[AppVeyor] package source before everything else

appveyor.yml

@@ -23,6 +23,8 @@ cache:
 
 install:
     - 'git submodule update --init --recursive'
+    - '%CYG_ROOT%/bin/bash -lc "echo initialize"'
+    - '%CYG_ROOT%/bin/bash -lc "cd \"$OLDPWD\" && make -s -f Makefile.win package_src"'
     # Install ocaml
     - curl -fsS -o cygwin-setup.exe --retry 3 https://cygwin.com/setup-x86.exe
     - 'cygwin-setup.exe -g -q -R "%CYG_ROOT%" -P make -P git -P mingw64-i686-zlib -P rsync -P patch -P diffutils -P curl -P unzip -P m4 -P perl -P mingw64-i686-gcc-core -P mingw64-i686-pcre'
@@ -30,7 +32,6 @@ install:
         curl -fsS -o opam32.tar.xz --retry 3 https://dl.dropboxusercontent.com/s/eo4igttab8ipyle/opam32.tar.xz
       )
     - 7z x "opam32.tar.xz" -so | 7z x -aoa -si -ttar
-    - '%CYG_ROOT%/bin/bash -lc "echo initialize"'
     - '%CYG_ROOT%/bin/bash -lc "cd \"$OLDPWD\" && bash opam32/install.sh"'
     - '%CYG_ROOT%/bin/bash -lc "opam init mingw \"https://github.com/fdopen/opam-repository-mingw.git\" --comp 4.02.3+mingw32c --switch 4.02.3+mingw32c --auto-setup --yes"'
     - '%CYG_ROOT%/bin/bash -lc "opam install camlp4 --yes"'
@@ -50,7 +51,6 @@ install:
 
 build_script:
     - 'cd %APPVEYOR_BUILD_FOLDER%'
-    - '%CYG_ROOT%/bin/bash -lc "cd \"$OLDPWD\" && make -s -f Makefile.win package_src"'
     - '%CYG_ROOT%/bin/bash -lc "cd \"$OLDPWD\" && make -s -f Makefile.win"'
     - 'set PATH=%PATH%;%APPVEYOR_BUILD_FOLDER%'
     - 'set HAXEPATH=%APPVEYOR_BUILD_FOLDER%'