Skip bzip2 if not installed

Author: TomAugspurger

appveyor.yml

@@ -78,7 +78,6 @@ install:
   - SET REQ=ci\requirements-%PYTHON_VERSION%_WIN.run
   - cmd: echo "installing requirements from %REQ%"
   - cmd: conda install -n pandas --file=%REQ%
-  - cmd: conda install bzip2  # XXX: remove when fixed in defaults
   - cmd: conda list -n pandas
   - cmd: echo "installing requirements from %REQ% - done"
 

pandas/tests/io/test_pytables.py

@@ -799,6 +799,10 @@ def test_complibs(self):
         # Remove lzo if its not available on this platform
         if not tables.which_lib_version('lzo'):
             all_complibs.remove('lzo')
+        # Remove bzip2 if its not available on this platform
+        if not tables.which_lib_version("bzip2"):
+            all_complibs.remove("bzip2")
+
         all_levels = range(0, 10)
         all_tests = [(lib, lvl) for lib in all_complibs for lvl in all_levels]