Clean up rules.

src/Rules/Config.hs

@@ -7,10 +7,10 @@ configRules :: Rules ()
 configRules = do
     configPath -/- "system.config" %> \out -> do
         need [configPath -/- "system.config.in", "configure"]
-        putColoured White "Running configure..."
+        putBuild "Running configure..."
         cmd "bash configure" -- TODO: get rid of 'bash'
 
     "configure" %> \out -> do
         copyFile' (configPath -/- "configure.ac") "configure.ac"
-        putColoured White $ "Running autoconf..."
+        putBuild "Running autoconf..."
         cmd "bash autoconf" -- TODO: get rid of 'bash'

src/Rules/Dependencies.hs

@@ -26,7 +26,9 @@ buildPackageDependencies _ target =
 
         (buildPath -/- "c.deps") %> \file -> do
             srcs <- pkgDataList $ CSrcs path
-            deps <- forM srcs $ \src -> readFile' $ buildPath -/- src <.> "deps"
+            let depFiles = [ buildPath -/- src <.> "deps" | src <- srcs ]
+            need depFiles -- increase parallelism by needing all at once
+            deps <- mapM readFile' depFiles
             writeFileChanged file (concat deps)
 
         (buildPath -/- "haskell.deps") %> \file -> do

src/Util.hs

@@ -64,7 +64,6 @@ putOracle = putColoured Blue
 putBuild :: String -> Action ()
 putBuild = putColoured White
 
-
 -- A more colourful version of error
 redError :: String -> Action a
 redError msg = do