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using conda to install cdutil results in unexpected python 3.6 upgrade from 2.7

sashakames opened this issue · comments

commented

conda activated in path

$ conda create -n cdutiltest -c conda-forge -c cdat cdutil

The following NEW packages will be INSTALLED:

asn1crypto:      0.24.0-py36_0         conda-forge
ca-certificates: 2018.1.18-0           conda-forge
cdat_info:       8.0-py36_0            conda-forge
cdms2:           3.0-py36_5            conda-forge
cdtime:          3.0-py36_0            conda-forge
cdutil:          8.0-py36_1            conda-forge
certifi:         2018.1.18-py36_0      conda-forge
cffi:            1.11.5-py36_0         conda-forge
chardet:         3.0.4-py36_0          conda-forge
clapack:         3.2.1-0               conda-forge
cryptography:    2.2.1-py36_0          conda-forge
curl:            7.59.0-0              conda-forge
distarray:       2.12.2-py36_0         conda-forge
esmf:            7.1.0r-0              conda-forge
esmpy:           7.1.0r-py36_1         conda-forge
expat:           2.2.5-0               conda-forge
future:          0.16.0-py36_0         conda-forge
g2clib:          1.6.0-5               conda-forge
genutil:         8.0-py36_0            conda-forge
hdf4:            4.2.13-0              conda-forge
hdf5:            1.10.1-2              conda-forge
idna:            2.6-py36_1            conda-forge
intel-openmp:    2018.0.0-8                       
jasper:          1.900.1-4             conda-forge
jpeg:            9b-2                  conda-forge
krb5:            1.14.2-0              conda-forge
lapack:          3.6.1-1               conda-forge
libcdms:         3.0-1                 conda-forge
libcf:           1.0.1-py36_1          conda-forge

...
...

(base) [ames4@esgf-dev1 ~]$ conda activate cdutiltest
(cdutiltest) [ames4@esgf-dev1 ~]$ python --version
Python 3.6.4

My python got upgraded unexpectedly.

commented

@sashakames That should not happen, the files for linux python 2.7 are here.
https://anaconda.org/conda-forge/cdutil/files

linux-64/cdutil-8.0-py27_1.tar.bz2

conda create -n cdutil -c conda-forge cdutil
Fetching package metadata .............
Solving package specifications: .

Package plan for installation in environment /software/anaconda2/envs/py22:

The following NEW packages will be INSTALLED:

    asn1crypto:      0.24.0-py27_0         conda-forge
    ca-certificates: 2018.4.16-0           conda-forge
    cdat_info:       8.0-py27_0            conda-forge
    cdms2:           3.0-py27_6            conda-forge
...
commented

@dnadeau4 @sashakames I think this feature depends on anaconda version. I noticed that ost of the time we do bring in python 3.6 unless we specify python=2, but on some system (newer conda?) it does bring python 2 as expected.

commented

If this is still an issuem, please reopen.