Fixing appveyor (wip)

Author: jdavid

appveyor.yml

@@ -37,7 +37,7 @@ build_script:
     set LIBGIT2=%APPVEYOR_BUILD_FOLDER%\venv
     git clone --depth=1 -b v1.8.0 https://github.com/libgit2/libgit2.git libgit2
     cd libgit2
-    cmake . -DBUILD_TESTS=OFF -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX="%LIBGIT2%" -G "%GENERATOR%"
+    cmake . -DUSE_HTTPS=ON -DBUILD_TESTS=OFF -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX="%LIBGIT2%" -G "%GENERATOR%"
     cmake --build . --target install
     cd ..
 

pygit2/callbacks.py

@@ -467,7 +467,9 @@ def _certificate_cb(cert_i, valid, host, data):
 
         # python's parsing is deep in the libraries and assumes an OpenSSL-owned cert
         val = data.certificate_check(None, bool(valid), ffi.string(host))
+        print('XXX CERTIFICATE CHECK', val)
         if not val:
+            print('XXX C.GIT_ECERTIFICATE')
             return C.GIT_ECERTIFICATE
     except Passthrough:
         if is_ssh: