89 lines
2.4 KiB
Haskell
89 lines
2.4 KiB
Haskell
module Property.Apt where
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import Data.Maybe
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import Control.Applicative
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import Data.List
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import Property
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import Utility.SafeCommand
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import Utility.Process
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sourcesList :: FilePath
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sourcesList = "/etc/apt/sources.list"
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type Url = String
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type Section = String
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data Suite = Stable | Testing | Unstable | Experimental
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showSuite :: Suite -> String
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showSuite Stable = "stable"
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showSuite Testing = "testing"
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showSuite Unstable = "unstable"
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showSuite Experimental = "experimental"
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debLine :: Suite -> Url -> [Section] -> Line
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debLine suite mirror sections = unwords $
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["deb", mirror, showSuite suite] ++ sections
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srcLine :: Line -> Line
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srcLine l = case words l of
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("deb":rest) -> unwords $ "deb-src" : rest
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_ -> ""
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stdSections :: [Section]
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stdSections = ["main", "contrib", "non-free"]
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debCdn :: Suite -> [Line]
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debCdn suite = [l, srcLine l]
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where
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l = debLine suite "http://cdn.debian.net/debian" stdSections
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{- Makes sources.list have a standard content using the mirror CDN,
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- with a particular Suite. -}
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stdSourcesList :: Suite -> Property
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stdSourcesList = setSourcesList . debCdn
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setSourcesList :: [Line] -> Property
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setSourcesList ls = fileHasContent sourcesList ls `onChange` update
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update :: Property
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update = cmdProperty "apt-get" [Param "update"]
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upgrade :: Property
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upgrade = cmdProperty "apt-get" [Params "-y safe-update"]
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type Package = String
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installed :: [Package] -> Property
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installed ps = check (isInstallable ps) go
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where
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go = cmdProperty "apt-get" $
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[Param "-y", Param "install"] ++ map Param ps
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removed :: [Package] -> Property
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removed ps = check (or <$> isInstalled ps) go
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where
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go = cmdProperty "apt-get" $ [Param "-y", Param "remove"] ++ map Param ps
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isInstallable :: [Package] -> IO Bool
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isInstallable ps = do
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l <- isInstalled ps
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return $ any (== False) l && not (null l)
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{- Note that the order of the returned list will not always
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- correspond to the order of the input list. The number of items may
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- even vary. If apt does not know about a package at all, it will not
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- be included in the result list. -}
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isInstalled :: [Package] -> IO [Bool]
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isInstalled ps = catMaybes . map parse . lines
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<$> readProcess "apt-cache" ("policy":ps)
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where
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parse l
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| "Installed: (none)" `isInfixOf` l = Just False
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| "Installed: " `isInfixOf` l = Just True
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| otherwise = Nothing
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autoRemove :: Property
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autoRemove = cmdProperty "apt-get" [Param "-y", Param "autoremove"]
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