Adapt to new packaging

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

rust-memoffset.spec

@@ -7,32 +7,49 @@
 
 Name:           rust-%{crate}
 Version:        0.2.1
-Release:        4%{?dist}
-Summary:        C-like offset_of functionality for Rust structs.
+Release:        5%{?dist}
+Summary:        C-like offset_of functionality for Rust structs
 
 License:        MIT
 URL:            https://crates.io/crates/memoffset
 Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{crate}-%{version}.crate
-
 # https://github.com/Gilnaa/memoffset/pull/3
-Patch1:         0001-Add-allow-const_err-on-test-offset_index_out_of_boun.patch
+Patch0001:      0001-Add-allow-const_err-on-test-offset_index_out_of_boun.patch
 
 ExclusiveArch:  %{rust_arches}
 
 BuildRequires:  rust-packaging
 
-%description
-%{summary}.
+%global _description \
+C-like offset_of functionality for Rust structs.
+
+%description %{_description}
 
 %package        devel
 Summary:        %{summary}
 BuildArch:      noarch
 
-%description    devel
-%{summary}.
+%description    devel %{_description}
+
+This package contains library source intended for building other packages
+which use "%{crate}" crate.
+
+%files          devel
+%license LICENSE
+%doc README.md
+%{cargo_registry}/%{crate}-%{version}/
+
+%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 %{crate} from crates.io.
+which use "default" feature of "%{crate}" crate.
+
+%files       -n %{name}+default-devel
+%ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
 
 %prep
 %autosetup -n %{crate}-%{version} -p1
@@ -49,12 +66,10 @@ which use %{crate} from crates.io.
 %cargo_test
 %endif
 
-%files          devel
-%license
-%doc README.md
-%{cargo_registry}/%{crate}-%{version}/
-
 %changelog
+* Sat Oct 27 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.2.1-5
+- Adapt to new packaging
+
 * Sun Oct 07 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.2.1-4
 - Run tests in infrastructure