From 7ce6b4fcefec5cf56e422a3072ef148424bd586b Mon Sep 17 00:00:00 2001
From: Daniel Gröber <dxld@darkboxed.org>
Date: Fri, 1 May 2020 19:53:43 +0200
Subject: Add call to addDependentFile to track TH dependencies

Cabal still doesn't really know about these depencies and will only start
GHC if it needs to rebuild for other reasons. However! Since all the files
we pull in are source files for the library anyways it all works out.
---
 src/CabalHelper/Compiletime/Data.hs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'src/CabalHelper/Compiletime/Data.hs')

diff --git a/src/CabalHelper/Compiletime/Data.hs b/src/CabalHelper/Compiletime/Data.hs
index 9586c77..8b47997 100644
--- a/src/CabalHelper/Compiletime/Data.hs
+++ b/src/CabalHelper/Compiletime/Data.hs
@@ -10,7 +10,6 @@
 --     http://www.apache.org/licenses/LICENSE-2.0
 
 {-# LANGUAGE TemplateHaskell, ScopedTypeVariables, CPP #-}
-{-# OPTIONS_GHC -fforce-recomp #-}
 
 {-|
 Module      : CabalHelper.Compiletime.Data
@@ -30,6 +29,7 @@ import qualified Data.ByteString.UTF8 as UTF8
 import qualified Data.ByteString.Lazy as LBS
 import qualified Data.ByteString.Lazy.UTF8 as LUTF8
 import Language.Haskell.TH
+import Language.Haskell.TH.Syntax (addDependentFile)
 import System.Directory
 import System.FilePath
 import System.IO.Temp
@@ -86,7 +86,9 @@ runtimeSources = $(
         , ("Shared/InterfaceTypes.hs")
         ]
   in do
-    contents <- mapM (\lf -> runIO (LBS.readFile lf)) $ map snd files
+    contents <- forM (map snd files) $ \lf -> do
+      addDependentFile lf
+      runIO (LBS.readFile lf)
     let hashes = map (bytestringDigest . sha256) contents
     let top_hash = showDigest $ sha256 $ LBS.concat hashes
 
-- 
cgit v1.2.3