Finding explicit imports for ghc's -Wmissing-import-lists

Question

GHC generates warnings when there are implicit imports (see below). The goal is to replace these with explicit imports. Is there an automated way to generated the list (instead of manually finding it in code)?

/Users/srid/code/slownews/backend/src/SlowNews/Main.hs:10:1: warning: [-Wmissing-import-lists]
    The module ‘Control.Exception’ does not have an explicit import list
   |
10 | import           Control.Exception
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/Users/srid/code/slownews/backend/src/SlowNews/Main.hs:13:1: warning: [-Wmissing-import-lists]
    The module ‘Control.Monad.IO.Class’ does not have an explicit import list
   |
13 | import           Control.Monad.IO.Class
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Answer 1

GHC has a -ddump-minimal-imports flag which will do the trick.

Answer 2

There's an open pull request un importify tool which I'm working on. After this is done you will be able to convert implicit imports to explicit automatically:

https://github.com/serokell/importify/pull/82