@@ -1,74 +1,75 @@
1{-# LANGUAGE DataKinds #-}
1{-# LANGUAGE DataKinds #-}
2−{-# LANGUAGE FlexibleContexts #-}
3{-# LANGUAGE LambdaCase #-}
2{-# LANGUAGE LambdaCase #-}
4−{-# LANGUAGE MultiParamTypeClasses #-}
5{-# LANGUAGE MultiWayIf #-}
3{-# LANGUAGE MultiWayIf #-}
6{-# LANGUAGE OverloadedStrings #-}
4{-# LANGUAGE OverloadedStrings #-}
7{-# LANGUAGE PatternGuards #-}
5{-# LANGUAGE PatternGuards #-}
8−{-# LANGUAGE QuasiQuotes #-}
6+{-# LANGUAGE TemplateHaskell #-}
9−{-# LANGUAGE ScopedTypeVariables #-}
7+
10−{-# LANGUAGE TypeApplications #-}
11−module Obelisk.Command.Thunk where
8+module Obelisk.Command.Thunk
15+ , updateThunkToLatest
16+ , createThunkWithLatest
17+ , nixBuildAttrWithCache
18+ , nixBuildThunkAttrWithCache
13import Control.Applicative
24import Control.Applicative
14−import Control.Exception (displayException, try)
25+import Control.Exception
15−import Control.Lens (ifor, ifor_, (.~))
16import Control.Monad
26import Control.Monad
17−import Control.Monad.Extra (findM)
18−import Control.Monad.Catch (MonadCatch, handle)
19import Control.Monad.Except
27import Control.Monad.Except
20−import Data.Aeson ((.=))
28+import Data.Aeson as Aeson
21−import qualified Data.Aeson as Aeson
22import Data.Aeson.Encode.Pretty
29import Data.Aeson.Encode.Pretty
23−import qualified Data.Aeson.Types as Aeson
24−import Data.Bifunctor (first)
25import qualified Data.ByteString.Lazy as LBS
30import qualified Data.ByteString.Lazy as LBS
26−import Data.Containers.ListUtils (nubOrd)
27import Data.Default
31import Data.Default
28−import Data.Either.Combinators (fromRight', rightToMaybe)
32+import Data.Foldable
29−import Data.Foldable (toList)
30−import Data.Function ((&))
31−import Data.Functor ((<&>))
32import Data.Git.Ref (Ref)
33import Data.Git.Ref (Ref)
33import qualified Data.Git.Ref as Ref
34import qualified Data.Git.Ref as Ref
34import qualified Data.List as L
35import qualified Data.List as L
35−import Data.List.NonEmpty (NonEmpty (..), nonEmpty)
36+import Data.List.NonEmpty (NonEmpty (..))
36import qualified Data.List.NonEmpty as NonEmpty
37import qualified Data.List.NonEmpty as NonEmpty
38import qualified Data.Map as Map
38import qualified Data.Map as Map
39import Data.Maybe
39import Data.Maybe
40import Data.Set (Set)
41import Data.Set (Set)
41import qualified Data.Set as Set
42import qualified Data.Set as Set
42−import Data.String.Here.Interpolated (i)
43−import Data.String.Here.Uninterpolated (here)
44import Data.Text (Text)
43import Data.Text (Text)
45import qualified Data.Text as T
44import qualified Data.Text as T
46−import Data.Text.Encoding
47import qualified Data.Text.IO as T
45import qualified Data.Text.IO as T
46+import Data.Text.Encoding
48import Data.Time.Clock.POSIX (posixSecondsToUTCTime)
47import Data.Time.Clock.POSIX (posixSecondsToUTCTime)
49−import Data.Traversable (for)
50−import Data.Yaml (parseMaybe)
48+import Data.Yaml (parseMaybe, (.:))
49+import qualified Data.Yaml as Yaml
51import GitHub
50import GitHub
51+import GitHub.Endpoints.Repos.Contents (archiveForR)
52import GitHub.Data.Name
52import GitHub.Data.Name
53import Obelisk.Command.Nix
54import Obelisk.Command.Nix
54import System.Directory
55import System.Directory
55import System.Exit
56import System.Exit
56import System.FilePath
57import System.FilePath
57import System.IO.Error
59import System.IO.Error
58import System.IO.Temp
60import System.IO.Temp
59−import System.PosixCompat.Files (getSymbolicLinkStatus, modificationTime)
61+import System.Posix (modificationTime, getSymbolicLinkStatus)
60−import qualified Text.URI as URI
62+import System.Process
62−import Obelisk.App (MonadObelisk)
64+import Development.Placeholders
64−import Obelisk.Command.Utils
66--TODO: Support symlinked thunk data
66--TODO: Support symlinked thunk data
67data ThunkData
67data ThunkData
68− = ThunkData_Packed ThunkSpec ThunkPtr
68+ = ThunkData_Packed ThunkPtr
69 -- ^ Packed thunk
69 -- ^ Packed thunk
70− | ThunkData_Checkout
70+ | ThunkData_Checkout (Maybe ThunkPtr)
71 -- ^ Checked out thunk that was unpacked from this pointer
71 -- ^ Checked out thunk that was unpacked from this pointer
72+ deriving (Show, Eq, Ord)
73-- | A reference to the exact data that a thunk should translate into
74-- | A reference to the exact data that a thunk should translate into
74data ThunkPtr = ThunkPtr
75data ThunkPtr = ThunkPtr
@@ -81,7 +82,7 @@ type NixSha256 = Text --TODO: Use a smart constructor and make this actually ver
82-- | A specific revision of data; it may be available from multiple sources
83-- | A specific revision of data; it may be available from multiple sources
83data ThunkRev = ThunkRev
84data ThunkRev = ThunkRev
84− { _thunkRev_commit :: Ref Ref.SHA1
85+ { _thunkRev_commit :: Ref
85 , _thunkRev_nixSha256 :: NixSha256
86 , _thunkRev_nixSha256 :: NixSha256
87 deriving (Show, Eq, Ord)
88 deriving (Show, Eq, Ord)
@@ -94,11 +95,6 @@ data ThunkSource
94 | ThunkSource_Git GitSource
95 | ThunkSource_Git GitSource
95 deriving (Show, Eq, Ord)
96 deriving (Show, Eq, Ord)
97−thunkSourceToGitSource :: ThunkSource -> GitSource
98−thunkSourceToGitSource = \case
99− ThunkSource_GitHub s -> forgetGithub False s
100− ThunkSource_Git s -> s
102data GitHubSource = GitHubSource
98data GitHubSource = GitHubSource
103 { _gitHubSource_owner :: Name Owner
99 { _gitHubSource_owner :: Name Owner
104 , _gitHubSource_repo :: Name Repo
100 , _gitHubSource_repo :: Name Repo
@@ -107,263 +103,157 @@ data GitHubSource = GitHubSource
108 deriving (Show, Eq, Ord)
104 deriving (Show, Eq, Ord)
110−newtype GitUri = GitUri { unGitUri :: URI.URI } deriving (Eq, Ord, Show)
112−gitUriToText :: GitUri -> Text
113−gitUriToText (GitUri uri)
114− | (T.toLower . URI.unRText <$> URI.uriScheme uri) == Just "file"
115− , Just (_, path) <- URI.uriPath uri
116− = "/" <> T.intercalate "/" (map URI.unRText $ NonEmpty.toList path)
117− | otherwise = URI.render uri
119data GitSource = GitSource
106data GitSource = GitSource
120− { _gitSource_url :: GitUri
107+ { _gitSource_url :: URI
108+ --TODO: Is it ok to use the types from the GitHub api bindings?
121 , _gitSource_branch :: Maybe (Name Branch)
109 , _gitSource_branch :: Maybe (Name Branch)
122 , _gitSource_fetchSubmodules :: Bool
110 , _gitSource_fetchSubmodules :: Bool
123− , _gitSource_private :: Bool
125 deriving (Show, Eq, Ord)
112 deriving (Show, Eq, Ord)
127−newtype ThunkConfig = ThunkConfig
128− { _thunkConfig_private :: Maybe Bool
131−data ThunkUpdateConfig = ThunkUpdateConfig
132− { _thunkUpdateConfig_branch :: Maybe String
133− , _thunkUpdateConfig_config :: ThunkConfig
136−data ThunkPackConfig = ThunkPackConfig
137− { _thunkPackConfig_force :: Bool
138− , _thunkPackConfig_config :: ThunkConfig
141−-- | Convert a GitHub source to a regular Git source. Assumes no submodules.
142−forgetGithub :: Bool -> GitHubSource -> GitSource
143−forgetGithub useSsh s = GitSource
144− { _gitSource_url = GitUri $ URI.URI
145− { URI.uriScheme = Just $ fromRight' $ URI.mkScheme $ if useSsh then "ssh" else "https"
146− , URI.uriAuthority = Right $ URI.Authority
147− { URI.authUserInfo = URI.UserInfo (fromRight' $ URI.mkUsername "git") Nothing
149− , URI.authHost = fromRight' $ URI.mkHost "github.com"
150− , URI.authPort = Nothing
152− , URI.uriPath = Just ( False
153− , fromRight' . URI.mkPathPiece <$>
154− untagName (_gitHubSource_owner s)
155− :| [ untagName (_gitHubSource_repo s) <> ".git" ]
158− , URI.uriFragment = Nothing
160− , _gitSource_branch = _gitHubSource_branch s
161− , _gitSource_fetchSubmodules = False
162− , _gitSource_private = _gitHubSource_private s
165−getThunkGitBranch :: ThunkPtr -> Maybe Text
166−getThunkGitBranch (ThunkPtr _ src) = fmap untagName $ case src of
167− ThunkSource_GitHub s -> _gitHubSource_branch s
168− ThunkSource_Git s -> _gitSource_branch s
170−commitNameToRef :: Name Commit -> Ref Ref.SHA1
114+commitNameToRef :: Name Commit -> Ref
171commitNameToRef (N c) = Ref.fromHex $ encodeUtf8 c
115commitNameToRef (N c) = Ref.fromHex $ encodeUtf8 c
173−-- TODO: Use spinner here.
117+getNixSha256ForUriUnpacked :: URI -> IO NixSha256
174−getNixSha256ForUriUnpacked
118+getNixSha256ForUriUnpacked uri = do
175− :: MonadObelisk m
119+ (_, out, err, p) <- runInteractiveProcess "nix-prefetch-url" --TODO: Make this package depend on nix-prefetch-url properly
176− => GitUri
120+ [ "--unpack"
177− -> m NixSha256
121+ , "--type"
178−getNixSha256ForUriUnpacked uri =
122+ , "sha256"
179− withExitFailMessage ("nix-prefetch-url: Failed to determine sha256 hash of URL " <> gitUriToText uri) $ do
123+ , show uri
180− [hash] <- fmap T.lines $ readProcessAndLogOutput (Debug, Debug) $
124+ ] Nothing Nothing
181− proc nixPrefetchUrlPath ["--unpack", "--type", "sha256", T.unpack $ gitUriToText uri]
125+ --TODO: Deal with errors here; usually they're HTTP errors
182− pure hash
126+ waitForProcess p >>= \case
183−
127+ ExitSuccess -> return ()
184−nixPrefetchGit :: MonadObelisk m => GitUri -> Text -> Bool -> m NixSha256
128+ _ -> do
185−nixPrefetchGit uri rev fetchSubmodules =
129+ hPutStrLn stdout =<< hGetContents out
186− withExitFailMessage ("nix-prefetch-git: Failed to determine sha256 hash of Git repo " <> gitUriToText uri <> " at " <> rev) $ do
130+ hPutStrLn stderr =<< hGetContents err
187− out <- readProcessAndLogStderr Debug $
131+ --TODO: actual error
188− proc nixPrefetchGitPath $ filter (/="")
132+ fail $ "nix-prefetch-url"
189− [ "--url", T.unpack $ gitUriToText uri
133+ T.strip <$> T.hGetContents out
190− , "--rev", T.unpack rev
191− , if fetchSubmodules then "--fetch-submodules" else ""
195− case parseMaybe (Aeson..: "sha256") =<< Aeson.decodeStrict (encodeUtf8 out) of
135+-- | Get the latest revision available from the given source
196− Nothing -> failWith $ "nix-prefetch-git: unrecognized output " <> out
136+getLatestRev :: ThunkSource -> IO ThunkRev
197− Just x -> pure x
137+getLatestRev = \case
138+ ThunkSource_GitHub s -> do
139+ auth <- getHubAuth "github.com"
140+ commitsResult <- executeRequestMaybe auth $ commitsWithOptionsForR
141+ (_gitHubSource_owner s)
142+ (_gitHubSource_repo s)
144+ $ case _gitHubSource_branch s of
146+ Just b -> [CommitQuerySha $ untagName b]
147+ commitInfos <- either throwIO return commitsResult
148+ commitInfo : _ <- return $ toList commitInfos
149+ let commit = commitSha commitInfo
150+ Right archiveUri <- executeRequestMaybe auth $ archiveForR (_gitHubSource_owner s) (_gitHubSource_repo s) ArchiveFormatTarball $ Just $ untagName commit
151+ nixSha256 <- getNixSha256ForUriUnpacked archiveUri
153+ { _thunkRev_commit = commitNameToRef commit
154+ , _thunkRev_nixSha256 = nixSha256
156+ ThunkSource_Git _s -> do
199--TODO: Pretty print these
159--TODO: Pretty print these
200data ReadThunkError
160data ReadThunkError
201− = ReadThunkError_UnrecognizedThunk
161+ = ReadThunkError_WrongContents (Set String) (Set String)
202− | ReadThunkError_UnrecognizedPaths (NonEmpty FilePath)
162+ | ReadThunkError_UnrecognizedLoader Text
203− | ReadThunkError_MissingPaths (NonEmpty FilePath)
163+ | 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
209− deriving (Show)
164+ deriving (Show)
211−unpackedDirName :: FilePath
166+-- | Read a thunk and validate that it is only a thunk, either packed or unpacked.
212−unpackedDirName = "."
167+-- If the thunk is packed and additional data is present, fail.
214−attrCacheFileName :: FilePath
215−attrCacheFileName = ".attr-cache"
217−-- | Specification for how a file in a thunk version works.
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
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)
230−thunkSpecTypes :: NonEmpty (NonEmpty ThunkSpec)
231−thunkSpecTypes = gitThunkSpecs :| [gitHubThunkSpecs]
233−-- | Attempts to match a 'ThunkSpec' to a given directory.
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
240−matchThunkSpecToDir thunkSpec dir dirFiles = do
241− case nonEmpty (toList $ dirFiles `Set.difference` expectedPaths) of
242− Just fs -> throwError $ ReadThunkError_UnrecognizedPaths $ (dir </>) <$> fs
244− case nonEmpty (toList $ requiredPaths `Set.difference` dirFiles) of
245− Just fs -> throwError $ ReadThunkError_MissingPaths $ (dir </>) <$> fs
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
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
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
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)
168+readThunk :: FilePath -> IO (Either ReadThunkError ThunkData)
299−readThunkWith specTypes dir = do
169+readThunk thunkDir = do
300− dirFiles <- Set.fromList <$> liftIO (listDirectory dir)
170+ files <- listDirectory thunkDir
301− let specs = concatMap toList $ toList $ NonEmpty.transpose specTypes -- Interleave spec types so we try each one in a "fair" ordering
171+ case ".git" `elem` files of
302− flip fix specs $ \loop -> \case
172+ True -> fmap ThunkData_Checkout <$> do
303− [] -> pure $ Left ReadThunkError_UnrecognizedThunk
173+ let origThunkPath = thunkDir </> ".git" </> "obelisk" </> "orig-thunk"
304− spec:rest -> runExceptT (matchThunkSpecToDir spec dir dirFiles) >>= \case
174+ doesDirectoryExist origThunkPath >>= \case
305− Left e -> putLog Debug [i|Thunk specification ${_thunkSpec_name spec} did not match ${dir}: ${e}|] *> loop rest
175+ True -> fmap Just <$> readPackedThunk origThunkPath
306− x@(Right _) -> x <$ putLog Debug [i|Thunk specification ${_thunkSpec_name spec} matched ${dir}|]
176+ False -> return $ return Nothing
177+ False -> fmap ThunkData_Packed <$> readPackedThunk thunkDir
308-- | Read a thunk and validate that it is exactly a packed thunk.
179-- | Read a thunk and validate that it is exactly a packed thunk.
309-- If additional data is present, fail.
180-- If additional data is present, fail.
310−readThunk :: (MonadObelisk m) => FilePath -> m (Either ReadThunkError ThunkData)
181+readPackedThunk :: FilePath -> IO (Either ReadThunkError ThunkPtr)
311−readThunk = readThunkWith thunkSpecTypes
182+readPackedThunk thunkDir = runExceptT $ do
312−
183+ let thunkLoader = thunkDir </> "default.nix"
313−parseThunkPtr :: (Aeson.Object -> Aeson.Parser ThunkSource) -> Aeson.Object -> Aeson.Parser ThunkPtr
184+ githubJson = thunkDir </> "github.json"
314−parseThunkPtr parseSrc v = do
185+ attrCache = thunkDir </> ".attr-cache"
315− rev <- v Aeson..: "rev"
186+ expectedContents = Set.fromList $
316− sha256 <- v Aeson..: "sha256"
187+ [ githubJson
317− src <- parseSrc v
188+ , thunkLoader
318− pure $ ThunkPtr
189+ ]
319− { _thunkPtr_rev = ThunkRev
190+ optionalContents = Set.fromList $
320− { _thunkRev_commit = Ref.fromHexString rev
191+ [ attrCache
321− , _thunkRev_nixSha256 = sha256
192+ ]
323− , _thunkPtr_source = src
326−parseGitHubSource :: Aeson.Object -> Aeson.Parser GitHubSource
327−parseGitHubSource v = do
328− owner <- v Aeson..: "owner"
329− repo <- v Aeson..: "repo"
330− branch <- v Aeson..:! "branch"
331− private <- v Aeson..:? "private"
333− { _gitHubSource_owner = owner
334− , _gitHubSource_repo = repo
335− , _gitHubSource_branch = branch
336− , _gitHubSource_private = fromMaybe False private
339−parseGitSource :: Aeson.Object -> Aeson.Parser GitSource
194+ -- Ensure that there aren't any other files in the thunk
195+ -- NB: System.Directory.listDirectory returns the contents without the directory path
196+ files <- liftIO $ Set.fromList . fmap (thunkDir </>) <$> listDirectory thunkDir
197+ let unexpectedContents = files `Set.difference` (expectedContents `Set.union` optionalContents)
198+ missingContents = expectedContents `Set.difference` files
199+ unless (Set.null unexpectedContents && Set.null missingContents) $ do
200+ throwError $ ReadThunkError_WrongContents unexpectedContents missingContents
202+ -- Ensure that we recognize the thunk loader
203+ loader <- liftIO $ T.readFile thunkLoader
204+ unless (loader `elem` gitHubStandaloneLoaders) $ do
205+ throwError $ ReadThunkError_UnrecognizedLoader loader
207+ txt <- liftIO $ LBS.readFile githubJson
208+ let parseThunk v = do
209+ rev <- v Aeson..: "rev"
210+ sha256 <- v Aeson..: "sha256"
211+ src <- parseGitHubSource v
340−parseGitSource v = do
212+ <|> parseGitSource v
341− Just url <- parseGitUri <$> v Aeson..: "url"
213+ return $ ThunkPtr
342− branch <- v Aeson..:! "branch"
214+ { _thunkPtr_rev = ThunkRev
343− fetchSubmodules <- v Aeson..:! "fetchSubmodules"
215+ { _thunkRev_commit = Ref.fromHexString rev
344− private <- v Aeson..:? "private"
216+ , _thunkRev_nixSha256 = sha256
218+ , _thunkPtr_source = src
220+ parseGitHubSource v = do
221+ owner <- v Aeson..: "owner"
222+ repo <- v Aeson..: "repo"
223+ branch <- v Aeson..:! "branch"
224+ mPrivate <- v Aeson..:! "private"
225+ return $ ThunkSource_GitHub $ GitHubSource
226+ { _gitHubSource_owner = owner
227+ , _gitHubSource_repo = repo
228+ , _gitHubSource_branch = branch
229+ , _gitHubSource_private = fromMaybe False mPrivate
231+ parseGitSource v = do
232+ Just url <- parseURI <$> v Aeson..: "url"
233+ branch <- v Aeson..:! "branch"
234+ fetchSubmodules <- v Aeson..: "fetchSubmodules"
345− pure $ GitSource
235+ return $ ThunkSource_Git $ GitSource
346− { _gitSource_url = url
236+ { _gitSource_url = url
347− , _gitSource_branch = branch
237+ , _gitSource_branch = branch
348− , _gitSource_fetchSubmodules = fromMaybe False fetchSubmodules
238+ , _gitSource_fetchSubmodules = fetchSubmodules
349− , _gitSource_private = fromMaybe False private
239+ }
350− }
240+ case parseMaybe parseThunk =<< decode txt of
241+ Nothing -> throwError $ ReadThunkError_UnparseablePtr txt
242+ Just ptr -> return ptr
352−overwriteThunk :: MonadObelisk m => FilePath -> ThunkPtr -> m ()
244+overwriteThunk :: FilePath -> ThunkPtr -> IO ()
353overwriteThunk target thunk = do
245overwriteThunk target thunk = do
354 -- Ensure that this directory is a valid thunk (i.e. so we aren't losing any data)
246 -- Ensure that this directory is a valid thunk (i.e. so we aren't losing any data)
355− readThunk target >>= \case
247+ Right _ <- readThunk target
356− Left e -> failWith [i|Invalid thunk at ${target}: ${e}|]
359 --TODO: Is there a safer way to do this overwriting?
249 --TODO: Is there a safer way to do this overwriting?
360− liftIO $ removePathForcibly target
250+ removeDirectoryRecursive target
361− createThunk target $ Right thunk
251+ createThunk target thunk
363−thunkPtrToSpec :: ThunkPtr -> ThunkSpec
253+thunkPtrLoader :: ThunkPtr -> Text
364−thunkPtrToSpec thunk = case _thunkPtr_source thunk of
254+thunkPtrLoader thunk = case _thunkPtr_source thunk of
365− ThunkSource_GitHub _ -> NonEmpty.head gitHubThunkSpecs
255+ ThunkSource_GitHub _ -> NonEmpty.head gitHubStandaloneLoaders
366− ThunkSource_Git _ -> NonEmpty.head gitThunkSpecs
256+ ThunkSource_Git _ -> NonEmpty.head plainGitStandaloneLoaders
368-- It's important that formatting be very consistent here, because
258-- It's important that formatting be very consistent here, because
369-- otherwise when people update thunks, their patches will be messy
259-- otherwise when people update thunks, their patches will be messy
@@ -372,18 +262,21 @@ encodeThunkPtrData (ThunkPtr rev src) = case src of
372 ThunkSource_GitHub s -> encodePretty' githubCfg $ Aeson.object $ catMaybes
262 ThunkSource_GitHub s -> encodePretty' githubCfg $ Aeson.object $ catMaybes
373 [ Just $ "owner" .= _gitHubSource_owner s
263 [ Just $ "owner" .= _gitHubSource_owner s
374 , Just $ "repo" .= _gitHubSource_repo s
264 , Just $ "repo" .= _gitHubSource_repo s
375− , ("branch" .=) <$> _gitHubSource_branch s
265+ , case _gitHubSource_branch s of
266+ Just b -> Just $ "branch" .= b
268+ , if _gitHubSource_private s
269+ then Just $ "private" .= True
376 , Just $ "rev" .= Ref.toHexString (_thunkRev_commit rev)
271 , Just $ "rev" .= Ref.toHexString (_thunkRev_commit rev)
377 , Just $ "sha256" .= _thunkRev_nixSha256 rev
272 , Just $ "sha256" .= _thunkRev_nixSha256 rev
378− , Just $ "private" .= _gitHubSource_private s
380 ThunkSource_Git s -> encodePretty' plainGitCfg $ Aeson.object $ catMaybes
274 ThunkSource_Git s -> encodePretty' plainGitCfg $ Aeson.object $ catMaybes
275+ --TODO: Is this safe? read/show is jank for `URI`
381− [ Just $ "url" .= gitUriToText (_gitSource_url s)
276+ [ Just $ "url" .= show (_gitSource_url s)
382 , Just $ "rev" .= Ref.toHexString (_thunkRev_commit rev)
277 , Just $ "rev" .= Ref.toHexString (_thunkRev_commit rev)
383− , ("branch" .=) <$> _gitSource_branch s
384 , Just $ "sha256" .= _thunkRev_nixSha256 rev
278 , Just $ "sha256" .= _thunkRev_nixSha256 rev
385 , Just $ "fetchSubmodules" .= _gitSource_fetchSubmodules s
279 , Just $ "fetchSubmodules" .= _gitSource_fetchSubmodules s
386− , Just $ "private" .= _gitSource_private s
389 githubCfg = defConfig
282 githubCfg = defConfig
@@ -404,84 +297,54 @@ encodeThunkPtrData (ThunkPtr rev src) = case src of
406 , "sha256"
299 , "sha256"
408 , "fetchSubmodules"
300 , "fetchSubmodules"
409 ] <> compare
301 ] <> compare
410 , confTrailingNewline = True
302 , confTrailingNewline = True
413−createThunk :: MonadObelisk m => FilePath -> Either ThunkSpec ThunkPtr -> m ()
305+createThunk :: FilePath -> ThunkPtr -> IO ()
414−createThunk target ptrInfo =
306+createThunk target thunk = do
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)
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
307+ createDirectoryIfMissing True (target </> ".attr-cache")
427− f fullPath
308+ T.writeFile (target </> "default.nix") (thunkPtrLoader thunk)
309+ LBS.writeFile (target </> "github.json") (encodeThunkPtrData thunk)
429−createThunkWithLatest :: MonadObelisk m => FilePath -> ThunkSource -> m ()
311+createThunkWithLatest :: FilePath -> ThunkSource -> IO ()
430createThunkWithLatest target s = do
312createThunkWithLatest target s = do
431 rev <- getLatestRev s
313 rev <- getLatestRev s
432− createThunk target $ Right $ ThunkPtr
314+ createThunk target $ ThunkPtr
433 { _thunkPtr_source = s
315 { _thunkPtr_source = s
434 , _thunkPtr_rev = rev
316 , _thunkPtr_rev = rev
437−updateThunkToLatest :: MonadObelisk m => ThunkUpdateConfig -> FilePath -> m ()
319+updateThunkToLatest :: FilePath -> IO ()
438−updateThunkToLatest (ThunkUpdateConfig mBranch thunkConfig) target = spinner $ do
320+updateThunkToLatest target = do
439− checkThunkDirectory target
440− -- check to see if thunk should be updated to a specific branch or just update it's current branch
443− (overwrite, ptr) <- readThunk target >>= \case
321+ (overwrite, ptr) <- readThunk target >>= \case
444− Left err -> failWith [i|Thunk update: ${err}|]
322+ Left err -> fail $ "thunk update: " <> show err
445− Right c -> case c of
323+ Right c -> return $ case c of
446− ThunkData_Packed _ t -> return (target, t)
324+ ThunkData_Packed t -> (target, t)
447− ThunkData_Checkout -> failWith "cannot update an unpacked thunk"
325+ ThunkData_Checkout _ -> fail "cannot update an unpacked thunk"
448− let src = _thunkPtr_source ptr
326+ let src = _thunkPtr_source ptr
449− rev <- getLatestRev src
327+ rev <- getLatestRev src
450− overwriteThunk overwrite $ modifyThunkPtrByConfig thunkConfig $ ThunkPtr
328+ overwriteThunk overwrite $ ThunkPtr
451− { _thunkPtr_source = src
329+ { _thunkPtr_source = src
452− , _thunkPtr_rev = rev
330+ , _thunkPtr_rev = rev
454− Just branch -> readThunk target >>= \case
455− Left err -> failWith [i|Thunk update: ${err}|]
456− Right c -> case c of
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.|]
460− spinner = withSpinner' ("Updating thunk " <> T.pack target <> " to latest") (pure $ const $ "Thunk " <> T.pack target <> " updated to latest")
462−setThunk :: MonadObelisk m => ThunkConfig -> FilePath -> GitSource -> String -> m ()
463−setThunk thunkConfig target gs branch = do
464− newThunkPtr <- uriThunkPtr (_gitSource_url gs) (_thunkConfig_private thunkConfig) (Just $ T.pack branch) Nothing
465− overwriteThunk target newThunkPtr
466− updateThunkToLatest (ThunkUpdateConfig Nothing thunkConfig) target
468-- | All recognized github standalone loaders, ordered from newest to oldest.
333-- | All recognized github standalone loaders, ordered from newest to oldest.
469-- This tool will only ever produce the newest one when it writes a thunk.
334-- This tool will only ever produce the newest one when it writes a thunk.
470−gitHubThunkSpecs :: NonEmpty ThunkSpec
335+gitHubStandaloneLoaders :: NonEmpty Text
471−gitHubThunkSpecs =
336+gitHubStandaloneLoaders =
472− gitHubThunkSpecV5 :|
337+ gitHubStandaloneLoaderV2 :|
473− [ gitHubThunkSpecV4
338+ [ gitHubStandaloneLoaderV1
479−gitHubThunkSpecV1 :: ThunkSpec
341+gitHubStandaloneLoaderV1 :: Text
480−gitHubThunkSpecV1 = legacyGitHubThunkSpec "github-v1"
342+gitHubStandaloneLoaderV1 = T.unlines
481− "import ((import <nixpkgs> {}).fetchFromGitHub (builtins.fromJSON (builtins.readFile ./github.json)))"
343+ [ "import ((import <nixpkgs> {}).fetchFromGitHub (builtins.fromJSON (builtins.readFile ./github.json)))"
483−gitHubThunkSpecV2 :: ThunkSpec
346+gitHubStandaloneLoaderV2 :: Text
484−gitHubThunkSpecV2 = legacyGitHubThunkSpec "github-v2" $ T.unlines
347+gitHubStandaloneLoaderV2 = T.unlines
485 [ "# DO NOT HAND-EDIT THIS FILE" --TODO: Add something about how to get more info on Obelisk, etc.
348 [ "# DO NOT HAND-EDIT THIS FILE" --TODO: Add something about how to get more info on Obelisk, etc.
486 , "import ((import <nixpkgs> {}).fetchFromGitHub ("
349 , "import ((import <nixpkgs> {}).fetchFromGitHub ("
487 , " let json = builtins.fromJSON (builtins.readFile ./github.json);"
350 , " let json = builtins.fromJSON (builtins.readFile ./github.json);"
@@ -491,701 +354,287 @@ gitHubThunkSpecV2 = legacyGitHubThunkSpec "github-v2" $ T.unlines
494−gitHubThunkSpecV3 :: ThunkSpec
357+plainGitStandaloneLoaders :: NonEmpty Text
495−gitHubThunkSpecV3 = legacyGitHubThunkSpec "github-v3" $ T.unlines
358+plainGitStandaloneLoaders =
496− [ "# DO NOT HAND-EDIT THIS FILE"
359+ plainGitStandaloneLoaderV1 :|
498− , " fetch = { private ? false, ... }@args: if private && builtins.hasAttr \"fetchGit\" builtins"
499− , " then fetchFromGitHubPrivate args"
500− , " else (import <nixpkgs> {}).fetchFromGitHub (builtins.removeAttrs args [\"branch\"]);"
501− , " fetchFromGitHubPrivate ="
502− , " { owner, repo, rev, branch ? null, name ? null, sha256 ? null, private ? false"
503− , " , fetchSubmodules ? false, githubBase ? \"github.com\", ..."
504− , " }: assert !fetchSubmodules;"
505− , " builtins.fetchGit ({"
506− , " url = \"ssh://git@${githubBase}/${owner}/${repo}.git\";"
509− , " // (if branch == null then {} else { ref = branch; })"
510− , " // (if name == null then {} else { inherit name; }));"
511− , "in import (fetch (builtins.fromJSON (builtins.readFile ./github.json)))"
514−gitHubThunkSpecV4 :: ThunkSpec
515−gitHubThunkSpecV4 = legacyGitHubThunkSpec "github-v4" $ T.unlines
516− [ "# DO NOT HAND-EDIT THIS FILE"
517− , "let fetch = { private ? false, fetchSubmodules ? false, owner, repo, rev, sha256, ... }:"
518− , " if !fetchSubmodules && !private then builtins.fetchTarball {"
519− , " url = \"https://github.com/${owner}/${repo}/archive/${rev}.tar.gz\"; inherit sha256;"
520− , " } else (import <nixpkgs> {}).fetchFromGitHub {"
521− , " inherit owner repo rev sha256 fetchSubmodules private;"
523− , "in import (fetch (builtins.fromJSON (builtins.readFile ./github.json)))"
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)
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;
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
562− [ "# DO NOT HAND-EDIT THIS FILE"
563− , "let fetchGit = {url, rev, ref ? null, branch ? null, sha256 ? null, fetchSubmodules ? null}:"
564− , " assert !fetchSubmodules; (import <nixpkgs> {}).fetchgit { inherit url rev sha256; };"
565− , "in import (fetchGit (builtins.fromJSON (builtins.readFile ./git.json)))"
568−gitThunkSpecV2 :: ThunkSpec
569−gitThunkSpecV2 = legacyGitThunkSpec "git-v2" $ T.unlines
570− [ "# DO NOT HAND-EDIT THIS FILE"
571− , "let fetchGit = {url, rev, ref ? null, branch ? null, sha256 ? null, fetchSubmodules ? null}:"
572− , " if builtins.hasAttr \"fetchGit\" builtins"
573− , " then builtins.fetchGit ({ inherit url rev; } // (if branch == null then {} else { ref = branch; }))"
574− , " else abort \"Plain Git repositories are only supported on nix 2.0 or higher.\";"
575− , "in import (fetchGit (builtins.fromJSON (builtins.readFile ./git.json)))"
578−-- This loader has a bug because @builtins.fetchGit@ is not given a @ref@
579−-- and will fail to find commits without this because it does shallow clones.
580−gitThunkSpecV3 :: ThunkSpec
581−gitThunkSpecV3 = legacyGitThunkSpec "git-v3" $ T.unlines
582− [ "# DO NOT HAND-EDIT THIS FILE"
583− , "let fetch = {url, rev, ref ? null, sha256 ? null, fetchSubmodules ? false, private ? false, ...}:"
584− , " let realUrl = let firstChar = builtins.substring 0 1 url; in"
585− , " if firstChar == \"/\" then /. + url"
586− , " else if firstChar == \".\" then ./. + url"
588− , " in if !fetchSubmodules && private then builtins.fetchGit {"
589− , " url = realUrl; inherit rev;"
590− , " } else (import <nixpkgs> {}).fetchgit {"
591− , " url = realUrl; inherit rev sha256;"
593− , "in import (fetch (builtins.fromJSON (builtins.readFile ./git.json)))"
596−gitThunkSpecV4 :: ThunkSpec
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
363+plainGitStandaloneLoaderV1 :: Text
614−legacyGitThunkSpec name loader = ThunkSpec name $ Map.fromList
364+plainGitStandaloneLoaderV1 = T.unlines
615− [ ("default.nix", ThunkFileSpec_FileMatches $ T.strip loader)
365+ [ $notImplemented
616− , ("git.json" , ThunkFileSpec_Ptr parseGitJsonBytes)
617− , (attrCacheFileName, ThunkFileSpec_AttrCache)
618− , (".git", ThunkFileSpec_CheckoutIndicator)
621−gitThunkSpecV5 :: ThunkSpec
368+-- | Look for authentication info from the 'hub' command
622−gitThunkSpecV5 = mkThunkSpec "git-v5" "git.json" parseGitJsonBytes [here|
369+getHubAuth
623−# DO NOT HAND-EDIT THIS FILE
370+ :: Text -- ^ Domain name
624−let fetch = {url, rev, branch ? null, sha256 ? null, fetchSubmodules ? false, private ? false, ...}:
371+ -> IO (Maybe Auth)
625− let realUrl = let firstChar = builtins.substring 0 1 url; in
372+getHubAuth domain = do
626− if firstChar == "/" then /. + url
373+ hubConfig <- getXdgDirectory XdgConfig "hub"
627− else if firstChar == "." then ./. + url
374+ Yaml.decodeFile hubConfig >>= \case
628− else url;
375+ Nothing -> return Nothing
629− in if !fetchSubmodules && private then builtins.fetchGit {
376+ Just v -> return $ flip parseMaybe v $ \v' -> do
630− url = realUrl; inherit rev;
377+ Yaml.Array domainConfigs <- v' .: domain --TODO: Determine what multiple domainConfigs means
631− ${if branch == null then null else "ref"} = branch;
378+ [Yaml.Object domainConfig] <- return $ toList domainConfigs
632− } else (import <nixpkgs> {}).fetchgit {
379+ token <- domainConfig .: "oauth_token"
633− url = realUrl; inherit rev sha256;
380+ return $ OAuth $ encodeUtf8 token
635− json = builtins.fromJSON (builtins.readFile ./git.json);
382+--TODO: when checking something out, make a shallow clone
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
660-- | Checks a cache directory to see if there is a fresh symlink
384-- | Checks a cache directory to see if there is a fresh symlink
661-- to the result of building an attribute of a thunk.
385-- to the result of building an attribute of a thunk.
662-- If no cache hit is found, nix-build is called to build the attribute
386-- If no cache hit is found, nix-build is called to build the attribute
663-- and the result is symlinked into the cache.
387-- and the result is symlinked into the cache.
664−nixBuildThunkAttrWithCache
388+nixBuildThunkAttrWithCache :: FilePath
668− -- ^ Path to directory containing Thunk
389+ -- ^ Path to directory containing Thunk
669− -> String
390+ -> String
670− -- ^ Attribute to build
391+ -- ^ Attribute to build
671− -> m (Maybe FilePath)
392+ -> IO FilePath
672− -- ^ Symlink to cached or built nix output
393+ -- ^ Symlink to cached or built nix output
673-- WARNING: If the thunk uses an impure reference such as '<nixpkgs>'
394-- WARNING: If the thunk uses an impure reference such as '<nixpkgs>'
674-- the caching mechanism will fail as it merely measures the modification
395-- the caching mechanism will fail as it merely measures the modification
675-- time of the cache link and the expression to build.
396-- time of the cache link and the expression to build.
676−nixBuildThunkAttrWithCache thunkSpec thunkDir attr = do
397+nixBuildThunkAttrWithCache thunkDir attr = do
677− latestChange <- liftIO $ do
398+ --NB: Expects thunkDir to be normalised with no trailing path separator.
678− let
399+ --This should be guaranteed by the command argument parser.
679− getModificationTimeMaybe = fmap rightToMaybe . try @IOError . getModificationTime
680− thunkFileNames = Map.keys $ _thunkSpec_files thunkSpec
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"
689− cacheErrHandler e
400+ let cacheErrHandler e
690− | isDoesNotExistError e = pure Nothing -- expected from a cache miss
401+ | isDoesNotExistError e = return Nothing -- expected from a cache miss
691− | otherwise = Nothing <$ putLog Error (T.pack $ displayException e)
402+ | otherwise = hPutStrLn stderr (displayException e) >> return Nothing
403+ cacheDir = thunkDir </> ".attr-cache"
404+ cachePath = cacheDir </> attr <.> "out"
405+ createDirectoryIfMissing False cacheDir
406+ latestChange <- maximum <$> mapM (getModificationTime . (thunkDir </>)) ["default.nix", "github.json"]
692− cacheHit <- handle cacheErrHandler $ do
407+ cacheHit <- handle cacheErrHandler $ do
693− cacheTime <- liftIO $ posixSecondsToUTCTime . realToFrac . modificationTime <$> getSymbolicLinkStatus cachePath
408+ cacheTime <- posixSecondsToUTCTime . realToFrac . modificationTime <$> getSymbolicLinkStatus cachePath
694− pure $ if latestChange <= cacheTime
409+ return $ if latestChange <= cacheTime
695− then Just cachePath
410+ then Just cachePath
696− else Nothing
411+ else Nothing
697− case cacheHit of
412+ case cacheHit of
698− Just c -> pure c
413+ Just c -> return c
699− Nothing -> do
414+ Nothing -> do
700− putLog Warning $ T.pack $ mconcat [thunkDir, ": ", attr, " not cached, building ..."]
415+ hPutStrLn stderr (mconcat [thunkDir, ": ", attr, " not cached, building ..."])
701− liftIO $ createDirectoryIfMissing True (takeDirectory cachePath)
416+ _ <- nixBuild $ def
702− (cachePath <$) $ nixCmd $ NixCmd_Build $ def
417+ { _nixBuildConfig_target = Target
703− & nixBuildConfig_outLink .~ OutLink_IndirectRoot cachePath
704− & nixCmdConfig_target .~ Target
705− { _target_path = Just thunkDir
418+ { _target_path = thunkDir
706− , _target_attr = Just attr
419+ , _target_attr = Just attr
707− , _target_expr = Nothing
420+ }
421+ , _nixBuildConfig_outLink = OutLink_IndirectRoot cachePath
710-- | Build a nix attribute, and cache the result if possible
425-- | Build a nix attribute, and cache the result if possible
711−nixBuildAttrWithCache
426+nixBuildAttrWithCache :: FilePath
714− -- ^ Path to directory containing Thunk
427+ -- ^ Path to directory containing Thunk
715− -> String
428+ -> String
716− -- ^ Attribute to build
429+ -- ^ Attribute to build
717− -> m FilePath
430+ -> IO FilePath
718− -- ^ Symlink to cached or built nix output
431+ -- ^ Symlink to cached or built nix output
719−nixBuildAttrWithCache exprPath attr = readThunk exprPath >>= \case
432+nixBuildAttrWithCache exprPath attr = do
433+ readThunk exprPath >>= \case
720− -- Only packed thunks are cached. In particular, checkouts are not.
434+ -- Only packed thunks are cached. in particular, checkouts are not
721− Right (ThunkData_Packed spec _) ->
722− maybe build pure =<< nixBuildThunkAttrWithCache spec exprPath attr
435+ Right (ThunkData_Packed _) -> nixBuildThunkAttrWithCache exprPath attr
723− _ -> build
436+ _ -> nixBuild $ def
724− where
437+ { _nixBuildConfig_target = Target
725− build = nixCmd $ NixCmd_Build $ def
726− & nixBuildConfig_outLink .~ OutLink_None
727− & nixCmdConfig_target .~ Target
728− { _target_path = Just exprPath
438+ { _target_path = exprPath
729 , _target_attr = Just attr
439 , _target_attr = Just attr
730− , _target_expr = Nothing
441+ , _nixBuildConfig_outLink = OutLink_None
733−-- | Safely update thunk using a custom action
444+unpackThunk :: FilePath
735−-- A temporary working space is used to do any update. When the custom
736−-- action successfully completes, the resulting (packed) thunk is copied
737−-- back to the original location.
738−updateThunk :: MonadObelisk m => FilePath -> (FilePath -> m a) -> m a
739−updateThunk p f = withSystemTempDirectory "obelisk-thunkptr-" $ \tmpDir -> do
740− p' <- copyThunkToTmp tmpDir p
741− unpackThunk' True p'
743− updateThunkFromTmp p'
746− copyThunkToTmp tmpDir thunkDir = readThunk thunkDir >>= \case
446+unpackThunk thunkDir = readThunk thunkDir >>= \case
747− Left err -> failWith $ "withThunkUnpacked: " <> T.pack (show err)
447+ Left err -> fail $ "thunk unpack: " <> show err
748− Right ThunkData_Packed{} -> do
749− let tmpThunk = tmpDir </> "thunk"
750− callProcessAndLogOutput (Notice, Error) $
751− proc cp ["-r", "-T", thunkDir, tmpThunk]
753− Right _ -> failWith "Thunk is not packed"
754− updateThunkFromTmp p' = do
755− _ <- packThunk' True (ThunkPackConfig False (ThunkConfig Nothing)) p'
756− callProcessAndLogOutput (Notice, Error) $
757− proc cp ["-r", "-T", p', p]
759−finalMsg :: Bool -> (a -> Text) -> Maybe (a -> Text)
760−finalMsg noTrail s = if noTrail then Nothing else Just s
762−-- | Check that we are not somewhere inside the thunk directory
763−checkThunkDirectory :: MonadObelisk m => FilePath -> m ()
764−checkThunkDirectory thunkDir = do
765− currentDir <- liftIO getCurrentDirectory
766− thunkDir' <- liftIO $ canonicalizePath thunkDir
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
779−unpackThunk' :: MonadObelisk m => Bool -> FilePath -> m ()
780−unpackThunk' noTrail thunkDir = checkThunkDirectory thunkDir *> readThunk thunkDir >>= \case
781− Left err -> failWith [i|Invalid thunk at ${thunkDir}: ${err}|]
782 --TODO: Overwrite option that rechecks out thunk; force option to do so even if working directory is dirty
448 --TODO: Overwrite option that rechecks out thunk; force option to do so even if working directory is dirty
783− Right ThunkData_Checkout -> failWith [i|Thunk at ${thunkDir} is already unpacked|]
449+ Right (ThunkData_Checkout _) -> fail "thunk unpack: thunk is already unpacked"
784− Right (ThunkData_Packed _ tptr) -> do
450+ Right (ThunkData_Packed tptr) -> case _thunkPtr_source tptr of
785− let (thunkParent, thunkName) = splitFileName thunkDir
451+ ThunkSource_GitHub s | (thunkParent, thunkName) <- splitFileName thunkDir -> withTempDirectory thunkParent thunkName $ \tmpRepo -> do
786− withTempDirectory thunkParent thunkName $ \tmpThunk -> do
452+ mauth <- getHubAuth "github.com"
787− let
453+ repoResult <- executeRequestMaybe mauth $ repositoryR (_gitHubSource_owner s) (_gitHubSource_repo s)
788− gitSrc = thunkSourceToGitSource $ _thunkPtr_source tptr
454+ githubURI <- either throwIO (return . repoSshUrl) repoResult >>= \case
789− newSpec = case _thunkPtr_source tptr of
455+ Nothing -> fail "Cannot determine clone URI for thunk source"
790− ThunkSource_GitHub _ -> NonEmpty.head gitHubThunkSpecs
456+ Just c -> return $ T.unpack $ getUrl c
791− ThunkSource_Git _ -> NonEmpty.head gitThunkSpecs
457+ callProcess "hub" --TODO: Depend on hub explicitly
792− withSpinner' ("Fetching thunk " <> T.pack thunkName)
458+ [ "clone"
793− (finalMsg noTrail $ const $ "Fetched thunk " <> T.pack thunkName) $ do
459+ , "-n"
794− let unpackedPath = tmpThunk </> unpackedDirName
460+ , githubURI
795− gitCloneForThunkUnpack gitSrc (_thunkRev_commit $ _thunkPtr_rev tptr) unpackedPath
461+ , tmpRepo
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
812− let git = callProcessAndLogOutput (Notice, Notice) . gitProc dir
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"]
822−--TODO: add a rollback mode to pack to the original thunk
823−packThunk :: MonadObelisk m => ThunkPackConfig -> FilePath -> m ThunkPtr
824−packThunk = packThunk' False
826−packThunk' :: MonadObelisk m => Bool -> ThunkPackConfig -> FilePath -> m 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|]
830− ("Packing thunk " <> T.pack thunkDir)
831− (finalMsg noTrail $ const $ "Packed thunk " <> T.pack thunkDir) $
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
839−modifyThunkPtrByConfig :: ThunkConfig -> ThunkPtr -> ThunkPtr
840−modifyThunkPtrByConfig (ThunkConfig markPrivate') ptr = case markPrivate' of
842− Just markPrivate -> ptr { _thunkPtr_source = case _thunkPtr_source ptr of
843− ThunkSource_Git s -> ThunkSource_Git $ s { _gitSource_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
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
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
869− "thunk pack: thunk checkout contains unsaved modifications"
871− -- Check whether there are any stashes
872− when checkClean $ do
873− stashOutput <- readGitProcess thunkDir ["stash", "list"]
874− unless (T.null stashOutput) $
875− failWith $ T.unlines $
876− [ "thunk pack: thunk checkout has stashes"
878− ] ++ T.lines stashOutput
880− -- Get current branch
881− (mCurrentBranch, mCurrentCommit) <- do
882− b <- listToMaybe . T.lines <$> readGitProcess thunkDir ["rev-parse", "--abbrev-ref", "HEAD"]
883− c <- listToMaybe . T.lines <$> readGitProcess thunkDir ["rev-parse", "HEAD"]
885− (Just "HEAD") -> failWith $ T.unlines
886− [ "thunk pack: You are in 'detached HEAD' state."
887− , "If you want to pack at the current ref \
888− \then please create a new branch with 'git checkout -b <new-branch-name>' and push this upstream."
890− _ -> return (b, c)
463+ let obGitDir = tmpRepo </> ".git" </> "obelisk"
891−
464+ --If this directory already exists then something is weird and we should fail
892− -- Get information on all branches and their (optional) designated upstream
465+ createDirectory obGitDir
893− -- correspondents
466+ callProcess "cp"
894− headDump :: [Text] <- T.lines <$> readGitProcess thunkDir
467+ [ "-r"
895− [ "for-each-ref"
468+ , "-T"
896− , "--format=%(refname:short) %(upstream:short) %(upstream:remotename)"
469+ , thunkDir </> "."
897− , "refs/heads/"
470+ , obGitDir </> "orig-thunk"
900− (headInfo :: Map Text (Maybe (Text, Text)))
901− <- fmap Map.fromList $ forM headDump $ \line -> do
902− (branch : restOfLine) <- pure $ T.words line
903− mUpstream <- case restOfLine of
905− [u, r] -> pure $ Just (u, r)
906− (_:_) -> failWith "git for-each-ref invalid output"
907− pure (branch, mUpstream)
909− putLog Debug $ "branches: " <> T.pack (show headInfo)
911− let errorMap :: Map Text ()
912− headUpstream :: Map Text (Text, Text)
913− (errorMap, headUpstream) = flip Map.mapEither headInfo $ \case
917− putLog Debug $ "branches with upstream branch set: " <> T.pack (show headUpstream)
919− -- Check that every branch has a remote equivalent
920− when checkClean $ do
921− let untrackedBranches = Map.keys errorMap
922− when (not $ L.null untrackedBranches) $ failWith $ T.unlines $
923− [ "thunk pack: Certain branches in the thunk have no upstream branch \
924− \set. This means we don't know to check whether all your work is \
925− \saved. The offending branches are:"
927− , T.unwords untrackedBranches
929− , "To fix this, you probably want to do:"
932− ((\branch -> "git push -u origin " <> branch) <$> untrackedBranches) ++
934− , "These will push the branches to the default remote under the same \
935− \name, and (thanks to the `-u`) remember that choice so you don't \
936− \get this error again."
939− -- loosely by https://stackoverflow.com/questions/7773939/show-git-ahead-and-behind-info-for-all-branches-including-remotes
940− stats <- ifor headUpstream $ \branch (upstream, _remote) -> do
941− (stat :: [Text]) <- T.lines <$> readGitProcess thunkDir
942− [ "rev-list", "--left-right"
943− , T.unpack branch <> "..." <> T.unpack upstream
945− let ahead = length $ [ () | Just ('<', _) <- T.uncons <$> stat ]
472+ let checkoutOptions = concat
946− behind = length $ [ () | Just ('>', _) <- T.uncons <$> stat ]
473+ [ ["-C", tmpRepo]
947− pure (upstream, (ahead, behind))
474+ , pure "checkout"
948−
475+ , maybe [] (\n -> ["-B", T.unpack (untagName n)]) (_gitHubSource_branch s)
949− -- Those branches which have commits ahead of, i.e. not on, the upstream
476+ , pure $ Ref.toHexString $ _thunkRev_commit $ _thunkPtr_rev tptr
950− -- branch. Purely being behind is fine.
477+ ]
951− let nonGood = Map.filter ((/= 0) . fst . snd) stats
478+ callProcess "hub" checkoutOptions
489+ ThunkSource_Git _s -> do
953− when (not $ Map.null nonGood) $ failWith $ T.unlines $
492+--TODO: add force mode to pack even if changes are present
954− [ "thunk pack: Certain branches in the thunk have commits not yet pushed upstream:"
493+--TODO: add a rollback mode to pack to the original thunk
955− , ""
494+packThunk :: FilePath
957− flip map (Map.toList nonGood) (\(branch, (upstream, (ahead, behind))) -> mconcat
496+ -> IO ()
958− [" ", branch, " ahead: ", T.pack (show ahead), " behind: ", T.pack (show behind), " remote branch ", upstream]) ++
497+packThunk thunkDir upstream = readThunk thunkDir >>= \case
959− [ ""
498+ Left err -> fail $ "thunk pack: " <> show err
960− , "Please push these upstream and try again. (Or just fetch, if they are somehow \
499+ Right (ThunkData_Packed _) -> fail "pack: thunk is already packed"
961− \pushed but this repo's remote tracking branches don't know it.)"
500+ Right (ThunkData_Checkout _) -> do
501+ --Check whether the working directory is clean
502+ statusOutput <- readProcess "hub"
504+ , "status", "--porcelain", "--ignored" ] ""
505+ diffOutput <- readProcess "hub" [ "-C", thunkDir , "diff" ] ""
506+ case null statusOutput && null diffOutput of
508+ statusDebug <- readProcess "hub"
509+ [ "-C", thunkDir, "status", "--ignored" ] ""
511+ [ "thunk pack: thunk checkout contains unsaved modifications"
513+ ] ++ lines statusDebug
516+ -- Check whether there are any stashes
517+ stashOutput <- readProcess "hub" [ "-C", thunkDir, "stash", "list" ] ""
518+ case null stashOutput of
521+ [ "thunk pack: thunk checkout has stashes"
523+ ] ++ lines stashOutput
526+ --Check whether all local heads are pushed
527+ repoHeads <- lines <$> readProcess "hub"
529+ , "for-each-ref", "--format=%(refname:short)", "refs/heads/"
531+ remotes <- lines <$> readProcess "hub" [ "-C", thunkDir, "remote" ] ""
532+ --Check that the upstream specified actually exists
533+ case L.find (== upstream) remotes of
534+ Nothing -> fail $ "thunk pack: upstream " <> upstream <> " does not exist"
536+ -- iterate over cartesian product
537+ forM_ repoHeads $ \hd -> do
538+ [localRev] <- lines <$> readProcess "hub" [ "-C", thunkDir, "rev-parse", hd ] ""
539+ forM_ remotes $ \rm -> do
540+ --TODO: The error you get if a branch isn't pushed anywhere could be made more user friendly
541+ [remoteMergeRev] <- lines <$> readProcess "hub"
545+ , "remotes/" <> rm <> "/" <> hd
547+ case remoteMergeRev == localRev of
548+ False -> fail $ mconcat [ "thunk unpack: branch ", hd, " has not been pushed to ", rm ]
551+ --We assume it's safe to pack the thunk at this point
552+ [remoteUri'] <- lines <$> readProcess "hub"
554+ , "config", "--get", "remote." <> upstream <> ".url"
557+ let uriParseFailure = "Could not identify git remote: " <> remoteUri'
558+ mRemoteUri = parseURIReference remoteUri'
559+ <|> parseSshShorthand remoteUri'
560+ thunkPtr <- case mRemoteUri of
561+ Nothing -> fail uriParseFailure
562+ Just remoteUri -> do
563+ refs <- fmap (refsToTuples . words) . lines <$> readProcess "hub"
568+ -- safe because exactly one hash is associated with HEAD
569+ let Just currentHead = fst <$> L.find ((== "HEAD") . snd) refs
570+ remoteHeads = Map.fromList $ catMaybes $ fmap
571+ (\(x,y) -> (,) x <$> L.stripPrefix ("refs/remotes/" <> upstream <> "/") y)
573+ localHeads = Map.fromList $ catMaybes $ fmap
574+ (\(x,y) -> (,) x <$> L.stripPrefix "refs/heads/" y)
576+ currentUpstreamBranch = Map.lookup currentHead remoteHeads
577+ <|> Map.lookup currentHead localHeads
579+ | isGithubThunk remoteUri -> githubThunkPtr remoteUri currentHead currentUpstreamBranch
580+ | otherwise -> gitThunkPtr remoteUri currentHead currentUpstreamBranch
963−
585+ createThunk thunkDir thunkPtr
964− when checkClean $ do
586+ return ()
965− -- We assume it's safe to pack the thunk at this point
587+ where
966− putLog Informational "All changes safe in git remotes. OK to pack thunk."
588+ refsToTuples [x, y] = (x, y)
967−
589+ refsToTuples x = error $ "thunk pack: cannot parse ref " <> show x
968− let remote = maybe "origin" snd $ flip Map.lookup headUpstream =<< mCurrentBranch
590+ isGithubThunk u
970− [remoteUri'] <- fmap T.lines $ readGitProcess thunkDir
973− , "remote." <> T.unpack remote <> ".url"
976− remoteUri <- case parseGitUri remoteUri' of
977− Nothing -> failWith $ "Could not identify git remote: " <> remoteUri'
978− Just uri -> pure uri
979− uriThunkPtr remoteUri mPrivate mCurrentBranch mCurrentCommit
981−-- | Get the latest revision available from the given source
982−getLatestRev :: MonadObelisk m => ThunkSource -> m ThunkRev
984− let gitS = thunkSourceToGitSource os
985− (_, commit) <- gitGetCommitBranch (_gitSource_url gitS) (untagName <$> _gitSource_branch gitS)
987− ThunkSource_GitHub s -> githubThunkRev s commit
988− ThunkSource_Git s -> gitThunkRev s commit
990−-- | Convert a URI to a thunk
992−-- If the URL is a github URL, we try to just download an archive for
993−-- performance. If that doesn't work (e.g. authentication issue), we fall back
994−-- on just doing things the normal way for git repos in general, and save it as
995−-- a regular git thunk.
996−uriThunkPtr :: MonadObelisk m => GitUri -> Maybe Bool -> Maybe Text -> Maybe Text -> m ThunkPtr
997−uriThunkPtr uri mPrivate mbranch mcommit = do
998− commit <- case mcommit of
999− Nothing -> gitGetCommitBranch uri mbranch >>= return . snd
1000− (Just c) -> return c
1001− (src, rev) <- uriToThunkSource uri mPrivate mbranch >>= \case
1002− ThunkSource_GitHub s -> do
1003− rev <- runExceptT $ githubThunkRev s commit
1005− Right r -> pure (ThunkSource_GitHub s, r)
1008−\Failed to fetch archive from GitHub. This is probably a private repo. \
1009−\Falling back on normal fetchgit. Original failure:"
1011− let s' = forgetGithub True s
1012− (,) (ThunkSource_Git s') <$> gitThunkRev s' commit
1013− ThunkSource_Git s -> (,) (ThunkSource_Git s) <$> gitThunkRev s commit
1015− { _thunkPtr_rev = rev
1016− , _thunkPtr_source = src
1019−-- | N.B. Cannot infer all fields.
1021−-- If the thunk is a GitHub thunk and fails, we do *not* fall back like with
1022−-- `uriThunkPtr`. Unlike a plain URL, a thunk src explicitly states which method
1023−-- should be employed, and so we respect that.
1024−uriToThunkSource :: MonadObelisk m => GitUri -> Maybe Bool -> Maybe Text -> m ThunkSource
1025−uriToThunkSource (GitUri u) mPrivate
1026− | Right uriAuth <- URI.uriAuthority u
591+ | Just uriAuth <- uriAuthority u
1027− , Just scheme <- URI.unRText <$> URI.uriScheme u
592+ = case uriScheme u of
1028− , case scheme of
593+ "ssh:" -> uriAuth == URIAuth "git@" "github.com" ""
1029− "ssh" -> uriAuth == URI.Authority
1030− { URI.authUserInfo = Just $ URI.UserInfo (fromRight' $ URI.mkUsername "git") Nothing
1031− , URI.authHost = fromRight' $ URI.mkHost "github.com"
1032− , URI.authPort = Nothing
1034− s -> s `L.elem` [ "git", "https", "http" ] -- "http:" just redirects to "https:"
594+ s -> s `L.elem` [ "git:", "https:", "http:" ] -- "http:" just redirects to "https:"
1035− && URI.unRText (URI.authHost uriAuth) == "github.com"
595+ && uriRegName uriAuth == "github.com"
1036− , Just (_, owner :| [repoish]) <- URI.uriPath u
596+ | otherwise = False
1037− = \mbranch -> do
597+ githubThunkPtr u commit' branch' = do
1038− isPrivate <- getIsPrivate
598+ ["/", owner', repo'] <- return $ splitDirectories (uriPath u)
1039− pure $ ThunkSource_GitHub $ GitHubSource
599+ let owner = N (T.pack owner')
1040− { _gitHubSource_owner = N $ URI.unRText owner
600+ repo = N (T.pack (dropExtension repo'))
1041− , _gitHubSource_repo = N $ let
601+ commit = N (T.pack commit')
1042− repoish' = URI.unRText repoish
602+ branch = N . T.pack <$> branch'
1043− in fromMaybe repoish' $ T.stripSuffix ".git" repoish'
603+ mauth <- getHubAuth "github.com"
1044− , _gitHubSource_branch = N <$> mbranch
604+ repoResult <- executeRequestMaybe mauth $ repositoryR owner repo
1045− , _gitHubSource_private = isPrivate
605+ repoIsPrivate <- either throwIO (return . repoPrivate) repoResult
606+ archiveResult <- executeRequestMaybe mauth $
607+ archiveForR owner repo ArchiveFormatTarball (Just (untagName commit))
608+ archiveUri <- either throwIO return archiveResult
609+ hash <- getNixSha256ForUriUnpacked archiveUri
611+ { _thunkPtr_rev = ThunkRev
612+ { _thunkRev_commit = commitNameToRef commit
613+ , _thunkRev_nixSha256 = hash
1047−
615+ , _thunkPtr_source = ThunkSource_GitHub $ GitHubSource
1048− | otherwise = \mbranch -> do
616+ { _gitHubSource_owner = owner
1049− isPrivate <- getIsPrivate
617+ , _gitHubSource_repo = repo
1050− pure $ ThunkSource_Git $ GitSource
618+ , _gitHubSource_branch = branch
1051− { _gitSource_url = GitUri u
619+ , _gitHubSource_private = repoIsPrivate
1052− , _gitSource_branch = N <$> mbranch
1053− , _gitSource_fetchSubmodules = False -- TODO: How do we determine if this should be true?
1054− , _gitSource_private = isPrivate
1057− getIsPrivate = maybe (guessGitRepoIsPrivate $ GitUri u) pure mPrivate
1059−guessGitRepoIsPrivate :: MonadObelisk m => GitUri -> m Bool
1060−guessGitRepoIsPrivate uri = flip fix urisToTry $ \loop -> \case
1062− uriAttempt:xs -> do
1063− result <- readCreateProcessWithExitCode $
1070− , T.unpack $ gitUriToText uriAttempt
1073− (ExitSuccess, _, _) -> pure False -- Must be a public repo
1076− urisToTry = nubOrd $
1077− -- Include the original URI if it isn't using SSH because SSH will certainly fail.
1078− [uri | fmap URI.unRText (URI.uriScheme (unGitUri uri)) /= Just "ssh"] <>
1079− [changeScheme "https" uri, changeScheme "http" uri]
1080− changeScheme scheme (GitUri u) = GitUri $ u
1081− { URI.uriScheme = URI.mkScheme scheme
1082− , URI.uriAuthority = (\x -> x { URI.authUserInfo = Nothing }) <$> URI.uriAuthority u
1084−
622+ gitThunkPtr u _commit' _branch' = do
1085−-- Funny signature indicates no effects depend on the optional branch name.
623+ case uriScheme u of
1092−githubThunkRev s commit = do
1093− owner <- forcePP $ _gitHubSource_owner s
1094− repo <- forcePP $ _gitHubSource_repo s
1095− revTarball <- URI.mkPathPiece $ commit <> ".tar.gz"
1096− let archiveUri = GitUri $ URI.URI
1097− { URI.uriScheme = Just $ fromRight' $ URI.mkScheme "https"
1098− , URI.uriAuthority = Right $ URI.Authority
1099− { URI.authUserInfo = Nothing
1100− , URI.authHost = fromRight' $ URI.mkHost "github.com"
1101− , URI.authPort = Nothing
1103− , URI.uriPath = Just ( False
1104− , owner :| [ repo, fromRight' $ URI.mkPathPiece "archive", revTarball ]
1106− , URI.uriQuery = []
1107− , URI.uriFragment = Nothing
1109− hash <- getNixSha256ForUriUnpacked archiveUri
1110− putLog Debug $ "Nix sha256 is " <> hash
1111− return $ ThunkRev
624+ "https:" -> return ()
1112− { _thunkRev_commit = commitNameToRef $ N commit
625+ "git:" -> return ()
1113− , _thunkRev_nixSha256 = hash
1116− forcePP :: Name entity -> m (URI.RText 'URI.PathPiece)
1117− forcePP = URI.mkPathPiece . untagName
1124−gitThunkRev s commit = do
1125− let u = _gitSource_url s
1126− protocols = ["file", "https", "ssh", "git"]
1127− scheme = maybe "file" URI.unRText $ URI.uriScheme $ (\(GitUri x) -> x) u
1128− unless (T.toLower scheme `elem` protocols) $
1129− failWith $ "obelisk currently only supports "
626+ _ -> fail $ "thunk pack: obelisk currently only supports https and git protocols for non-GitHub remotes"
1130− <> T.intercalate ", " protocols <> " protocols for plain Git remotes"
627+ $notImplemented
1131− hash <- nixPrefetchGit u commit $ _gitSource_fetchSubmodules s
628+ parseSshShorthand uri' = do
1132− putLog Informational $ "Nix sha256 is " <> hash
1134− { _thunkRev_commit = commitNameToRef (N commit)
1135− , _thunkRev_nixSha256 = hash
1138−-- | Given the URI to a git remote, and an optional branch name, return the name
1139−-- of the branch along with the hash of the commit at tip of that branch.
1141−-- If the branch name is passed in, it is returned exactly as-is. If it is not
1142−-- passed it, the default branch of the repo is used instead.
1145− :: MonadObelisk m => GitUri -> Maybe Text -> m (Text, CommitId)
1146−gitGetCommitBranch uri mbranch = withExitFailMessage ("Failure for git remote " <> uriMsg) $ do
1147− (_, bothMaps) <- gitLsRemote
1148− (T.unpack $ gitUriToText uri)
1149− (GitRef_Branch <$> mbranch)
1151− branch <- case mbranch of
1152− Nothing -> withExitFailMessage "Failed to find default branch" $ do
1153− b <- rethrowE $ gitLookupDefaultBranch bothMaps
1154− putLog Debug $ "Default branch for remote repo " <> uriMsg <> " is " <> b
1157− commit <- rethrowE $ gitLookupCommitForRef bothMaps (GitRef_Branch branch)
1158− putLog Informational $ "Latest commit in branch " <> branch
1159− <> " from remote repo " <> uriMsg
1160− <> " is " <> commit
1161− pure (branch, commit)
1163− rethrowE = either failWith pure
1164− uriMsg = gitUriToText uri
1166−parseGitUri :: Text -> Maybe GitUri
1167−parseGitUri x = GitUri <$> (parseFileURI x <|> parseAbsoluteURI x <|> parseSshShorthand x)
1169−parseFileURI :: Text -> Maybe URI.URI
1170−parseFileURI uri = if "/" `T.isPrefixOf` uri then parseAbsoluteURI ("file://" <> uri) else Nothing
1172−parseAbsoluteURI :: Text -> Maybe URI.URI
1173−parseAbsoluteURI uri = do
1174− parsedUri <- URI.mkURI uri
1175− guard $ URI.isPathAbsolute parsedUri
1178−parseSshShorthand :: Text -> Maybe URI.URI
1179−parseSshShorthand uri = do
1180− -- This is what git does to check that the remote
629+ -- This is what git does to check that the remote
1181− -- is not a local file path when parsing shorthand.
630+ -- is not a local file path when parsing shorthand.
1182− -- Last referenced from here:
631+ -- Last referenced from here:
1183− -- https://github.com/git/git/blob/95ec6b1b3393eb6e26da40c565520a8db9796e9f/connect.c#L712
632+ -- https://github.com/git/git/blob/95ec6b1b3393eb6e26da40c565520a8db9796e9f/connect.c#L712
1184− let
633+ let uri = T.pack uri'
1185− (authAndHostname, colonAndPath) = T.break (== ':') uri
634+ (authAndHostname, colonAndPath) = T.break (== ':') uri
1186− properUri = "ssh://" <> authAndHostname <> "/" <> T.drop 1 colonAndPath
635+ properUri = "ssh://" <> authAndHostname <> "/" <> T.drop 1 colonAndPath
1187− -- Shorthand is valid iff a colon is present and it occurs before the first slash
636+ -- Shorthand is valid iff a colon is present and it occurs before the first slash
1188− -- This check is used to disambiguate a filepath containing a colon from shorthand
637+ -- This check is used to disambiguate a filepath containing a colon from shorthand
1189− guard $ isNothing (T.findIndex (=='/') authAndHostname)
638+ guard $ isNothing (T.findIndex (=='/') authAndHostname)
1190− && not (T.null colonAndPath)
639+ && not (T.null colonAndPath)
1191− URI.mkURI properUri
640+ parseURI $ T.unpack properUri