fold Build/SysConfig.hs into BuildInfo via include

This avoids warnings from stack about the module not being listed in the
cabal file. So, the generated file is also renamed to Build/SysConfig.

Note that the setup program seems to be cached despite these changes; I
had to cabal clean to get cabal to update it so that Build/SysConfig was
written.

This commit was sponsored by Jochen Bartl on Patreon.

Build/BundledPrograms.hs

@@ -11,7 +11,7 @@ module Build.BundledPrograms where
 
 import Data.Maybe
 
-import Build.SysConfig as SysConfig
+import BuildInfo
 
 {- Programs that git-annex uses, to include in the bundle.
  -
@@ -28,7 +28,7 @@ extraBundledPrograms = catMaybes
 	-- integrate with the system gpg-agent, etc.
 	-- On Windows, gpg is bundled with git for windows.
 #ifndef mingw32_HOST_OS
-	[ SysConfig.gpg
+	[ BuildInfo.gpg
 #else
 	[
 #endif
@@ -75,19 +75,19 @@ preferredBundledPrograms = catMaybes
 	-- wget on OSX has been problematic, looking for certs in the wrong
 	-- places. Don't ship it, use curl or the OSX's own wget if it has
 	-- one.
-	, ifset SysConfig.wget "wget"
+	, ifset BuildInfo.wget "wget"
 #endif
 #endif
-	, SysConfig.lsof
-	, SysConfig.gcrypt
+	, BuildInfo.lsof
+	, BuildInfo.gcrypt
 #ifndef mingw32_HOST_OS
 	-- All these utilities are included in git for Windows
-	, ifset SysConfig.curl "curl"
-	, SysConfig.sha1
-	, SysConfig.sha256
-	, SysConfig.sha512
-	, SysConfig.sha224
-	, SysConfig.sha384
+	, ifset BuildInfo.curl "curl"
+	, BuildInfo.sha1
+	, BuildInfo.sha256
+	, BuildInfo.sha512
+	, BuildInfo.sha224
+	, BuildInfo.sha384
 	, Just "cp"
 #endif
 #ifdef linux_HOST_OS

Build/Configure.hs

@@ -1,4 +1,4 @@
-{- Checks system configuration and generates SysConfig.hs. -}
+{- Checks system configuration and generates SysConfig. -}
 
 {-# OPTIONS_GHC -fno-warn-tabs #-}
 

Build/TestConfig.hs

@@ -1,4 +1,4 @@
-{- Tests the system and generates Build.SysConfig.hs. -}
+{- Tests the system and generates SysConfig. -}
 
 {-# OPTIONS_GHC -fno-warn-tabs #-}
 
@@ -42,12 +42,11 @@ instance Show Config where
 		valuetype (MaybeBoolConfig _) = "Maybe Bool"
 
 writeSysConfig :: [Config] -> IO ()
-writeSysConfig config = writeFile "Build/SysConfig.hs" body
+writeSysConfig config = writeFile "Build/SysConfig" body
   where
 	body = unlines $ header ++ map show config ++ footer
 	header = [
 		  "{- Automatically generated. -}"
-		, "module Build.SysConfig where"
 		, ""
 		]
 	footer = []