Fix docs.rs docs build

Author: RAprogramm

CHANGELOG.md

@@ -7,6 +7,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.2.14] - 2025-10-03
+### Fixed
+- Guarded the nightly-only `doc_auto_cfg` attribute behind a compiler channel
+  probe so documentation builds on docs.rs no longer fail on stable toolchains.
+
+### Changed
+- Added a lightweight build-time check using `version_check` to conditionally
+  enable nightly-only documentation features without impacting stable
+  consumers.
+
 ## [0.2.13] - 2025-10-01
 ### Changed
 - Upgraded to `masterror` 0.24 across the workspace, ensuring the SDK and demo

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "telegram-webapp-sdk"
-version = "0.2.13"
+version = "0.2.14"
 rust-version = "1.90"
 edition = "2024"
 description = "Telegram WebApp SDK for Rust"
@@ -57,6 +57,9 @@ urlencoding = { version = "2", optional = true }
 inventory = { workspace = true, optional = true }
 toml = "0.9"
 
+[build-dependencies]
+version_check = "0.9"
+
 [dependencies.yew]
 version = "0.21"
 optional = true

Cargo.toml

@@ -0,0 +1,7 @@
+fn main() {
+    println!("cargo:rustc-check-cfg=cfg(has_doc_auto_cfg)");
+
+    if version_check::Channel::read().is_some_and(|channel| channel.supports_features()) {
+        println!("cargo:rustc-cfg=has_doc_auto_cfg");
+    }
+}

build.rs

@@ -1,5 +1,5 @@
 #![doc = include_str!("../README.md")]
-#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+#![cfg_attr(all(docsrs, has_doc_auto_cfg), feature(doc_auto_cfg))]
 
 pub mod api;
 pub mod core;