From 7b14f181b21b37eb89d8d4f1228606a7c0476e87 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Agust=C3=ADn=20Borgna?=
 <121866228+aborgna-q@users.noreply.github.com>
Date: Thu, 25 Jul 2024 14:05:57 +0100
Subject: [PATCH] chore: Replace build.rs with lint config in Cargo.toml (#509)

Rust 1.80 [just
dropped](https://blog.rust-lang.org/2024/07/25/Rust-1.80.0.html), adding
a lint option that allows us to avoid the `build.rs` definition added in
https://github.com/CQCL/tket2/pull/386.
(The nightly lint got updated before hitting beta, so there shouldn't be
compatibility problems there).
---
 Cargo.toml     | 1 +
 tket2/build.rs | 7 -------
 2 files changed, 1 insertion(+), 7 deletions(-)
 delete mode 100644 tket2/build.rs

diff --git a/Cargo.toml b/Cargo.toml
index 93d7c29e..225c434d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,6 +20,7 @@ repository = "https://github.com/CQCL/tket2"
 license = "Apache-2.0"
 
 [workspace.lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(ci_run)'] }
 missing_docs = "warn"
 
 [workspace.dependencies]
diff --git a/tket2/build.rs b/tket2/build.rs
deleted file mode 100644
index f87983e4..00000000
--- a/tket2/build.rs
+++ /dev/null
@@ -1,7 +0,0 @@
-//! Build script for the `tket2` crate.
-
-fn main() {
-    // We use a `ci_run` RUSTFLAG to indicate that we are running a CI check,
-    // so we can reject debug code using some tools defined in `utils.rs`.
-    println!("cargo:rustc-check-cfg=cfg(ci_run)");
-}