@@ -5,67 +5,48 @@
55{-# LANGUAGE MultiWayIf #-}
66{-# LANGUAGE OverloadedStrings #-}
77{-# LANGUAGE PatternGuards #-}
8+{-# LANGUAGE QuasiQuotes #-}
89{-# LANGUAGE ScopedTypeVariables #-}
910{-# LANGUAGE TypeApplications #-}
10−module Obelisk.Command.Thunk
11− ( GitHubSource (..)
12− , GitUri (..)
13− , ReadThunkError (..)
14− , ThunkConfig (..)
15− , ThunkData (..)
16− , ThunkPackConfig (..)
17− , ThunkPtr (..)
18− , ThunkRev (..)
19− , ThunkSource (..)
20− , ThunkUpdateConfig (..)
21− , attrCacheFileName
22− , createThunk
23− , createThunkWithLatest
24− , getLatestRev
25− , getThunkGitBranch
26− , getThunkPtr
27− , gitUriToText
28− , nixBuildAttrWithCache
29− , nixBuildThunkAttrWithCache
30− , packThunk
31− , parseGitUri
32− , readThunk
33− , unpackThunk
34− , updateThunk
35− , updateThunkToLatest
36− , uriThunkPtr
37− ) where
11+module Obelisk.Command.Thunk where
3812
3913import Control.Applicative
4014import Control.Exception (displayException, try)
41−import qualified Control.Lens as Lens
42−import Control.Lens.Indexed hiding ((<.>))
15+import Control.Lens (ifor, ifor_, (.~))
4316import Control.Monad
44−import Control.Monad.Catch (handle)
17+import Control.Monad.Extra (findM)
18+import Control.Monad.Catch (MonadCatch, handle)
4519import Control.Monad.Except
4620import Data.Aeson ((.=))
4721import qualified Data.Aeson as Aeson
4822import Data.Aeson.Encode.Pretty
4923import qualified Data.Aeson.Types as Aeson
24+import Data.Bifunctor (first)
5025import qualified Data.ByteString.Lazy as LBS
5126import Data.Containers.ListUtils (nubOrd)
5227import Data.Default
5328import Data.Either.Combinators (fromRight', rightToMaybe)
29+import Data.Foldable (toList)
30+import Data.Function ((&))
31+import Data.Functor ((<&>))
5432import Data.Git.Ref (Ref)
5533import qualified Data.Git.Ref as Ref
5634import qualified Data.List as L
57−import Data.List.NonEmpty (NonEmpty (..))
35+import Data.List.NonEmpty (NonEmpty (..), nonEmpty)
5836import qualified Data.List.NonEmpty as NonEmpty
5937import Data.Map (Map)
6038import qualified Data.Map as Map
6139import Data.Maybe
6240import Data.Set (Set)
6341import qualified Data.Set as Set
42+import Data.String.Here.Interpolated (i)
43+import Data.String.Here.Uninterpolated (here)
6444import Data.Text (Text)
6545import qualified Data.Text as T
6646import Data.Text.Encoding
6747import qualified Data.Text.IO as T
6848import Data.Time.Clock.POSIX (posixSecondsToUTCTime)
49+import Data.Traversable (for)
6950import Data.Yaml (parseMaybe)
7051import GitHub
7152import GitHub.Data.Name
@@ -84,11 +65,10 @@ import Obelisk.Command.Utils
8465
8566--TODO: Support symlinked thunk data
8667data ThunkData
87− = ThunkData_Packed ThunkPtr
68+ = ThunkData_Packed ThunkSpec ThunkPtr
8869 -- ^ Packed thunk
89− | ThunkData_Checkout (Maybe ThunkPtr)
70+ | ThunkData_Checkout
9071 -- ^ Checked out thunk that was unpacked from this pointer
91− deriving (Show, Eq, Ord)
9272
9373-- | A reference to the exact data that a thunk should translate into
9474data ThunkPtr = ThunkPtr
@@ -114,6 +94,11 @@ data ThunkSource
11494 | ThunkSource_Git GitSource
11595 deriving (Show, Eq, Ord)
11696
97+thunkSourceToGitSource :: ThunkSource -> GitSource
98+thunkSourceToGitSource = \case
99+ ThunkSource_GitHub s -> forgetGithub False s
100+ ThunkSource_Git s -> s
101+
117102data GitHubSource = GitHubSource
118103 { _gitHubSource_owner :: Name Owner
119104 , _gitHubSource_repo :: Name Repo
@@ -213,96 +198,117 @@ nixPrefetchGit uri rev fetchSubmodules =
213198
214199--TODO: Pretty print these
215200data ReadThunkError
216− = ReadThunkError_UnrecognizedFiles
217− | ReadThunkError_AmbiguousFiles
218− | ReadThunkError_UnrecognizedLoader Text
219− | ReadThunkError_UnparseablePtr LBS.ByteString
220− deriving (Show)
221−
222−-- | Read a thunk and validate that it is only a thunk, either packed or unpacked.
223−-- If the thunk is packed and additional data is present, fail.
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
201+ = ReadThunkError_UnrecognizedThunk
202+ | ReadThunkError_UnrecognizedPaths (NonEmpty FilePath)
203+ | ReadThunkError_MissingPaths (NonEmpty FilePath)
204+ | ReadThunkError_UnparseablePtr FilePath String
205+ | ReadThunkError_FileError IOError
206+ | ReadThunkError_FileDoesNotMatch FilePath Text
207+ | ReadThunkError_UnrecognizedState String
208+ | ReadThunkError_AmbiguousPackedState ThunkPtr ThunkPtr
209+ deriving (Show)
210+
211+unpackedDirName :: FilePath
212+unpackedDirName = "."
234213
235214attrCacheFileName :: FilePath
236215attrCacheFileName = ".attr-cache"
237216
238−data ThunkType = ThunkType
239− { _thunkType_loader :: FilePath
240− , _thunkType_json :: FilePath
241− , _thunkType_optional :: Set FilePath
242− , _thunkType_loaderVersions :: NonEmpty Text
243− , _thunkType_parser :: Aeson.Object -> Aeson.Parser ThunkPtr
244− }
245−
246−gitHubThunkType :: ThunkType
247−gitHubThunkType = ThunkType
248− { _thunkType_loader = "default.nix"
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
254− }
255−
256−gitThunkType :: ThunkType
257−gitThunkType = ThunkType
258− { _thunkType_loader = "default.nix"
259− , _thunkType_json = "git.json"
260− , _thunkType_optional = Set.fromList [attrCacheFileName]
261− , _thunkType_loaderVersions = plainGitStandaloneLoaders
262− , _thunkType_parser = parseThunkPtr $ fmap ThunkSource_Git . parseGitSource
217+-- | Specification for how a file in a thunk version works.
218+data ThunkFileSpec
219+ = ThunkFileSpec_Ptr (LBS.ByteString -> Either String ThunkPtr) -- ^ This file specifies 'ThunkPtr' data
220+ | ThunkFileSpec_FileMatches Text -- ^ This file must match the given content exactly
221+ | ThunkFileSpec_CheckoutIndicator -- ^ Existence of this directory indicates that the thunk is unpacked
222+ | ThunkFileSpec_AttrCache -- ^ This directory is an attribute cache
223+
224+-- | Specification for how a set of files in a thunk version work.
225+data ThunkSpec = ThunkSpec
226+ { _thunkSpec_name :: !Text
227+ , _thunkSpec_files :: !(Map FilePath ThunkFileSpec)
263228 }
264229
265−thunkTypes :: [ThunkType]
266−thunkTypes = [gitThunkType, gitHubThunkType]
267−
268−findThunkType :: [ThunkType] -> FilePath -> IO (Either ReadThunkError ThunkType)
269−findThunkType types thunkDir = do
270− matches <- fmap catMaybes $ forM types $ \thunkType -> do
271− let
272− expectedContents = Set.fromList $ (thunkDir </>) <$>
273− [ _thunkType_loader thunkType
274− , _thunkType_json thunkType
275− ]
276− optionalContents = Set.map (thunkDir </>) (_thunkType_optional thunkType)
277−
278− -- Ensure that there aren't any other files in the thunk
279− -- NB: System.Directory.listDirectory returns the contents without the directory path
280− files <- liftIO $ Set.fromList . fmap (thunkDir </>) <$> listDirectory thunkDir
281− let unexpectedContents = files `Set.difference` (expectedContents `Set.union` optionalContents)
282− missingContents = expectedContents `Set.difference` files
283− pure $ if Set.null unexpectedContents && Set.null missingContents
284− then Just thunkType
285− else Nothing
286−
287− pure $ case matches of
288− [singleMatch] -> Right singleMatch
289− [] -> Left ReadThunkError_UnrecognizedFiles
290− _ -> Left ReadThunkError_AmbiguousFiles
230+thunkSpecTypes :: NonEmpty (NonEmpty ThunkSpec)
231+thunkSpecTypes = gitThunkSpecs :| [gitHubThunkSpecs]
232+
233+-- | Attempts to match a 'ThunkSpec' to a given directory.
234+matchThunkSpecToDir
235+ :: (MonadError ReadThunkError m, MonadIO m, MonadCatch m)
236+ => ThunkSpec -- ^ 'ThunkSpec' to match against the given files/directory
237+ -> FilePath -- ^ Path to directory
238+ -> Set FilePath -- ^ Set of file paths relative to the given directory
239+ -> m ThunkData
240+matchThunkSpecToDir thunkSpec dir dirFiles = do
241+ case nonEmpty (toList $ dirFiles `Set.difference` expectedPaths) of
242+ Just fs -> throwError $ ReadThunkError_UnrecognizedPaths $ (dir </>) <$> fs
243+ Nothing -> pure ()
244+ case nonEmpty (toList $ requiredPaths `Set.difference` dirFiles) of
245+ Just fs -> throwError $ ReadThunkError_MissingPaths $ (dir </>) <$> fs
246+ Nothing -> pure ()
247+ datas <- fmap toList $ flip Map.traverseMaybeWithKey (_thunkSpec_files thunkSpec) $ \expectedPath -> \case
248+ ThunkFileSpec_AttrCache -> Nothing <$ dirMayExist expectedPath
249+ ThunkFileSpec_CheckoutIndicator -> liftIO (doesDirectoryExist (dir </> expectedPath)) <&> \case
250+ False -> Nothing
251+ True -> Just ThunkData_Checkout
252+ ThunkFileSpec_FileMatches expectedContents -> handle (\(e :: IOError) -> throwError $ ReadThunkError_FileError e) $ do
253+ actualContents <- liftIO (T.readFile $ dir </> expectedPath)
254+ case T.strip expectedContents == T.strip actualContents of
255+ True -> pure Nothing
256+ False -> throwError $ ReadThunkError_FileDoesNotMatch (dir </> expectedPath) expectedContents
257+ ThunkFileSpec_Ptr parser -> handle (\(e :: IOError) -> throwError $ ReadThunkError_FileError e) $ do
258+ let path = dir </> expectedPath
259+ liftIO (doesFileExist path) >>= \case
260+ False -> pure Nothing
261+ True -> do
262+ actualContents <- liftIO $ LBS.readFile path
263+ case parser actualContents of
264+ Right v -> pure $ Just (ThunkData_Packed thunkSpec v)
265+ Left e -> throwError $ ReadThunkError_UnparseablePtr (dir </> expectedPath) e
266+
267+ case nonEmpty datas of
268+ Nothing -> throwError ReadThunkError_UnrecognizedThunk
269+ Just xs -> fold1WithM xs $ \a b -> either throwError pure (mergeThunkData a b)
270+ where
271+ rootPathsOnly = Set.fromList . mapMaybe takeRootDir . Map.keys
272+ takeRootDir = fmap NonEmpty.head . nonEmpty . splitPath
273+
274+ expectedPaths = rootPathsOnly $ _thunkSpec_files thunkSpec
275+
276+ requiredPaths = rootPathsOnly $ Map.filter isRequiredFileSpec $ _thunkSpec_files thunkSpec
277+ isRequiredFileSpec = \case
278+ ThunkFileSpec_FileMatches _ -> True
279+ _ -> False
280+
281+ dirMayExist expectedPath = liftIO (doesFileExist (dir </> expectedPath)) >>= \case
282+ True -> throwError $ ReadThunkError_UnrecognizedPaths $ expectedPath :| []
283+ False -> pure ()
284+
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
291+
292+ bothPackedAndUnpacked = ReadThunkError_UnrecognizedState "Both packed data and checkout present"
293+
294+ fold1WithM (x :| xs) f = foldM f x xs
295+
296+readThunkWith
297+ :: (MonadObelisk m)
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}|]
291307
292308-- | Read a thunk and validate that it is exactly a packed thunk.
293309-- If additional data is present, fail.
294−readPackedThunk :: FilePath -> IO (Either ReadThunkError ThunkPtr)
295−readPackedThunk thunkDir = runExceptT $ do
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
301−
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
310+readThunk :: (MonadObelisk m) => FilePath -> m (Either ReadThunkError ThunkData)
311+readThunk = readThunkWith thunkSpecTypes
306312
307313parseThunkPtr :: (Aeson.Object -> Aeson.Parser ThunkSource) -> Aeson.Object -> Aeson.Parser ThunkPtr
308314parseThunkPtr parseSrc v = do
@@ -346,16 +352,18 @@ parseGitSource v = do
346352overwriteThunk :: MonadObelisk m => FilePath -> ThunkPtr -> m ()
347353overwriteThunk target thunk = do
348354 -- 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}|]
357+ Right _ -> pure ()
350358
351359 --TODO: Is there a safer way to do this overwriting?
352− liftIO $ removeDirectoryRecursive target
353− liftIO $ createThunk target thunk
360+ liftIO $ removePathForcibly target
361+ createThunk target $ Right thunk
354362
355−thunkPtrLoader :: ThunkPtr -> Text
356−thunkPtrLoader thunk = case _thunkPtr_source thunk of
357− ThunkSource_GitHub _ -> NonEmpty.head gitHubStandaloneLoaders
358− ThunkSource_Git _ -> NonEmpty.head plainGitStandaloneLoaders
363+thunkPtrToSpec :: ThunkPtr -> ThunkSpec
364+thunkPtrToSpec thunk = case _thunkPtr_source thunk of
365+ ThunkSource_GitHub _ -> NonEmpty.head gitHubThunkSpecs
366+ ThunkSource_Git _ -> NonEmpty.head gitThunkSpecs
359367
360368-- It's important that formatting be very consistent here, because
361369-- otherwise when people update thunks, their patches will be messy
@@ -402,35 +410,41 @@ encodeThunkPtrData (ThunkPtr rev src) = case src of
402410 , confTrailingNewline = True
403411 }
404412
405−createThunk :: MonadIO m => FilePath -> ThunkPtr -> m ()
406−createThunk target thunk = liftIO $ do
407− createDirectoryIfMissing True (target </> attrCacheFileName)
408− T.writeFile (target </> "default.nix") (thunkPtrLoader thunk)
409− let
410− jsonFileName = case _thunkPtr_source thunk of
411− ThunkSource_GitHub _ -> "github"
412− ThunkSource_Git _ -> "git"
413− LBS.writeFile (target </> jsonFileName <.> "json") (encodeThunkPtrData thunk)
413+createThunk :: MonadObelisk m => FilePath -> Either ThunkSpec ThunkPtr -> m ()
414+createThunk target ptrInfo =
415+ ifor_ (_thunkSpec_files spec) $ \path -> \case
416+ ThunkFileSpec_FileMatches content -> withReadyPath path $ \p -> liftIO $ T.writeFile p content
417+ ThunkFileSpec_Ptr _ -> case ptrInfo of
418+ Left _ -> pure () -- We can't write the ptr without it
419+ Right ptr -> withReadyPath path $ \p -> liftIO $ LBS.writeFile p (encodeThunkPtrData ptr)
420+ _ -> pure ()
421+ where
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
427+ f fullPath
414428
415429createThunkWithLatest :: MonadObelisk m => FilePath -> ThunkSource -> m ()
416430createThunkWithLatest target s = do
417431 rev <- getLatestRev s
418− createThunk target $ ThunkPtr
432+ createThunk target $ Right $ ThunkPtr
419433 { _thunkPtr_source = s
420434 , _thunkPtr_rev = rev
421435 }
422436
423437updateThunkToLatest :: 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
425− checkThunkDirectory "ob thunk update directory cannot be '.'" target
438+updateThunkToLatest (ThunkUpdateConfig mBranch thunkConfig) target = spinner $ do
439+ checkThunkDirectory target
426440 -- check to see if thunk should be updated to a specific branch or just update it's current branch
427441 case mBranch of
428442 Nothing -> do
429443 (overwrite, ptr) <- readThunk target >>= \case
430− Left err -> failWith $ T.pack $ "thunk update: " <> show err
444+ Left err -> failWith [i|Thunk update: ${err}|]
431445 Right c -> case c of
432− ThunkData_Packed t -> return (target, t)
433− ThunkData_Checkout _ -> failWith "cannot update an unpacked thunk"
446+ ThunkData_Packed _ t -> return (target, t)
447+ ThunkData_Checkout -> failWith "cannot update an unpacked thunk"
434448 let src = _thunkPtr_source ptr
435449 rev <- getLatestRev src
436450 overwriteThunk overwrite $ modifyThunkPtrByConfig thunkConfig $ ThunkPtr
@@ -438,14 +452,12 @@ updateThunkToLatest (ThunkUpdateConfig mBranch thunkConfig) target = withSpinner
438452 , _thunkPtr_rev = rev
439453 }
440454 Just branch -> readThunk target >>= \case
441− Left err -> failWith $ T.pack $ "thunk update: " <> show err
455+ Left err -> failWith [i|Thunk update: ${err}|]
442456 Right c -> case c of
443− ThunkData_Packed t -> case _thunkPtr_source t of
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."
457+ ThunkData_Packed _ t -> setThunk thunkConfig target (thunkSourceToGitSource $ _thunkPtr_source t) branch
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.|]
459+ where
460+ spinner = withSpinner' ("Updating thunk " <> T.pack target <> " to latest") (pure $ const $ "Thunk " <> T.pack target <> " updated to latest")
449461
450462setThunk :: MonadObelisk m => ThunkConfig -> FilePath -> GitSource -> String -> m ()
451463setThunk thunkConfig target gs branch = do
@@ -455,21 +467,21 @@ setThunk thunkConfig target gs branch = do
455467
456468-- | All recognized github standalone loaders, ordered from newest to oldest.
457469-- This tool will only ever produce the newest one when it writes a thunk.
458−gitHubStandaloneLoaders :: NonEmpty Text
459−gitHubStandaloneLoaders =
460− gitHubStandaloneLoaderV4 :|
461− [ gitHubStandaloneLoaderV3
462− , gitHubStandaloneLoaderV2
463− , gitHubStandaloneLoaderV1
470+gitHubThunkSpecs :: NonEmpty ThunkSpec
471+gitHubThunkSpecs =
472+ gitHubThunkSpecV5 :|
473+ [ gitHubThunkSpecV4
474+ , gitHubThunkSpecV3
475+ , gitHubThunkSpecV2
476+ , gitHubThunkSpecV1
464477 ]
465478
466−gitHubStandaloneLoaderV1 :: Text
467−gitHubStandaloneLoaderV1 = T.unlines
468− [ "import ((import <nixpkgs> {}).fetchFromGitHub (builtins.fromJSON (builtins.readFile ./github.json)))"
469− ]
479+gitHubThunkSpecV1 :: ThunkSpec
480+gitHubThunkSpecV1 = legacyGitHubThunkSpec "github-v1"
481+ "import ((import <nixpkgs> {}).fetchFromGitHub (builtins.fromJSON (builtins.readFile ./github.json)))"
470482
471−gitHubStandaloneLoaderV2 :: Text
472−gitHubStandaloneLoaderV2 = T.unlines
483+gitHubThunkSpecV2 :: ThunkSpec
484+gitHubThunkSpecV2 = legacyGitHubThunkSpec "github-v2" $ T.unlines
473485 [ "# DO NOT HAND-EDIT THIS FILE" --TODO: Add something about how to get more info on Obelisk, etc.
474486 , "import ((import <nixpkgs> {}).fetchFromGitHub ("
475487 , " let json = builtins.fromJSON (builtins.readFile ./github.json);"
@@ -479,8 +491,8 @@ gitHubStandaloneLoaderV2 = T.unlines
479491 , "))"
480492 ]
481493
482−gitHubStandaloneLoaderV3 :: Text
483−gitHubStandaloneLoaderV3 = T.unlines
494+gitHubThunkSpecV3 :: ThunkSpec
495+gitHubThunkSpecV3 = legacyGitHubThunkSpec "github-v3" $ T.unlines
484496 [ "# DO NOT HAND-EDIT THIS FILE"
485497 , "let"
486498 , " fetch = { private ? false, ... }@args: if private && builtins.hasAttr \"fetchGit\" builtins"
@@ -499,8 +511,8 @@ gitHubStandaloneLoaderV3 = T.unlines
499511 , "in import (fetch (builtins.fromJSON (builtins.readFile ./github.json)))"
500512 ]
501513
502−gitHubStandaloneLoaderV4 :: Text
503−gitHubStandaloneLoaderV4 = T.unlines
514+gitHubThunkSpecV4 :: ThunkSpec
515+gitHubThunkSpecV4 = legacyGitHubThunkSpec "github-v4" $ T.unlines
504516 [ "# DO NOT HAND-EDIT THIS FILE"
505517 , "let fetch = { private ? false, fetchSubmodules ? false, owner, repo, rev, sha256, ... }:"
506518 , " if !fetchSubmodules && !private then builtins.fetchTarball {"
@@ -511,24 +523,50 @@ gitHubStandaloneLoaderV4 = T.unlines
511523 , "in import (fetch (builtins.fromJSON (builtins.readFile ./github.json)))"
512524 ]
513525
514−plainGitStandaloneLoaders :: NonEmpty Text
515−plainGitStandaloneLoaders =
516− plainGitStandaloneLoaderV4 :|
517− [ plainGitStandaloneLoaderV1
518− , plainGitStandaloneLoaderV2
519− , plainGitStandaloneLoaderV3
526+legacyGitHubThunkSpec :: Text -> Text -> ThunkSpec
527+legacyGitHubThunkSpec name loader = ThunkSpec name $ Map.fromList
528+ [ ("default.nix", ThunkFileSpec_FileMatches $ T.strip loader)
529+ , ("github.json" , ThunkFileSpec_Ptr parseGitHubJsonBytes)
530+ , (attrCacheFileName, ThunkFileSpec_AttrCache)
531+ , (".git", ThunkFileSpec_CheckoutIndicator)
520532 ]
521533
522−plainGitStandaloneLoaderV1 :: Text
523−plainGitStandaloneLoaderV1 = T.unlines
534+gitHubThunkSpecV5 :: ThunkSpec
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;
542+ };
543+ json = builtins.fromJSON (builtins.readFile ./github.json);
544+in fetch json
545+|]
546+
547+parseGitHubJsonBytes :: LBS.ByteString -> Either String ThunkPtr
548+parseGitHubJsonBytes = parseJsonObject $ parseThunkPtr $ \v ->
549+ ThunkSource_GitHub <$> parseGitHubSource v <|> ThunkSource_Git <$> parseGitSource v
550+
551+gitThunkSpecs :: NonEmpty ThunkSpec
552+gitThunkSpecs =
553+ gitThunkSpecV5 :|
554+ [ gitThunkSpecV4
555+ , gitThunkSpecV3
556+ , gitThunkSpecV2
557+ , gitThunkSpecV1
558+ ]
559+
560+gitThunkSpecV1 :: ThunkSpec
561+gitThunkSpecV1 = legacyGitThunkSpec "git-v1" $ T.unlines
524562 [ "# DO NOT HAND-EDIT THIS FILE"
525563 , "let fetchGit = {url, rev, ref ? null, branch ? null, sha256 ? null, fetchSubmodules ? null}:"
526564 , " assert !fetchSubmodules; (import <nixpkgs> {}).fetchgit { inherit url rev sha256; };"
527565 , "in import (fetchGit (builtins.fromJSON (builtins.readFile ./git.json)))"
528566 ]
529567
530−plainGitStandaloneLoaderV2 :: Text
531−plainGitStandaloneLoaderV2 = T.unlines
568+gitThunkSpecV2 :: ThunkSpec
569+gitThunkSpecV2 = legacyGitThunkSpec "git-v2" $ T.unlines
532570 [ "# DO NOT HAND-EDIT THIS FILE"
533571 , "let fetchGit = {url, rev, ref ? null, branch ? null, sha256 ? null, fetchSubmodules ? null}:"
534572 , " if builtins.hasAttr \"fetchGit\" builtins"
@@ -539,8 +577,8 @@ plainGitStandaloneLoaderV2 = T.unlines
539577
540578-- This loader has a bug because @builtins.fetchGit@ is not given a @ref@
541579-- and will fail to find commits without this because it does shallow clones.
542−plainGitStandaloneLoaderV3 :: Text
543−plainGitStandaloneLoaderV3 = T.unlines
580+gitThunkSpecV3 :: ThunkSpec
581+gitThunkSpecV3 = legacyGitThunkSpec "git-v3" $ T.unlines
544582 [ "# DO NOT HAND-EDIT THIS FILE"
545583 , "let fetch = {url, rev, ref ? null, sha256 ? null, fetchSubmodules ? false, private ? false, ...}:"
546584 , " let realUrl = let firstChar = builtins.substring 0 1 url; in"
@@ -555,8 +593,8 @@ plainGitStandaloneLoaderV3 = T.unlines
555593 , "in import (fetch (builtins.fromJSON (builtins.readFile ./git.json)))"
556594 ]
557595
558−plainGitStandaloneLoaderV4 :: Text
559−plainGitStandaloneLoaderV4 = T.unlines
596+gitThunkSpecV4 :: ThunkSpec
597+gitThunkSpecV4 = legacyGitThunkSpec "git-v4" $ T.unlines
560598 [ "# DO NOT HAND-EDIT THIS FILE"
561599 , "let fetch = {url, rev, branch ? null, sha256 ? null, fetchSubmodules ? false, private ? false, ...}:"
562600 , " let realUrl = let firstChar = builtins.substring 0 1 url; in"
@@ -572,10 +610,52 @@ plainGitStandaloneLoaderV4 = T.unlines
572610 , "in import (fetch (builtins.fromJSON (builtins.readFile ./git.json)))"
573611 ]
574612
575−thunkFileNames :: [FilePath]
576−thunkFileNames = ["default.nix", "github.json", "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)
619+ ]
620+
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
628+ else 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;
634+ };
635+ json = builtins.fromJSON (builtins.readFile ./git.json);
636+in fetch json
637+|]
638+
639+parseGitJsonBytes :: LBS.ByteString -> Either String ThunkPtr
640+parseGitJsonBytes = parseJsonObject $ parseThunkPtr $ fmap ThunkSource_Git . parseGitSource
641+
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)
649+ ]
650+ where
651+ defaultNixViaSrc = [here|
652+# DO NOT HAND-EDIT THIS FILE
653+import (import ./thunk.nix)
654+|]
577655
578−--TODO: when checking something out, make a shallow clone
656+
657+parseJsonObject :: (Aeson.Object -> Aeson.Parser a) -> LBS.ByteString -> Either String a
658+parseJsonObject p bytes = Aeson.parseEither p =<< Aeson.eitherDecode bytes
579659
580660-- | Checks a cache directory to see if there is a fresh symlink
581661-- to the result of building an attribute of a thunk.
@@ -583,44 +663,49 @@ thunkFileNames = ["default.nix", "github.json", "git.json"]
583663-- and the result is symlinked into the cache.
584664nixBuildThunkAttrWithCache
585665 :: MonadObelisk m
586− => FilePath
666+ => ThunkSpec
667+ -> FilePath
587668 -- ^ Path to directory containing Thunk
588669 -> String
589670 -- ^ Attribute to build
590− -> m FilePath
671+ -> m (Maybe FilePath)
591672 -- ^ Symlink to cached or built nix output
592673-- WARNING: If the thunk uses an impure reference such as '<nixpkgs>'
593674-- the caching mechanism will fail as it merely measures the modification
594675-- time of the cache link and the expression to build.
595−nixBuildThunkAttrWithCache thunkDir attr = do
596− --NB: Expects thunkDir to be normalised with no trailing path separator.
597− --This should be guaranteed by the command argument parser.
598− let cacheErrHandler e
599− | isDoesNotExistError e = return Nothing -- expected from a cache miss
600− | otherwise = putLog Error (T.pack $ displayException e) >> return Nothing
601− cacheDir = thunkDir </> attrCacheFileName
602− cachePath = cacheDir </> attr <.> "out"
676+nixBuildThunkAttrWithCache thunkSpec thunkDir attr = do
603677 latestChange <- liftIO $ do
604− createDirectoryIfMissing False cacheDir
605− let getModificationTimeMaybe = fmap rightToMaybe . try @IOError . getModificationTime
606− maximum . catMaybes <$> mapM (getModificationTimeMaybe . (thunkDir </>)) thunkFileNames
607− cacheHit <- handle cacheErrHandler $ do
608− cacheTime <- liftIO $ posixSecondsToUTCTime . realToFrac . modificationTime <$> getSymbolicLinkStatus cachePath
609− return $ if latestChange <= cacheTime
610− then Just cachePath
611− else Nothing
612− case cacheHit of
613− Just c -> return c
614− Nothing -> do
615− putLog Warning $ T.pack $ mconcat [thunkDir, ": ", attr, " not cached, building ..."]
616− _ <- nixCmd $ NixCmd_Build $ def
617− Lens.& nixBuildConfig_outLink Lens..~ OutLink_IndirectRoot cachePath
618− Lens.& nixCmdConfig_target Lens..~ Target
619− { _target_path = Just thunkDir
620− , _target_attr = Just attr
621− , _target_expr = Nothing
622− }
623− return cachePath
678+ let
679+ getModificationTimeMaybe = fmap rightToMaybe . try @IOError . getModificationTime
680+ thunkFileNames = Map.keys $ _thunkSpec_files thunkSpec
681+ maximum . catMaybes <$> traverse (getModificationTimeMaybe . (thunkDir </>)) thunkFileNames
682+
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
687+ let
688+ cachePath = thunkDir </> cacheDir </> attr <.> "out"
689+ cacheErrHandler e
690+ | isDoesNotExistError e = pure Nothing -- expected from a cache miss
691+ | otherwise = Nothing <$ putLog Error (T.pack $ displayException e)
692+ cacheHit <- handle cacheErrHandler $ do
693+ cacheTime <- liftIO $ posixSecondsToUTCTime . realToFrac . modificationTime <$> getSymbolicLinkStatus cachePath
694+ pure $ if latestChange <= cacheTime
695+ then Just cachePath
696+ else Nothing
697+ case cacheHit of
698+ Just c -> pure c
699+ Nothing -> do
700+ putLog Warning $ T.pack $ mconcat [thunkDir, ": ", attr, " not cached, building ..."]
701+ liftIO $ createDirectoryIfMissing True (takeDirectory cachePath)
702+ (cachePath <$) $ nixCmd $ NixCmd_Build $ def
703+ & nixBuildConfig_outLink .~ OutLink_IndirectRoot cachePath
704+ & nixCmdConfig_target .~ Target
705+ { _target_path = Just thunkDir
706+ , _target_attr = Just attr
707+ , _target_expr = Nothing
708+ }
624709
625710-- | Build a nix attribute, and cache the result if possible
626711nixBuildAttrWithCache
@@ -631,13 +716,15 @@ nixBuildAttrWithCache
631716 -- ^ Attribute to build
632717 -> m FilePath
633718 -- ^ Symlink to cached or built nix output
634−nixBuildAttrWithCache exprPath attr = do
635− readThunk exprPath >>= \case
636− -- Only packed thunks are cached. in particular, checkouts are not
637− Right (ThunkData_Packed _) -> nixBuildThunkAttrWithCache exprPath attr
638− _ -> nixCmd $ NixCmd_Build $ def
639− Lens.& nixBuildConfig_outLink Lens..~ OutLink_None
640− Lens.& nixCmdConfig_target Lens..~ Target
719+nixBuildAttrWithCache exprPath attr = readThunk exprPath >>= \case
720+ -- Only packed thunks are cached. In particular, checkouts are not.
721+ Right (ThunkData_Packed spec _) ->
722+ maybe build pure =<< nixBuildThunkAttrWithCache spec exprPath attr
723+ _ -> build
724+ where
725+ build = nixCmd $ NixCmd_Build $ def
726+ & nixBuildConfig_outLink .~ OutLink_None
727+ & nixCmdConfig_target .~ Target
641728 { _target_path = Just exprPath
642729 , _target_attr = Just attr
643730 , _target_expr = Nothing
@@ -658,7 +745,7 @@ updateThunk p f = withSystemTempDirectory "obelisk-thunkptr-" $ \tmpDir -> do
658745 where
659746 copyThunkToTmp tmpDir thunkDir = readThunk thunkDir >>= \case
660747 Left err -> failWith $ "withThunkUnpacked: " <> T.pack (show err)
661− Right (ThunkData_Packed _) -> do
748+ Right ThunkData_Packed{} -> do
662749 let tmpThunk = tmpDir </> "thunk"
663750 callProcessAndLogOutput (Notice, Error) $
664751 proc cp ["-r", "-T", thunkDir, tmpThunk]
@@ -672,62 +759,81 @@ updateThunk p f = withSystemTempDirectory "obelisk-thunkptr-" $ \tmpDir -> do
672759finalMsg :: Bool -> (a -> Text) -> Maybe (a -> Text)
673760finalMsg noTrail s = if noTrail then Nothing else Just s
674761
675−unpackThunk :: MonadObelisk m => FilePath -> m ()
676−unpackThunk = unpackThunk' False
677−
678762-- | Check that we are not somewhere inside the thunk directory
679−checkThunkDirectory :: MonadObelisk m => Text -> FilePath -> m ()
680−checkThunkDirectory msg thunkDir = do
763+checkThunkDirectory :: MonadObelisk m => FilePath -> m ()
764+checkThunkDirectory thunkDir = do
681765 currentDir <- liftIO getCurrentDirectory
682766 thunkDir' <- liftIO $ canonicalizePath thunkDir
683− 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}|]
769+
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|]
774+ Left _ -> pure ()
775+
776+unpackThunk :: MonadObelisk m => FilePath -> m ()
777+unpackThunk = unpackThunk' False
684778
685779unpackThunk' :: MonadObelisk m => Bool -> FilePath -> m ()
686−unpackThunk' noTrail thunkDir = checkThunkDirectory "Can't pack/unpack from within the thunk directory" thunkDir >> readThunk thunkDir >>= \case
687− Left err -> failWith $ "thunk unpack: " <> T.pack (show err)
780+unpackThunk' noTrail thunkDir = checkThunkDirectory thunkDir *> readThunk thunkDir >>= \case
781+ Left err -> failWith [i|Invalid thunk at ${thunkDir}: ${err}|]
688782 --TODO: Overwrite option that rechecks out thunk; force option to do so even if working directory is dirty
689− Right (ThunkData_Checkout _) -> failWith "thunk unpack: thunk is already unpacked"
690− Right (ThunkData_Packed tptr) -> do
783+ Right ThunkData_Checkout -> failWith [i|Thunk at ${thunkDir} is already unpacked|]
784+ Right (ThunkData_Packed _ tptr) -> do
691785 let (thunkParent, thunkName) = splitFileName thunkDir
692− withTempDirectory thunkParent thunkName $ \tmpRepo -> do
693− let obGitDir = tmpRepo </> ".git" </> "obelisk"
694− s = case _thunkPtr_source tptr of
695− ThunkSource_GitHub s' -> forgetGithub False s'
696− ThunkSource_Git s' -> s'
786+ withTempDirectory thunkParent thunkName $ \tmpThunk -> do
787+ let
788+ gitSrc = thunkSourceToGitSource $ _thunkPtr_source tptr
789+ newSpec = case _thunkPtr_source tptr of
790+ ThunkSource_GitHub _ -> NonEmpty.head gitHubThunkSpecs
791+ ThunkSource_Git _ -> NonEmpty.head gitThunkSpecs
697792 withSpinner' ("Fetching thunk " <> T.pack thunkName)
698793 (finalMsg noTrail $ const $ "Fetched thunk " <> T.pack thunkName) $ do
699− let git = callProcessAndLogOutput (Notice, Notice) . gitProc tmpRepo
700− git $ [ "clone" ]
701− ++ ("--recursive" <$ guard (_gitSource_fetchSubmodules s))
702− ++ [ T.unpack $ gitUriToText $ _gitSource_url s ]
703− ++ do branch <- maybeToList $ _gitSource_branch s
704− [ "--branch", T.unpack $ untagName branch ]
705− git ["reset", "--hard", Ref.toHexString $ _thunkRev_commit $ _thunkPtr_rev tptr]
706− when (_gitSource_fetchSubmodules s) $
707− git ["submodule", "update", "--recursive", "--init"]
708−
709− liftIO $ createDirectory obGitDir
710− callProcessAndLogOutput (Notice, Error) $
711− proc cp ["-r", "-T", thunkDir </> ".", obGitDir </> "orig-thunk"]
712− callProcessAndLogOutput (Notice, Error) $
713− proc "rm" ["-r", thunkDir]
714− callProcessAndLogOutput (Notice, Error) $
715− proc "mv" ["-T", tmpRepo, thunkDir]
794+ let unpackedPath = tmpThunk </> unpackedDirName
795+ gitCloneForThunkUnpack gitSrc (_thunkRev_commit $ _thunkPtr_rev tptr) unpackedPath
796+
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
800+
801+ liftIO $ do
802+ removePathForcibly thunkDir
803+ renameDirectory tmpThunk thunkDir
804+
805+gitCloneForThunkUnpack
806+ :: MonadObelisk m
807+ => GitSource -- ^ Git source to use
808+ -> Ref hash -- ^ Commit hash to reset to
809+ -> FilePath -- ^ Directory to clone into
810+ -> m ()
811+gitCloneForThunkUnpack gitSrc commit dir = do
812+ let git = callProcessAndLogOutput (Notice, Notice) . gitProc dir
813+ git $ [ "clone" ]
814+ ++ ["--recursive" | _gitSource_fetchSubmodules gitSrc]
815+ ++ [ T.unpack $ gitUriToText $ _gitSource_url gitSrc ]
816+ ++ do branch <- maybeToList $ _gitSource_branch gitSrc
817+ [ "--branch", T.unpack $ untagName branch ]
818+ git ["reset", "--hard", Ref.toHexString commit]
819+ when (_gitSource_fetchSubmodules gitSrc) $
820+ git ["submodule", "update", "--recursive", "--init"]
716821
717822--TODO: add a rollback mode to pack to the original thunk
718823packThunk :: MonadObelisk m => ThunkPackConfig -> FilePath -> m ThunkPtr
719824packThunk = packThunk' False
720825
721826packThunk' :: MonadObelisk m => Bool -> ThunkPackConfig -> FilePath -> m ThunkPtr
722−packThunk' noTrail (ThunkPackConfig force thunkConfig) thunkDir = checkThunkDirectory "Can't pack/unpack from within the thunk directory" thunkDir >> readThunk thunkDir >>= \case
723− Left err -> failWith $ T.pack $ "thunk pack: " <> show err
724− Right (ThunkData_Packed _) -> failWith "pack: thunk is already packed"
725− Right (ThunkData_Checkout _) -> do
726− withSpinner' ("Packing thunk " <> T.pack thunkDir)
727− (finalMsg noTrail $ const $ "Packed thunk " <> T.pack thunkDir) $ do
728− thunkPtr <- modifyThunkPtrByConfig thunkConfig <$> getThunkPtr (not force) thunkDir (_thunkConfig_private thunkConfig)
729− callProcessAndLogOutput (Debug, Error) $ proc "rm" ["-rf", thunkDir]
730− liftIO $ createThunk thunkDir thunkPtr
827+packThunk' noTrail (ThunkPackConfig force thunkConfig) thunkDir = checkThunkDirectory thunkDir *> readThunk thunkDir >>= \case
828+ Right ThunkData_Packed{} -> failWith [i|Thunk at ${thunkDir} is is already packed|]
829+ _ -> withSpinner'
830+ ("Packing thunk " <> T.pack thunkDir)
831+ (finalMsg noTrail $ const $ "Packed thunk " <> T.pack thunkDir) $
832+ do
833+ let checkClean = if force then CheckClean_NoCheck else CheckClean_FullCheck
834+ thunkPtr <- modifyThunkPtrByConfig thunkConfig <$> getThunkPtr checkClean thunkDir (_thunkConfig_private thunkConfig)
835+ liftIO $ removePathForcibly thunkDir
836+ createThunk thunkDir $ Right thunkPtr
731837 pure thunkPtr
732838
733839modifyThunkPtrByConfig :: ThunkConfig -> ThunkPtr -> ThunkPtr
@@ -738,29 +844,43 @@ modifyThunkPtrByConfig (ThunkConfig markPrivate') ptr = case markPrivate' of
738844 ThunkSource_GitHub s -> ThunkSource_GitHub $ s { _gitHubSource_private = markPrivate }
739845 }
740846
741−getThunkPtr :: forall m. MonadObelisk m => Bool -> FilePath -> Maybe Bool -> m ThunkPtr
742−getThunkPtr checkClean thunkDir mPrivate = do
743− when checkClean $ ensureCleanGitRepo thunkDir True
847+data CheckClean
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
854+
855+getThunkPtr :: forall m. MonadObelisk m => CheckClean -> FilePath -> Maybe Bool -> m ThunkPtr
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
863+
864+ let (checkClean, checkIgnored) = case gitCheckClean of
865+ CheckClean_FullCheck -> (True, True)
866+ CheckClean_NotIgnored -> (True, False)
867+ CheckClean_NoCheck -> (False, False)
868+ when checkClean $ ensureCleanGitRepo thunkDir checkIgnored
744869 "thunk pack: thunk checkout contains unsaved modifications"
745870
746871 -- Check whether there are any stashes
747− stashOutput <- readGitProcess thunkDir ["stash", "list"]
748− when checkClean $ case T.null stashOutput of
749− False -> do
872+ when checkClean $ do
873+ stashOutput <- readGitProcess thunkDir ["stash", "list"]
874+ unless (T.null stashOutput) $
750875 failWith $ T.unlines $
751876 [ "thunk pack: thunk checkout has stashes"
752877 , "git stash list:"
753878 ] ++ T.lines stashOutput
754− True -> return ()
755879
756880 -- Get current branch
757881 (mCurrentBranch, mCurrentCommit) <- do
758− b <- listToMaybe
759− <$> T.lines
760− <$> readGitProcess thunkDir ["rev-parse", "--abbrev-ref", "HEAD"]
761− c <- listToMaybe
762− <$> T.lines
763− <$> readGitProcess thunkDir ["rev-parse", "HEAD"]
882+ b <- listToMaybe . T.lines <$> readGitProcess thunkDir ["rev-parse", "--abbrev-ref", "HEAD"]
883+ c <- listToMaybe . T.lines <$> readGitProcess thunkDir ["rev-parse", "HEAD"]
764884 case b of
765885 (Just "HEAD") -> failWith $ T.unlines
766886 [ "thunk pack: You are in 'detached HEAD' state."
@@ -771,7 +891,7 @@ getThunkPtr checkClean thunkDir mPrivate = do
771891
772892 -- Get information on all branches and their (optional) designated upstream
773893 -- correspondents
774− (headDump :: [Text]) <- T.lines <$> readGitProcess thunkDir
894+ headDump :: [Text] <- T.lines <$> readGitProcess thunkDir
775895 [ "for-each-ref"
776896 , "--format=%(refname:short) %(upstream:short) %(upstream:remotename)"
777897 , "refs/heads/"
@@ -817,7 +937,7 @@ getThunkPtr checkClean thunkDir mPrivate = do
817937 ]
818938
819939 -- loosely by https://stackoverflow.com/questions/7773939/show-git-ahead-and-behind-info-for-all-branches-including-remotes
820− stats <- iforM headUpstream $ \branch (upstream, _remote) -> do
940+ stats <- ifor headUpstream $ \branch (upstream, _remote) -> do
821941 (stat :: [Text]) <- T.lines <$> readGitProcess thunkDir
822942 [ "rev-list", "--left-right"
823943 , T.unpack branch <> "..." <> T.unpack upstream
@@ -841,8 +961,9 @@ getThunkPtr checkClean thunkDir mPrivate = do
841961 \pushed but this repo's remote tracking branches don't know it.)"
842962 ]
843963
844− -- We assume it's safe to pack the thunk at this point
845− putLog Informational "All changes safe in git remotes. OK to pack thunk."
964+ when checkClean $ do
965+ -- We assume it's safe to pack the thunk at this point
966+ putLog Informational "All changes safe in git remotes. OK to pack thunk."
846967
847968 let remote = maybe "origin" snd $ flip Map.lookup headUpstream =<< mCurrentBranch
848969
@@ -860,9 +981,7 @@ getThunkPtr checkClean thunkDir mPrivate = do
860981-- | Get the latest revision available from the given source
861982getLatestRev :: MonadObelisk m => ThunkSource -> m ThunkRev
862983getLatestRev os = do
863− let gitS = case os of
864− ThunkSource_GitHub s -> forgetGithub False s
865− ThunkSource_Git s -> s
984+ let gitS = thunkSourceToGitSource os
866985 (_, commit) <- gitGetCommitBranch (_gitSource_url gitS) (untagName <$> _gitSource_branch gitS)
867986 case os of
868987 ThunkSource_GitHub s -> githubThunkRev s commit