html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/issues/1954#issuecomment-370044335,https://api.github.com/repos/pydata/xarray/issues/1954,370044335,MDEyOklzc3VlQ29tbWVudDM3MDA0NDMzNQ==,1197350,2018-03-02T20:32:59Z,2018-03-02T20:32:59Z,MEMBER,"I think you're right. Since zarr 2.2 is being released so soon, it's probably silly to add such a check.
","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,301888608
https://github.com/pydata/xarray/issues/1954#issuecomment-370042719,https://api.github.com/repos/pydata/xarray/issues/1954,370042719,MDEyOklzc3VlQ29tbWVudDM3MDA0MjcxOQ==,1197350,2018-03-02T20:26:24Z,2018-03-02T20:26:48Z,MEMBER,"@kaipak it would be great if you could put together a quick PR that would raise an error on importing zarr if the version is too old.

You would insert this around here:
https://github.com/pydata/xarray/blob/master/xarray/backends/zarr.py#L273 

The code would looks something like:
```python
from distutils.version import LooseVersion
...
import zarr
if LooseVersion(zarr.__version__) < '2.2':
    raise NotImplementedError(""Zarr version 2.2 or greater is required by xarray.  ""
       ""See zarr installation instructions at http://zarr.readthedocs.io/en/stable/#installation"")","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,301888608
https://github.com/pydata/xarray/issues/1954#issuecomment-370041032,https://api.github.com/repos/pydata/xarray/issues/1954,370041032,MDEyOklzc3VlQ29tbWVudDM3MDA0MTAzMg==,1197350,2018-03-02T20:19:40Z,2018-03-02T20:19:40Z,MEMBER,I guess we should be raising an error if zarr is too old rather than failing in this way.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,301888608
https://github.com/pydata/xarray/issues/1954#issuecomment-370037927,https://api.github.com/repos/pydata/xarray/issues/1954,370037927,MDEyOklzc3VlQ29tbWVudDM3MDAzNzkyNw==,1197350,2018-03-02T20:06:38Z,2018-03-02T20:06:38Z,MEMBER,Can you show the output of ``xr.show_versions()``?,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,301888608