error install sogoupinyin on elementary OS Freya

Question

IwanttoinstallsogoupinyinonelementaryOS
Ihavedonethesomeworkssoastobeprepared
sudoapt-getremoveibus
sudoadd-apt-repositoryppa:fcitx-team/nightly
sudoapt-getupdate
sudoapt-getinstallfcitx-sogoupinyin#failed,errorshows:unabletolocatefcitx-sogoupinyin
therefore,IdownloadthepackagefromthisURLhttp://pinyin.sogou.com/linux/
andusedpkgcommandtoinstallit.
hereisthelog.
honwhy@honwhy-elementary-freya:~/Downloads$sudodpkg-isogoupinyin_1.2.0.0048_amd64.deb
(Readingdatabase...127719filesanddirectoriescurrentlyinstalled.)
Preparingtounpacksogoupinyin_1.2.0.0048_amd64.deb...
Unpackingsogoupinyin(1.2.0.0048)over(1.2.0.0048)...
/var/lib/dpkg/info/sogoupinyin.postrm:7:local:OS":badvariablename
dpkg:warning:subprocessoldpost-removalscriptreturnederrorexitstatus2
dpkg:tryingscriptfromthenewpackageinstead...
/var/lib/dpkg/tmp.ci/postrm:7:local:OS":badvariablename
dpkg:errorprocessingarchivesogoupinyin_1.2.0.0048_amd64.deb(--install):
subprocessnewpost-removalscriptreturnederrorexitstatus2
/var/lib/dpkg/tmp.ci/postrm:7:local:OS":badvariablename
dpkg:errorwhilecleaningup:
subprocessnewpost-removalscriptreturnederrorexitstatus2
Processingtriggersforhicolor-icon-theme(0.13-1)...
Processingtriggersforshared-mime-info(1.2-0ubuntu3)...
Processingtriggersforlibglib2.0-0:amd64(2.42.2-0ubuntu1~14.04~ricotz0)...
Processingtriggersforbamfdaemon(0.5.1+14.04.20140409-0ubuntu1+elementary2~ubuntu14.04.1)...
Rebuilding/usr/share/applications/bamf-2.index...
Processingtriggersforgnome-menus(3.10.1-0ubuntu2)...
Processingtriggersfordesktop-file-utils(0.22-1ubuntu1)...
Processingtriggersformime-support(3.54ubuntu1.1)...
Errorswereencounteredwhileprocessing:
sogoupinyin_1.2.0.0048_amd64.deb