uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/haskell-modules/patches/darcs-setup.patch

@@ -0,0 +1,120 @@
+--- darcs-2.14.2/Setup.hs	2019-01-27 03:14:51.000000000 +1300
++++ darcs.net/Setup.hs	2019-10-18 02:41:57.000000000 +1300
+@@ -11,7 +11,9 @@
+          , TestSuite(testBuildInfo)
+          , updatePackageDescription
+          , cppOptions, ccOptions
+-         , library, libBuildInfo, otherModules )
++         , library, libBuildInfo, otherModules
++         , ComponentName(CExeName)
++         )
+ import Distribution.Package
+          ( packageVersion )
+ import Distribution.Version( Version )
+@@ -21,24 +23,27 @@
+ import Distribution.Simple.Setup
+     (buildVerbosity, copyDest, copyVerbosity, fromFlag,
+      haddockVerbosity, installVerbosity, sDistVerbosity, replVerbosity )
+-import Distribution.Simple.BuildPaths ( autogenModulesDir )
++import Distribution.Simple.BuildPaths ( autogenPackageModulesDir )
+ import Distribution.System
+          ( OS(Windows), buildOS )
+ import Distribution.Simple.Utils
+     (copyFiles, createDirectoryIfMissingVerbose, rawSystemStdout,
+-     rewriteFile )
++     rewriteFileEx)
++import Distribution.Types.UnqualComponentName
+ import Distribution.Verbosity
+-         ( Verbosity )
++         ( Verbosity, silent )
+ import Distribution.Text
+          ( display )
+-import Control.Monad ( unless, void )
+ 
++import Control.Monad ( unless, when, void )
+ import System.Directory
+     ( doesDirectoryExist, doesFileExist )
+ import System.IO
+     ( openFile, IOMode(..) )
+ import System.Process (runProcess)
+ import Data.List( isInfixOf, lines )
++import qualified Data.Map as M
++import Data.Maybe ( isJust )
+ import System.FilePath       ( (</>) )
+ import Foreign.Marshal.Utils ( with )
+ import Foreign.Storable      ( peek )
+@@ -75,8 +80,8 @@
+         verb = fromFlag $ sDistVerbosity flags
+     x <- versionPatches verb pkgVer
+     y <- context verb
+-    rewriteFile "release/distributed-version" $ show x
+-    rewriteFile "release/distributed-context" $ show y
++    rewriteFileEx silent "release/distributed-version" $ show x
++    rewriteFileEx silent "release/distributed-context" $ show y
+     putStrLn "about to hand over"
+     let pkg' = pkg { library = sanity (library pkg) }
+         sanity (Just lib) = Just $ lib { libBuildInfo = sanity' $ libBuildInfo lib }
+@@ -105,8 +110,7 @@
+   littleEndian <- testEndianness
+   let args = ("-DPACKAGE_VERSION=" ++ show' version) :
+              [arg | (arg, True) <-         -- include fst iff snd.
+-              [-- We have MAPI iff building on/for Windows.
+-               ("-DHAVE_MAPI", buildOS == Windows),
++              [
+                ("-DLITTLEENDIAN", littleEndian),
+                ("-DBIGENDIAN", not littleEndian)]]
+       bi = emptyBuildInfo { cppOptions = args, ccOptions = args }
+@@ -133,20 +137,26 @@
+ -- man page
+ -- ---------------------------------------------------------------------
+ 
++hasDarcsExe :: LocalBuildInfo -> Bool
++hasDarcsExe = isJust . M.lookup darcsExe . componentNameMap where
++  darcsExe = CExeName (mkUnqualComponentName "darcs")
++
+ buildManpage :: LocalBuildInfo -> IO ()
+-buildManpage lbi = do
+-  let darcs = buildDir lbi </> "darcs/darcs"
+-      manpage = buildDir lbi </> "darcs/darcs.1"
+-  manpageHandle <- openFile manpage WriteMode
+-  void $ runProcess darcs ["help","manpage"]
+-             Nothing Nothing Nothing (Just manpageHandle) Nothing
++buildManpage lbi =
++  when (hasDarcsExe lbi) $ do
++    let darcs = buildDir lbi </> "darcs/darcs"
++        manpage = buildDir lbi </> "darcs/darcs.1"
++    manpageHandle <- openFile manpage WriteMode
++    void $ runProcess darcs ["help","manpage"]
++            Nothing Nothing Nothing (Just manpageHandle) Nothing
+ 
+-installManpage :: PackageDescription -> LocalBuildInfo
+-                  -> Verbosity -> CopyDest -> IO ()
++installManpage :: PackageDescription -> LocalBuildInfo -> Verbosity -> CopyDest -> IO ()
+ installManpage pkg lbi verbosity copy =
+-    copyFiles verbosity
+-              (mandir (absoluteInstallDirs pkg lbi copy) </> "man1")
+-              [(buildDir lbi </> "darcs", "darcs.1")]
++  when (hasDarcsExe lbi) $
++    copyFiles
++      verbosity
++      (mandir (absoluteInstallDirs pkg lbi copy) </> "man1")
++      [(buildDir lbi </> "darcs", "darcs.1")]
+ 
+ -- ---------------------------------------------------------------------
+ -- version module
+@@ -187,12 +197,13 @@
+ generateVersionModule :: Verbosity -> LocalBuildInfo
+                       -> String -> String -> IO ()
+ generateVersionModule verbosity lbi version state = do
+-  let dir = autogenModulesDir lbi
++  let dir = autogenPackageModulesDir lbi
+   createDirectoryIfMissingVerbose verbosity True dir
+   ctx <- context verbosity
+   hash <- weakhash verbosity
+-  rewriteFile (dir </> "Version.hs") $ unlines
++  rewriteFileEx silent (dir </> "Version.hs") $ unlines
+     ["module Version where"
++    ,"import Darcs.Prelude"
+     ,"version, weakhash, context :: String"
+     ,"version = \"" ++ version ++ " (" ++ state ++ ")\""
+     ,"weakhash = " ++ case hash of