Adapt to new packaging

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

rust-lab.spec

@@ -6,7 +6,7 @@
 
 Name:           rust-%{crate}
 Version:        0.6.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Tools for converting RGB colors to the CIE-L*a*b* color space
 
 License:        MIT
@@ -17,23 +17,40 @@ ExclusiveArch:  %{rust_arches}
 
 BuildRequires:  rust-packaging
 %if %{with check}
-# [dev-dependencies]
-BuildRequires:  (crate(rand) >= 0.5.0 with crate(rand) < 0.6.0)
+BuildRequires:  (crate(rand/default) >= 0.5.0 with crate(rand/default) < 0.6.0)
 %endif
 
-%description
-%{summary}.
+%global _description \
+Tools for converting RGB colors to the CIE-L*a*b* color space, and compating\
+differences in color.
+
+%description %{_description}
 
 %package        devel
 Summary:        %{summary}
 BuildArch:      noarch
 
-%description    devel
-Tools for converting RGB colors to the CIE-L*a*b* color space, and
-comparing differences in color.
+%description    devel %{_description}
 
 This package contains library source intended for building other packages
-which use %{crate} from crates.io.
+which use "%{crate}" crate.
+
+%files          devel
+%license LICENSE
+%doc README.md CHANGELOG.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 "default" feature of "%{crate}" crate.
+
+%files       -n %{name}+default-devel
+%ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
 
 %prep
 %autosetup -n %{crate}-%{version} -p1
@@ -50,11 +67,9 @@ which use %{crate} from crates.io.
 %cargo_test
 %endif
 
-%files          devel
-%license LICENSE
-%doc README.md CHANGELOG.md
-%{cargo_registry}/%{crate}-%{version}/
-
 %changelog
+* Sat Nov 03 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.6.0-2
+- Adapt to new packaging
+
 * Mon Oct 01 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.6.0-1
 - Initial package