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, 12 insertions, 12 deletions

diff --git a/compiler/GHC/SysTools/Tasks.hs b/compiler/GHC/SysTools/Tasks.hs
index 7dc40cef04..4e78f52f34 100644
--- a/compiler/GHC/SysTools/Tasks.hs
+++ b/compiler/GHC/SysTools/Tasks.hs
@@ -9,26 +9,26 @@
 -----------------------------------------------------------------------------
 module GHC.SysTools.Tasks where
 
-import GHC.Utils.Exception as Exception
-import GHC.Utils.Error
-import GHC.Driver.Types
-import GHC.Driver.Session
-import GHC.Utils.Outputable
-import GHC.Platform
-import GHC.Utils.Misc
-
-import Data.List
-
-import System.IO
-import System.Process
 import GHC.Prelude
+import GHC.Platform
+import GHC.ForeignSrcLang
 
 import GHC.CmmToLlvm.Base (LlvmVersion, llvmVersionStr, supportedLlvmVersion, parseLlvmVersion)
 
 import GHC.SysTools.Process
 import GHC.SysTools.Info
 
+import GHC.Driver.Session
+
+import GHC.Utils.Exception as Exception
+import GHC.Utils.Error
+import GHC.Utils.Outputable
+import GHC.Utils.Misc
+
+import Data.List
 import Control.Monad (join, forM, filterM)
+import System.IO
+import System.Process
 import System.Directory (doesFileExist)
 import System.FilePath ((</>))