diff --git a/rust-rustc-demangle.spec b/rust-rustc-demangle.spec
index 7cf2855..bd0cb76 100644
--- a/rust-rustc-demangle.spec
+++ b/rust-rustc-demangle.spec
@@ -1,25 +1,23 @@
-# Generated by rust2rpm 18
+# Generated by rust2rpm 23
 %bcond_without check
 %global debug_package %{nil}
 
 %global crate rustc-demangle
 
-Name:           rust-%{crate}
+Name:           rust-rustc-demangle
 Version:        0.1.21
 Release:        %autorelease
 Summary:        Rust compiler symbol demangling
 
 # Upstream license specification: MIT/Apache-2.0
-License:        MIT or ASL 2.0
+License:        MIT OR Apache-2.0
 URL:            https://crates.io/crates/rustc-demangle
 Source:         %{crates_source}
+# Manually created patch for downstream crate metadata changes
+# * disable LTO to work around LLVM crashes on ppc64le
+Patch:          rustc-demangle-fix-metadata.diff
 
-ExclusiveArch:  %{rust_arches}
-%if %{__cargo_skip_build}
-BuildArch:      noarch
-%endif
-
-BuildRequires:  rust-packaging
+BuildRequires:  rust-packaging >= 21
 
 %global _description %{expand:
 Rust compiler symbol demangling.}
@@ -32,13 +30,14 @@ BuildArch:      noarch
 
 %description    devel %{_description}
 
-This package contains library source intended for building other packages
-which use "%{crate}" crate.
+This package contains library source intended for building other packages which
+use the "%{crate}" crate.
 
 %files          devel
-%license LICENSE-MIT LICENSE-APACHE
-%doc README.md
-%{cargo_registry}/%{crate}-%{version_no_tilde}/
+%license %{crate_instdir}/LICENSE-APACHE
+%license %{crate_instdir}/LICENSE-MIT
+%doc %{crate_instdir}/README.md
+%{crate_instdir}/
 
 %package     -n %{name}+default-devel
 Summary:        %{summary}
@@ -46,11 +45,11 @@ BuildArch:      noarch
 
 %description -n %{name}+default-devel %{_description}
 
-This package contains library source intended for building other packages
-which use "default" feature of "%{crate}" crate.
+This package contains library source intended for building other packages which
+use the "default" feature of the "%{crate}" crate.
 
 %files       -n %{name}+default-devel
-%ghost %{cargo_registry}/%{crate}-%{version_no_tilde}/Cargo.toml
+%ghost %{crate_instdir}/Cargo.toml
 
 %prep
 %autosetup -n %{crate}-%{version_no_tilde} -p1
diff --git a/.rust2rpm.conf b/rust2rpm.conf
similarity index 100%
rename from .rust2rpm.conf
rename to rust2rpm.conf
diff --git a/rustc-demangle-fix-metadata.diff b/rustc-demangle-fix-metadata.diff
new file mode 100644
index 0000000..6afbd68
--- /dev/null
+++ b/rustc-demangle-fix-metadata.diff
@@ -0,0 +1,11 @@
+--- rustc-demangle-0.1.21/Cargo.toml	1970-01-01T00:00:01+00:00
++++ rustc-demangle-0.1.21/Cargo.toml	2022-12-15T13:04:12.788012+00:00
+@@ -20,8 +20,6 @@
+ readme = "README.md"
+ license = "MIT/Apache-2.0"
+ repository = "https://github.com/alexcrichton/rustc-demangle"
+-[profile.release]
+-lto = true
+ [dependencies.compiler_builtins]
+ version = "0.1.2"
+ optional = true