try lts-9.10 with old win32

toolchain issue is preventing nightly from building anything on windows

git-annex.cabal

@@ -380,7 +380,7 @@ Executable git-annex
     Build-Depends: network (< 2.6), network (>= 2.4)
 
   if (os(windows))
-    Build-Depends: Win32 (>= 2.5), unix-compat (>= 0.4.1.3), setenv,
+    Build-Depends: Win32 (== 2.3.1.1), Win32-extras, unix-compat (>= 0.4.1.3), setenv,
       process (>= 1.4.2.0)
   else
     Build-Depends: unix

standalone/windows/stack.yaml

@@ -21,7 +21,6 @@ extra-deps:
 - bloomfilter-2.0.1.0
 - torrent-10000.1.1
 - yesod-default-1.2.0
-- IfElse-0.85
 explicit-setup-deps:
   git-annex: true
-resolver: nightly-2017-10-22
+resolver: lts-9.10