Adapt to new packaging

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

rust-cexpr.spec

@@ -6,7 +6,7 @@
 
 Name:           rust-%{crate}
 Version:        0.3.3
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        C expression parser and evaluator
 
 # Upstream license specification: Apache-2.0/MIT
@@ -17,25 +17,41 @@ Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{
 ExclusiveArch:  %{rust_arches}
 
 BuildRequires:  rust-packaging
-# [dependencies]
+BuildRequires:  (crate(nom/default) >= 4.0.0 with crate(nom/default) < 5.0.0)
-BuildRequires:  ((crate(nom) >= 4.0.0 with crate(nom) < 5.0.0) with crate(nom/verbose-errors))
+BuildRequires:  (crate(nom/verbose-errors) >= 4.0.0 with crate(nom/verbose-errors) < 5.0.0)
 %if %{with check}
-# [dev-dependencies]
+BuildRequires:  (crate(clang-sys/default) >= 0.13.0 with crate(clang-sys/default) < 0.27.0)
-BuildRequires:  (crate(clang-sys) >= 0.13.0 with crate(clang-sys) < 0.27.0)
 %endif
 
-%description
+%global _description \
-%{summary}.
+A C expression parser and evaluator.
+
+%description %{_description}
 
 %package        devel
 Summary:        %{summary}
 BuildArch:      noarch
 
-%description    devel
+%description    devel %{_description}
-C expression parser and evaluator.
 
 This package contains library source intended for building other packages
-which use %{crate} from crates.io.
+which use "%{crate}" crate.
+
+%files          devel
+%license LICENSE-MIT LICENSE-APACHE
+%{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
@@ -52,11 +68,10 @@ which use %{crate} from crates.io.
 %cargo_test
 %endif
 
-%files          devel
-%license LICENSE-MIT LICENSE-APACHE
-%{cargo_registry}/%{crate}-%{version}/
-
 %changelog
+* Sun Nov 04 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.3.3-2
+- Adapt to new packaging
+
 * Mon Oct 22 2018 Josh Stone <jistone@redhat.com> - 0.3.3-1
 - Update to 0.3.3