rpm: specfile cleanup

- more readable Summary and %description
- use '%foo' macros, not '%{foo}'
- use %license and %doc
- fix (Build)Requires

Author: praiskup

rpm/dnf-plugin-diff.spec

@@ -3,24 +3,28 @@
 Name:           dnf-plugin-diff
 Version:        1.1
 Release:        1%{?dist}
-Summary:        Diff changes in packages
-BuildArch: noarch
+Summary:        Display local changes in files from installed RPM packages
+BuildArch:      noarch
 
 License:        GPLv2+
-URL:            https://github.com/praiskup/%{name}
-Source0:        https://github.com/praiskup/%{name}/archive/v%{version}/%{name}-%{version}.tar.gz
+URL:            https://github.com/praiskup/%name
+Source0:        https://github.com/praiskup/%name/archive/v%version/%name-%version.tar.gz
 
 BuildRequires:  python3-devel
+BuildRequires:  make
 
 Requires:       cpio
 Requires:       python3-dnf
+Requires:       python3-dnf-plugins-core
 Requires:       file
 
 Provides:       dnf-command(diff) = %version
 
 
 %description
-Attempt to diff packages against local changes.
+DNF plugin to compare files from the original package contents with locally
+available files and display differences in text files, such as configuration
+changes or source code (for interpreted languages).
 
 
 %prep
@@ -37,7 +41,8 @@ Attempt to diff packages against local changes.
 
 
 %files
-%doc
+%license COPYING
+%doc README
 %_libexecdir/dnf-diff-*
 %python3_sitelib/dnf-plugins