Remove astropy-ci-extras from the default conda channels

[bsipocz]

This is a workaround for currently failing tests in astropy (e.g. astropy/astropy#5094), a place for discussion for long term solution is in #98.

[Edit] - The PR also manually adds the defaults conda channel, for details see conda/conda#2675

[astrofrog]

Another solution is to add defaults explicitly - I think we are running into conda/conda#2675

[larrybradley]

The travis-ci tests are still failing for the numpy 1.7 and 1.8 tests because conda is installing astropy 0.3.0 (!) for those tests.

[astrofrog]

Can we pin the version of conda used?

[bsipocz]

what you mean @astrofrog? anaconda doesn't build new versions against old numpies, this the old ones are stucked with the astropy version of the time when they were new.
gitter?

[larrybradley]

Can conda downgrade itself?

The other option would be if old versions of miniconda are still available for download and then not run conda update conda after installation.

[astrofrog]

I'm thinking that the issues we are seeing today are a conda bug, so I'm just wondering whether we can revert to an earlier version of conda.

[astrofrog]

By the way, looks like SunPy are having issues too: https://travis-ci.org/sunpy/sunpy/jobs/137763718 - though I've asked @Cadair to restart that to see.

[astrofrog]

@larrybradley - I think conda can downgrade itself, yes.

[bsipocz]

I believe that the conda bug was solved with adding the defaults to the channels. The issue now is coming from the fact that we removed astropy-ci-extras.

This is the list of the available astropy versions on conda:

(astropy-dev)bsipocz@tegla2:~/munka/devel/ci-helpers$ ~/miniconda/bin/conda search astropy|grep np18
Could not connect to https://conda.binstar.org/astrofrog/osx-64/
Could not connect to https://conda.binstar.org/astropy/osx-64/
                             0.3.0                np18py33_0  defaults        
                             0.3.0                np18py27_0  defaults        
                             0.3.0                np18py26_0  defaults        
                             0.3.1                np18py33_0  defaults        
                             0.3.1                np18py27_0  defaults        
                             0.3.1                np18py26_0  defaults        
                             0.3.2                np18py34_0  defaults        
                             0.3.2                np18py33_0  defaults        
                             0.3.2                np18py27_0  defaults        
                             0.3.2                np18py26_0  defaults        
                             0.4rc1               np18py34_0  defaults        
                             0.4rc1               np18py33_0  defaults        
                             0.4rc1               np18py27_0  defaults        
                             0.4rc1               np18py26_0  defaults        
                             0.4                  np18py34_0  defaults        
                             0.4                  np18py33_0  defaults        
                             0.4                  np18py27_0  defaults        
                             0.4                  np18py26_0  defaults        
                             0.4.1                np18py34_0  defaults        
                             0.4.1                np18py33_0  defaults        
                             0.4.1                np18py27_0  defaults        
                             0.4.1                np18py26_0  defaults   

[astrofrog]

Ok - I think we should add back astropy-ci-helpers for now and we might be back to normal? Then we can try and phase it out more gradually?

[bsipocz]

Yes, that's a sensible workaround.

[astrofrog]

By the way, I wonder if as ci-helpers gets adopted by more projects, we need either a twitter account or a simple status page so that if people are running into issues, they can see if we are working on it?

[bsipocz]

Maybe. Though I would go to the issue tracker first when trying to figure out such info rather than to twitter.