try fix build issues

rubygem-cfa.spec

@@ -1,19 +1,3 @@
-#
-# spec file for package rubygem-cfa
-#
-# Copyright (c) 2019 SUSE LINUX GmbH, Nuernberg, Germany.
-#
-# All modifications and additions to the file contributed by third parties
-# remain the property of their copyright owners, unless otherwise agreed
-# upon. The license for this file, and modifications and additions to the
-# file, is the same license as for the pristine package itself (unless the
-# license for the pristine package is not an Open Source License, in which
-# case the license is the MIT License). An "Open Source License" is a
-# license that conforms to the Open Source Definition (Version 1.9)
-# published by the Open Source Initiative.
-
-# Please submit bugfixes or comments via https://bugs.opensuse.org/
-#
 
 
 Name:           rubygem-cfa
@@ -21,12 +5,9 @@ Version:        1.0.2
 Release:        0
 %define mod_name cfa
 %define mod_full_name %{mod_name}-%{version}
-BuildRoot:      %{_tmppath}/%{name}-%{version}-build
-BuildRequires:  rubygem-gem2rpm
-BuildRequires:  ruby
-BuildRequires:  ruby-macros >= 5
+BuildRequires:  ruby(release) rubygems-devel rubygem(rspec)>=3
 Url:            https://github.com/config-files-api/config_files_api
-Source:         https://rubygems.org/gems/%{mod_full_name}.gem
+Source0:         https://rubygems.org/gems/%{mod_full_name}.gem
 Summary:        CFA (Config Files API) provides an easy way to create models on top
 License:        LGPL-3.0-only
 Group:          Development/Languages/Ruby
@@ -37,13 +18,21 @@ logic for managing configuraton files. It has built-in support for parsing
 using augeas lenses and also for working with files directly in memory.
 
 %prep
-
+%autosetup -n %{mod_full_name} -p1
+gem unpack %{SOURCE0}
 %build
-
+gem build ../%{mod_full_name}.gemspec
 %install
-%gem_install \
-  -f
-
-%gem_packages
+%gem_install 
+mkdir -p %{buildroot}%{gem_dir}
+cp -a .%{gem_dir}/* \
+        %{buildroot}%{gem_dir}/
 
+%files
+%dir %{gem_instdir}
+%{gem_libdir}
+%{_datadir}/gems/doc/%{mod_full_name}/
+%{_datadir}/gems/gems/%{mod_full_name}/
+%exclude %{gem_cache}
+%{gem_spec}
 %changelog