Set MSRV to 1.88.0 and drop use of unstable feature.

Author: m-ou-se

Cargo.toml

@@ -7,6 +7,7 @@ edition = "2024"
 repository = "https://github.com/m-ou-se/inline-python"
 keywords = ["python", "inline", "embed", "macro"]
 autoexamples = false
+rust-version = "1.88.0"
 
 [dependencies]
 inline-python-macros = { version = "0.16.0", path = "./macros" }

README.md

@@ -22,9 +22,6 @@ fn main() {
 
 Use the `python!{..}` macro to write Python code directly in your Rust code.
 
-_NOTE:_ Rust **nightly** toolchain is required. Feature `proc_macro_span` is still unstable, for more details check out [issue #54725 - 
-Tracking issue for `proc_macro::Span` inspection APIs](https://github.com/rust-lang/rust/issues/54725)
-
 ### Using Rust variables
 
 To reference Rust variables, use `'var`, as shown in the example above.

ct-python/Cargo.toml

@@ -6,6 +6,7 @@ license = "BSD-2-Clause"
 edition = "2024"
 repository = "https://github.com/m-ou-se/inline-python"
 keywords = ["python", "macro", "generate", "compile-time"]
+rust-version = "1.88.0"
 
 [lib]
 proc-macro = true

ct-python/src/lib.rs

@@ -38,8 +38,6 @@
 //!
 //! [1]: https://docs.rs/inline-python/#syntax-issues
 
-#![feature(proc_macro_span)]
-
 use proc_macro::{Span, TokenStream};
 use pyo3::{PyObject, PyResult, Python, prelude::*};
 use std::{ffi::CString, ptr::null_mut, str::FromStr};

macros/Cargo.toml

@@ -5,6 +5,7 @@ description = "Macros for the inline-python crate"
 license = "BSD-2-Clause"
 edition = "2024"
 repository = "https://github.com/m-ou-se/inline-python"
+rust-version = "1.88.0"
 
 [lib]
 proc-macro = true

macros/src/lib.rs

@@ -1,7 +1,5 @@
 //! Helper crate for `inline-python`.
 
-#![feature(proc_macro_span)]
-
 extern crate proc_macro;
 
 use proc_macro::{Literal, Span, TokenStream, TokenTree};

src/lib.rs

@@ -18,9 +18,6 @@
 //!
 //! Use the `python!{..}` macro to write Python code directly in your Rust code.
 //!
-//! _NOTE:_ This crate uses the **unstable** [`proc_macro_span` feature](https://github.com/rust-lang/rust/issues/54725),
-//! so it will only compile on Rust **nightly**.
-//!
 //! ## Using Rust variables
 //!
 //! To reference Rust variables, use `'var`, as shown in the example above.