@@ -5,67 +5,48 @@
5{-# LANGUAGE MultiWayIf #-}
5{-# LANGUAGE MultiWayIf #-}
6{-# LANGUAGE OverloadedStrings #-}
6{-# LANGUAGE OverloadedStrings #-}
7{-# LANGUAGE PatternGuards #-}
7{-# LANGUAGE PatternGuards #-}
8+{-# LANGUAGE QuasiQuotes #-}
8{-# LANGUAGE ScopedTypeVariables #-}
9{-# LANGUAGE ScopedTypeVariables #-}
9{-# LANGUAGE TypeApplications #-}
10{-# LANGUAGE TypeApplications #-}
10−module Obelisk.Command.Thunk
11+module Obelisk.Command.Thunk where
13− , ReadThunkError (..)
16− , ThunkPackConfig (..)
20− , ThunkUpdateConfig (..)
23− , createThunkWithLatest
28− , nixBuildAttrWithCache
29− , nixBuildThunkAttrWithCache
35− , updateThunkToLatest
39import Control.Applicative
13import Control.Applicative
40import Control.Exception (displayException, try)
14import Control.Exception (displayException, try)
41−import qualified Control.Lens as Lens
15+import Control.Lens (ifor, ifor_, (.~))
42−import Control.Lens.Indexed hiding ((<.>))
43import Control.Monad
16import Control.Monad
44−import Control.Monad.Catch (handle)
17+import Control.Monad.Extra (findM)
18+import Control.Monad.Catch (MonadCatch, handle)
45import Control.Monad.Except
19import Control.Monad.Except
46import Data.Aeson ((.=))
20import Data.Aeson ((.=))
47import qualified Data.Aeson as Aeson
21import qualified Data.Aeson as Aeson
48import Data.Aeson.Encode.Pretty
22import Data.Aeson.Encode.Pretty
49import qualified Data.Aeson.Types as Aeson
23import qualified Data.Aeson.Types as Aeson
24+import Data.Bifunctor (first)
50import qualified Data.ByteString.Lazy as LBS
25import qualified Data.ByteString.Lazy as LBS
51import Data.Containers.ListUtils (nubOrd)
26import Data.Containers.ListUtils (nubOrd)
52import Data.Default
27import Data.Default
53import Data.Either.Combinators (fromRight', rightToMaybe)
28import Data.Either.Combinators (fromRight', rightToMaybe)
29+import Data.Foldable (toList)
30+import Data.Function ((&))
31+import Data.Functor ((<&>))
54import Data.Git.Ref (Ref)
32import Data.Git.Ref (Ref)
55import qualified Data.Git.Ref as Ref
33import qualified Data.Git.Ref as Ref
56import qualified Data.List as L
34import qualified Data.List as L
57−import Data.List.NonEmpty (NonEmpty (..))
35+import Data.List.NonEmpty (NonEmpty (..), nonEmpty)
58import qualified Data.List.NonEmpty as NonEmpty
36import qualified Data.List.NonEmpty as NonEmpty
59import Data.Map (Map)
37import Data.Map (Map)
60import qualified Data.Map as Map
38import qualified Data.Map as Map
61import Data.Maybe
39import Data.Maybe
62import Data.Set (Set)
40import Data.Set (Set)
63import qualified Data.Set as Set
41import qualified Data.Set as Set
42+import Data.String.Here.Interpolated (i)
43+import Data.String.Here.Uninterpolated (here)
64import Data.Text (Text)
44import Data.Text (Text)
65import qualified Data.Text as T
45import qualified Data.Text as T
66import Data.Text.Encoding
46import Data.Text.Encoding
67import qualified Data.Text.IO as T
47import qualified Data.Text.IO as T
68import Data.Time.Clock.POSIX (posixSecondsToUTCTime)
48import Data.Time.Clock.POSIX (posixSecondsToUTCTime)
49+import Data.Traversable (for)
69import Data.Yaml (parseMaybe)
50import Data.Yaml (parseMaybe)
70import GitHub
51import GitHub
71import GitHub.Data.Name
52import GitHub.Data.Name
@@ -75,7 +56,7 @@ import System.Exit
75import System.FilePath
56import System.FilePath
76import System.IO.Error
57import System.IO.Error
77import System.IO.Temp
58import System.IO.Temp
78−import System.Posix (getSymbolicLinkStatus, modificationTime)
59+import System.PosixCompat.Files (getSymbolicLinkStatus, modificationTime)
79import qualified Text.URI as URI
60import qualified Text.URI as URI
81import Obelisk.App (MonadObelisk)
62import Obelisk.App (MonadObelisk)
@@ -84,11 +65,10 @@ import Obelisk.Command.Utils
85--TODO: Support symlinked thunk data
66--TODO: Support symlinked thunk data
86data ThunkData
67data ThunkData
87− = ThunkData_Packed ThunkPtr
68+ = ThunkData_Packed ThunkSpec ThunkPtr
88 -- ^ Packed thunk
69 -- ^ Packed thunk
89− | ThunkData_Checkout (Maybe ThunkPtr)
70+ | ThunkData_Checkout
90 -- ^ Checked out thunk that was unpacked from this pointer
71 -- ^ Checked out thunk that was unpacked from this pointer
91− deriving (Show, Eq, Ord)
93-- | A reference to the exact data that a thunk should translate into
73-- | A reference to the exact data that a thunk should translate into
94data ThunkPtr = ThunkPtr
74data ThunkPtr = ThunkPtr
@@ -114,6 +94,11 @@ data ThunkSource
114 | ThunkSource_Git GitSource
94 | ThunkSource_Git GitSource
115 deriving (Show, Eq, Ord)
95 deriving (Show, Eq, Ord)
97+thunkSourceToGitSource :: ThunkSource -> GitSource
98+thunkSourceToGitSource = \case
99+ ThunkSource_GitHub s -> forgetGithub False s
100+ ThunkSource_Git s -> s
117data GitHubSource = GitHubSource
102data GitHubSource = GitHubSource
118 { _gitHubSource_owner :: Name Owner
103 { _gitHubSource_owner :: Name Owner
119 , _gitHubSource_repo :: Name Repo
104 , _gitHubSource_repo :: Name Repo
@@ -193,14 +178,14 @@ getNixSha256ForUriUnpacked
193getNixSha256ForUriUnpacked uri =
178getNixSha256ForUriUnpacked uri =
194 withExitFailMessage ("nix-prefetch-url: Failed to determine sha256 hash of URL " <> gitUriToText uri) $ do
179 withExitFailMessage ("nix-prefetch-url: Failed to determine sha256 hash of URL " <> gitUriToText uri) $ do
195 [hash] <- fmap T.lines $ readProcessAndLogOutput (Debug, Debug) $
180 [hash] <- fmap T.lines $ readProcessAndLogOutput (Debug, Debug) $
196− proc "nix-prefetch-url" ["--unpack", "--type", "sha256", T.unpack $ gitUriToText uri]
181+ proc nixPrefetchUrlPath ["--unpack", "--type", "sha256", T.unpack $ gitUriToText uri]
197 pure hash
182 pure hash
199nixPrefetchGit :: MonadObelisk m => GitUri -> Text -> Bool -> m NixSha256
184nixPrefetchGit :: MonadObelisk m => GitUri -> Text -> Bool -> m NixSha256
200nixPrefetchGit uri rev fetchSubmodules =
185nixPrefetchGit uri rev fetchSubmodules =
201 withExitFailMessage ("nix-prefetch-git: Failed to determine sha256 hash of Git repo " <> gitUriToText uri <> " at " <> rev) $ do
186 withExitFailMessage ("nix-prefetch-git: Failed to determine sha256 hash of Git repo " <> gitUriToText uri <> " at " <> rev) $ do
202 out <- readProcessAndLogStderr Debug $
187 out <- readProcessAndLogStderr Debug $
203− proc "nix-prefetch-git" $ filter (/="")
188+ proc nixPrefetchGitPath $ filter (/="")
204 [ "--url", T.unpack $ gitUriToText uri
189 [ "--url", T.unpack $ gitUriToText uri
205 , "--rev", T.unpack rev
190 , "--rev", T.unpack rev
206 , if fetchSubmodules then "--fetch-submodules" else ""
191 , if fetchSubmodules then "--fetch-submodules" else ""
@@ -213,96 +198,117 @@ nixPrefetchGit uri rev fetchSubmodules =
214--TODO: Pretty print these
199--TODO: Pretty print these
215data ReadThunkError
200data ReadThunkError
216− = ReadThunkError_UnrecognizedFiles
201+ = ReadThunkError_UnrecognizedThunk
217− | ReadThunkError_AmbiguousFiles
202+ | ReadThunkError_UnrecognizedPaths (NonEmpty FilePath)
218− | ReadThunkError_UnrecognizedLoader Text
203+ | ReadThunkError_MissingPaths (NonEmpty FilePath)
219− | ReadThunkError_UnparseablePtr LBS.ByteString
204+ | ReadThunkError_UnparseablePtr FilePath String
205+ | ReadThunkError_FileError IOError
206+ | ReadThunkError_FileDoesNotMatch FilePath Text
207+ | ReadThunkError_UnrecognizedState String
208+ | ReadThunkError_AmbiguousPackedState ThunkPtr ThunkPtr
220− deriving (Show)
209+ deriving (Show)
222−-- | Read a thunk and validate that it is only a thunk, either packed or unpacked.
211+unpackedDirName :: FilePath
223−-- If the thunk is packed and additional data is present, fail.
212+unpackedDirName = "."
224−readThunk :: MonadObelisk m => FilePath -> m (Either ReadThunkError ThunkData)
225−readThunk thunkDir = do
226− files <- liftIO $ listDirectory thunkDir
227− case ".git" `elem` files of
228− True -> fmap ThunkData_Checkout <$> do
229− let origThunkPath = thunkDir </> ".git" </> "obelisk" </> "orig-thunk"
230− liftIO $ doesDirectoryExist origThunkPath >>= \case
231− True -> fmap Just <$> readPackedThunk origThunkPath
232− False -> return $ return Nothing
233− False -> liftIO $ fmap ThunkData_Packed <$> readPackedThunk thunkDir
235attrCacheFileName :: FilePath
214attrCacheFileName :: FilePath
236attrCacheFileName = ".attr-cache"
215attrCacheFileName = ".attr-cache"
238−data ThunkType = ThunkType
217+-- | Specification for how a file in a thunk version works.
239− { _thunkType_loader :: FilePath
218+data ThunkFileSpec
240− , _thunkType_json :: FilePath
219+ = ThunkFileSpec_Ptr (LBS.ByteString -> Either String ThunkPtr) -- ^ This file specifies 'ThunkPtr' data
241− , _thunkType_optional :: Set FilePath
220+ | ThunkFileSpec_FileMatches Text -- ^ This file must match the given content exactly
242− , _thunkType_loaderVersions :: NonEmpty Text
221+ | ThunkFileSpec_CheckoutIndicator -- ^ Existence of this directory indicates that the thunk is unpacked
243− , _thunkType_parser :: Aeson.Object -> Aeson.Parser ThunkPtr
222+ | ThunkFileSpec_AttrCache -- ^ This directory is an attribute cache
245−
224+-- | Specification for how a set of files in a thunk version work.
246−gitHubThunkType :: ThunkType
225+data ThunkSpec = ThunkSpec
247−gitHubThunkType = ThunkType
226+ { _thunkSpec_name :: !Text
248− { _thunkType_loader = "default.nix"
227+ , _thunkSpec_files :: !(Map FilePath ThunkFileSpec)
249− , _thunkType_json = "github.json"
250− , _thunkType_optional = Set.fromList [attrCacheFileName]
251− , _thunkType_loaderVersions = gitHubStandaloneLoaders
252− , _thunkType_parser = parseThunkPtr $ \v ->
253− ThunkSource_GitHub <$> parseGitHubSource v <|> ThunkSource_Git <$> parseGitSource v
256−gitThunkType :: ThunkType
230+thunkSpecTypes :: NonEmpty (NonEmpty ThunkSpec)
257−gitThunkType = ThunkType
231+thunkSpecTypes = gitThunkSpecs :| [gitHubThunkSpecs]
258− { _thunkType_loader = "default.nix"
232+
259− , _thunkType_json = "git.json"
233+-- | Attempts to match a 'ThunkSpec' to a given directory.
260− , _thunkType_optional = Set.fromList [attrCacheFileName]
234+matchThunkSpecToDir
261− , _thunkType_loaderVersions = plainGitStandaloneLoaders
235+ :: (MonadError ReadThunkError m, MonadIO m, MonadCatch m)
262− , _thunkType_parser = parseThunkPtr $ fmap ThunkSource_Git . parseGitSource
236+ => ThunkSpec -- ^ 'ThunkSpec' to match against the given files/directory
263− }
237+ -> FilePath -- ^ Path to directory
264−
238+ -> Set FilePath -- ^ Set of file paths relative to the given directory
265−thunkTypes :: [ThunkType]
239+ -> m ThunkData
266−thunkTypes = [gitThunkType, gitHubThunkType]
240+matchThunkSpecToDir thunkSpec dir dirFiles = do
267−
241+ case nonEmpty (toList $ dirFiles `Set.difference` expectedPaths) of
268−findThunkType :: [ThunkType] -> FilePath -> IO (Either ReadThunkError ThunkType)
242+ Just fs -> throwError $ ReadThunkError_UnrecognizedPaths $ (dir </>) <$> fs
269−findThunkType types thunkDir = do
243+ Nothing -> pure ()
270− matches <- fmap catMaybes $ forM types $ \thunkType -> do
244+ case nonEmpty (toList $ requiredPaths `Set.difference` dirFiles) of
271− let
245+ Just fs -> throwError $ ReadThunkError_MissingPaths $ (dir </>) <$> fs
272− expectedContents = Set.fromList $ (thunkDir </>) <$>
246+ Nothing -> pure ()
273− [ _thunkType_loader thunkType
247+ datas <- fmap toList $ flip Map.traverseMaybeWithKey (_thunkSpec_files thunkSpec) $ \expectedPath -> \case
274− , _thunkType_json thunkType
248+ ThunkFileSpec_AttrCache -> Nothing <$ dirMayExist expectedPath
275− ]
249+ ThunkFileSpec_CheckoutIndicator -> liftIO (doesDirectoryExist (dir </> expectedPath)) <&> \case
276− optionalContents = Set.map (thunkDir </>) (_thunkType_optional thunkType)
250+ False -> Nothing
277−
251+ True -> Just ThunkData_Checkout
278− -- Ensure that there aren't any other files in the thunk
252+ ThunkFileSpec_FileMatches expectedContents -> handle (\(e :: IOError) -> throwError $ ReadThunkError_FileError e) $ do
279− -- NB: System.Directory.listDirectory returns the contents without the directory path
253+ actualContents <- liftIO (T.readFile $ dir </> expectedPath)
280− files <- liftIO $ Set.fromList . fmap (thunkDir </>) <$> listDirectory thunkDir
254+ case T.strip expectedContents == T.strip actualContents of
281− let unexpectedContents = files `Set.difference` (expectedContents `Set.union` optionalContents)
255+ True -> pure Nothing
282− missingContents = expectedContents `Set.difference` files
256+ False -> throwError $ ReadThunkError_FileDoesNotMatch (dir </> expectedPath) expectedContents
283− pure $ if Set.null unexpectedContents && Set.null missingContents
257+ ThunkFileSpec_Ptr parser -> handle (\(e :: IOError) -> throwError $ ReadThunkError_FileError e) $ do
284− then Just thunkType
258+ let path = dir </> expectedPath
285− else Nothing
259+ liftIO (doesFileExist path) >>= \case
286−
260+ False -> pure Nothing
287− pure $ case matches of
261+ True -> do
288− [singleMatch] -> Right singleMatch
262+ actualContents <- liftIO $ LBS.readFile path
289− [] -> Left ReadThunkError_UnrecognizedFiles
263+ case parser actualContents of
290− _ -> Left ReadThunkError_AmbiguousFiles
264+ Right v -> pure $ Just (ThunkData_Packed thunkSpec v)
265+ Left e -> throwError $ ReadThunkError_UnparseablePtr (dir </> expectedPath) e
267+ case nonEmpty datas of
268+ Nothing -> throwError ReadThunkError_UnrecognizedThunk
269+ Just xs -> fold1WithM xs $ \a b -> either throwError pure (mergeThunkData a b)
271+ rootPathsOnly = Set.fromList . mapMaybe takeRootDir . Map.keys
272+ takeRootDir = fmap NonEmpty.head . nonEmpty . splitPath
274+ expectedPaths = rootPathsOnly $ _thunkSpec_files thunkSpec
276+ requiredPaths = rootPathsOnly $ Map.filter isRequiredFileSpec $ _thunkSpec_files thunkSpec
277+ isRequiredFileSpec = \case
278+ ThunkFileSpec_FileMatches _ -> True
281+ dirMayExist expectedPath = liftIO (doesFileExist (dir </> expectedPath)) >>= \case
282+ True -> throwError $ ReadThunkError_UnrecognizedPaths $ expectedPath :| []
285+ -- Combine 'ThunkData' from different files, preferring "Checkout" over "Packed"
286+ mergeThunkData ThunkData_Checkout ThunkData_Checkout = Right ThunkData_Checkout
287+ mergeThunkData ThunkData_Checkout ThunkData_Packed{} = Left bothPackedAndUnpacked
288+ mergeThunkData ThunkData_Packed{} ThunkData_Checkout = Left bothPackedAndUnpacked
289+ mergeThunkData a@(ThunkData_Packed _ ptrA) (ThunkData_Packed _ ptrB) =
290+ if ptrA == ptrB then Right a else Left $ ReadThunkError_AmbiguousPackedState ptrA ptrB
292+ bothPackedAndUnpacked = ReadThunkError_UnrecognizedState "Both packed data and checkout present"
294+ fold1WithM (x :| xs) f = foldM f x xs
298+ => NonEmpty (NonEmpty ThunkSpec) -> FilePath -> m (Either ReadThunkError ThunkData)
299+readThunkWith specTypes dir = do
300+ dirFiles <- Set.fromList <$> liftIO (listDirectory dir)
301+ let specs = concatMap toList $ toList $ NonEmpty.transpose specTypes -- Interleave spec types so we try each one in a "fair" ordering
302+ flip fix specs $ \loop -> \case
303+ [] -> pure $ Left ReadThunkError_UnrecognizedThunk
304+ spec:rest -> runExceptT (matchThunkSpecToDir spec dir dirFiles) >>= \case
305+ Left e -> putLog Debug [i|Thunk specification ${_thunkSpec_name spec} did not match ${dir}: ${e}|] *> loop rest
306+ x@(Right _) -> x <$ putLog Debug [i|Thunk specification ${_thunkSpec_name spec} matched ${dir}|]
292-- | Read a thunk and validate that it is exactly a packed thunk.
308-- | Read a thunk and validate that it is exactly a packed thunk.
293-- If additional data is present, fail.
309-- If additional data is present, fail.
294−readPackedThunk :: FilePath -> IO (Either ReadThunkError ThunkPtr)
310+readThunk :: (MonadObelisk m) => FilePath -> m (Either ReadThunkError ThunkData)
295−readPackedThunk thunkDir = runExceptT $ do
311+readThunk = readThunkWith thunkSpecTypes
296− thunkType <- ExceptT $ findThunkType thunkTypes thunkDir
297− -- Ensure that we recognize the thunk loader
298− loader <- liftIO $ T.readFile $ thunkDir </> _thunkType_loader thunkType
299− unless (loader `elem` _thunkType_loaderVersions thunkType) $ do
300− throwError $ ReadThunkError_UnrecognizedLoader loader
302− txt <- liftIO $ LBS.readFile $ thunkDir </> _thunkType_json thunkType
303− case parseMaybe (_thunkType_parser thunkType) =<< Aeson.decode txt of
304− Nothing -> throwError $ ReadThunkError_UnparseablePtr txt
305− Just ptr -> return ptr
307parseThunkPtr :: (Aeson.Object -> Aeson.Parser ThunkSource) -> Aeson.Object -> Aeson.Parser ThunkPtr
313parseThunkPtr :: (Aeson.Object -> Aeson.Parser ThunkSource) -> Aeson.Object -> Aeson.Parser ThunkPtr
308parseThunkPtr parseSrc v = do
314parseThunkPtr parseSrc v = do
@@ -346,16 +352,18 @@ parseGitSource v = do
346overwriteThunk :: MonadObelisk m => FilePath -> ThunkPtr -> m ()
352overwriteThunk :: MonadObelisk m => FilePath -> ThunkPtr -> m ()
347overwriteThunk target thunk = do
353overwriteThunk target thunk = do
348 -- Ensure that this directory is a valid thunk (i.e. so we aren't losing any data)
354 -- Ensure that this directory is a valid thunk (i.e. so we aren't losing any data)
349− Right _ <- readThunk target
355+ readThunk target >>= \case
356+ Left e -> failWith [i|Invalid thunk at ${target}: ${e}|]
351 --TODO: Is there a safer way to do this overwriting?
359 --TODO: Is there a safer way to do this overwriting?
352− liftIO $ removeDirectoryRecursive target
360+ liftIO $ removePathForcibly target
353− liftIO $ createThunk target thunk
361+ createThunk target $ Right thunk
355−thunkPtrLoader :: ThunkPtr -> Text
363+thunkPtrToSpec :: ThunkPtr -> ThunkSpec
356−thunkPtrLoader thunk = case _thunkPtr_source thunk of
364+thunkPtrToSpec thunk = case _thunkPtr_source thunk of
357− ThunkSource_GitHub _ -> NonEmpty.head gitHubStandaloneLoaders
365+ ThunkSource_GitHub _ -> NonEmpty.head gitHubThunkSpecs
358− ThunkSource_Git _ -> NonEmpty.head plainGitStandaloneLoaders
366+ ThunkSource_Git _ -> NonEmpty.head gitThunkSpecs
360-- It's important that formatting be very consistent here, because
368-- It's important that formatting be very consistent here, because
361-- otherwise when people update thunks, their patches will be messy
369-- otherwise when people update thunks, their patches will be messy
@@ -402,35 +410,41 @@ encodeThunkPtrData (ThunkPtr rev src) = case src of
402 , confTrailingNewline = True
410 , confTrailingNewline = True
405−createThunk :: MonadIO m => FilePath -> ThunkPtr -> m ()
413+createThunk :: MonadObelisk m => FilePath -> Either ThunkSpec ThunkPtr -> m ()
406−createThunk target thunk = liftIO $ do
414+createThunk target ptrInfo =
407− createDirectoryIfMissing True (target </> attrCacheFileName)
415+ ifor_ (_thunkSpec_files spec) $ \path -> \case
408− T.writeFile (target </> "default.nix") (thunkPtrLoader thunk)
416+ ThunkFileSpec_FileMatches content -> withReadyPath path $ \p -> liftIO $ T.writeFile p content
409− let
417+ ThunkFileSpec_Ptr _ -> case ptrInfo of
410− jsonFileName = case _thunkPtr_source thunk of
418+ Left _ -> pure () -- We can't write the ptr without it
411− ThunkSource_GitHub _ -> "github"
412− ThunkSource_Git _ -> "git"
413− LBS.writeFile (target </> jsonFileName <.> "json") (encodeThunkPtrData thunk)
419+ Right ptr -> withReadyPath path $ \p -> liftIO $ LBS.writeFile p (encodeThunkPtrData ptr)
422+ spec = either id thunkPtrToSpec ptrInfo
423+ withReadyPath path f = do
424+ let fullPath = target </> path
425+ putLog Debug $ "Writing thunk file " <> T.pack fullPath
426+ liftIO $ createDirectoryIfMissing True $ takeDirectory fullPath
415createThunkWithLatest :: MonadObelisk m => FilePath -> ThunkSource -> m ()
429createThunkWithLatest :: MonadObelisk m => FilePath -> ThunkSource -> m ()
416createThunkWithLatest target s = do
430createThunkWithLatest target s = do
417 rev <- getLatestRev s
431 rev <- getLatestRev s
418− createThunk target $ ThunkPtr
432+ createThunk target $ Right $ ThunkPtr
419 { _thunkPtr_source = s
433 { _thunkPtr_source = s
420 , _thunkPtr_rev = rev
434 , _thunkPtr_rev = rev
423updateThunkToLatest :: MonadObelisk m => ThunkUpdateConfig -> FilePath -> m ()
437updateThunkToLatest :: MonadObelisk m => ThunkUpdateConfig -> FilePath -> m ()
424−updateThunkToLatest (ThunkUpdateConfig mBranch thunkConfig) target = withSpinner' ("Updating thunk " <> T.pack target <> " to latest") (pure $ const $ "Thunk " <> T.pack target <> " updated to latest") $ do
438+updateThunkToLatest (ThunkUpdateConfig mBranch thunkConfig) target = spinner $ do
425− checkThunkDirectory "ob thunk update directory cannot be '.'" target
439+ checkThunkDirectory target
426 -- check to see if thunk should be updated to a specific branch or just update it's current branch
440 -- check to see if thunk should be updated to a specific branch or just update it's current branch
427 case mBranch of
441 case mBranch of
428 Nothing -> do
442 Nothing -> do
429 (overwrite, ptr) <- readThunk target >>= \case
443 (overwrite, ptr) <- readThunk target >>= \case
430− Left err -> failWith $ T.pack $ "thunk update: " <> show err
444+ Left err -> failWith [i|Thunk update: ${err}|]
431 Right c -> case c of
445 Right c -> case c of
432− ThunkData_Packed t -> return (target, t)
446+ ThunkData_Packed _ t -> return (target, t)
433− ThunkData_Checkout _ -> failWith "cannot update an unpacked thunk"
447+ ThunkData_Checkout -> failWith "cannot update an unpacked thunk"
434 let src = _thunkPtr_source ptr
448 let src = _thunkPtr_source ptr
435 rev <- getLatestRev src
449 rev <- getLatestRev src
436 overwriteThunk overwrite $ modifyThunkPtrByConfig thunkConfig $ ThunkPtr
450 overwriteThunk overwrite $ modifyThunkPtrByConfig thunkConfig $ ThunkPtr
@@ -438,14 +452,12 @@ updateThunkToLatest (ThunkUpdateConfig mBranch thunkConfig) target = withSpinner
438 , _thunkPtr_rev = rev
452 , _thunkPtr_rev = rev
440 Just branch -> readThunk target >>= \case
454 Just branch -> readThunk target >>= \case
441− Left err -> failWith $ T.pack $ "thunk update: " <> show err
455+ Left err -> failWith [i|Thunk update: ${err}|]
442 Right c -> case c of
456 Right c -> case c of
443− ThunkData_Packed t -> case _thunkPtr_source t of
457+ ThunkData_Packed _ t -> setThunk thunkConfig target (thunkSourceToGitSource $ _thunkPtr_source t) branch
444− ThunkSource_Git tsg -> setThunk thunkConfig target tsg branch
445− ThunkSource_GitHub tsgh -> do
446− let tsg = forgetGithub False tsgh
447− setThunk thunkConfig target tsg branch
448− ThunkData_Checkout _ -> failWith $ T.pack $ "thunk located at " <> show target <> " is unpacked. Use ob thunk pack on the desired directory and then try ob thunk update again."
458+ ThunkData_Checkout -> failWith [i|Thunk located at ${target} is unpacked. Use 'ob thunk pack' on the desired directory and then try 'ob thunk update' again.|]
460+ spinner = withSpinner' ("Updating thunk " <> T.pack target <> " to latest") (pure $ const $ "Thunk " <> T.pack target <> " updated to latest")
450setThunk :: MonadObelisk m => ThunkConfig -> FilePath -> GitSource -> String -> m ()
462setThunk :: MonadObelisk m => ThunkConfig -> FilePath -> GitSource -> String -> m ()
451setThunk thunkConfig target gs branch = do
463setThunk thunkConfig target gs branch = do
@@ -455,21 +467,21 @@ setThunk thunkConfig target gs branch = do
456-- | All recognized github standalone loaders, ordered from newest to oldest.
468-- | All recognized github standalone loaders, ordered from newest to oldest.
457-- This tool will only ever produce the newest one when it writes a thunk.
469-- This tool will only ever produce the newest one when it writes a thunk.
458−gitHubStandaloneLoaders :: NonEmpty Text
470+gitHubThunkSpecs :: NonEmpty ThunkSpec
459−gitHubStandaloneLoaders =
471+gitHubThunkSpecs =
460− gitHubStandaloneLoaderV4 :|
472+ gitHubThunkSpecV5 :|
461− [ gitHubStandaloneLoaderV3
473+ [ gitHubThunkSpecV4
462− , gitHubStandaloneLoaderV2
474+ , gitHubThunkSpecV3
463− , gitHubStandaloneLoaderV1
475+ , gitHubThunkSpecV2
466−gitHubStandaloneLoaderV1 :: Text
479+gitHubThunkSpecV1 :: ThunkSpec
467−gitHubStandaloneLoaderV1 = T.unlines
480+gitHubThunkSpecV1 = legacyGitHubThunkSpec "github-v1"
468− [ "import ((import <nixpkgs> {}).fetchFromGitHub (builtins.fromJSON (builtins.readFile ./github.json)))"
481+ "import ((import <nixpkgs> {}).fetchFromGitHub (builtins.fromJSON (builtins.readFile ./github.json)))"
471−gitHubStandaloneLoaderV2 :: Text
483+gitHubThunkSpecV2 :: ThunkSpec
472−gitHubStandaloneLoaderV2 = T.unlines
484+gitHubThunkSpecV2 = legacyGitHubThunkSpec "github-v2" $ T.unlines
473 [ "# DO NOT HAND-EDIT THIS FILE" --TODO: Add something about how to get more info on Obelisk, etc.
485 [ "# DO NOT HAND-EDIT THIS FILE" --TODO: Add something about how to get more info on Obelisk, etc.
474 , "import ((import <nixpkgs> {}).fetchFromGitHub ("
486 , "import ((import <nixpkgs> {}).fetchFromGitHub ("
475 , " let json = builtins.fromJSON (builtins.readFile ./github.json);"
487 , " let json = builtins.fromJSON (builtins.readFile ./github.json);"
@@ -479,8 +491,8 @@ gitHubStandaloneLoaderV2 = T.unlines
482−gitHubStandaloneLoaderV3 :: Text
494+gitHubThunkSpecV3 :: ThunkSpec
483−gitHubStandaloneLoaderV3 = T.unlines
495+gitHubThunkSpecV3 = legacyGitHubThunkSpec "github-v3" $ T.unlines
484 [ "# DO NOT HAND-EDIT THIS FILE"
496 [ "# DO NOT HAND-EDIT THIS FILE"
486 , " fetch = { private ? false, ... }@args: if private && builtins.hasAttr \"fetchGit\" builtins"
498 , " fetch = { private ? false, ... }@args: if private && builtins.hasAttr \"fetchGit\" builtins"
@@ -499,8 +511,8 @@ gitHubStandaloneLoaderV3 = T.unlines
499 , "in import (fetch (builtins.fromJSON (builtins.readFile ./github.json)))"
511 , "in import (fetch (builtins.fromJSON (builtins.readFile ./github.json)))"
502−gitHubStandaloneLoaderV4 :: Text
514+gitHubThunkSpecV4 :: ThunkSpec
503−gitHubStandaloneLoaderV4 = T.unlines
515+gitHubThunkSpecV4 = legacyGitHubThunkSpec "github-v4" $ T.unlines
504 [ "# DO NOT HAND-EDIT THIS FILE"
516 [ "# DO NOT HAND-EDIT THIS FILE"
505 , "let fetch = { private ? false, fetchSubmodules ? false, owner, repo, rev, sha256, ... }:"
517 , "let fetch = { private ? false, fetchSubmodules ? false, owner, repo, rev, sha256, ... }:"
506 , " if !fetchSubmodules && !private then builtins.fetchTarball {"
518 , " if !fetchSubmodules && !private then builtins.fetchTarball {"
@@ -511,23 +523,50 @@ gitHubStandaloneLoaderV4 = T.unlines
511 , "in import (fetch (builtins.fromJSON (builtins.readFile ./github.json)))"
523 , "in import (fetch (builtins.fromJSON (builtins.readFile ./github.json)))"
514−plainGitStandaloneLoaders :: NonEmpty Text
526+legacyGitHubThunkSpec :: Text -> Text -> ThunkSpec
515−plainGitStandaloneLoaders =
527+legacyGitHubThunkSpec name loader = ThunkSpec name $ Map.fromList
516− plainGitStandaloneLoaderV3 :|
528+ [ ("default.nix", ThunkFileSpec_FileMatches $ T.strip loader)
517− [ plainGitStandaloneLoaderV1
529+ , ("github.json" , ThunkFileSpec_Ptr parseGitHubJsonBytes)
518− , plainGitStandaloneLoaderV2
530+ , (attrCacheFileName, ThunkFileSpec_AttrCache)
531+ , (".git", ThunkFileSpec_CheckoutIndicator)
521−plainGitStandaloneLoaderV1 :: Text
534+gitHubThunkSpecV5 :: ThunkSpec
522−plainGitStandaloneLoaderV1 = T.unlines
535+gitHubThunkSpecV5 = mkThunkSpec "github-v5" "github.json" parseGitHubJsonBytes [here|
536+# DO NOT HAND-EDIT THIS FILE
537+let fetch = { private ? false, fetchSubmodules ? false, owner, repo, rev, sha256, ... }:
538+ if !fetchSubmodules && !private then builtins.fetchTarball {
539+ url = "https://github.com/${owner}/${repo}/archive/${rev}.tar.gz"; inherit sha256;
540+ } else (import <nixpkgs> {}).fetchFromGitHub {
541+ inherit owner repo rev sha256 fetchSubmodules private;
543+ json = builtins.fromJSON (builtins.readFile ./github.json);
547+parseGitHubJsonBytes :: LBS.ByteString -> Either String ThunkPtr
548+parseGitHubJsonBytes = parseJsonObject $ parseThunkPtr $ \v ->
549+ ThunkSource_GitHub <$> parseGitHubSource v <|> ThunkSource_Git <$> parseGitSource v
551+gitThunkSpecs :: NonEmpty ThunkSpec
560+gitThunkSpecV1 :: ThunkSpec
561+gitThunkSpecV1 = legacyGitThunkSpec "git-v1" $ T.unlines
523 [ "# DO NOT HAND-EDIT THIS FILE"
562 [ "# DO NOT HAND-EDIT THIS FILE"
524 , "let fetchGit = {url, rev, ref ? null, branch ? null, sha256 ? null, fetchSubmodules ? null}:"
563 , "let fetchGit = {url, rev, ref ? null, branch ? null, sha256 ? null, fetchSubmodules ? null}:"
525 , " assert !fetchSubmodules; (import <nixpkgs> {}).fetchgit { inherit url rev sha256; };"
564 , " assert !fetchSubmodules; (import <nixpkgs> {}).fetchgit { inherit url rev sha256; };"
526 , "in import (fetchGit (builtins.fromJSON (builtins.readFile ./git.json)))"
565 , "in import (fetchGit (builtins.fromJSON (builtins.readFile ./git.json)))"
529−plainGitStandaloneLoaderV2 :: Text
568+gitThunkSpecV2 :: ThunkSpec
530−plainGitStandaloneLoaderV2 = T.unlines
569+gitThunkSpecV2 = legacyGitThunkSpec "git-v2" $ T.unlines
531 [ "# DO NOT HAND-EDIT THIS FILE"
570 [ "# DO NOT HAND-EDIT THIS FILE"
532 , "let fetchGit = {url, rev, ref ? null, branch ? null, sha256 ? null, fetchSubmodules ? null}:"
571 , "let fetchGit = {url, rev, ref ? null, branch ? null, sha256 ? null, fetchSubmodules ? null}:"
533 , " if builtins.hasAttr \"fetchGit\" builtins"
572 , " if builtins.hasAttr \"fetchGit\" builtins"
@@ -536,8 +575,10 @@ plainGitStandaloneLoaderV2 = T.unlines
536 , "in import (fetchGit (builtins.fromJSON (builtins.readFile ./git.json)))"
575 , "in import (fetchGit (builtins.fromJSON (builtins.readFile ./git.json)))"
539−plainGitStandaloneLoaderV3 :: Text
578+-- This loader has a bug because @builtins.fetchGit@ is not given a @ref@
540−plainGitStandaloneLoaderV3 = T.unlines
579+-- and will fail to find commits without this because it does shallow clones.
580+gitThunkSpecV3 :: ThunkSpec
581+gitThunkSpecV3 = legacyGitThunkSpec "git-v3" $ T.unlines
541 [ "# DO NOT HAND-EDIT THIS FILE"
582 [ "# DO NOT HAND-EDIT THIS FILE"
542 , "let fetch = {url, rev, ref ? null, sha256 ? null, fetchSubmodules ? false, private ? false, ...}:"
583 , "let fetch = {url, rev, ref ? null, sha256 ? null, fetchSubmodules ? false, private ? false, ...}:"
543 , " let realUrl = let firstChar = builtins.substring 0 1 url; in"
584 , " let realUrl = let firstChar = builtins.substring 0 1 url; in"
@@ -552,10 +593,69 @@ plainGitStandaloneLoaderV3 = T.unlines
552 , "in import (fetch (builtins.fromJSON (builtins.readFile ./git.json)))"
593 , "in import (fetch (builtins.fromJSON (builtins.readFile ./git.json)))"
555−thunkFileNames :: [FilePath]
596+gitThunkSpecV4 :: ThunkSpec
556−thunkFileNames = ["default.nix", "github.json", "git.json"]
597+gitThunkSpecV4 = legacyGitThunkSpec "git-v4" $ T.unlines
598+ [ "# DO NOT HAND-EDIT THIS FILE"
599+ , "let fetch = {url, rev, branch ? null, sha256 ? null, fetchSubmodules ? false, private ? false, ...}:"
600+ , " let realUrl = let firstChar = builtins.substring 0 1 url; in"
601+ , " if firstChar == \"/\" then /. + url"
602+ , " else if firstChar == \".\" then ./. + url"
604+ , " in if !fetchSubmodules && private then builtins.fetchGit {"
605+ , " url = realUrl; inherit rev;"
606+ , " ${if branch == null then null else \"ref\"} = branch;"
607+ , " } else (import <nixpkgs> {}).fetchgit {"
608+ , " url = realUrl; inherit rev sha256;"
610+ , "in import (fetch (builtins.fromJSON (builtins.readFile ./git.json)))"
613+legacyGitThunkSpec :: Text -> Text -> ThunkSpec
614+legacyGitThunkSpec name loader = ThunkSpec name $ Map.fromList
615+ [ ("default.nix", ThunkFileSpec_FileMatches $ T.strip loader)
616+ , ("git.json" , ThunkFileSpec_Ptr parseGitJsonBytes)
617+ , (attrCacheFileName, ThunkFileSpec_AttrCache)
618+ , (".git", ThunkFileSpec_CheckoutIndicator)
558−--TODO: when checking something out, make a shallow clone
621+gitThunkSpecV5 :: ThunkSpec
622+gitThunkSpecV5 = mkThunkSpec "git-v5" "git.json" parseGitJsonBytes [here|
623+# DO NOT HAND-EDIT THIS FILE
624+let fetch = {url, rev, branch ? null, sha256 ? null, fetchSubmodules ? false, private ? false, ...}:
625+ let realUrl = let firstChar = builtins.substring 0 1 url; in
626+ if firstChar == "/" then /. + url
627+ else if firstChar == "." then ./. + url
629+ in if !fetchSubmodules && private then builtins.fetchGit {
630+ url = realUrl; inherit rev;
631+ ${if branch == null then null else "ref"} = branch;
632+ } else (import <nixpkgs> {}).fetchgit {
633+ url = realUrl; inherit rev sha256;
635+ json = builtins.fromJSON (builtins.readFile ./git.json);
639+parseGitJsonBytes :: LBS.ByteString -> Either String ThunkPtr
640+parseGitJsonBytes = parseJsonObject $ parseThunkPtr $ fmap ThunkSource_Git . parseGitSource
642+mkThunkSpec :: Text -> FilePath -> (LBS.ByteString -> Either String ThunkPtr) -> Text -> ThunkSpec
643+mkThunkSpec name jsonFileName parser srcNix = ThunkSpec name $ Map.fromList
644+ [ ("default.nix", ThunkFileSpec_FileMatches defaultNixViaSrc)
645+ , ("thunk.nix", ThunkFileSpec_FileMatches srcNix)
646+ , (jsonFileName, ThunkFileSpec_Ptr parser)
647+ , (attrCacheFileName, ThunkFileSpec_AttrCache)
648+ , (normalise $ unpackedDirName </> ".git", ThunkFileSpec_CheckoutIndicator)
651+ defaultNixViaSrc = [here|
652+# DO NOT HAND-EDIT THIS FILE
653+import (import ./thunk.nix)
657+parseJsonObject :: (Aeson.Object -> Aeson.Parser a) -> LBS.ByteString -> Either String a
658+parseJsonObject p bytes = Aeson.parseEither p =<< Aeson.eitherDecode bytes
560-- | Checks a cache directory to see if there is a fresh symlink
660-- | Checks a cache directory to see if there is a fresh symlink
561-- to the result of building an attribute of a thunk.
661-- to the result of building an attribute of a thunk.
@@ -563,44 +663,49 @@ thunkFileNames = ["default.nix", "github.json", "git.json"]
563-- and the result is symlinked into the cache.
663-- and the result is symlinked into the cache.
564nixBuildThunkAttrWithCache
664nixBuildThunkAttrWithCache
565 :: MonadObelisk m
665 :: MonadObelisk m
566− => FilePath
667+ -> FilePath
567 -- ^ Path to directory containing Thunk
668 -- ^ Path to directory containing Thunk
568 -> String
669 -> String
569 -- ^ Attribute to build
670 -- ^ Attribute to build
570− -> m FilePath
671+ -> m (Maybe FilePath)
571 -- ^ Symlink to cached or built nix output
672 -- ^ Symlink to cached or built nix output
572-- WARNING: If the thunk uses an impure reference such as '<nixpkgs>'
673-- WARNING: If the thunk uses an impure reference such as '<nixpkgs>'
573-- the caching mechanism will fail as it merely measures the modification
674-- the caching mechanism will fail as it merely measures the modification
574-- time of the cache link and the expression to build.
675-- time of the cache link and the expression to build.
575−nixBuildThunkAttrWithCache thunkDir attr = do
676+nixBuildThunkAttrWithCache thunkSpec thunkDir attr = do
576− --NB: Expects thunkDir to be normalised with no trailing path separator.
577− --This should be guaranteed by the command argument parser.
578− let cacheErrHandler e
579− | isDoesNotExistError e = return Nothing -- expected from a cache miss
580− | otherwise = putLog Error (T.pack $ displayException e) >> return Nothing
581− cacheDir = thunkDir </> attrCacheFileName
582− cachePath = cacheDir </> attr <.> "out"
583 latestChange <- liftIO $ do
677 latestChange <- liftIO $ do
584− createDirectoryIfMissing False cacheDir
678+ let
585− let getModificationTimeMaybe = fmap rightToMaybe . try @IOError . getModificationTime
679+ getModificationTimeMaybe = fmap rightToMaybe . try @IOError . getModificationTime
680+ thunkFileNames = Map.keys $ _thunkSpec_files thunkSpec
586− maximum . catMaybes <$> mapM (getModificationTimeMaybe . (thunkDir </>)) thunkFileNames
681+ maximum . catMaybes <$> traverse (getModificationTimeMaybe . (thunkDir </>)) thunkFileNames
683+ let cachePaths' = nonEmpty $ Map.keys $ Map.filter (\case ThunkFileSpec_AttrCache -> True; _ -> False) $
684+ _thunkSpec_files thunkSpec
685+ for cachePaths' $ \cachePaths ->
686+ fmap NonEmpty.head $ for cachePaths $ \cacheDir -> do
688+ cachePath = thunkDir </> cacheDir </> attr <.> "out"
690+ | isDoesNotExistError e = pure Nothing -- expected from a cache miss
691+ | otherwise = Nothing <$ putLog Error (T.pack $ displayException e)
587− cacheHit <- handle cacheErrHandler $ do
692+ cacheHit <- handle cacheErrHandler $ do
588− cacheTime <- liftIO $ posixSecondsToUTCTime . realToFrac . modificationTime <$> getSymbolicLinkStatus cachePath
693+ cacheTime <- liftIO $ posixSecondsToUTCTime . realToFrac . modificationTime <$> getSymbolicLinkStatus cachePath
589− return $ if latestChange <= cacheTime
694+ pure $ if latestChange <= cacheTime
590− then Just cachePath
695+ then Just cachePath
591− else Nothing
696+ else Nothing
592− case cacheHit of
697+ case cacheHit of
593− Just c -> return c
698+ Just c -> pure c
594− Nothing -> do
699+ Nothing -> do
595− putLog Warning $ T.pack $ mconcat [thunkDir, ": ", attr, " not cached, building ..."]
700+ putLog Warning $ T.pack $ mconcat [thunkDir, ": ", attr, " not cached, building ..."]
701+ liftIO $ createDirectoryIfMissing True (takeDirectory cachePath)
596− _ <- nixCmd $ NixCmd_Build $ def
702+ (cachePath <$) $ nixCmd $ NixCmd_Build $ def
597− Lens.& nixBuildConfig_outLink Lens..~ OutLink_IndirectRoot cachePath
703+ & nixBuildConfig_outLink .~ OutLink_IndirectRoot cachePath
598− Lens.& nixCmdConfig_target Lens..~ Target
704+ & nixCmdConfig_target .~ Target
599− { _target_path = Just thunkDir
705+ { _target_path = Just thunkDir
600− , _target_attr = Just attr
706+ , _target_attr = Just attr
601− , _target_expr = Nothing
707+ , _target_expr = Nothing
605-- | Build a nix attribute, and cache the result if possible
710-- | Build a nix attribute, and cache the result if possible
606nixBuildAttrWithCache
711nixBuildAttrWithCache
@@ -611,13 +716,15 @@ nixBuildAttrWithCache
611 -- ^ Attribute to build
716 -- ^ Attribute to build
612 -> m FilePath
717 -> m FilePath
613 -- ^ Symlink to cached or built nix output
718 -- ^ Symlink to cached or built nix output
614−nixBuildAttrWithCache exprPath attr = do
719+nixBuildAttrWithCache exprPath attr = readThunk exprPath >>= \case
615− readThunk exprPath >>= \case
616− -- Only packed thunks are cached. in particular, checkouts are not
720+ -- Only packed thunks are cached. In particular, checkouts are not.
721+ Right (ThunkData_Packed spec _) ->
617− Right (ThunkData_Packed _) -> nixBuildThunkAttrWithCache exprPath attr
722+ maybe build pure =<< nixBuildThunkAttrWithCache spec exprPath attr
618− _ -> nixCmd $ NixCmd_Build $ def
725+ build = nixCmd $ NixCmd_Build $ def
619− Lens.& nixBuildConfig_outLink Lens..~ OutLink_None
726+ & nixBuildConfig_outLink .~ OutLink_None
620− Lens.& nixCmdConfig_target Lens..~ Target
727+ & nixCmdConfig_target .~ Target
621 { _target_path = Just exprPath
728 { _target_path = Just exprPath
622 , _target_attr = Just attr
729 , _target_attr = Just attr
623 , _target_expr = Nothing
730 , _target_expr = Nothing
@@ -638,7 +745,7 @@ updateThunk p f = withSystemTempDirectory "obelisk-thunkptr-" $ \tmpDir -> do
639 copyThunkToTmp tmpDir thunkDir = readThunk thunkDir >>= \case
746 copyThunkToTmp tmpDir thunkDir = readThunk thunkDir >>= \case
640 Left err -> failWith $ "withThunkUnpacked: " <> T.pack (show err)
747 Left err -> failWith $ "withThunkUnpacked: " <> T.pack (show err)
641− Right (ThunkData_Packed _) -> do
748+ Right ThunkData_Packed{} -> do
642 let tmpThunk = tmpDir </> "thunk"
749 let tmpThunk = tmpDir </> "thunk"
643 callProcessAndLogOutput (Notice, Error) $
750 callProcessAndLogOutput (Notice, Error) $
644 proc cp ["-r", "-T", thunkDir, tmpThunk]
751 proc cp ["-r", "-T", thunkDir, tmpThunk]
@@ -652,62 +759,81 @@ updateThunk p f = withSystemTempDirectory "obelisk-thunkptr-" $ \tmpDir -> do
652finalMsg :: Bool -> (a -> Text) -> Maybe (a -> Text)
759finalMsg :: Bool -> (a -> Text) -> Maybe (a -> Text)
653finalMsg noTrail s = if noTrail then Nothing else Just s
760finalMsg noTrail s = if noTrail then Nothing else Just s
655−unpackThunk :: MonadObelisk m => FilePath -> m ()
656−unpackThunk = unpackThunk' False
658-- | Check that we are not somewhere inside the thunk directory
762-- | Check that we are not somewhere inside the thunk directory
659−checkThunkDirectory :: MonadObelisk m => Text -> FilePath -> m ()
763+checkThunkDirectory :: MonadObelisk m => FilePath -> m ()
660−checkThunkDirectory msg thunkDir = do
764+checkThunkDirectory thunkDir = do
661 currentDir <- liftIO getCurrentDirectory
765 currentDir <- liftIO getCurrentDirectory
662 thunkDir' <- liftIO $ canonicalizePath thunkDir
766 thunkDir' <- liftIO $ canonicalizePath thunkDir
663− when (thunkDir' `L.isInfixOf` currentDir) $ failWith msg
767+ when (thunkDir' `L.isInfixOf` currentDir) $
768+ failWith [i|Can't perform thunk operations from within the thunk directory: ${thunkDir}|]
770+ -- Don't let thunk commands work when directly given an unpacked repo
771+ when (takeFileName thunkDir == unpackedDirName) $
772+ readThunk (takeDirectory thunkDir) >>= \case
773+ Right _ -> failWith [i|Refusing to perform thunk operation on ${thunkDir} because it is a thunk's unpacked source|]
776+unpackThunk :: MonadObelisk m => FilePath -> m ()
777+unpackThunk = unpackThunk' False
665unpackThunk' :: MonadObelisk m => Bool -> FilePath -> m ()
779unpackThunk' :: MonadObelisk m => Bool -> FilePath -> m ()
666−unpackThunk' noTrail thunkDir = checkThunkDirectory "Can't pack/unpack from within the thunk directory" thunkDir >> readThunk thunkDir >>= \case
780+unpackThunk' noTrail thunkDir = checkThunkDirectory thunkDir *> readThunk thunkDir >>= \case
667− Left err -> failWith $ "thunk unpack: " <> T.pack (show err)
781+ Left err -> failWith [i|Invalid thunk at ${thunkDir}: ${err}|]
668 --TODO: Overwrite option that rechecks out thunk; force option to do so even if working directory is dirty
782 --TODO: Overwrite option that rechecks out thunk; force option to do so even if working directory is dirty
669− Right (ThunkData_Checkout _) -> failWith "thunk unpack: thunk is already unpacked"
783+ Right ThunkData_Checkout -> failWith [i|Thunk at ${thunkDir} is already unpacked|]
670− Right (ThunkData_Packed tptr) -> do
784+ Right (ThunkData_Packed _ tptr) -> do
671 let (thunkParent, thunkName) = splitFileName thunkDir
785 let (thunkParent, thunkName) = splitFileName thunkDir
672− withTempDirectory thunkParent thunkName $ \tmpRepo -> do
786+ withTempDirectory thunkParent thunkName $ \tmpThunk -> do
673− let obGitDir = tmpRepo </> ".git" </> "obelisk"
787+ let
788+ gitSrc = thunkSourceToGitSource $ _thunkPtr_source tptr
674− s = case _thunkPtr_source tptr of
789+ newSpec = case _thunkPtr_source tptr of
675− ThunkSource_GitHub s' -> forgetGithub False s'
790+ ThunkSource_GitHub _ -> NonEmpty.head gitHubThunkSpecs
676− ThunkSource_Git s' -> s'
791+ ThunkSource_Git _ -> NonEmpty.head gitThunkSpecs
677 withSpinner' ("Fetching thunk " <> T.pack thunkName)
792 withSpinner' ("Fetching thunk " <> T.pack thunkName)
678 (finalMsg noTrail $ const $ "Fetched thunk " <> T.pack thunkName) $ do
793 (finalMsg noTrail $ const $ "Fetched thunk " <> T.pack thunkName) $ do
794+ let unpackedPath = tmpThunk </> unpackedDirName
795+ gitCloneForThunkUnpack gitSrc (_thunkRev_commit $ _thunkPtr_rev tptr) unpackedPath
797+ let normalizeMore = dropTrailingPathSeparator . normalise
798+ when (normalizeMore unpackedPath /= normalizeMore tmpThunk) $ -- Only write meta data if the checkout is not inplace
799+ createThunk tmpThunk $ Left newSpec
802+ removePathForcibly thunkDir
803+ renameDirectory tmpThunk thunkDir
805+gitCloneForThunkUnpack
807+ => GitSource -- ^ Git source to use
808+ -> Ref hash -- ^ Commit hash to reset to
809+ -> FilePath -- ^ Directory to clone into
811+gitCloneForThunkUnpack gitSrc commit dir = do
679− let git = callProcessAndLogOutput (Notice, Notice) . gitProc tmpRepo
812+ let git = callProcessAndLogOutput (Notice, Notice) . gitProc dir
680− git $ [ "clone" ]
813+ git $ [ "clone" ]
681− ++ ("--recursive" <$ guard (_gitSource_fetchSubmodules s))
814+ ++ ["--recursive" | _gitSource_fetchSubmodules gitSrc]
682− ++ [ T.unpack $ gitUriToText $ _gitSource_url s ]
815+ ++ [ T.unpack $ gitUriToText $ _gitSource_url gitSrc ]
683− ++ do branch <- maybeToList $ _gitSource_branch s
816+ ++ do branch <- maybeToList $ _gitSource_branch gitSrc
684− [ "--branch", T.unpack $ untagName branch ]
817+ [ "--branch", T.unpack $ untagName branch ]
685− git ["reset", "--hard", Ref.toHexString $ _thunkRev_commit $ _thunkPtr_rev tptr]
818+ git ["reset", "--hard", Ref.toHexString commit]
686− when (_gitSource_fetchSubmodules s) $
819+ when (_gitSource_fetchSubmodules gitSrc) $
687− git ["submodule", "update", "--recursive", "--init"]
820+ git ["submodule", "update", "--recursive", "--init"]
689− liftIO $ createDirectory obGitDir
690− callProcessAndLogOutput (Notice, Error) $
691− proc cp ["-r", "-T", thunkDir </> ".", obGitDir </> "orig-thunk"]
692− callProcessAndLogOutput (Notice, Error) $
693− proc "rm" ["-r", thunkDir]
694− callProcessAndLogOutput (Notice, Error) $
695− proc "mv" ["-T", tmpRepo, thunkDir]
697--TODO: add a rollback mode to pack to the original thunk
822--TODO: add a rollback mode to pack to the original thunk
698packThunk :: MonadObelisk m => ThunkPackConfig -> FilePath -> m ThunkPtr
823packThunk :: MonadObelisk m => ThunkPackConfig -> FilePath -> m ThunkPtr
699packThunk = packThunk' False
824packThunk = packThunk' False
701packThunk' :: MonadObelisk m => Bool -> ThunkPackConfig -> FilePath -> m ThunkPtr
826packThunk' :: MonadObelisk m => Bool -> ThunkPackConfig -> FilePath -> m ThunkPtr
702−packThunk' noTrail (ThunkPackConfig force thunkConfig) thunkDir = checkThunkDirectory "Can't pack/unpack from within the thunk directory" thunkDir >> readThunk thunkDir >>= \case
827+packThunk' noTrail (ThunkPackConfig force thunkConfig) thunkDir = checkThunkDirectory thunkDir *> readThunk thunkDir >>= \case
703− Left err -> failWith $ T.pack $ "thunk pack: " <> show err
704− Right (ThunkData_Packed _) -> failWith "pack: thunk is already packed"
828+ Right ThunkData_Packed{} -> failWith [i|Thunk at ${thunkDir} is is already packed|]
705− Right (ThunkData_Checkout _) -> do
829+ _ -> withSpinner'
706− withSpinner' ("Packing thunk " <> T.pack thunkDir)
830+ ("Packing thunk " <> T.pack thunkDir)
707− (finalMsg noTrail $ const $ "Packed thunk " <> T.pack thunkDir) $ do
831+ (finalMsg noTrail $ const $ "Packed thunk " <> T.pack thunkDir) $
833+ let checkClean = if force then CheckClean_NoCheck else CheckClean_FullCheck
708− thunkPtr <- modifyThunkPtrByConfig thunkConfig <$> getThunkPtr (not force) thunkDir (_thunkConfig_private thunkConfig)
834+ thunkPtr <- modifyThunkPtrByConfig thunkConfig <$> getThunkPtr checkClean thunkDir (_thunkConfig_private thunkConfig)
709− callProcessAndLogOutput (Debug, Error) $ proc "rm" ["-rf", thunkDir]
835+ liftIO $ removePathForcibly thunkDir
710− liftIO $ createThunk thunkDir thunkPtr
836+ createThunk thunkDir $ Right thunkPtr
711 pure thunkPtr
837 pure thunkPtr
713modifyThunkPtrByConfig :: ThunkConfig -> ThunkPtr -> ThunkPtr
839modifyThunkPtrByConfig :: ThunkConfig -> ThunkPtr -> ThunkPtr
@@ -718,29 +844,43 @@ modifyThunkPtrByConfig (ThunkConfig markPrivate') ptr = case markPrivate' of
718 ThunkSource_GitHub s -> ThunkSource_GitHub $ s { _gitHubSource_private = markPrivate }
844 ThunkSource_GitHub s -> ThunkSource_GitHub $ s { _gitHubSource_private = markPrivate }
848+ = CheckClean_FullCheck
849+ -- ^ Check that the repo is clean, including .gitignored files
850+ | CheckClean_NotIgnored
851+ -- ^ Check that the repo is clean, not including .gitignored files
852+ | CheckClean_NoCheck
853+ -- ^ Don't check that the repo is clean
721−getThunkPtr :: forall m. MonadObelisk m => Bool -> FilePath -> Maybe Bool -> m ThunkPtr
855+getThunkPtr :: forall m. MonadObelisk m => CheckClean -> FilePath -> Maybe Bool -> m ThunkPtr
722−getThunkPtr checkClean thunkDir mPrivate = do
856+getThunkPtr gitCheckClean dir mPrivate = do
857+ let repoLocations = nubOrd $ map (first normalise)
858+ [(".git", "."), (unpackedDirName </> ".git", unpackedDirName)]
859+ repoLocation' <- liftIO $ flip findM repoLocations $ doesDirectoryExist . (dir </>) . fst
860+ thunkDir <- case repoLocation' of
861+ Nothing -> failWith [i|Can't find an unpacked thunk in ${dir}|]
862+ Just (_, path) -> pure $ normalise $ dir </> path
864+ let (checkClean, checkIgnored) = case gitCheckClean of
865+ CheckClean_FullCheck -> (True, True)
866+ CheckClean_NotIgnored -> (True, False)
867+ CheckClean_NoCheck -> (False, False)
723− when checkClean $ ensureCleanGitRepo thunkDir True
868+ when checkClean $ ensureCleanGitRepo thunkDir checkIgnored
724 "thunk pack: thunk checkout contains unsaved modifications"
869 "thunk pack: thunk checkout contains unsaved modifications"
726 -- Check whether there are any stashes
871 -- Check whether there are any stashes
872+ when checkClean $ do
727− stashOutput <- readGitProcess thunkDir ["stash", "list"]
873+ stashOutput <- readGitProcess thunkDir ["stash", "list"]
728− when checkClean $ case T.null stashOutput of
874+ unless (T.null stashOutput) $
730 failWith $ T.unlines $
875 failWith $ T.unlines $
731 [ "thunk pack: thunk checkout has stashes"
876 [ "thunk pack: thunk checkout has stashes"
732 , "git stash list:"
877 , "git stash list:"
733 ] ++ T.lines stashOutput
878 ] ++ T.lines stashOutput
736 -- Get current branch
880 -- Get current branch
737 (mCurrentBranch, mCurrentCommit) <- do
881 (mCurrentBranch, mCurrentCommit) <- do
740− <$> readGitProcess thunkDir ["rev-parse", "--abbrev-ref", "HEAD"]
882+ b <- listToMaybe . T.lines <$> readGitProcess thunkDir ["rev-parse", "--abbrev-ref", "HEAD"]
743− <$> readGitProcess thunkDir ["rev-parse", "HEAD"]
883+ c <- listToMaybe . T.lines <$> readGitProcess thunkDir ["rev-parse", "HEAD"]
744 case b of
884 case b of
745 (Just "HEAD") -> failWith $ T.unlines
885 (Just "HEAD") -> failWith $ T.unlines
746 [ "thunk pack: You are in 'detached HEAD' state."
886 [ "thunk pack: You are in 'detached HEAD' state."
@@ -751,7 +891,7 @@ getThunkPtr checkClean thunkDir mPrivate = do
752 -- Get information on all branches and their (optional) designated upstream
892 -- Get information on all branches and their (optional) designated upstream
753 -- correspondents
893 -- correspondents
754− (headDump :: [Text]) <- T.lines <$> readGitProcess thunkDir
894+ headDump :: [Text] <- T.lines <$> readGitProcess thunkDir
755 [ "for-each-ref"
895 [ "for-each-ref"
756 , "--format=%(refname:short) %(upstream:short) %(upstream:remotename)"
896 , "--format=%(refname:short) %(upstream:short) %(upstream:remotename)"
757 , "refs/heads/"
897 , "refs/heads/"
@@ -797,7 +937,7 @@ getThunkPtr checkClean thunkDir mPrivate = do
799 -- loosely by https://stackoverflow.com/questions/7773939/show-git-ahead-and-behind-info-for-all-branches-including-remotes
939 -- loosely by https://stackoverflow.com/questions/7773939/show-git-ahead-and-behind-info-for-all-branches-including-remotes
800− stats <- iforM headUpstream $ \branch (upstream, _remote) -> do
940+ stats <- ifor headUpstream $ \branch (upstream, _remote) -> do
801 (stat :: [Text]) <- T.lines <$> readGitProcess thunkDir
941 (stat :: [Text]) <- T.lines <$> readGitProcess thunkDir
802 [ "rev-list", "--left-right"
942 [ "rev-list", "--left-right"
803 , T.unpack branch <> "..." <> T.unpack upstream
943 , T.unpack branch <> "..." <> T.unpack upstream
@@ -821,8 +961,9 @@ getThunkPtr checkClean thunkDir mPrivate = do
821 \pushed but this repo's remote tracking branches don't know it.)"
961 \pushed but this repo's remote tracking branches don't know it.)"
964+ when checkClean $ do
824− -- We assume it's safe to pack the thunk at this point
965+ -- We assume it's safe to pack the thunk at this point
825− putLog Informational "All changes safe in git remotes. OK to pack thunk."
966+ putLog Informational "All changes safe in git remotes. OK to pack thunk."
827 let remote = maybe "origin" snd $ flip Map.lookup headUpstream =<< mCurrentBranch
968 let remote = maybe "origin" snd $ flip Map.lookup headUpstream =<< mCurrentBranch
@@ -840,9 +981,7 @@ getThunkPtr checkClean thunkDir mPrivate = do
840-- | Get the latest revision available from the given source
981-- | Get the latest revision available from the given source
841getLatestRev :: MonadObelisk m => ThunkSource -> m ThunkRev
982getLatestRev :: MonadObelisk m => ThunkSource -> m ThunkRev
842getLatestRev os = do
983getLatestRev os = do
843− let gitS = case os of
984+ let gitS = thunkSourceToGitSource os
844− ThunkSource_GitHub s -> forgetGithub False s
845− ThunkSource_Git s -> s
846 (_, commit) <- gitGetCommitBranch (_gitSource_url gitS) (untagName <$> _gitSource_branch gitS)
985 (_, commit) <- gitGetCommitBranch (_gitSource_url gitS) (untagName <$> _gitSource_branch gitS)
847 case os of
986 case os of
848 ThunkSource_GitHub s -> githubThunkRev s commit
987 ThunkSource_GitHub s -> githubThunkRev s commit