Split GHC.Driver.Types

I was working on making DynFlags stateless (#17957), especially by
storing loaded plugins into HscEnv instead of DynFlags. It turned out to
be complicated because HscEnv is in GHC.Driver.Types but LoadedPlugin
isn't: it is in GHC.Driver.Plugins which depends on GHC.Driver.Types. I
didn't feel like introducing yet another hs-boot file to break the loop.

Additionally I remember that while we introduced the module hierarchy
(#13009) we talked about splitting GHC.Driver.Types because it contained
various unrelated types and functions, but we never executed. I didn't
feel like making GHC.Driver.Types bigger with more unrelated Plugins
related types, so finally I bit the bullet and split GHC.Driver.Types.

As a consequence this patch moves a lot of things. I've tried to put
them into appropriate modules but nothing is set in stone.

Several other things moved to avoid loops.

* Removed Binary instances from GHC.Utils.Binary for random compiler
  things
* Moved Typeable Binary instances into GHC.Utils.Binary.Typeable: they
  import a lot of things that users of GHC.Utils.Binary don't want to
  depend on.
* put everything related to Units/Modules under GHC.Unit:
  GHC.Unit.Finder, GHC.Unit.Module.{ModGuts,ModIface,Deps,etc.}
* Created several modules under GHC.Types: GHC.Types.Fixity, SourceText,
  etc.
* Split GHC.Utils.Error (into GHC.Types.Error)
* Finally removed GHC.Driver.Types

Note that this patch doesn't put loaded plugins into HscEnv. It's left
for another patch.

Bump haddock submodule

1 files changed, 13 insertions, 10 deletions

diff --git a/compiler/GHC/Tc/Gen/Export.hs b/compiler/GHC/Tc/Gen/Export.hs
index 9b503da19c..d5420a4027 100644
--- a/compiler/GHC/Tc/Gen/Export.hs
+++ b/compiler/GHC/Tc/Gen/Export.hs
@@ -9,7 +9,6 @@ import GHC.Prelude
 
 import GHC.Hs
 import GHC.Builtin.Names
-import GHC.Types.Name.Reader
 import GHC.Tc.Utils.Monad
 import GHC.Tc.Utils.Env
 import GHC.Tc.Utils.TcType
@@ -17,26 +16,30 @@ import GHC.Rename.Names
 import GHC.Rename.Env
 import GHC.Rename.Unbound ( reportUnboundName )
 import GHC.Utils.Error
-import GHC.Types.Id
-import GHC.Types.Id.Info
 import GHC.Unit.Module
-import GHC.Types.Name
-import GHC.Types.Name.Env
-import GHC.Types.Name.Set
-import GHC.Types.Avail
+import GHC.Unit.Module.Imported
 import GHC.Core.TyCon
-import GHC.Types.SrcLoc as SrcLoc
-import GHC.Driver.Types
 import GHC.Utils.Outputable
 import GHC.Utils.Panic
 import GHC.Core.ConLike
 import GHC.Core.DataCon
 import GHC.Core.PatSyn
 import GHC.Data.Maybe
-import GHC.Types.Unique.Set
 import GHC.Utils.Misc (capitalise)
 import GHC.Data.FastString (fsLit)
 
+import GHC.Types.Unique.Set
+import GHC.Types.SrcLoc as SrcLoc
+import GHC.Types.Name
+import GHC.Types.Name.Env
+import GHC.Types.Name.Set
+import GHC.Types.Avail
+import GHC.Types.SourceFile
+import GHC.Types.Id
+import GHC.Types.Id.Info
+import GHC.Types.TyThing
+import GHC.Types.Name.Reader
+
 import Control.Monad
 import GHC.Driver.Session
 import GHC.Parser.PostProcess ( setRdrNameSpace )