When will dcmstack be validated to work with python 3.8?

[mick-d]

Issue: I cannot install dcmstack in a clean environment based on python 3.8. The issue seems obvious: dcmstack is not available for python 3.8 in conda.

I still put all the information below (where you can see the UnsatisfiableError: (...) [dcmstack] found to be incompatible with [python 3.8], dcmstack -> python[version='2.7.*|>=3.6,<3.7.0a0|>=3.7,<3.8.0a0']).

So the question is: when will dcmstack be available for python 3.8 with the current version limitation updated? This would be particularly useful notably for heudiconv (cf this issue comment).

conda create -n heuditest38 python=3.8

Collecting package metadata (current_repodata.json): done
Solving environment: done

## Package Plan ##

  environment location: /opt/conda/shared/envs/heuditest38

  added / updated specs:
    - python=3.8


The following NEW packages will be INSTALLED:

  _libgcc_mutex      conda-forge/linux-64::_libgcc_mutex-0.1-conda_forge
  _openmp_mutex      conda-forge/linux-64::_openmp_mutex-4.5-0_gnu
  ca-certificates    conda-forge/linux-64::ca-certificates-2020.4.5.1-hecc5488_0
  certifi            conda-forge/linux-64::certifi-2020.4.5.1-py38h32f6830_0
  ld_impl_linux-64   conda-forge/linux-64::ld_impl_linux-64-2.34-h53a641e_0
  libffi             conda-forge/linux-64::libffi-3.2.1-he1b5a44_1007
  libgcc-ng          conda-forge/linux-64::libgcc-ng-9.2.0-h24d8f2e_2
  libgomp            conda-forge/linux-64::libgomp-9.2.0-h24d8f2e_2
  libstdcxx-ng       conda-forge/linux-64::libstdcxx-ng-9.2.0-hdf63c60_2
  ncurses            conda-forge/linux-64::ncurses-6.1-hf484d3e_1002
  openssl            conda-forge/linux-64::openssl-1.1.1g-h516909a_0
  pip                conda-forge/noarch::pip-20.1-pyh9f0ad1d_0
  python             conda-forge/linux-64::python-3.8.2-he5300dc_7_cpython
  python_abi         conda-forge/linux-64::python_abi-3.8-1_cp38
  readline           conda-forge/linux-64::readline-8.0-hf8c457e_0
  setuptools         conda-forge/linux-64::setuptools-46.3.0-py38h32f6830_0
  sqlite             conda-forge/linux-64::sqlite-3.30.1-hcee41ef_0
  tk                 conda-forge/linux-64::tk-8.6.10-hed695b0_0
  wheel              conda-forge/noarch::wheel-0.34.2-py_1
  xz                 conda-forge/linux-64::xz-5.2.5-h516909a_0
  zlib               conda-forge/linux-64::zlib-1.2.11-h516909a_1006


Proceed ([y]/n)? y

Preparing transaction: done
Verifying transaction: done
Executing transaction: done
#
# To activate this environment, use
#
#     $ conda activate heuditest38
#
# To deactivate an active environment, use
#
#     $ conda deactivate

$ conda install -n heuditest38 dcmstack
Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
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 the existing python installation in your environment:

Specifications:

  - dcmstack -> python[version='2.7.*|>=3.6,<3.7.0a0|>=3.7,<3.8.0a0']

Your python: python=3.8

If python is on the left-most side of the chain, that's the version you've asked for.
When python appears to the right, that indicates that the thing on the left is somehow
not available for the python version you are constrained to. Note that conda will not
change your python version to a different minor version unless you explicitly specify
that.

The following specifications were found to be incompatible with your CUDA driver:

  - feature:/linux-64::__cuda==10.2=0

Your installed CUDA driver is: 10.2

Environment (conda list):

$ conda list
# packages in environment at /opt/conda/shared/envs/heuditest38:
#
# Name                    Version                   Build  Channel
_libgcc_mutex             0.1                 conda_forge    conda-forge
_openmp_mutex             4.5                       0_gnu    conda-forge
ca-certificates           2020.4.5.1           hecc5488_0    conda-forge
certifi                   2020.4.5.1       py38h32f6830_0    conda-forge
ld_impl_linux-64          2.34                 h53a641e_0    conda-forge
libffi                    3.2.1             he1b5a44_1007    conda-forge
libgcc-ng                 9.2.0                h24d8f2e_2    conda-forge
libgomp                   9.2.0                h24d8f2e_2    conda-forge
libstdcxx-ng              9.2.0                hdf63c60_2    conda-forge
ncurses                   6.1               hf484d3e_1002    conda-forge
openssl                   1.1.1g               h516909a_0    conda-forge
pip                       20.1               pyh9f0ad1d_0    conda-forge
python                    3.8.2           he5300dc_7_cpython    conda-forge
python_abi                3.8                      1_cp38    conda-forge
readline                  8.0                  hf8c457e_0    conda-forge
setuptools                46.3.0           py38h32f6830_0    conda-forge
sqlite                    3.30.1               hcee41ef_0    conda-forge
tk                        8.6.10               hed695b0_0    conda-forge
wheel                     0.34.2                     py_1    conda-forge
xz                        5.2.5                h516909a_0    conda-forge
zlib                      1.2.11            h516909a_1006    conda-forge

Details about conda and system ( conda info ):

$ conda info
     active environment : heuditest38
    active env location : /opt/conda/shared/envs/heuditest38
            shell level : 2
       user config file : /home/conda/.condarc
 populated config files : /opt/conda/root/.condarc
                          /home/conda/.condarc
          conda version : 4.8.3
    conda-build version : not installed
         python version : 3.7.6.final.0
       virtual packages : __cuda=10.2
                          __glibc=2.31
       base environment : /opt/conda/root  (writable)
           channel URLs : https://conda.anaconda.org/conda-forge/linux-64
                          https://conda.anaconda.org/conda-forge/noarch
                          https://repo.anaconda.com/pkgs/main/linux-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/r/linux-64
                          https://repo.anaconda.com/pkgs/r/noarch
          package cache : /opt/conda/root/pkgs
                          /opt/conda/shared/pkgs
       envs directories : /opt/conda/shared/envs
                          /opt/conda/root/envs
                          /home/conda/.conda/envs
               platform : linux-64
             user-agent : conda/4.8.3 requests/2.22.0 CPython/3.7.6 Linux/5.4.0-29-generic ubuntu/20.04 glibc/2.31
                UID:GID : 1002:1002
             netrc file : None
           offline mode : False

[kastman]

Thanks for the q @mick-d - we're looking into it in #13 so stay tuned.

[mick-d]

Thank you @kastman, looking forward to the installation for python 3.8