conda install

Installs a list of packages into a specified conda environment.

This command accepts a list of package specifications (e.g, bitarray=0.8) and installs a set of packages consistent with those specifications and compatible with the underlying environment. If full compatibility cannot be assured, an error is reported and the environment is not changed.

Conda attempts to install the newest versions of the requested packages. To accomplish this, it may update some packages that are already installed, or install additional packages. To prevent existing packages from updating, use the –freeze-installed option. This may force conda to install older versions of the requested packages, and it does not prevent additional dependency packages from being installed.

If you wish to skip dependency checking altogether, use the ‘–no-deps’ option. This may result in an environment with incompatible packages, so this option must be used with great caution.

conda can also be called with a list of explicit conda package filenames (e.g. ./lxml-3.2.0-py27_0.tar.bz2). Using conda in this mode implies the –no-deps option, and should likewise be used with great caution. Explicit filenames and package specifications cannot be mixed in a single command.

Options:

usage: conda install [-h] [--revision REVISION] [-n ENVIRONMENT | -p PATH]
                     [-c CHANNEL] [--use-local] [--override-channels]
                     [--strict-channel-priority] [--no-channel-priority]
                     [--no-deps | --only-deps] [--no-pin] [--copy] [-C] [-k]
                     [--offline] [-d] [--json] [-q] [-v] [-y]
                     [--download-only] [--show-channel-urls] [--file FILE]
                     [--prune] [--force-reinstall]
                     [--freeze-installed | --update-deps | -S | --update-all]
                     [-m] [--clobber]
                     [package_spec [package_spec ...]]

Positional Arguments

package_spec Packages to install or update in the conda environment.

Named Arguments

--revision Revert to the specified REVISION.
--file Read package versions from the given file. Repeated file specifications can be passed (e.g. –file=file1 –file=file2).

Target Environment Specification

-n, --name Name of environment.
-p, --prefix Full path to environment location (i.e. prefix).

Channel Customization

-c, --channel
Additional channel to search for packages. These are URLs searched in the order
they are given (including file:// for local directories). Then, the defaults or channels from .condarc are searched (unless –override-channels is given). You can use ‘defaults’ to get the default packages for conda. You can also use any name and the .condarc channel_alias value will be prepended. The default channel_alias is http://conda.anaconda.org/.
--use-local Use locally built packages. Identical to ‘-c local’.
--override-channels
 Do not search default or .condarc channels. Requires –channel.

Solver Mode Modifiers

--strict-channel-priority
 Packages in lower priority channels are not considered if a package with the same name appears in a higher priority channel.
--no-channel-priority
 Package version takes precedence over channel priority. Overrides the value given by conda config –show channel_priority.
--no-deps Do not install, update, remove, or change dependencies. This WILL lead to broken environments and inconsistent behavior. Use at your own risk.
--only-deps Only install dependencies.
--no-pin Ignore pinned file.
--prune Remove packages that have previously been brought into the environment to satisfy dependencies of user-requested packages, but are no longer needed.
--force-reinstall
 Ensure that any user-requested package for the current operation is uninstalled and reinstalled, even if that package already exists in the environment.
--freeze-installed, --no-update-deps
 Do not update or change already-installed dependencies.
--update-deps Update dependencies.
-S, --satisfied-skip-solve
 Exit early and do not run the solver if the requested specs are satisfied. Also skips aggressive updates as configured by ‘aggressive_update_packages’. Similar to the default behavior of ‘pip install’.
--update-all, --all
 Update all installed packages in the environment.

Package Linking and Install-time Options

--copy Install all packages using copies instead of hard- or soft-linking.
-m, --mkdir Create the environment directory if necessary.
--clobber Allow clobbering of overlapping file paths within packages, and suppress related warnings.

Networking Options

-C, --use-index-cache
 Use cache of channel index files, even if it has expired.
-k, --insecure Allow conda to perform “insecure” SSL connections and transfers. Equivalent to setting ‘ssl_verify’ to ‘false’.
--offline Offline mode. Don’t connect to the Internet.

Output, Prompt, and Flow Control Options

-d, --dry-run Only display what would have been done.
--json Report all output as json. Suitable for using conda programmatically.
-q, --quiet Do not display progress bar.
-v, --verbose Can be used multiple times. Once for INFO, twice for DEBUG, three times for TRACE.
-y, --yes Do not ask for confirmation.
--download-only
 Solve an environment and ensure package caches are populated, but exit prior to unlinking and linking packages into the prefix.
--show-channel-urls
 Show channel urls. Overrides the value given by conda config –show show_channel_urls.

Examples:

conda install -n myenv scipy