Conda Install

conda install


usage: conda install [-h] [--revision REVISION] [-n ENVIRONMENT | -p PATH]
                    [-c CHANNEL] [--use-local] [--override-channels]
                    [--repodata-fn REPODATA_FNS] [--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] [--force-reinstall]
                    [--freeze-installed | --update-deps | -S | --update-all | --update-specs]
                    [-m] [--clobber] [--dev]
                    [package_spec [package_spec ...]]

Positional Arguments


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).

  • -dev

Use sys.executable -m conda in wrapper scripts instead of CONDA_EXE. This is mainly for use during tests where we test new conda source against old Python versions.

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 local directories using the 'file://' syntax or simply a path like '/home/conda/mychan' or '../mychan'). 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

  • -use-local

Use locally built packages. Identical to '-c local'.

  • -override-channels

Do not search default or .condarc channels. Requires --channel.

  • -repodata-fn

Specify name of repodata on remote server. Conda will try whatever you specify, but will ultimately fall back to repodata.json if your specs are not satisfiable with what you specify here. This is used to employ repodata that is reduced in time scope. You may pass this flag more than once. Leftmost entries are tried first, and the fallback to repodata.json is added for you automatically.

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.

  • -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.

  • -update-specs

Update based on provided specifications.

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.


conda install -n myenv scipy