cabal-plan (empty) → 0.1.0.0
raw patch · 6 files changed
+1319/−0 lines, 6 filesdep +aesondep +ansi-terminaldep +basesetup-changed
Dependencies added: aeson, ansi-terminal, base, base16-bytestring, bytestring, cabal-plan, containers, directory, filepath, mtl, text
Files
- ChangeLog.md +5/−0
- LICENSE +674/−0
- Setup.hs +2/−0
- cabal-plan.cabal +64/−0
- src-exe/cabal-plan.hs +190/−0
- src/Cabal/Plan.hs +384/−0
+ ChangeLog.md view
@@ -0,0 +1,5 @@+# Revision history for `cabal-plan`++## 0.1.0.0++* First version. Released on an unsuspecting world.
+ LICENSE view
@@ -0,0 +1,674 @@+ GNU GENERAL PUBLIC LICENSE+ Version 3, 29 June 2007++ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>+ Everyone is permitted to copy and distribute verbatim copies+ of this license document, but changing it is not allowed.++ Preamble++ The GNU General Public License is a free, copyleft license for+software and other kinds of works.++ The licenses for most software and other practical works are designed+to take away your freedom to share and change the works. By contrast,+the GNU General Public License is intended to guarantee your freedom to+share and change all versions of a program--to make sure it remains free+software for all its users. We, the Free Software Foundation, use the+GNU General Public License for most of our software; it applies also to+any other work released this way by its authors. You can apply it to+your programs, too.++ When we speak of free software, we are referring to freedom, not+price. 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+ Setup.hs view
@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain
+ cabal-plan.cabal view
@@ -0,0 +1,64 @@+name: cabal-plan+version: 0.1.0.0+synopsis: Library and utiltity for processing cabal's plan.json file+homepage: https://github.com/hvr/cabal-plan+license: GPL-3+license-file: LICENSE+author: Herbert Valerio Riedel+maintainer: hvr@gnu.org+copyright: 2016 Herbert Valerio Riedel+category: Development+build-type: Simple+cabal-version: >=1.10+description:+ This package provides a library for decoding @plan.json@ files as+ well as simple tool @cabal-plan@ for extracting and pretty printing+ the information contained in the @plan.json@ file.++extra-source-files:+ ChangeLog.md++library+ default-language: Haskell2010+ other-extensions: OverloadedStrings+ GeneralizedNewtypeDeriving+ RecordWildCards+ exposed-modules: Cabal.Plan++ build-depends: base >= 4.6 && <4.10+ , aeson >= 1 && <1.2+ , bytestring == 0.10.*+ , containers == 0.5.*+ , text == 1.2.*+ , directory >= 1.2 && < 1.4+ , filepath >= 1.3 && < 1.5+ , base16-bytestring >= 0.1.1 && < 0.2++ hs-source-dirs: src++ ghc-options: -Wall+++executable cabal-plan+ default-language: Haskell2010+ other-extensions: RecordWildCards++ main-is: src-exe/cabal-plan.hs++ -- dependencies w/ inherited version ranges via 'cabal-plan' library+ build-depends: cabal-plan+ , base+ , text+ , containers+ , bytestring++ -- dependencies which require version bounds+ build-depends: mtl >= 2.2.1 && < 2.3+ , ansi-terminal >= 0.6.2 && < 0.7++ ghc-options: -Wall+++source-repository head+ type: git+ location: https://github.com/hvr/cabal-plan
+ src-exe/cabal-plan.hs view
@@ -0,0 +1,190 @@+{-# LANGUAGE RecordWildCards #-}++module Main where++import Control.Monad+import Control.Monad.RWS.Strict+import qualified Data.Graph as G+import Data.Map (Map)+import qualified Data.Map as M+import Data.Set (Set)+import qualified Data.Set as S+import qualified Data.Text as T+import qualified Data.Text.Lazy as LT+import qualified Data.Text.Lazy.Builder as LT+import qualified Data.Text.Lazy.IO as LT+import System.Console.ANSI+import System.Environment++import Cabal.Plan++main :: IO ()+main = do+ -- TODO: optparse-applicative+ args <- getArgs+ case args of+ [] -> doInfo+ ("info":_) -> doInfo+ ("show":_) -> print =<< findAndDecodePlanJson+ ("list-bin":_) -> doListBin+ _ -> fail "unknown command (known commands: info show list-bin)"++doListBin :: IO ()+doListBin = do+ (v,_projbase) <- findAndDecodePlanJson++ forM_ (M.toList (pjUnits v)) $ \(_,Unit{..}) -> do+ forM_ (M.toList uComps) $ \(cn,ci) -> do+ case ciBinFile ci of+ Nothing -> return ()+ Just fn -> do+ let PkgId (PkgName pn) _ = uPId+ g = case cn of+ CompNameLib -> T.unpack (pn <> T.pack":lib:" <> pn)+ _ -> T.unpack (pn <> T.pack":" <> dispCompName cn)+ putStrLn (g ++ " " ++ fn)++doInfo :: IO ()+doInfo = do+ (v,projbase) <- findAndDecodePlanJson++ putStrLn ("using '" ++ projbase ++ "' as project root")+ putStrLn ""+ putStrLn "Tree"+ putStrLn "~~~~"+ putStrLn ""+ LT.putStrLn (dumpPlanJson v)++ -- print (findCycles (planJsonIdGrap v))++ putStrLn ""+ putStrLn "Top-sorted"+ putStrLn "~~~~~~~~~~"+ putStrLn ""++ let xs = toposort (planJsonIdGraph v)+ forM_ xs print++ putStrLn ""+ putStrLn "Direct deps"+ putStrLn "~~~~~~~~~~~"+ putStrLn ""++ let locals = [ Unit{..} | Unit{..} <- M.elems pm, uType == UnitTypeLocal ]+ pm = pjUnits v++ forM_ locals $ \pitem -> do+ print (uPId pitem)+ forM_ (M.toList $ uComps pitem) $ \(ct,ci) -> do+ print ct+ forM_ (S.toList $ ciLibDeps ci) $ \dep -> do+ let Just dep' = M.lookup dep pm+ pid = uPId dep'+ putStrLn (" " ++ T.unpack (dispPkgId pid))+ putStrLn ""++ return ()+++----------------------------------------------------------------------------++dumpPlanJson :: PlanJson -> LT.Text+dumpPlanJson (PlanJson { pjUnits = pm }) = LT.toLazyText out+ where+ ((),out) = evalRWS (mapM_ (go2 []) (S.toList roots)) () mempty++ id2pid :: Map UnitId PkgId+ id2pid = M.fromList [ (uId, uPId) | Unit{..} <- M.elems pm ]++ lupPid uid = M.findWithDefault undefined uid id2pid++ go2 :: [(CompName,Bool)] -> UnitId -> (RWS () LT.Builder (Set UnitId)) ()+ go2 lvl pid = do+ pidSeen <- gets (S.member pid)++ let pid_label = if preExists then (prettyId pid) else colorify White (prettyId pid)++ if not pidSeen+ then do+ tell $ LT.fromString (linepfx ++ pid_label ++ "\n")+ showDeps+ else do+ tell $ LT.fromString (linepfx ++ pid_label ++ ccol CompNameLib " ┄┄\n")+ -- tell $ LT.fromString (linepfx' ++ " └┄\n")++ modify' (S.insert pid)++ return ()+ where+ Just x' = M.lookup pid pm++ preExists = uType x' == UnitTypeBuiltin++ showDeps = forM_ (M.toList $ uComps x') $ \(ct,deps) -> do+ unless (ct == CompNameLib) $+ tell (LT.fromString $ linepfx' ++ " " ++ prettyCompTy (lupPid pid) ct ++ "\n")+ forM_ (lastAnn $ S.toList (ciLibDeps deps)) $ \(l,y) -> do+ go2 (lvl ++ [(ct, not l)]) y+++ linepfx = case unsnoc lvl of+ Nothing -> ""+ Just (xs,(zt,z)) -> concat [ if x then ccol xt " │ " else " " | (xt,x) <- xs ]+ ++ (ccol zt $ if z then " ├─ " else " └─ ")++ linepfx' = concat [ if x then " │ " else " " | (_,x) <- lvl ]++ roots :: Set UnitId+ roots = M.keysSet pm `S.difference` leafs+ where+ leafs = mconcat $ concatMap (map (ciLibDeps . snd) . M.toList . uComps) (M.elems pm)++ prettyId :: UnitId -> String+ prettyId = prettyPid . lupPid+ prettyPid = T.unpack . dispPkgId++ prettyCompTy :: PkgId -> CompName -> String+ prettyCompTy _pid c@CompNameLib = ccol c "[lib]"+ prettyCompTy _pid c@CompNameSetup = ccol c "[setup]"+ prettyCompTy pid c@(CompNameExe n) = ccol c $ "[" ++ prettyPid pid ++ ":exe:" ++ show n ++ "]"+ prettyCompTy pid c@(CompNameTest n) = ccol c $ "[" ++ prettyPid pid ++ ":test:" ++ show n ++ "]"+ prettyCompTy pid c@(CompNameBench n) = ccol c $ "[" ++ prettyPid pid ++ ":bench:" ++ show n ++ "]"+ prettyCompTy pid c@(CompNameSubLib n) = ccol c $ "[" ++ prettyPid pid ++ ":lib:" ++ show n ++ "]"++ ccol CompNameLib = colorify White+ ccol (CompNameExe _) = colorify Green+ ccol CompNameSetup = colorify Red+ ccol (CompNameTest _) = colorify Yellow+ ccol (CompNameBench _) = colorify Cyan+ ccol (CompNameSubLib _) = colorify Blue+++colorify :: Color -> String -> String+colorify col s = setSGRCode [SetColor Foreground Vivid col] ++ s ++ setSGRCode [Reset]+++lastAnn :: [x] -> [(Bool,x)]+lastAnn = reverse . firstAnn . reverse++firstAnn :: [x] -> [(Bool,x)]+firstAnn [] = []+firstAnn (x:xs) = (True,x) : map ((,) False) xs++unsnoc :: [x] -> Maybe ([x],x)+unsnoc [] = Nothing+unsnoc xs = Just (init xs, last xs)+++toposort :: Ord a => Map a (Set a) -> [a]+toposort m = reverse . map f . G.topSort $ g+ where+ (g, f) = graphFromMap m+++graphFromMap :: Ord a => Map a (Set a) -> (G.Graph, G.Vertex -> a)+graphFromMap m = (g, v2k')+ where+ v2k' v = case v2k v of ((), k, _) -> k++ (g, v2k, _) = G.graphFromEdges [ ((), k, S.toList v)+ | (k,v) <- M.toList m ]
+ src/Cabal/Plan.hs view
@@ -0,0 +1,384 @@+{-# LANGUAGE GeneralizedNewtypeDeriving #-}+{-# LANGUAGE OverloadedStrings #-}+{-# LANGUAGE RecordWildCards #-}++-- | Utilities for reading @cabal@'s @plan.json@ file+--+-- @plan.json@ are generated when using @cabal@+-- <http://cabal.readthedocs.io/en/latest/nix-local-build-overview.html Nix-style Local Builds>.+module Cabal.Plan+ (+ PlanJson(..)+ , Unit(..)+ , CompName(..)+ , dispCompName+ , CompInfo(..)+ , UnitType(..)++ -- * Basic types+ , Ver(..)+ , dispVer+ , PkgName(..)+ , PkgId(..)+ , dispPkgId+ , UnitId(..)+ , Sha256(..)+ , dispSha256++ -- * Utilities+ , planJsonIdGraph+ , planJsonIdRoots++ -- * Convenience functions+ , findAndDecodePlanJson+ , decodePlanJson+ ) where++import Control.Applicative as App+import Control.Monad+import Data.Aeson+import Data.Aeson.Types+import qualified Data.ByteString as B+import qualified Data.ByteString.Base16 as B16+import Data.List+import Data.Map (Map)+import qualified Data.Map as M+import Data.Monoid+import Data.Set (Set)+import qualified Data.Set as S+import Data.Text (Text)+import qualified Data.Text as T+import qualified Data.Text.Encoding as T+import qualified Data.Version as DV+import System.Directory+import System.FilePath+import Text.ParserCombinators.ReadP++----------------------------------------------------------------------------++-- | Equivalent to @Cabal@'s "Distribution.Package.Version"+newtype Ver = Ver [Int]+ deriving (Show,Eq,Ord)++-- | Equivalent to @Cabal@'s "Distribution.Package.UnitId"+newtype UnitId = UnitId Text+ deriving (Show,Eq,Ord,FromJSON,ToJSON)++-- | Equivalent to @Cabal@'s "Distribution.Package.PackageName"+newtype PkgName = PkgName Text+ deriving (Show,Eq,Ord,FromJSON,ToJSON)++-- | Equivalent to @Cabal@'s "Distribution.Package.PackageIdentifier"+data PkgId = PkgId !PkgName !Ver+ deriving (Show,Eq,Ord)++-- | SHA-256 hash+--+-- As an invariant, the wrapped 'B.ByteString' is exactly 32 bytes long.+newtype Sha256 = Sha256 B.ByteString+ deriving (Eq,Ord)++-- | Represents the information contained in cabal's @plan.json@ file.+--+-- This comprises basic information describing the environment as well+-- as the install/build plan computed by @cabal@.+data PlanJson = PlanJson+ { pjCabalVersion :: !Ver -- ^ Version of @cabal@ frontend+ , pjCabalLibVersion :: !Ver -- ^ Version of Cabal library+ , pjCompilerId :: !PkgId -- ^ Name and version of Haskell compiler+ , pjArch :: !Text -- ^ Architecture name+ , pjOs :: !Text -- ^ Operating system name+ , pjUnits :: !(M.Map UnitId Unit) -- ^ install/build plan+ } deriving Show++-- | Describes kind of build unit and its provenance+data UnitType = UnitTypeBuiltin -- ^ Lives in global (non-nix-style) package db+ | UnitTypeGlobal -- ^ Lives in Nix-store cache+ | UnitTypeLocal -- ^ Local package+ | UnitTypeInplace -- ^ Local in-place package+ deriving (Show,Eq)++-- | Represents a build-plan unit uniquely identified by its 'UnitId'+data Unit = Unit+ { uId :: !UnitId -- ^ Unit ID uniquely identifying a 'Unit' in install plan+ , uPId :: !PkgId -- ^ Package name and version (not necessarily unique within plan)+ , uType :: !UnitType -- ^ Describes type of build item, see 'UnitType'+ , uSha256 :: !(Maybe Sha256) -- ^ SHA256 source tarball checksum (as used by e.g. @hackage-security@)+ , uComps :: !(Map CompName CompInfo) -- ^ Components identified by 'UnitId'+ --+ -- When @cabal@ needs to fall back to legacy-mode (currently for+ -- @custom@ build-types or obsolete @cabal-version@ values), 'uComps'+ -- may contain more than one element.+ , uFlags :: !(Map Text Bool) -- ^ cabal flag settings (not available for 'UnitTypeBuiltin')+ } deriving Show++-- | Component name inside a build-plan unit+--+-- A similiar type exists in @Cabal@ codebase, see+-- "Distribution.Simple.LocalBuildInfo.ComponentName"+data CompName =+ CompNameLib+ | CompNameSubLib !Text+ | CompNameExe !Text+ | CompNameTest !Text+ | CompNameBench !Text+ | CompNameSetup+ deriving (Show, Eq, Ord)++-- | Describes component-specific information inside a 'Unit'+data CompInfo = CompInfo+ { ciLibDeps :: Set UnitId -- ^ library dependencies+ , ciExeDeps :: Set UnitId -- ^ executable dependencies+ , ciBinFile :: Maybe FilePath -- ^ path-name of artifact if available+ } deriving Show++----------------------------------------------------------------------------+----------------------------------------------------------------------------+----------------------------------------------------------------------------++-- JSON instances++instance FromJSON CompName where+ parseJSON = withText "CompName" (maybe (fail "invalid CompName") pure . parseCompName)++instance ToJSON CompName where+ toJSON = toJSON . dispCompName++instance FromJSONKey CompName where+ fromJSONKey = FromJSONKeyTextParser (maybe (fail "CompName") pure . parseCompName)++instance ToJSONKey CompName where+ toJSONKey = toJSONKeyText dispCompName++instance FromJSON CompInfo where+ parseJSON = withObject "CompInfo" $ \o ->+ CompInfo <$> o .:?! "depends"+ <*> o .:?! "exe-depends"+ <*> o .:? "bin-file"++instance FromJSON PkgId where+ parseJSON = withText "PkgId" (maybe (fail "PkgId") pure . parsePkgId)++instance ToJSON PkgId where+ toJSON = toJSON . dispPkgId++----------------------------------------------------------------------------+-- parser helpers++parseCompName :: Text -> Maybe CompName+parseCompName t0 = case T.splitOn ":" t0 of+ ["lib"] -> Just CompNameLib+ ["lib",n] -> Just $ CompNameSubLib n+ ["exe",n] -> Just $ CompNameExe n+ ["bench",n] -> Just $ CompNameBench n+ ["test",n] -> Just $ CompNameTest n+ ["setup"] -> Just CompNameSetup+ _ -> Nothing++-- | Pretty print 'CompName'+dispCompName :: CompName -> Text+dispCompName cn = case cn of+ CompNameLib -> "lib"+ CompNameSubLib n -> "lib:" <> n+ CompNameExe n -> "exe:" <> n+ CompNameBench n -> "bench:" <> n+ CompNameTest n -> "test:" <> n+ CompNameSetup -> "setup"++instance FromJSON PlanJson where+ parseJSON = withObject "PlanJson" $ \o -> do+ pjCabalVersion <- o .: "cabal-version"++ unless (pjCabalVersion >= Ver [2]) $+ fail ("plan.json version " ++ T.unpack (dispVer pjCabalVersion) ++ " not supported")++ pjCabalLibVersion <- o .: "cabal-lib-version"+ pjCompilerId <- o .: "compiler-id"+ pjArch <- o .: "arch"+ pjOs <- o .: "os"+ pjUnits <- toMap =<< o .: "install-plan"++ App.pure PlanJson{..}+ where+ toMap pil = do+ let pim = M.fromList [ (uId pi',pi') | pi' <- pil ]+ unless (M.size pim == length pil) $+ fail "install-plan[] has duplicate ids"+ pure pim++(.:?!) :: (FromJSON a, Monoid a) => Object -> Text -> Parser a+o .:?! fld = o .:? fld .!= mempty++planItemAllDeps :: Unit -> Set UnitId+planItemAllDeps Unit{..} = mconcat [ ciLibDeps <> ciExeDeps | CompInfo{..} <- M.elems uComps ]++instance FromJSON Unit where+ parseJSON = withObject "Unit" $ \o -> do+ mcomponents <- o .:? "components"+ mcomponentname <- o .:? "component-name"+ ty <- o .: "type"+ mstyle <- o .:? "style"++ uId <- o .: "id"+ uPId <- PkgId <$> o .: "pkg-name" <*> o .: "pkg-version"+ uType <- case (ty :: Text, mstyle :: Maybe Text) of+ ("pre-existing",Nothing) -> pure UnitTypeBuiltin+ ("configured",Just "global") -> pure UnitTypeGlobal+ ("configured",Just "local") -> pure UnitTypeLocal+ ("configured",Just "inplace") -> pure UnitTypeInplace+ _ -> fail (show (ty,mstyle))+ uFlags <- o .:?! "flags"+ uSha256 <- o .:? "pkg-src-sha256"+ uComps <- case (mcomponents, mcomponentname) of+ (Just comps0, Nothing) ->+ pure comps0+ (Nothing, Just cname) ->+ M.singleton cname <$> parseJSON (Object o)+ (Nothing, Nothing) | uType == UnitTypeBuiltin ->+ M.singleton CompNameLib <$> parseJSON (Object o)+ _ -> fail (show o)++ pure Unit{..}++----------------------------------------------------------------------------+-- Convenience helper++-- | Locates and decodes @plan.json@ for cabal project being in scope+-- for current working directory+--+-- The folder assumed to be the project-root is returned as well.+--+-- Throws 'IO' exceptions on errors.+--+findAndDecodePlanJson :: IO (PlanJson, FilePath)+findAndDecodePlanJson = do+ projbase <- findProjRoot++ let distFolder = projbase </> "dist-newstyle"+ haveDistFolder <- doesDirectoryExist distFolder++ unless haveDistFolder $+ fail ("missing " ++ show distFolder ++ " folder; do you need to run 'cabal new-build'?")++ let planJsonFn = distFolder </> "cache" </> "plan.json"++ havePlanJson <- doesFileExist planJsonFn++ unless havePlanJson $+ fail "missing 'plan.json' file; do you need to run 'cabal new-build'?"++ plan <- decodePlanJson planJsonFn++ pure (plan, projbase)++-- | Decodes @plan.json@ file location provided as 'FilePath'+--+-- This is a trivial convenience function so that the caller doesn't+-- have to depend on @aeson@ directly+--+-- Throws 'IO' exceptions on errors.+--+decodePlanJson :: FilePath -> IO PlanJson+decodePlanJson planJsonFn = do+ jsraw <- B.readFile planJsonFn+ either fail pure $ eitherDecodeStrict' jsraw++-- Find project root, this emulates cabal's current heuristic+--+-- TODO: currently fallsback to CWD if no cabal.project is found; fallback to locating $pkg.cabal files instead+findProjRoot :: IO FilePath+findProjRoot = do+ cwd <- getCurrentDirectory++ let tst d = do let fn = d </> "cabal.project"+ ex <- doesFileExist fn+ if ex then pure (Just fn) else pure Nothing++ md <- walkUpFolders tst cwd++ pure (maybe cwd fst md)+++walkUpFolders :: (FilePath -> IO (Maybe a)) -> FilePath -> IO (Maybe (FilePath,a))+walkUpFolders dtest d0 = do+ home <- getHomeDirectory++ let go d | d == home = pure Nothing+ | isDrive d = pure Nothing+ | otherwise = do+ t <- dtest d+ case t of+ Just a -> pure $ Just (d, a)+ Nothing -> go (takeDirectory d)++ go d0+++parseVer :: Text -> Maybe Ver+parseVer str = case reverse $ readP_to_S DV.parseVersion (T.unpack str) of+ (ver, "") : _ | not (null (DV.versionBranch ver)), all (>= 0) (DV.versionBranch ver)+ -> Just (Ver $ DV.versionBranch ver)+ _ -> Nothing++-- | Pretty print 'Ver'+dispVer :: Ver -> Text+dispVer (Ver ns) = T.pack $ intercalate "." (map show ns)++instance FromJSON Ver where+ parseJSON = withText "Ver" (maybe (fail "Ver") pure . parseVer)++instance ToJSON Ver where+ toJSON = toJSON . dispVer++parsePkgId :: Text -> Maybe PkgId+parsePkgId t = do+ let (pns_, pvs) = T.breakOnEnd "-" t+ pv <- parseVer pvs++ pn <- T.stripSuffix "-" pns_++ -- TODO: validate pn+ pure (PkgId (PkgName pn) pv)++-- | Pretty print 'PkgId'+dispPkgId :: PkgId -> Text+dispPkgId (PkgId (PkgName pn) pv) = pn <> "-" <> dispVer pv++parseSha256 :: Text -> Maybe Sha256+parseSha256 t+ | B.length s == 32, B.null rest = Just (Sha256 s)+ | otherwise = Nothing+ where+ (s, rest) = B16.decode $ T.encodeUtf8 t++-- | Pretty print 'Sha256' as base-16+dispSha256 :: Sha256 -> Text+dispSha256 (Sha256 s) = T.decodeLatin1 (B16.encode s)++instance FromJSON Sha256 where+ parseJSON = withText "Sha256" (maybe (fail "Sha256") pure . parseSha256)++instance ToJSON Sha256 where+ toJSON = toJSON . dispSha256++instance Show Sha256 where+ show = show . dispSha256++++----------------------------------------------------------------------------++-- | Extract directed 'UnitId' dependency graph edges from 'pjUnits'+--+-- This graph contains both, library and executable dependencies edges+planJsonIdGraph :: PlanJson -> Map UnitId (Set UnitId)+planJsonIdGraph PlanJson{..} = M.fromList [ (uId unit, planItemAllDeps unit)+ | unit <- M.elems pjUnits+ ]++-- | Extract 'UnitId' root nodes from dependency graph computed by 'planJsonIdGraph'+planJsonIdRoots :: PlanJson -> Set UnitId+planJsonIdRoots PlanJson{..} = M.keysSet pjUnits `S.difference` nonRoots+ where+ nonRoots :: Set UnitId+ nonRoots = mconcat $ M.elems $ planJsonIdGraph PlanJson{..}