XFAIL GRDB until extension for constrainted typealiases is possible

Author: airspeedswift

projects.json

@@ -485,16 +485,18 @@
     "url": "https://github.com/groue/GRDB.swift.git",
     "path": "GRDB.swift",
     "branch": "master",
-    "compatibility": [
-      {
-        "version": "4.0",
-        "commit": "58e05d13d1e5b42c70c6dd36d64cf1a44fabbb45"
-      },
-      {
-        "version": "3.1",
-        "commit": "ba8375adb120a9c67de8cc8f420c934581a82e3b"
-      }
-    ],
+    "xfail": {
+      "compatibility": [
+        {
+          "version": "4.0",
+          "commit": "58e05d13d1e5b42c70c6dd36d64cf1a44fabbb45"
+        },
+        {
+          "version": "3.1",
+          "commit": "ba8375adb120a9c67de8cc8f420c934581a82e3b"
+        }
+      ]
+    },
     "platforms": [
       "Darwin"
     ],