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+module Propellor.Bootstrap (
+ buildPropellor
+) where
+
+import Propellor
+import Utility.SafeCommand
+
+import System.Posix.Files
+
+buildPropellor :: IO ()
+buildPropellor = unlessM (actionMessage "Propellor build" build) $
+ errorMessage "Propellor build failed!"
+
+-- Build propellor using cabal, and symlink propellor to where cabal
+-- leaves the built binary.
+--
+-- For speed, only runs cabal configure when it's not been run before.
+-- If the build fails cabal may need to have configure re-run.
+build :: IO Bool
+build = catchBoolIO $ do
+ make "dist/setup-config" ["propellor.cabal"] $
+ cabal ["configure"]
+ unlessM (cabal ["build"]) $ do
+ void $ cabal ["configure"]
+ unlessM (cabal ["build"]) $
+ error "cabal build failed"
+ nukeFile "propellor"
+ createSymbolicLink "dist/build/propellor-config/propellor-config" "propellor"
+ return True
+
+make :: FilePath -> [FilePath] -> IO Bool -> IO ()
+make dest srcs builder = do
+ dt <- getmtime dest
+ st <- mapM getmtime srcs
+ when (dt == Nothing || any (> dt) st) $
+ unlessM builder $
+ error $ "failed to make " ++ dest
+ where
+ getmtime = catchMaybeIO . getModificationTime
+
+cabal :: [String] -> IO Bool
+cabal = boolSystem "cabal" . map Param