Tweak layout for alternative layout rule

compiler/main/Packages.lhs

@@ -556,12 +556,12 @@ shadowPackages pkgs preferred
    in  listToFM shadowed
  where
  check (shadowed,pkgmap) pkg
-      | Just oldpkg <- lookupUFM pkgmap (packageConfigId pkg),
-        let
+      | Just oldpkg <- lookupUFM pkgmap (packageConfigId pkg)
+      , let
             ipid_new = installedPackageId pkg
-            ipid_old = installedPackageId oldpkg,
+            ipid_old = installedPackageId oldpkg
         --
-        ipid_old /= ipid_new
+      , ipid_old /= ipid_new
       = if ipid_old `elem` preferred
            then ( (ipid_new, ShadowedBy ipid_old) : shadowed, pkgmap )
            else ( (ipid_old, ShadowedBy ipid_new) : shadowed, pkgmap' )

compiler/stranal/DmdAnal.lhs

@@ -217,9 +217,9 @@ dmdAnal sigs dmd (Lam var body)
     (deferType lam_ty, Lam var' body')
 
 dmdAnal sigs dmd (Case scrut case_bndr ty [alt@(DataAlt dc,bndrs,rhs)])
-  | let tycon = dataConTyCon dc,
-    isProductTyCon tycon,
-    not (isRecursiveTyCon tycon)
+  | let tycon = dataConTyCon dc
+  , isProductTyCon tycon
+  , not (isRecursiveTyCon tycon)
   = let
 	sigs_alt	      = extendSigEnv NotTopLevel sigs case_bndr case_bndr_sig
 	(alt_ty, alt')	      = dmdAnalAlt sigs_alt dmd alt