Anaconda/Conda - Install a Specific Package Version

anaconda/conda - install a specific package version

There is no version 1.3.0 for rope. 1.3.0 refers to the package cached-property. The highest available version of rope is 0.9.4.

You can install different versions with conda install package=version. But in this case there is only one version of rope so you don't need that.

The reason you see the cached-property in this listing is because it contains the string "rope": "cached-p rope erty"

py35_0 means that you need python version 3.5 for this specific version. If you only have python3.4 and the package is only for version 3.5 you cannot install it with conda.

I am not quite sure on the defaults either. It should be an indication that this package is inside the default conda channel.

How can I install a particular version of a conda package?

If you look through all of the package versions on the first page, you will notice that their label is 'main'. However, the version you want to install has the label 'cf201901'.

You should therefore change your install command to:

conda install -c conda-forge/label/cf201901 eccodes=2.7.0

By including the label in the channel it will be able to find the correct older version.

Alternatively, you can copy the link of the old package directly from the website you were browsing and just run:

conda install https://anaconda.org/conda-forge/eccodes/2.7.0/download/osx-64/eccodes-2.7.0-0.tar.bz2

If you want to install version 2.7.0 for osx

Installing specific BUILD of an anaconda package

The column with py27_0 is what build/version of python it is for. The column with defaults is to indicate which Anaconda channel it falls under. Different users or organizations can have their own channels but the default channel is defaults and another popular channel is conda-forge.

The way you install any specific version from that information is:

conda install pillow=4.2.1=py27h7cd2321_0

Which is of the format

conda install <package_name>=<version>=<build_string>

If you want to choose which channel (otherwise defaults is chosen by default):

conda install -c <channel> <package_name>=<version>=<build_string>

Install package from conda for a specific version of python

The following code creates an environment with a specific python version (2.7 since 3.4 was not an option), then you activate it and install the package you need.

conda create -n test python=2.7
conda activate test 
conda install -c bioconda plastid
python

Then in Python, I did the following and got no errors

from string import maketrans

Specific package version with conda-forge

The way you install any specific version from that information is:

conda install -c conda-forge keras=1.0.7=py27_0

Which is of the format

conda install <package_name>=<version>=<build_string>

If you want to choose which channel (otherwise defaults is chosen by default):

conda install -c <channel> <package_name>=<version>=<build_string>

Note: The comment above (+1) already solved the question, this answer yet adds some details and strives to improve readability.

Conda - search for package, specify Python version

There isn't a direct mechanism to constrain Python version outside of running the actual solver. However, the major channels use the Python version (say 3.8) to generate a string (say "py38") that is included in the build string. This can thus be used as proxy, by searching for constraints on the build string. For example, the following (equivalent) expressions should pick up all Python 2.7 builds of numpy in the configured channels:

## search all versions with 'py27' build string
conda search 'numpy=*=*py27*'

## alternative (MatchSpec) syntax
conda search 'numpy[build=*py27*]'

The first version must explicitly specify the version as unconstrained ("*"); the latter directly specifies the build constraint, with the unconstrained version implied.

---

Related Topics