過去バージョンのパッケージも列挙する

$ man yum
...
--showduplicates
    Doesn't limit packages to their latest versions in the info, list and search commands (will also affect plugins which use the doPackageLists() API).
...

$ yum --showduplicates list httpd
Loaded plugins: priorities, update-motd, upgrade-helper
Available Packages
httpd.x86_64                                        2.2.31-1.7.amzn1                                        amzn-main   
httpd.x86_64                                        2.2.31-1.8.amzn1                                        amzn-updates