"conda env update" fails

[alanhdu]

I can't seem to update an environment with conda env update (conda env create works fine, but I don't want to repeatedly delete and recreate an environment if I don't have too).

$ conda env update --file=environment.yml
Fetching package metadata: ......
Solving package specifications: # TODO handle more gracefully

$ conda info
Current conda install:

             platform : linux-64
        conda version : 3.14.1
  conda-build version : not installed
       python version : 3.4.3.final.0
     requests version : 2.7.0
     root environment : /home/alan/anaconda  (writable)
  default environment : /home/alan/anaconda
     envs directories : /home/alan/anaconda/envs
        package cache : /home/alan/anaconda/pkgs
         channel URLs : https://conda.anaconda.org/blaze/linux-64/
                        https://conda.anaconda.org/blaze/noarch/
                        https://repo.continuum.io/pkgs/free/linux-64/
                        https://repo.continuum.io/pkgs/free/noarch/
                        https://repo.continuum.io/pkgs/pro/linux-64/
                        https://repo.continuum.io/pkgs/pro/noarch/
          config file : /home/alan/.condarc
    is foreign system : False

The environment.yml file:

name: grader
dependencies:
- openssl=1.0.1k=1
- pip=7.1.0=py27_0
- py=1.4.30=py27_0
- pytest=2.7.2=py27_0
- python=2.7.10=0
- readline=6.2=2
- setuptools=18.0.1=py27_0
- sqlite=3.8.4.1=1
- system=5.8=2
- tk=8.5.18=0
- zlib=1.2.8=0

[alanhdu]

Hm... after reinstalling anaconda, I can't seem to replicate this anymore. Not sure what happened here...

Sorry for the noise.

[alanhdu]

I figured out how to reproduce this behavior. It only happens if you run conda env update for an environment that already matches the environment.yml file:

$ conda create -n test python=2
Fetching package metadata: ....
Solving package specifications: .................
Package plan for installation in environment /home/alan/miniconda3/envs/test:

The following NEW packages will be INSTALLED:

    openssl:    1.0.1k-1     
    pip:        7.1.0-py27_0 
    python:     2.7.10-0     
    readline:   6.2-2        
    setuptools: 18.0.1-py27_0
    sqlite:     3.8.4.1-1    
    system:     5.8-2        
    tk:         8.5.18-0     
    zlib:       1.2.8-0      

Proceed ([y]/n)? y

Linking packages ...
[      COMPLETE      ]|#########################################################################################################################| 100%
#
# To activate this environment, use:
# $ source activate test
#
# To deactivate this environment, use:
# $ source deactivate
#
$ conda env export -n test > environment.yml
$ conda env update -n test -f environment.yml 
Fetching package metadata: ....
Solving package specifications: # TODO handle more gracefully$ 

If I edit environment.yml, then the command works as expected.

My conda info:

Current conda install:

             platform : linux-64
        conda version : 3.15.1
  conda-build version : not installed
       python version : 3.4.3.final.0
     requests version : 2.7.0
     root environment : /home/alan/miniconda3  (writable)
  default environment : /home/alan/miniconda3
     envs directories : /home/alan/miniconda3/envs
        package cache : /home/alan/miniconda3/pkgs
         channel URLs : https://repo.continuum.io/pkgs/free/linux-64/
                        https://repo.continuum.io/pkgs/free/noarch/
                        https://repo.continuum.io/pkgs/pro/linux-64/
                        https://repo.continuum.io/pkgs/pro/noarch/
          config file : /home/alan/.condarc
    is foreign system : False

[alanhdu]

Look like this is actually already reported in https://github.com/conda/conda-env/issues/81

[github-actions]

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