Conda version pip install -r requirements.txt --target ./lib

You can run conda install --file requirements.txt instead of the loop, but there is no target directory in conda install. conda install installs a list of packages into a specified conda environment.

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To create an environment named py37 with python 3.7, using the channel conda-forge and a list of packages:

conda create -y --name py37 python=3.7
conda install --force-reinstall -y -q --name py37 -c conda-forge --file requirements.txt
conda activate py37
...
conda deactivate

Flags explained:

-y: Yes, do not ask for confirmation.

--force-reinstall: Install the package even if it already exists.

-q: Quiet, do not display progress bar.

-c: Channels, additional channels to search for packages. These are URLs searched in the order

Alternatively you can create an environment.yml file instead of requirements.txt:

name: py37
channels:
  - conda-forge
dependencies:
  - python=3.7
  - numpy=1.9.*
  - pandas

Use these commands to create and activate the conda environment based on the specifications in the Yaml file:

conda env create --file environment.yml
conda activate py37

Use this command to list the environments you have:

conda info --envs

Use this command to remove the environment:

conda env remove --name py37

New! The ansible-role dockpack.base_conda can manage conda environments on Linux, Mac and Windows, and can be used to create a docker image with custom conda environments.

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You can always try this:

/home/user/anaconda3/bin/pip install -r requirements.txt

This simply uses the pip installed in the conda environment. If pip is not preinstalled in your environment you can always run the following command

conda install pip

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A quick search on the conda official docs will help you to find what each flag does.

So far:

-y: Do not ask for confirmation.

-f: I think it should be --file, so it read package versions from the given file.

-q: Do not display progress bar.

-c: Additional channel to search for packages. These are URLs searched in the order

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would this work?

cat requirements.txt | while read x; do conda install "$x" -p ./lib ;done

or

conda install --file requirements.txt -p ./lib

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You can easily run the following command to install all packages in requirment.txt with an additional channel to search for packages:

conda install -c conda-forge --file requirements.txt

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