diff --git a/rust-mime.spec b/rust-mime.spec
index 26d7fa7..003a517 100644
--- a/rust-mime.spec
+++ b/rust-mime.spec
@@ -6,7 +6,7 @@
 
 Name:           rust-%{crate}
 Version:        0.3.12
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Strongly Typed Mimes
 
 # Upstream license specification: MIT/Apache-2.0
@@ -17,21 +17,38 @@ Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{
 ExclusiveArch:  %{rust_arches}
 
 BuildRequires:  rust-packaging
-# [dependencies]
-BuildRequires:  (crate(unicase) >= 2.0.0 with crate(unicase) < 3.0.0)
+BuildRequires:  (crate(unicase/default) >= 2.0.0 with crate(unicase/default) < 3.0.0)
 
-%description
-%{summary}.
+%global _description \
+Strongly Typed Mimes.
+
+%description %{_description}
 
 %package        devel
 Summary:        %{summary}
 BuildArch:      noarch
 
-%description    devel
-Strongly Typed Mimes.
+%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-MIT LICENSE-APACHE
+%doc README.md CONTRIBUTING.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
@@ -48,12 +65,10 @@ which use %{crate} from crates.io.
 %cargo_test
 %endif
 
-%files          devel
-%license LICENSE-MIT LICENSE-APACHE
-%doc README.md CONTRIBUTING.md
-%{cargo_registry}/%{crate}-%{version}/
-
 %changelog
+* Tue Nov 27 2018 Josh Stone <jistone@redhat.com> - 0.3.12-2
+- Adapt to new packaging
+
 * Mon Oct 22 2018 Josh Stone <jistone@redhat.com> - 0.3.12-1
 - Update to 0.3.12