diff options
Diffstat (limited to 'utils/ghc-pkg/Main.hs')
| -rw-r--r-- | utils/ghc-pkg/Main.hs | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/utils/ghc-pkg/Main.hs b/utils/ghc-pkg/Main.hs index e2f497f36c..41ed265f4b 100644 --- a/utils/ghc-pkg/Main.hs +++ b/utils/ghc-pkg/Main.hs @@ -33,6 +33,7 @@ import qualified Control.Exception as Exception import Data.Maybe import Data.Char ( isSpace, toLower ) +import Data.Ord (comparing) import Control.Monad import System.Directory ( doesDirectoryExist, getDirectoryContents, doesFileExist, renameFile, removeFile, @@ -1012,7 +1013,8 @@ listPackages verbosity my_flags mPackageName mModuleName = do then hPutStrLn stdout " (no packages)" else hPutStrLn stdout $ unlines (map (" " ++) pp_pkgs) where - pp_pkgs = map pp_pkg pkg_confs + -- Sort using instance Ord PackageId + pp_pkgs = map pp_pkg . sortBy (comparing installedPackageId) $ pkg_confs pp_pkg p | sourcePackageId p `elem` broken = printf "{%s}" doc | exposed p = doc @@ -1066,7 +1068,8 @@ simplePackageList :: [Flag] -> [InstalledPackageInfo] -> IO () simplePackageList my_flags pkgs = do let showPkg = if FlagNamesOnly `elem` my_flags then display . pkgName else display - strs = map showPkg $ sortBy compPkgIdVer $ map sourcePackageId pkgs + -- Sort using instance Ord PackageId + strs = map showPkg $ sort $ map sourcePackageId pkgs when (not (null pkgs)) $ hPutStrLn stdout $ concat $ intersperse " " strs @@ -1098,10 +1101,11 @@ latestPackage verbosity my_flags pkgid = do getPkgDatabases verbosity False True{-use cache-} False{-expand vars-} my_flags ps <- findPackages flag_db_stack (Id pkgid) - show_pkg (sortBy compPkgIdVer (map sourcePackageId ps)) + case ps of + [] -> die "no matches" + _ -> show_pkg . maximum . map sourcePackageId $ ps where - show_pkg [] = die "no matches" - show_pkg pids = hPutStrLn stdout (display (last pids)) + show_pkg pid = hPutStrLn stdout (display pid) -- ----------------------------------------------------------------------------- -- Describe @@ -1165,9 +1169,6 @@ matchesPkg :: PackageArg -> InstalledPackageInfo -> Bool (Id pid) `matchesPkg` pkg = pid `matches` sourcePackageId pkg (Substring _ m) `matchesPkg` pkg = m (display (sourcePackageId pkg)) -compPkgIdVer :: PackageIdentifier -> PackageIdentifier -> Ordering -compPkgIdVer p1 p2 = pkgVersion p1 `compare` pkgVersion p2 - -- ----------------------------------------------------------------------------- -- Field |