.

wcfs/internal/pycompat/pycompat.go

+// XXX dup from neo/go/zodb/internal/pickletools
+
+package pycompat
+
+import (
+	"math/big"
+)
+
+// Int64 tries to convert unpickled Python value to int64.
+//
+// (ogórek decodes python long as big.Int)
+//
+// XXX + support for float?
+func Int64(xv interface{}) (v int64, ok bool) {
+        switch v := xv.(type) {
+        case int64:
+                return v, true
+        case *big.Int:
+                if v.IsInt64() {
+                        return v.Int64(), true
+                }
+        }
+
+        return 0, false
+}

wcfs/zblk.go

@@ -34,6 +34,8 @@ import (
 	"lab.nexedi.com/kirr/neo/go/zodb"
 	"lab.nexedi.com/kirr/neo/go/zodb/btree"
 	pickle "github.com/kisielk/og-rek"
+
+	"./internal/pycompat"
 )
 
 // module of Wendelin ZODB py objects
@@ -319,7 +321,7 @@ func (bf *zBigFileState) PySetState(pystate interface{}) (err error) {
 		return fmt.Errorf("expect [2](); got [%d]()", len(t))
 	}
 
-	blksize, ok := zodbpickle.Xint64(t[0])	// XXX reenable (pickletools)
+	blksize, ok := pycompat.Int64(t[0])
 	if !ok {
 		return fmt.Errorf("blksize: expect integer; got %T", t[0])
 	}