summaryrefslogtreecommitdiff
path: root/compiler/GHC/Stg/Subst.hs
diff options
context:
space:
mode:
Diffstat (limited to 'compiler/GHC/Stg/Subst.hs')
-rw-r--r--compiler/GHC/Stg/Subst.hs4
1 files changed, 4 insertions, 0 deletions
diff --git a/compiler/GHC/Stg/Subst.hs b/compiler/GHC/Stg/Subst.hs
index ba3550b330..dce2859262 100644
--- a/compiler/GHC/Stg/Subst.hs
+++ b/compiler/GHC/Stg/Subst.hs
@@ -9,8 +9,12 @@ import GHC.Prelude
import GHC.Types.Id
import GHC.Types.Var.Env
import Control.Monad.Trans.State.Strict
+
import GHC.Utils.Outputable
import GHC.Utils.Misc
+import GHC.Utils.Panic
+
+import GHC.Driver.Ppr
-- | A renaming substitution from 'Id's to 'Id's. Like 'RnEnv2', but not
-- maintaining pairs of substitutions. Like 'GHC.Core.Subst.Subst', but