Do not pull optional dependencies

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

rust-digest.spec

@@ -7,7 +7,7 @@
 
 Name:           rust-%{crate}
 Version:        0.8.0
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Traits for cryptographic hash functions
 
 # Upstream license specification: MIT OR Apache-2.0
@@ -18,7 +18,6 @@ Source:         %{crates_source}
 ExclusiveArch:  %{rust_arches}
 
 BuildRequires:  rust-packaging
-BuildRequires:  (crate(blobby/default) >= 0.1.0 with crate(blobby/default) < 0.2.0)
 BuildRequires:  (crate(generic-array/default) >= 0.12.0 with crate(generic-array/default) < 0.13.0)
 
 %global _description \
@@ -51,6 +50,30 @@ which use "default" feature of "%{crate}" crate.
 %files       -n %{name}+default-devel
 %ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
 
+%package     -n %{name}+blobby-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+blobby-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "blobby" feature of "%{crate}" crate.
+
+%files       -n %{name}+blobby-devel
+%ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
+
+%package     -n %{name}+dev-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+dev-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "dev" feature of "%{crate}" crate.
+
+%files       -n %{name}+dev-devel
+%ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
+
 %package     -n %{name}+std-devel
 Summary:        %{summary}
 BuildArch:      noarch
@@ -79,6 +102,9 @@ which use "std" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Thu Mar 14 2019 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.8.0-3
+- Do not pull optional dependencies
+
 * Sat Feb 02 2019 Fedora Release Engineering <releng@fedoraproject.org> - 0.8.0-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild