update or install in one command?

[Jacob Vanderplas]

Hi all,

Is there any single conda command that will update a package if it exists, or install the package if it doesn't?

I'm thinking of a conda equivalent to ``pip install -U package``

Having such a command would simplify installation instructions in situations where the user might have an older version of the package already around.

I understand that ``conda install`` followed by ``conda update`` would work for all users, but in my experience every extra step in installation instructions roughly doubles the number of users who will contact the mailing list with installation issues. A single install + update command like the one pip provides would be very useful.

Thanks,

    Jake

 Jake VanderPlas

 Senior Data Science Fellow

 Director of Open Software

 University of Washington eScience Institute

[James E.H. Turner]

Hi Jake,

Doesn't ``conda install`` (again) do what you want? Just a suggestion if
you hadn't tried it, since I spotted this in passing.

Cheers,

James.

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[Michael Sarahan]

Yes, I think James is right:

conda create -n update_test python=3.6.0

Solving environment: done

## Package Plan ##

  environment location: /Users/msarahan/miniconda3/envs/update_test

  added / updated specs:

    - python=3.6.0

The following packages will be downloaded:

    package                    |            build

    ---------------------------|-----------------

    python-3.6.0               |                0        11.7 MB

The following NEW packages will be INSTALLED:

    ca-certificates: 2018.03.07-0

    certifi:         2018.4.16-py36_0

    openssl:         1.0.2o-h26aff7b_0

    pip:             10.0.1-py36_0

    python:          3.6.0-0

    readline:        6.2-2

    setuptools:      39.1.0-py36_0

    sqlite:          3.13.0-0

    tk:              8.5.18-0

    wheel:           0.31.1-py36_0

    xz:              5.2.3-h727817e_4

    zlib:            1.2.11-hf3cbc9b_2

Proceed ([y]/n)?

Downloading and Extracting Packages

python 3.6.0################################################################################################ | 100%

Preparing transaction: done

Executing transaction: done

#

# To activate this environment, use:

# > source activate update_test

#

# To deactivate an active environment, use:

# > source deactivate

#

 msarahan@0109-msarahan-2  ~/code/aggregate   master ●✚  conda install -n update_test python pillow

Solving environment: done

## Package Plan ##

  environment location: /Users/msarahan/miniconda3/envs/update_test

  added / updated specs:

    - pillow

    - python

The following packages will be downloaded:

    package                    |            build

    ---------------------------|-----------------

    pillow-5.1.0               |   py36hfcce615_0         542 KB

The following NEW packages will be INSTALLED:

    freetype:  2.8-h12048fb_1

    jpeg:      9b-he5867d9_2

    libcxx:    4.0.1-h579ed51_0

    libcxxabi: 4.0.1-hebd6815_0

    libedit:   3.1.20170329-hb402a30_2

    libffi:    3.2.1-h475c297_4

    libpng:    1.6.34-he12f830_0

    libtiff:   4.0.9-hcb84e12_1

    ncurses:   6.1-h0a44026_0

    olefile:   0.45.1-py36_0

    pillow:    5.1.0-py36hfcce615_0

The following packages will be UPDATED:

    python:    3.6.0-0                 --> 3.6.5-hc167b69_1

    readline:  6.2-2                   --> 7.0-hc1231fa_4

    sqlite:    3.13.0-0                --> 3.23.1-hf1716c9_0

    tk:        8.5.18-0                --> 8.6.7-h35a86e2_3

On Tue, May 15, 2018 at 4:33 PM, James E.H. Turner <jeht...@gmail.com> wrote:

Hi Jake,

Doesn't ``conda install`` (again) do what you want? Just a suggestion if
you hadn't tried it, since I spotted this in passing.

Cheers,

James.


On 15/05/18 17:28, Jacob Vanderplas wrote:

Hi all,
Is there any single conda command that will update a package if it exists, or install the package if it doesn't?

I'm thinking of a conda equivalent to ``pip install -U package``

Having such a command would simplify installation instructions in situations where the user might have an older version of the package already around.

I understand that ``conda install`` followed by ``conda update`` would work for all users, but in my experience every extra step in installation instructions roughly doubles the number of users who will contact the mailing list with installation issues. A single install + update command like the one pip provides would be very useful.

Thanks,
     Jake

Jake VanderPlas
  Senior Data Science Fellow
  Director of Open Software
University of Washington eScience Institute

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[Ariel Balter]

In the mean time,

conda update --all -y && conda install XXXX -y

You could make an alias.