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Diffstat (limited to 'src/Propellor/EnsureProperty.hs')
| -rw-r--r-- | src/Propellor/EnsureProperty.hs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/Propellor/EnsureProperty.hs b/src/Propellor/EnsureProperty.hs index c4666722..30dfd5ad 100644 --- a/src/Propellor/EnsureProperty.hs +++ b/src/Propellor/EnsureProperty.hs @@ -37,6 +37,9 @@ import Prelude -- with the property to be lost. ensureProperty :: + -- -Wredundant-constraints is turned off because + -- this constraint appears redundant, but is actually + -- crucial. ( Cannot_ensureProperty_WithInfo inner ~ 'True , (Targets inner `NotSuperset` Targets outer) ~ 'CanCombine ) @@ -45,7 +48,7 @@ ensureProperty -> Propellor Result ensureProperty _ = catchPropellor . getSatisfy --- The name of this was chosen to make type errors a more understandable. +-- The name of this was chosen to make type errors a bit more understandable. type family Cannot_ensureProperty_WithInfo (l :: [a]) :: Bool type instance Cannot_ensureProperty_WithInfo '[] = 'True type instance Cannot_ensureProperty_WithInfo (t ': ts) = |