CI: Test direct installation via conda.

[csadorf]

Instead of just testing whether we can install into the environment
defined by environment.yaml.

[csadorf]

This shows that aiida-core cannot be installed into a Python 3.9 environment, see the test-install log:

2021-07-30T11:43:17.0115553Z python-3.8.10        | 26.2 MB   |            |   0% 
2021-07-30T11:43:17.1180013Z python-3.8.10        | 26.2 MB   | #9         |  19% 
2021-07-30T11:43:17.2667417Z python-3.8.10        | 26.2 MB   | ####4      |  44% 
2021-07-30T11:43:17.3697297Z python-3.8.10        | 26.2 MB   | ######5    |  65% 
2021-07-30T11:43:21.3715764Z python-3.8.10        | 26.2 MB   | #########7 |  97% 
2021-07-30T11:43:21.3717265Z python-3.8.10        | 26.2 MB   | ########## | 100% `

This is caused by aio-pika package which is constrained to ~6.6:

$ conda create -n aiida-py39 python=3.9 aiida-core
Collecting package metadata (current_repodata.json): \done
Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: /
Found conflicts! Looking for incompatible packages.
This can take several minutes.  Press CTRL-C to abort.
failed

UnsatisfiableError: The following specifications were found to be incompatible with each other:

Output in format: Requested package -> Available versions

Package python conflicts for:
aiida-core -> aio-pika~=6.6 -> python[version='2.7.*|3.5.*|3.6.*|>=3.6|>=3.9,<3.10.0a0|>=3|>=3.5,<3.6.0a0|=2.7|>=3.5|>=2.7|3.4.*|3.8.*|3.7.*']
python=3.9
aiida-core -> python[version='>=2.7,<2.8.0a0|>=3.5|~=3.7|>=3.6,<3.7.0a0|>=3.8,<3.9.0a0|>=3.7,<3.8.0a0']

This is odd, because the package is no-arch as of 6.7.1 which would be compatible with our constraint. Installing aio-pika in isolation works flawlessly:

conda create -n aio-pika python=3.9 aio-pika~=6.6

and will install version 6.8.

[codecov]

Codecov Report

Merging #5029 (4ccdfc1) into develop (a468519) will increase coverage by 0.01%.
The diff coverage is n/a.

❗ Current head 4ccdfc1 differs from pull request most recent head 9e220e4. Consider uploading reports for the commit 9e220e4 to get more accurate results

@@             Coverage Diff             @@
##           develop    #5029      +/-   ##
===========================================
+ Coverage    80.23%   80.23%   +0.01%     
===========================================
  Files          515      515              
  Lines        36757    36757              
===========================================
+ Hits         29489    29490       +1     
+ Misses        7268     7267       -1     

Flag	Coverage Δ
django	74.72% <ø> (ø)
sqlalchemy	73.63% <ø> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
aiida/transports/plugins/local.py	81.66% <0.00%> (+0.26%)	⬆️

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[csadorf]

I'm tracking the current failure to install with conda in combination with python=3.9 in #5037 .

[ltalirz]

could this be related to conda-forge/aiida-core-feedstock#41 ?

[ltalirz]

Thanks, for me it would be ok to test this here but as mentioned if this breaks it will need fixes in a different repo.

Also, if I understand correctly, the test would fail now - do you still want to merge this?

[ltalirz]

ah ok, I see it just installs python3.8

ok for me