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| author | Joey Hess <joeyh@joeyh.name> | 2015-10-27 14:34:10 -0400 |
|---|---|---|
| committer | Joey Hess <joeyh@joeyh.name> | 2015-10-27 14:37:02 -0400 |
| commit | 56c3394144abbb9862dc67379d3253c76ae4df97 (patch) | |
| tree | 7e643b1f938343f883f6379382440516e6d3a5db /src/Propellor/Property.hs | |
| parent | 77e3a5d4d968f3567b1b8e62996e0e6c803ab642 (diff) | |
Explicit Info/NoInfo for RevertableProperty (API change)
RevertableProperty used to be assumed to contain info, but this is now made
explicit, with RevertableProperty HasInfo or RevertableProperty NoInfo.
Transition guide:
- If you define a RevertableProperty, expect some type check
failures like: "Expecting one more argument to ‘RevertableProperty’".
- Change it to "RevertableProperty NoInfo"
- The compiler will then tell you if it needs "HasInfo" instead.
- If you have code that uses the RevertableProperty constructor
that fails to type check, use the more powerful <!> operator
Diffstat (limited to 'src/Propellor/Property.hs')
| -rw-r--r-- | src/Propellor/Property.hs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/Propellor/Property.hs b/src/Propellor/Property.hs index d80d9c1f..e967cac9 100644 --- a/src/Propellor/Property.hs +++ b/src/Propellor/Property.hs @@ -201,7 +201,7 @@ withOS :: Desc -> (Maybe System -> Propellor Result) -> Property NoInfo withOS desc a = property desc $ a =<< getOS -- | Undoes the effect of a RevertableProperty. -revert :: RevertableProperty -> RevertableProperty +revert :: RevertableProperty i -> RevertableProperty i revert (RevertableProperty p1 p2) = RevertableProperty p2 p1 makeChange :: IO () -> Propellor Result |