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| author | Joey Hess <joeyh@joeyh.name> | 2015-09-02 14:03:11 -0700 |
|---|---|---|
| committer | Joey Hess <joeyh@joeyh.name> | 2015-09-02 14:03:11 -0700 |
| commit | ef0fe77e7123949ed5a1ebe922bde93044bd9e38 (patch) | |
| tree | 9b1d7549b9548d6dc58745c7315a8b91f9f5c30e /src | |
| parent | 2a645cc290faa82e3f763f3ced0ebaa68226351e (diff) | |
docs
Diffstat (limited to 'src')
| -rw-r--r-- | src/Propellor/Info.hs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/Propellor/Info.hs b/src/Propellor/Info.hs index f1f23b96..0eea0816 100644 --- a/src/Propellor/Info.hs +++ b/src/Propellor/Info.hs @@ -18,10 +18,15 @@ pureInfoProperty desc i = infoProperty ("has " ++ desc) (return NoChange) i memp askInfo :: (Info -> Val a) -> Propellor (Maybe a) askInfo f = asks (fromVal . f . hostInfo) +-- | Specifies the operating system of a host. +-- +-- This only provides info for other Properties, so they can act +-- conditional on the os. os :: System -> Property HasInfo os system = pureInfoProperty ("Operating " ++ show system) $ mempty { _os = Val system } +-- Gets the operating system of a host, if it has been specified. getOS :: Propellor (Maybe System) getOS = askInfo _os |