diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/number_prefix-0.2.7.crate
diff --git a/rust-number_prefix.spec b/rust-number_prefix.spec
new file mode 100644
index 0000000..f30bd1b
--- /dev/null
+++ b/rust-number_prefix.spec
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+# Generated by rust2rpm
+%bcond_without check
+%global debug_package %{nil}
+
+%global crate number_prefix
+
+Name:           rust-%{crate}
+Version:        0.2.7
+Release:        1%{?dist}
+Summary:        Library for formatting numeric prefixes: kilo, giga, kibi
+
+# https://github.com/ogham/rust-number-prefix/issues/3
+License:        MIT
+URL:            https://crates.io/crates/number_prefix
+Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{crate}-%{version}.crate
+
+ExclusiveArch:  %{rust_arches}
+
+BuildRequires:  rust-packaging
+# [dependencies]
+BuildRequires:  (crate(num-traits) >= 0.1.36 with crate(num-traits) < 0.2.0)
+
+%description
+%{summary}.
+
+%package        devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description    devel
+Library for formatting numeric prefixes: kilo, giga, kibi.
+
+This package contains library source intended for building other packages
+which use %{crate} from crates.io.
+
+%prep
+%autosetup -n %{crate}-%{version} -p1
+%cargo_prep
+
+%build
+%cargo_build
+
+%install
+%cargo_install
+
+%if %{with check}
+%check
+%cargo_test
+%endif
+
+%files          devel
+%doc README.md
+%{cargo_registry}/%{crate}-%{version}/
+
+%changelog
+* Fri Nov 17 2017 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.2.7-1
+- Initial package
diff --git a/sources b/sources
new file mode 100644
index 0000000..ce4d268
--- /dev/null
+++ b/sources
@@ -0,0 +1 @@
+SHA512 (number_prefix-0.2.7.crate) = 4cd656d199bcfb9a0c6c3e54a7f1730268f400324a723b3fb33db0645bb3bea1e7d60f8a4288946de80cc9826837d84a0b649cd9694c4d69d4dde7a243317485