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

What is the conda version of this?

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

I've found these commands:

while read requirement; do conda install --yes $requirement; done < requirements.txt 

But it doesn't tell how to specify --target ./lib

5 Answers

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.

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.

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 

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

would this work?

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

or

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