Add version string

[paskino]

adds the version string accessible from python as

import cil
from cil import version

print (cil.version.version)

>>> 'v21.1.0-15-g449cdaa'

Version is determined by git describe both by CMake and conda.

[gfardell]

I like it :)

[gfardell]

I guess Jenkins versions are redundant once this is merged? and we should do the same for CIL-astra

[paskino]

I just tried on my machine and conda fails miserably

conda build recipe/ --python=3.7 --numpy=1.18 -c conda-forge -c astra/label/dev/ -c ccpi
Adding in variants from internal_defaults
INFO:conda_build.variants:Adding in variants from internal_defaults
Adding in variants from /mnt/data/CCPi/code/CIL/recipe/conda_build_config.yaml
INFO:conda_build.variants:Adding in variants from /mnt/data/CCPi/code/CIL/recipe/conda_build_config.yaml
Adding in variants from config.variant
INFO:conda_build.variants:Adding in variants from config.variant
No numpy version specified in conda_build_config.yaml.  Falling back to default numpy value of 1.11
WARNING:conda_build.metadata:No numpy version specified in conda_build_config.yaml.  Falling back to default numpy value of 1.11
Attempting to finalize metadata for cil
INFO:conda_build.metadata:Attempting to finalize metadata for cil
Error: Failed to render jinja template in /mnt/data/CCPi/code/CIL/recipe/meta.yaml:
'GIT_DESCRIBE_TAG' is undefined

[paskino]

From: https://docs.conda.io/projects/conda-build/en/stable/user-guide/environment-variables.html#git-environment-variables

The environment variables listed in the following table are defined when the source is a git repository, specifying the source either with git_url or path.

So the recipe needs to have path defined.

Also look here

[paskino]

Jenkins fails at test phase trying to install cuda 11.2:

TEST START: /home/jenkins/conda-bld/linux-64/cil-v21.1.0-np115py36_0.tar.bz2
Adding in variants from /tmp/tmp0gv6j2wh/info/recipe/conda_build_config.yaml
INFO:conda_build.variants:Adding in variants from /tmp/tmp0gv6j2wh/info/recipe/conda_build_config.yaml
INFO conda_build.variants:_combine_spec_dictionaries(188): Adding in variants from /tmp/tmp0gv6j2wh/info/recipe/conda_build_config.yaml
Renaming work directory,  /home/jenkins/conda-bld/cil_1621633695969/work  to  /home/jenkins/conda-bld/cil_1621633695969/work_moved_cil-v21.1.0-np115py36_0_linux-64
Collecting package metadata (repodata.json): ...working... done
Solving environment: ...working... WARNING:conda.models.version:Using .* with relational operator is superfluous and deprecated and will be removed in a future version of conda. Your spec was 1.*, but conda is ignoring the .* and treating it as 1

[ ... ] strip similar WARNINGS

Examining conflict for matplotlib scikit-image numba: : 42it [05:05,  2.23s/it]
Examining conflict for __glibc cil-astra: : 42it [05:13,  2.23s/it]            
Examining conflict for __glibc cil-astra: : 43it [05:13,  3.87s/it]
Examining conflict for __cuda: : 43it [05:13,  3.87s/it]           
Examining conflict for __cuda: : 44it [05:13,  2.77s/it]
                                                        
Found conflicts! Looking for incompatible packages.
This can take several minutes.  Press CTRL-C to abort.
failed

failed to get install actions, retrying.  
exception was: Unsatisfiable dependencies for platform linux-64: {'feature:|@/linux-64::__cuda==11.2=0', 'feature:/linux-64::__cuda==11.2=0'}

WARNING:conda_build.build:failed to get install actions, retrying.  
exception was: Unsatisfiable dependencies for platform linux-64: {'feature:|@/linux-64::__cuda==11.2=0', 'feature:/linux-64::__cuda==11.2=0'}

WARNING conda_build.build:test(2144): failed to get install actions, retrying.  
exception was: Unsatisfiable dependencies for platform linux-64: {'feature:|@/linux-64::__cuda==11.2=0', 'feature:/linux-64::__cuda==11.2=0'}

Tests failed for cil-v21.1.0-np115py36_0.tar.bz2 - moving package to /home/jenkins/conda-bld/broken

WARNING:conda_build.build:Tests failed for cil-v21.1.0-np115py36_0.tar.bz2 - moving package to /home/jenkins/conda-bld/broken

WARNING conda_build.build:tests_failed(2231): Tests failed for cil-v21.1.0-np115py36_0.tar.bz2 - moving package to /home/jenkins/conda-bld/broken
TESTS FAILED: cil-v21.1.0-np115py36_0.tar.bz2

A previous Jenkins build (2011) selected 9.2 rather than 11.2.