else showPackageId
pkgs = map showPkg $ sortBy compPkgIdVer $
map package (concatMap snd db_stack)
- when (null pkgs) $ die "no matches"
- hPutStrLn stdout $ concat $ intersperse " " pkgs
+ when (not (null pkgs)) $
+ hPutStrLn stdout $ concat $ intersperse " " pkgs
-- -----------------------------------------------------------------------------
-- Prints the highest (hidden or exposed) version of a package