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1. readPackageDbForGhc :: FilePath -> IO [DbUnitInfo]

   ghc-boot	GHC.Unit.Database

   Read the part of the package DB that GHC is interested in.

2. readPackageDbForGhcPkg :: forall pkgs (mode :: DbMode) t . Binary pkgs => FilePath -> DbOpenMode mode t -> IO (pkgs, DbOpenMode mode PackageDbLock)

   ghc-boot	GHC.Unit.Database

   Read the part of the package DB that ghc-pkg is interested in Note that the Binary instance for ghc-pkg's representation of packages is not defined in this package. This is because ghc-pkg uses Cabal types (and Binary instances for these) which this package does not depend on. If we open the package db in read only mode, we get its contents. Otherwise we additionally receive a PackageDbLock that represents a lock on the database, so that we can safely update it later.

3. readFileBS :: MonadIO m => FilePath -> m ByteString

   relude	Relude.File

   Lifted version of readFile.

4. readFileLBS :: MonadIO m => FilePath -> m LByteString

   relude	Relude.File

   Lifted version of readFile.

5. readFileLText :: MonadIO m => FilePath -> m LText

   relude	Relude.File

   Warning: readFileLText depends on the system's locale settings and can throw unexpected exceptions.Use readFileLBS instead.

6. readFileText :: MonadIO m => FilePath -> m Text

   relude	Relude.File

   Warning: readFileText depends on the system's locale settings and can throw unexpected exceptions.Use readFileBS instead.

7. readMVar :: MonadIO m => MVar a -> m a

   relude	Relude.Lifted.Concurrent

   Lifted to MonadIO version of readMVar.

8. readTMVar :: TMVar a -> STM a

   relude	Relude.Lifted.Concurrent

   This is a combination of takeTMVar and putTMVar; ie. it takes the value from the TMVar, puts it back, and also returns it.

9. readTVar :: TVar a -> STM a

   relude	Relude.Lifted.Concurrent

   Return the current value stored in a TVar.

10. readTVarIO :: MonadIO m => TVar a -> m a

    relude	Relude.Lifted.Concurrent

    Lifted to MonadIO version of readTVarIO.

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