diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e31f226
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/convert_case-0.4.0.crate
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..aea2ac6
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2020 David Purdum
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/convert_case-fix-metadata.diff b/convert_case-fix-metadata.diff
new file mode 100644
index 0000000..71097e7
--- /dev/null
+++ b/convert_case-fix-metadata.diff
@@ -0,0 +1,23 @@
+--- convert_case-0.4.0/Cargo.toml	2020-05-18T02:16:34+00:00
++++ convert_case-0.4.0/Cargo.toml	2022-12-15T12:49:37.895777+00:00
+@@ -21,18 +21,14 @@
+ categories = ["text-processing"]
+ license = "MIT"
+ repository = "https://github.com/rutrum/convert-case"
+-[profile.release]
+-lto = true
+-codegen-units = 1
+-panic = "abort"
+ [dependencies.rand]
+ version = "^0.7"
+ optional = true
+ [dev-dependencies.strum]
+-version = "0.18.0"
++version = "0.21.0"
+ 
+ [dev-dependencies.strum_macros]
+-version = "0.18.0"
++version = "0.21.0"
+ 
+ [features]
+ random = ["rand"]
diff --git a/rust-convert_case0.4.spec b/rust-convert_case0.4.spec
new file mode 100644
index 0000000..7e947b5
--- /dev/null
+++ b/rust-convert_case0.4.spec
@@ -0,0 +1,100 @@
+# Generated by rust2rpm 25
+%bcond_without check
+%global debug_package %{nil}
+
+%global crate convert_case
+
+Name:           rust-convert_case0.4
+Version:        0.4.0
+Release:        %autorelease
+Summary:        Convert strings into any case
+
+License:        MIT
+URL:            https://crates.io/crates/convert_case
+Source:         %{crates_source}
+Source:         https://raw.githubusercontent.com/rutrum/convert-case/master/LICENSE
+# Manually created patch for downstream crate metadata changes
+# * bump strum and strum_macros from 0.18 to 0.21.0:
+#   https://github.com/rutrum/convert-case/pull/3
+# * disable LTO to work around LLVM crashes on ppc64le:
+#   https://bugzilla.redhat.com/show_bug.cgi?id=2142648
+Patch:          convert_case-fix-metadata.diff
+
+BuildRequires:  cargo-rpm-macros >= 24
+
+%global _description %{expand:
+Convert strings into any case.}
+
+%description %{_description}
+
+%package        devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description    devel %{_description}
+
+This package contains library source intended for building other packages which
+use the "%{crate}" crate.
+
+%files          devel
+%license %{crate_instdir}/LICENSE
+%doc %{crate_instdir}/README.md
+%{crate_instdir}/
+
+%package     -n %{name}+default-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+default-devel %{_description}
+
+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 %{crate_instdir}/Cargo.toml
+
+%package     -n %{name}+rand-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+rand-devel %{_description}
+
+This package contains library source intended for building other packages which
+use the "rand" feature of the "%{crate}" crate.
+
+%files       -n %{name}+rand-devel
+%ghost %{crate_instdir}/Cargo.toml
+
+%package     -n %{name}+random-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+random-devel %{_description}
+
+This package contains library source intended for building other packages which
+use the "random" feature of the "%{crate}" crate.
+
+%files       -n %{name}+random-devel
+%ghost %{crate_instdir}/Cargo.toml
+
+%prep
+%autosetup -n %{crate}-%{version} -p1
+cp -p %{SOURCE1} LICENSE
+%cargo_prep
+
+%generate_buildrequires
+%cargo_generate_buildrequires
+
+%build
+%cargo_build
+
+%install
+%cargo_install
+
+%if %{with check}
+%check
+%cargo_test
+%endif
+
+%changelog
+%autochangelog
diff --git a/sources b/sources
new file mode 100644
index 0000000..10562e8
--- /dev/null
+++ b/sources
@@ -0,0 +1 @@
+SHA512 (convert_case-0.4.0.crate) = e17e92b94b030e39f368ef0dd0288dbb45f77c8ce3034c1a6fd2fd43f38cf10a1af5aa7bebdfb447c335d9593c32dde7262e13f97c271c419c6106cf47dc01e1