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To index Haskell Glean consumes .hie files produced by the GHC compiler (>=8.8) with the flag -fwrite-ide-info.

Run the indexer

The indexer is run via the main glean CLI tool.

BUILD --ghc-options=-fwrite-ide-info
glean --db-root DBDIR index haskell ROOT --repo name/hash


  • BUILD is a build command such that GHC is called with -fwrite-ide-info
  • DBDIR is the directory where the Glean db will be created
  • ROOT is the root directory containing the build artifacts generated with the fwrite-ide-info flag (e.g. dist if a Cabal project)
  • name/hash is the name of the repository to create


The schema is in