From 77afb51613df5777582627e8c505fde57b0be188 Mon Sep 17 00:00:00 2001
From: Daniel Gröber <dxld@darkboxed.org>
Date: Mon, 25 Sep 2017 11:10:25 +0200
Subject: Add support for running Cabal's Setup.hs directly

cabal-install 1.24 broke installing older Cabal versions which use
build-type:custom. See https://github.com/haskell/cabal/pull/4787.

This still breaks with HEAD on GHC<8. See
https://github.com/haskell/cabal/pull/4786.
---
 CabalHelper/Shared/Common.hs | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'CabalHelper/Shared')

diff --git a/CabalHelper/Shared/Common.hs b/CabalHelper/Shared/Common.hs
index 588cd03..b4c9e46 100644
--- a/CabalHelper/Shared/Common.hs
+++ b/CabalHelper/Shared/Common.hs
@@ -42,6 +42,9 @@ instance Exception Panic
 panic :: String -> a
 panic msg = throw $ Panic msg
 
+panicIO :: String -> IO a
+panicIO msg = throwIO $ Panic msg
+
 handlePanic :: IO a -> IO a
 handlePanic action =
     action `E.catch` \(Panic msg) -> errMsg msg >> exitFailure
-- 
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