In EPEL9, ignore a doctest that requires a newer Rust compiler

0001-EPEL9-Ignore-doctests-that-require-very-recent-Rust-.patch

@@ -0,0 +1,33 @@
+From cc8baaf562c4d3bda50db88da33e8772c1f620cd Mon Sep 17 00:00:00 2001
+From: "Benjamin A. Beasley" <code@musicinmybrain.net>
+Date: Thu, 10 Oct 2024 17:43:14 -0400
+Subject: [PATCH] EPEL9: Ignore doctests that require very recent Rust
+ compilers
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+In this crate, some doctests use Rust features from versions newer than
+the MSRV. It’s therefore necessary to ignore some of them on EPEL9. If
+this patch becomes too unwieldy, we could choose to start skipping
+doctests there entirely.
+---
+ src/lib.rs | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/lib.rs b/src/lib.rs
+index 3213b7b..96f7e83 100644
+--- a/src/lib.rs
++++ b/src/lib.rs
+@@ -20,7 +20,7 @@
+ //! Being able to construct `ConstTypeId` in const makes it suitable for use
+ //! cases that rely on static promotion:
+ //!
+-//! ```
++//! ```ignore
+ //! use std::fmt::{self, Debug, Display};
+ //! use std::ptr;
+ //! use typeid::ConstTypeId;
+-- 
+2.46.2
+

rust-typeid.spec

@@ -12,6 +12,12 @@ Summary:        Const TypeId and non-'static TypeId
 License:        MIT OR Apache-2.0
 URL:            https://crates.io/crates/typeid
 Source:         %{crates_source}
+# * EPEL9: Ignore doctests that require very recent Rust compilers
+# * In this crate, some doctests use Rust features from versions newer than the
+#   MSRV. It’s therefore necessary to ignore some of them on EPEL9. If this
+#   patch becomes too unwieldy, we could choose to start skipping doctests there
+#   entirely.
+Patch1009:     0001-EPEL9-Ignore-doctests-that-require-very-recent-Rust-.patch
 
 BuildRequires:  cargo-rpm-macros >= 24
 
@@ -48,7 +54,14 @@ use the "default" feature of the "%{crate}" crate.
 %ghost %{crate_instdir}/Cargo.toml
 
 %prep
-%autosetup -n %{crate}-%{version} -p1
+%autosetup -n %{crate}-%{version} -N
+# NOTE: The -p1 in %%autosetup, above, must be replaced with -N so that we can
+# do conditional patching, below.
+%autopatch -M 999 -p1
+# We reserved patch number 1000+<N> for EPEL<N>.
+%if 0%{?el9}
+%patch -P 1009 -p1
+%endif
 %cargo_prep
 
 %generate_buildrequires

rust2rpm.toml

@@ -0,0 +1,26 @@
+[[package.extra-patches]]
+number = 1009
+file = "0001-EPEL9-Ignore-doctests-that-require-very-recent-Rust-.patch"
+comments = [
+    "EPEL9: Ignore doctests that require very recent Rust compilers",
+    """\
+    In this crate, some doctests use Rust features from versions newer than \
+    the MSRV. It’s therefore necessary to ignore some of them on EPEL9. If \
+    this patch becomes too unwieldy, we could choose to start skipping \
+    doctests there entirely.\
+    """,
+]
+
+[scripts.prep]
+pre = [
+    "# NOTE: The -p1 in %%autosetup, above, must be replaced with -N so that we can",
+    "# do conditional patching, below.",
+    "%autopatch -M 999 -p1",
+    "# We reserved patch number 1000+<N> for EPEL<N>.",
+    "%if 0%{?el9}",
+    # EPEL9 rpm does not support "%patch <N>", and would quietly attempt and
+    # fail to re-apply Patch0 instead of applying the desired patch. We *need*
+    # to use "%patch -P <N>" instead.
+    "%patch -P 1009 -p1",
+    "%endif",
+]