From 229f9fb77b866e1c7c2b2a2e5634c5af6e00a91a Mon Sep 17 00:00:00 2001
From: Ben Gamari <ben@smart-cactus.org>
Date: Tue, 12 Jan 2021 14:26:37 -0500
Subject: hadrian: Introduce no_profiled_libs flavour transformer

Per request of @AndreasK.
---
 hadrian/doc/flavours.md | 4 ++++
 hadrian/src/Flavour.hs  | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/hadrian/doc/flavours.md b/hadrian/doc/flavours.md
index 4dac301dad..c58398844f 100644
--- a/hadrian/doc/flavours.md
+++ b/hadrian/doc/flavours.md
@@ -215,6 +215,10 @@ The supported transformers are listed below:
             default to loading static rather than dynamic library when,
             e.g., loading libraries during TemplateHaskell evaluations.</td>
     </tr>
+    <tr>
+        <td><code>no_profiled_libs</code></td>
+        <td>Disables building of libraries in profiled build ways.</td>
+    </tr>
 </table>
 
 ## Ways
diff --git a/hadrian/src/Flavour.hs b/hadrian/src/Flavour.hs
index a7a32ed634..765358c572 100644
--- a/hadrian/src/Flavour.hs
+++ b/hadrian/src/Flavour.hs
@@ -11,6 +11,7 @@ module Flavour
   , viaLlvmBackend
   , enableProfiledGhc
   , disableDynamicGhcPrograms
+  , disableProfiledLibs
   ) where
 
 import Expression
@@ -90,6 +91,7 @@ flavourTransformers = M.fromList
     , "llvm" =: viaLlvmBackend
     , "profiled_ghc" =: enableProfiledGhc
     , "no_dynamic_ghc" =: disableDynamicGhcPrograms
+    , "no_profiled_libs" =: disableProfiledLibs
     ]
   where (=:) = (,)
 
@@ -211,3 +213,8 @@ enableProfiledGhc flavour = flavour { ghcProfiled = True }
 -- | Disable 'dynamicGhcPrograms'.
 disableDynamicGhcPrograms :: Flavour -> Flavour
 disableDynamicGhcPrograms flavour = flavour { dynamicGhcPrograms = pure False }
+
+-- | Don't build libraries in profiled 'Way's.
+disableProfiledLibs :: Flavour -> Flavour
+disableProfiledLibs flavour =
+    flavour { libraryWays = filter (not . wayUnit Profiling) <$> libraryWays flavour }
-- 
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