try to build 64bit windows

.appveyor.yml

@@ -1,18 +1,72 @@
 environment:
-  CYG_ROOT: C:\cygwin
   CYG_MIRROR: http://cygwin.mirror.constant.com
-  CYG_CACHE: C:\cygwin\var\cache\setup
-  CYG_BASH: C:\cygwin\bin\bash
   BINTRAYAPIKEY:
     secure: uknPzww818XWJiLecwur9p1MfrkACOyx9d3iNrw/TuD89EoPSc8zLqKdPZjWdcQd
   matrix:
-    - FLAVOR: squeak.sista.spur
-    - FLAVOR: squeak.cog.spur
-    - FLAVOR: squeak.cog.v3
+    # - FLAVOR: squeak.sista.spur
+    #   ARCH: win32x86
+    #   CYG_ROOT: C:\cygwin
+    #   CYG_CACHE: C:\cygwin\var\cache\setup
+    #   CYG_BASH: C:\cygwin\bin\bash
+    #   CYG_SETUP: setup-x86.exe
+    #   CYG_ARCH: i686
+    # - FLAVOR: squeak.cog.spur
+    #   ARCH: win32x86
+    #   CYG_ROOT: C:\cygwin
+    #   CYG_CACHE: C:\cygwin\var\cache\setup
+    #   CYG_BASH: C:\cygwin\bin\bash
+    #   CYG_SETUP: setup-x86.exe
+    #   CYG_ARCH: i686
+    # - FLAVOR: squeak.cog.v3
+    #   ARCH: win32x86
+    #   CYG_ROOT: C:\cygwin
+    #   CYG_CACHE: C:\cygwin\var\cache\setup
+    #   CYG_BASH: C:\cygwin\bin\bash
+    #   CYG_SETUP: setup-x86.exe
+    #   CYG_ARCH: i686
+    # - FLAVOR: squeak.stack.spur
+    #   ARCH: win32x86
+    #   CYG_ROOT: C:\cygwin
+    #   CYG_CACHE: C:\cygwin\var\cache\setup
+    #   CYG_BASH: C:\cygwin\bin\bash
+    #   CYG_SETUP: setup-x86.exe
+    #   CYG_ARCH: i686
+    # - FLAVOR: squeak.stack.v3
+    #   ARCH: win32x86
+    #   CYG_ROOT: C:\cygwin
+    #   CYG_CACHE: C:\cygwin\var\cache\setup
+    #   CYG_BASH: C:\cygwin\bin\bash
+    #   CYG_SETUP: setup-x86.exe
+    #   CYG_ARCH: i686
+    # - FLAVOR: newspeak.cog.spur
+    #   ARCH: win32x86
+    #   CYG_ROOT: C:\cygwin
+    #   CYG_CACHE: C:\cygwin\var\cache\setup
+    #   CYG_BASH: C:\cygwin\bin\bash
+    #   CYG_SETUP: setup-x86.exe
+    #   CYG_ARCH: i686
+    # - FLAVOR: newspeak.stack.spur
+    #   ARCH: win32x86
+    #   CYG_ROOT: C:\cygwin
+    #   CYG_CACHE: C:\cygwin\var\cache\setup
+    #   CYG_BASH: C:\cygwin\bin\bash
+    #   CYG_SETUP: setup-x86.exe
+    #   CYG_ARCH: i686
+
     - FLAVOR: squeak.stack.spur
-    - FLAVOR: squeak.stack.v3
-    - FLAVOR: newspeak.cog.spur
-    - FLAVOR: newspeak.stack.spur
+      ARCH: win64x64
+      CYG_ROOT: C:\cygwin64
+      CYG_CACHE: C:\cygwin64\var\cache\setup
+      CYG_BASH: C:\cygwin64\bin\bash
+      CYG_SETUP: setup-x86_64.exe
+      CYG_ARCH: x86_64
+    # - FLAVOR: newspeak.stack.spur
+    #   ARCH: win64x64
+    #   CYG_ROOT: C:\cygwin64
+    #   CYG_CACHE: C:\cygwin64\var\cache\setup
+    #   CYG_BASH: C:\cygwin64\bin\bash
+    #   CYG_SETUP: setup-x86_64.exe
+    #   CYG_ARCH: x86_64
 
 matrix:
   fast_finish: false
@@ -24,7 +78,8 @@ clone_depth: 5
 
 install:
   - ps: 'Start-FileDownload "http://cygwin.com/setup-x86.exe" -FileName "setup-x86.exe"'
-  - 'setup-x86.exe -qnNdO -R "%CYG_ROOT%" -s "%CYG_MIRROR%" -l "%CYG_CACHE%" -P mingw64-i686-gcc-core,mingw64-i686-gcc-g++,mingw64-i686-headers,mingw64-i686-runtime,zip'
+  - ps: 'Start-FileDownload "http://cygwin.com/setup-x86_64.exe" -FileName "setup-x86_64.exe"'
+  - '%CYG_SETUP% -qnNdO -R "%CYG_ROOT%" -s "%CYG_MIRROR%" -l "%CYG_CACHE%" -P mingw64-%CYG_ARCH%-gcc-core,mingw64-%CYG_ARCH%-gcc-g++,mingw64-%CYG_ARCH%-headers,mingw64-%CYG_ARCH%-runtime,zip'
 
 build: false
 

.travis_build.sh

@@ -4,7 +4,6 @@ set -e
 source ./.travis_helpers.sh
 
 if [[ "${APPVEYOR}" ]]; then
-    ARCH="win32x86"
     TRAVIS_BUILD_DIR="$(pwd)"
     TRAVIS_TAG="${APPVEYOR_REPO_TAG}"
     PLATFORM="Windows"