Bump unix submodule to 2.8.0.0

Also bumps process and ghc-boot bounds on unix.

For hadrian, when cross-compiling, we add -Wwarn=unused-imports
-Wwarn=unused-top-binds to validation flavour. Further fixes in unix
and/or hsc2hs is needed to make it completely free of warnings; for
the time being, this change is needed to unblock other
cross-compilation related work.

5 files changed, 9 insertions, 4 deletions

diff --git a/hadrian/src/Flavour.hs b/hadrian/src/Flavour.hs
index 46a1ef7d23..88ce819147 100644
--- a/hadrian/src/Flavour.hs
+++ b/hadrian/src/Flavour.hs
@@ -33,6 +33,7 @@ import Text.Parsec.Combinator as P
 import Text.Parsec.Char as P
 import Control.Monad.Except
 import UserSettings
+import Oracles.Flag
 import Oracles.Setting
 
 
@@ -106,8 +107,13 @@ addArgs args' fl = fl { args = args fl <> args' }
 
 -- | Turn on -Werror for packages built with the stage1 compiler.
 -- It mimics the CI settings so is useful to turn on when developing.
+
+-- TODO: the -Wwarn flags are added to make validation flavour works
+-- for cross-compiling unix-2.8.0.0. There needs to be further fixes
+-- in unix and/or hsc2hs to make cross-compiling unix completely free
+-- from warnings.
 werror :: Flavour -> Flavour
-werror = addArgs (builder Ghc ? notStage0 ? arg "-Werror")
+werror = addArgs (builder Ghc ? notStage0 ? mconcat [arg "-Werror", flag CrossCompiling ? mconcat [arg "-Wwarn=unused-imports", arg "-Wwarn=unused-top-binds"]])
 
 -- | Build C and Haskell objects with debugging information.
 enableDebugInfo :: Flavour -> Flavour
diff --git a/libraries/base/tests/T7773.hs b/libraries/base/tests/T7773.hs
index 13ec40dadf..17502c4b31 100644
--- a/libraries/base/tests/T7773.hs
+++ b/libraries/base/tests/T7773.hs
@@ -3,7 +3,6 @@ import System.Posix.IO
 
 main = do
   putStrLn "hello"
-  fd <- openFd "/dev/random" ReadOnly Nothing defaultFileFlags
+  fd <- openFd "/dev/random" ReadOnly defaultFileFlags
   threadWaitRead fd
   putStrLn "goodbye"
-
diff --git a/libraries/ghc-boot/ghc-boot.cabal.in b/libraries/ghc-boot/ghc-boot.cabal.in
index 59ed7ae317..4a35fbf682 100644
--- a/libraries/ghc-boot/ghc-boot.cabal.in
+++ b/libraries/ghc-boot/ghc-boot.cabal.in
@@ -80,4 +80,4 @@ Library
                    ghc-boot-th == @ProjectVersionMunged@
     if !os(windows)
         build-depends:
-                   unix       >= 2.7 && < 2.8
+                   unix       >= 2.7 && < 2.9
diff --git a/libraries/process b/libraries/process
-Subproject 2ac3ff366631a36d84101000045abbefa4415b1
+Subproject cb89d5079d29c38683bcb6feec7dc53ad3836ed
diff --git a/libraries/unix b/libraries/unix
-Subproject 2a6079a2b76adf29d3e3ff213dffe66cabcb76c
+Subproject 3be0223cee7395410915a127eba3acae5ff0b2f