1 files changed, 64 insertions, 0 deletions
diff --git a/src/UserSettings.hs b/src/UserSettings.hs
new file mode 100644
index 0000000000..1b7c3f8bdd
--- /dev/null
+++ b/src/UserSettings.hs
@@ -0,0 +1,64 @@
+-- If you want to customise your build you should copy this file from
+-- hadrian/src/UserSettings.hs to hadrian/UserSettings.hs and edit your copy.
+-- If you don't copy the file your changes will be tracked by git and you can
+-- accidentally commit them.
+module UserSettings (
+    userBuildRoot, userFlavours, userPackages, verboseCommand,
+    buildProgressColour, successColour, stage1Only
+    ) where
+
+import Hadrian.Utilities
+import System.Console.ANSI
+
+import Flavour
+import Expression
+import {-# SOURCE #-} Settings.Default
+
+-- See doc/user-settings.md for instructions.
+-- Please update doc/user-settings.md when committing changes to this file.
+
+-- | All build results are put into the 'buildRoot' directory.
+userBuildRoot :: BuildRoot
+userBuildRoot = BuildRoot "_build"
+
+-- | User-defined build flavours. See 'userFlavour' as an example.
+userFlavours :: [Flavour]
+userFlavours = [userFlavour] -- Add more build flavours if need be.
+
+-- | This is an example user-defined build flavour. Feel free to modify it and
+-- use by passing @--flavour=user@ from the command line.
+userFlavour :: Flavour
+userFlavour = defaultFlavour { name = "user" } -- Modify other settings here.
+
+-- | Add user-defined packages. Note, this only lets Hadrian know about the
+-- existence of a new package; to actually build it you need to create a new
+-- build flavour, modifying the list of packages that are built by default.
+userPackages :: [Package]
+userPackages = []
+
+-- | Set to 'True' to print full command lines during the build process. Note:
+-- this is a 'Predicate', hence you can enable verbose output only for certain
+-- targets, e.g.: @verboseCommand = package ghcPrim@.
+verboseCommand :: Predicate
+verboseCommand = do
+    verbosity <- expr getVerbosity
+    return $ verbosity >= Loud
+
+-- | Set colour for build progress messages (e.g. executing a build command).
+buildProgressColour :: BuildProgressColour
+buildProgressColour = BuildProgressColour (Dull, Magenta)
+
+-- | Set colour for success messages (e.g. a package is built successfully).
+successColour :: SuccessColour
+successColour = SuccessColour (Dull, Green)
+
+-- TODO: Set this flag from the command line.
+-- | Set this flag to 'True' to disable building Stage2 GHC (i.e. the @ghc-stage2@
+-- executable) and Stage2 utilities (such as @haddock@). Note that all Stage0
+-- and Stage1 libraries (including 'compiler') will still be built. Enabling
+-- this flag during installation leads to installing @ghc-stage1@ instead of
+-- @ghc-stage2@, and @ghc-pkg@ that was build with the Stage0 compiler.
+-- Also see Note [No stage2 packages when CrossCompiling or Stage1Only] in the
+-- top-level @ghc.mk@.
+stage1Only :: Bool
+stage1Only = False