diff --git a/rust-either.spec b/rust-either.spec
index a2d9567..9959244 100644
--- a/rust-either.spec
+++ b/rust-either.spec
@@ -7,9 +7,10 @@
 
 Name:           rust-%{crate}
 Version:        1.5.0
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Enum `Either` is a general purpose sum type with two cases
 
+# Upstream license specification: MIT/Apache-2.0
 License:        MIT or ASL 2.0
 URL:            https://crates.io/crates/either
 Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{crate}-%{version}.crate
@@ -17,30 +18,64 @@ Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{
 ExclusiveArch:  %{rust_arches}
 
 BuildRequires:  rust-packaging
-# [dependencies]
-BuildRequires:  ((crate(serde) >= 1.0.0 with crate(serde) < 2.0.0) with crate(serde/derive))
+BuildRequires:  (crate(serde/default) >= 1.0.0 with crate(serde/default) < 2.0.0)
+BuildRequires:  (crate(serde/derive) >= 1.0.0 with crate(serde/derive) < 2.0.0)
 
-%description
-%{summary}.
+%global _description \
+The enum `Either` with variants `Left` and `Right` is a general purpose sum\
+type with two cases.
+
+%description %{_description}
 
 %package        devel
 Summary:        %{summary}
 BuildArch:      noarch
 
-%description    devel
-The enum `Either` with variants `Left` and `Right` is a general purpose
-sum type with two cases.
+%description    devel %{_description}
+
+This package contains library source intended for building other packages
+which use "%{crate}" crate.
+
+%files          devel
+%license LICENSE-MIT LICENSE-APACHE
+%doc README.rst README-crates.io.md
+%{cargo_registry}/%{crate}-%{version}/
 
-Either has methods that are similar to Option and Result, and it also implements
-traits like `Iterator`.
+%package     -n %{name}+default-devel
+Summary:        %{summary}
+BuildArch:      noarch
 
-Includes macros `try_left!()` and `try_right!()` to use for
-short-circuiting logic, similar to how the `?` operator is used with `Result`.
-Note that `Either` is general purpose. For describing success or error, use the
-regular `Result`.
+%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
+
+%package     -n %{name}+serde-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+serde-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "serde" feature of "%{crate}" crate.
+
+%files       -n %{name}+serde-devel
+%ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
+
+%package     -n %{name}+use_std-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+use_std-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "use_std" feature of "%{crate}" crate.
+
+%files       -n %{name}+use_std-devel
+%ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
 
 %prep
 %autosetup -n %{crate}-%{version} -p1
@@ -57,12 +92,10 @@ which use %{crate} from crates.io.
 %cargo_test
 %endif
 
-%files          devel
-%license LICENSE-MIT LICENSE-APACHE
-%doc README.rst README-crates.io.md
-%{cargo_registry}/%{crate}-%{version}/
-
 %changelog
+* Sun Oct 28 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 1.5.0-4
+- Adapt to new packaging
+
 * Sun Oct 07 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 1.5.0-3
 - Run tests in infrastructure