Update docs for the switch from nightly to stable

Author: nicholasbishop

CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## uefi - [Unreleased]
 
+As of this release, the UEFI crates work on the stable channel. This requires
+Rust 1.68 or higher.
+
 ### Added
 
 - Added the `ComponentName1` and `ComponentName2` protocols. The `ComponentName`

book/src/tutorial/building.md

@@ -1,24 +1,18 @@
 # Building
 
-## Nightly toolchain
+## Toolchain
 
-Rust's nightly toolchain is currently required because uefi-rs uses some
-unstable features.
-
-The easiest way to set this up is using a [rustup toolchain file]. In
-the root of your repository, add `rust-toolchain.toml`:
+In order to compile for UEFI, an appropriate target must be installed. The
+easiest way to set this up is using a [rustup toolchain file]. In the root of
+your repository, add `rust-toolchain.toml`:
 
 ```toml
 [toolchain]
-channel = "nightly"
-targets = ["x86_64-unknown-uefi"]
+targets = ["aarch64-unknown-uefi", "i686-unknown-uefi", "x86_64-unknown-uefi"]
 ```
 
-Here we have specified the `x86_64-unknown-uefi` target; there are also
-`i686-unknown-uefi` and `aarch64-unknown-uefi` targets available.
-
-Note that nightly releases can sometimes break, so you might opt to pin
-to a specific release. For example, `channel = "nightly-2022-11-10"`.
+Here we have specified all three of the currently-supported UEFI targets; you
+can remove some if you don't need them.
 
 ## Build the application
 

template/README.md

@@ -8,7 +8,7 @@ UEFI application developed using `uefi-rs`.
 
 ## File structure
 
-- [`rust-toolchain.toml`](rust-toolchain.toml) sets the nightly channel.
+- [`rust-toolchain.toml`](rust-toolchain.toml) adds the UEFI targets.
 - [`Cargo.toml`](./Cargo.toml) shows the necessary dependencies.
 - [`src/main.rs`](./src/main.rs) has a minimal entry point that
   initializes the `uefi-services` crate and exits successfully.

uefi/README.md

@@ -49,10 +49,10 @@ For additional information, refer to the [UEFI specification][spec].
 
 ## MSRV
 
-The uefi-rs crates currently require some [unstable features].
-The nightly MSRV is currently 2022-11-22.
+The minimum supported Rust version is currently 1.68, which is the first Rust
+release that fully supports all necessary features on the stable channel.
 
-[unstable features]: https://github.com/rust-osdev/uefi-rs/issues/452
+In the future, our policy will be to support at least the past two stable releases.
 
 ## License
 

uefi/src/lib.rs

@@ -54,11 +54,7 @@
 //! - `panic-on-logger-errors` (enabled by default): Panic if a text
 //!   output error occurs in the logger.
 //! - `unstable`: Enable functionality that depends on [unstable
-//!   features] in the nightly compiler. Note that currently the `uefi`
-//!   crate _always_ requires unstable features even if the `unstable`
-//!   feature is not enabled, but once a couple more required features
-//!   are stabilized we intend to make the `uefi` crate work on the
-//!   stable channel by default.
+//!   features] in the nightly compiler.
 //!   As example, in conjunction with the `alloc`-feature, this gate allows
 //!   the `allocator_api` on certain functions.
 //!