Modernize and cleanup the .spec a bit.

rubygem-aruba.spec

@@ -28,7 +28,6 @@ BuildRequires: /usr/bin/zsh
 # features/steps/command/shell.feature:97 # Scenario: Running python commands
 BuildRequires: /usr/bin/python3
 BuildArch: noarch
-Provides: rubygem(%{gem_name}) = %{version}
 
 %description
 Aruba is Cucumber extension for Command line applications written
@@ -44,30 +43,12 @@ BuildArch: noarch
 Documentation for %{name}
 
 %prep
-%setup -q -c -T
+%setup -q -n %{gem_name}-%{version}
 
-# Gem repack
-TOPDIR=$(pwd)
-mkdir tmpunpackdir
-pushd tmpunpackdir
-
-gem unpack %{SOURCE0}
-cd %{gem_name}-%{version}
-
-gem specification -l --ruby %{SOURCE0} > %{gem_name}.gemspec
-
-# Allow childprocess 0.5.6
-sed -i \
-	-e '/add_runtime_dependency.*childprocess/s|>= 0.6.3|>= 0.5.6|' \
-	%{gem_name}.gemspec
-
-gem build %{gem_name}.gemspec
-mv %{gem_name}-%{version}.gem $TOPDIR
-
-popd
-rm -rf tmpunpackdir
+%gemspec_remove_dep -g childprocess '>= 0.6.3'
 
 %build
+gem build ../%{gem_name}-%{version}.gemspec
 %gem_install
 
 
@@ -133,7 +114,7 @@ popd
 
 %files
 %dir %{gem_instdir}
-%doc %{gem_instdir}/LICENSE
+%license %{gem_instdir}/LICENSE
 %doc %{gem_instdir}/README.md
 %{gem_libdir}
 %{gem_instdir}/bin/