rs:9:11
  |
9 |     uefi::helpers::init(&mut system_table).unwrap();
  |           ^^^^^^^ could not find `helpers` in `uefi`

For more information about this error, try `rustc --explain E0433`.
error: could not compile `rsfi` (bin "rsfi") due to 1 previous error

I'm using Debian on WSL2 if that makes any difference. My main.rs, rust-toolchain.toml, etc. all match the example program to the letter as far as I can tell. Any help is appreciated, thanks!

[nicholasbishop]

This is due to a recent API change on the main branch. It's not yet released, but the book is built from the main rather than the latest release. To fix it, change that line to uefi_services::init(&mut system_table).unwrap();, and add uefi-services as a dep in Cargo.toml.

See https://github.com/rust-osdev/uefi-rs/tree/eaa146fbc02195a9d6846caeb033b55159a9da9b/template for an example.

Sorry about the confusion here, we'll do a new release soon to resolve this mismatch.

[old-df38257622]

Fixed, thank you!

[phip1611]

See #1140 - soon the problem will be gone :)