diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4352e91
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/time-core-0.1.0.crate
diff --git a/README.md b/README.md
deleted file mode 100644
index 520b50f..0000000
--- a/README.md
+++ /dev/null
@@ -1,3 +0,0 @@
-# rust-time-core
-
-The rust-time-core package
diff --git a/rust-time-core.spec b/rust-time-core.spec
new file mode 100644
index 0000000..e60f5d6
--- /dev/null
+++ b/rust-time-core.spec
@@ -0,0 +1,72 @@
+# Generated by rust2rpm 24
+# * tests can only be run in-tree
+%bcond_with check
+%global debug_package %{nil}
+
+%global crate time-core
+
+Name:           rust-time-core
+Version:        0.1.0
+Release:        %autorelease
+Summary:        Internal implementation details of the 'time' crate
+
+License:        MIT OR Apache-2.0
+URL:            https://crates.io/crates/time-core
+Source:         %{crates_source}
+# Manually created patch for downstream crate metadata changes
+# * improve crate description
+Patch:          time-core-fix-metadata.diff
+
+BuildRequires:  rust-packaging >= 21
+
+%global _description %{expand:
+Internal implementation details of the 'time' crate.}
+
+%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-Apache
+%license %{crate_instdir}/LICENSE-MIT
+%{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
+
+%prep
+%autosetup -n %{crate}-%{version_no_tilde} -p1
+%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..b770dd6
--- /dev/null
+++ b/sources
@@ -0,0 +1 @@
+SHA512 (time-core-0.1.0.crate) = f7e181a40a0052d7aedf78219a46f8876618342c710e819748a87a5bc0728e5b2fc7ba08e38ebfa6a17d6fb60382003bb35745ff1eabac1c8f8b47d186a383db
diff --git a/time-core-fix-metadata.diff b/time-core-fix-metadata.diff
new file mode 100644
index 0000000..c079181
--- /dev/null
+++ b/time-core-fix-metadata.diff
@@ -0,0 +1,11 @@
+--- time-core-0.1.0/Cargo.toml	1970-01-01T00:00:01+00:00
++++ time-core-0.1.0/Cargo.toml	2023-02-19T23:04:20.088433+00:00
+@@ -18,7 +18,7 @@
+     "Jacob Pratt <open-source@jhpratt.dev>",
+     "Time contributors",
+ ]
+-description = "This crate is an implementation detail and should not be relied upon directly."
++description = "Internal implementation details of the 'time' crate."
+ keywords = [
+     "date",
+     "time",