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authorDaniel Gröber <dxld@darkboxed.org>2017-09-25 11:10:25 +0200
committerDaniel Gröber <dxld@darkboxed.org>2017-09-25 13:11:28 +0200
commit77afb51613df5777582627e8c505fde57b0be188 (patch)
tree4fa0da681316b42286ef888ed6ab1a781867933c /CabalHelper/Shared
parentb42f9095993f5862d4450a84f6cf535b7a252d48 (diff)
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.
Diffstat (limited to 'CabalHelper/Shared')
-rw-r--r--CabalHelper/Shared/Common.hs3
1 files changed, 3 insertions, 0 deletions
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