Switch release builds back to thin LTO

This was placed in a separate patch instead of merging into the existing
patch because that one is actually pulled from upstream, so we'd be
liable to accidentally drop the change when rust-coreutils is updated in
the future.

infrastructure/apertis-issues#431

Signed-off-by: Ryan Gonzalez <ryan.gonzalez@collabora.com>

debian/patches/apertis/Switch-release-builds-back-to-thin-LTO.patch

+From: Ryan Gonzalez <ryan.gonzalez@collabora.com>
+Date: Tue, 17 Sep 2024 16:39:27 -0500
+Subject: Switch release builds back to thin LTO
+
+Using full LTO results in the loss of individual crate compilation unit
+names in the debuginfo, which interferes with our copyright generation.
+Rust's default behavior is *already* thin LTO, which only takes up 1MiB
+of extra space but avoids this issue.
+
+(This seems to work on newer Rust releases and thus either specific to
+the Debian package or fixed in rustc/LLVM, so it might be worth re-
+evaluating the situation once the version in Debian is updated.)
+
+Signed-off-by: Ryan Gonzalez <ryan.gonzalez@collabora.com>
+---
+ Cargo.toml | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/Cargo.toml b/Cargo.toml
+index 88a712a..c99ca67 100644
+--- a/Cargo.toml
++++ b/Cargo.toml
+@@ -428,6 +428,5 @@ path = "src/bin/uudoc.rs"
+ required-features = ["uudoc"]
+ 
+ [profile.release]
+-lto = true
+ opt-level = "z"
+ panic = "abort"

debian/patches/series

@@ -36,3 +36,4 @@ apertis/HACK-cp-mv-add-dummy-missing-arguments.patch
 apertis/Add-hack-for-missing-argument-to-mkdir.patch
 apertis/tsort-Switch-to-BTreeHash-and-BTreeSet.patch
 apertis/size-optimize.patch
+apertis/Switch-release-builds-back-to-thin-LTO.patch