Anaconda Enterprise: Documentation

# Configuration

Contents

- Configuration
  - The conda configuration file (.condarc)
  - General configuration
    - Channel locations (channels)
    - Update conda automatically (auto_update_conda)
    - Always yes (always_yes)
    - Show Channel URLs (show_channel_urls)
    - Change command prompt (changeps1)
    - Add PIP as Python Dependency (add_pip_as_python_depedency)
    - Use PIP (use_pip)
    - Configure conda for use behind a proxy server (proxy_servers)
    - Offline mode only (offline)
  - Advanced configuration
    - Disallow soft-linking (allow_softlinks)
    - Set a channel alias (channel_alias)
    - Always add packages by default (create_default_packages)
    - Track features (track_features)
    - Disable updating of dependencies (update_dependencies)
  - Conda build configuration
    - Automatically upload conda build packages to Anaconda.org (anaconda_upload)
    - Specify conda build output root directory (conda-build)

## The conda configuration file (.condarc)

The conda configuration file (.condarc) is an OPTIONAL runtime configuration file which allows advanced users to configure various aspects of conda, such as which channels it searches for packages, proxy settings, environment directories, etc.

A .condarc file is not included by default, but it is automatically created in the user’s home directory the first time you run the `conda config` command.

A .condarc file may also be located in the root environment, in which case it overrides any in the home directory.

Note: A .condarc file can also be used in an administrator-controlled installation to override the users’ configuration. Please see Centralized installation.

The conda configuration file can be used to change:

- Where conda looks for packages
- If and how conda uses a proxy server
- Where conda lists known environments
- Whether to update the bash prompt with the current activated environment name
- Whether user-built packages should be uploaded to Anaconda.org
- Default packages or features to include in new environments
- And more.

To create or modify a .condarc configuration file, from the command line, use the `conda config` command, or use a text editor to create a new file named .condarc and save to your user home directory or root directory.

Example:

    conda config --add channels r

SEE ALSO: For a complete list of conda config commands available, see the command reference. The same list is available at the command prompt by typing `conda config --help`.

The .condarc configuration file follows simple YAML syntax.

Download a sample .condarc file to edit in your editor and save to your user home directory or root directory.

TIP: Conda supports tab completion with external packages instead of internal configuration.

For more configuration information see: http://anaconda.com/blog/advanced-conda-part-1#configuration

## General configuration

### Channel locations (channels)

Listing channel locations in the .condarc file will override conda defaults, causing conda to search only the channels listed here, in the order given.

Use `defaults` to automatically include all default channels. Non-url channels will be interpreted as Anaconda.org usernames, and this can be changed by modifying the `channel_alias` key as explained below. The default is just `defaults`.

    channels:
      - <anaconda_dot_org_username>
      - http://some.custom/channel
      - file:///some/local/directory
      - defaults

To select channels for a single environment, put a `.condarc` file in the root directory of that environment. If you have installed Miniconda with Python 3 in your home directory and the environment is named “flowers”, the path may be `~/miniconda3/envs/flowers/.condarc`, and for other conda installations the path will be similar.

### Update conda automatically (auto_update_conda)

When True, conda updates itself any time a user updates or installs a package in the root environment. When False, conda updates itself only if the user manually issues a conda update command. The default is `True`. You can edit the .condarc file or set the option with a command such as `conda config --set auto_update_conda False`.

    auto_update_conda: False

### Always yes (always_yes)

Choose the yes option whenever asked to proceed, such as when installing. Same as using the `--yes` flag at the command line. The default is `False`.

    always_yes: True

### Show Channel URLs (show_channel_urls)

Show channel URLs when displaying what is going to be downloaded and in `conda list`. The default is `False`.

    show_channel_urls: True

### Change command prompt (changeps1)

When using `activate`, change the command prompt (`$PS1`) to include the activated environment. The default is `True`.

    changeps1: False

### Add PIP as Python Dependency (add_pip_as_python_depedency)

Add pip, wheel and setuptools as dependencies of python. This ensures pip, wheel and setuptools will always be installed any time python is installed. The default is `True`.

    add_pip_as_python_dependency: False

### Use PIP (use_pip)

Use pip when listing packages with `conda list`. Note that this does not affect any conda command or functionality other than the output of the command `conda list`. The default is `True`.

    use_pip: False

### Configure conda for use behind a proxy server (proxy_servers)

By default, proxy settings are pulled from the `HTTP_PROXY` and `HTTPS_PROXY` environment variables or the system. Setting them here overrides that default.

    proxy_servers:
        http: http://user:pass@corp.com:8080
        https: https://user:pass@corp.com:8080

To give a proxy for a specific scheme and host, use the scheme://hostname form for the key. This will match for any request to the given scheme and exact hostname.

    proxy_servers:
      'http://10.20.1.128': 'http://10.10.1.10:5323'

Note: If you do not include the username and password, of if authentication fails, conda will prompt for a username and password.

Note: If your password contains special characters they will need to be escaped as follows: https://en.wikipedia.org/wiki/Percent-encoding#Percent-encoding_reserved_characters

Note: Be careful not to use `http` when you mean `https`, or `https` when you mean `http`.

Note: If you are behind a proxy that does SSL inspection such as a Cisco IronPort Web Security Appliance (WSA), it may be necessary to override the SSL verification settings using `ssl_verify` as described in SSL verification (ssl_verify).

### Offline mode only (offline)

Filters out all channels URLs which do not use the `file://` protocol. The default is `False`.

    offline: True

## Advanced configuration

### Disallow soft-linking (allow_softlinks)

When `allow_softlinks` is `True`, conda uses hard-links when possible, and soft-links (symlinks) when hard-links are not possible, such as when installing on a different filesystem than the one that the package cache is on.

When `allow_softlinks` is `False`, conda still uses hard-links when possible, but when it is not possible, conda copies files. Note that individual packages can override this, specifying that certain files should never be soft-linked, independent of this option (see the `no_link` option in the build recipe documentation).

The default is `True`.

    allow_softlinks: False

### Set a channel alias (channel_alias)

By default, `conda install --channel asmeurer <package>` is the same as `conda install --channel https://conda.anaconda.org/asmeurer <package>`. This is because the default `channel_alias` is https://conda.anaconda.org/ . Whenever conda is given a channel name that is not a URL, it prepends the `channel_alias` to the front of the name it was given.

You can set the `channel_alias` to your own repository. If your repository is at https://yourrepo.com then `conda install --channel jsmith <package>` would be the same as `conda install --channel https://yourrepo.com/jsmith <package>` .

    channel_alias: https://your.repo/

NOTE: For Windows users, the slash (/) at the end of a URL is required. Example https://your.repo/conda/

### Always add packages by default (create_default_packages)

When creating new environments add these packages by default. You can override this option at the command prompt with the `--no-default-packages` flag. The default is not to include any packages.

    create_default_packages:
      - ipython

### Track features (track_features)

Enable certain features to be tracked by default. The default is to not track any features. This is similar to adding `mkl` to the `create_default_packages` list.

    track_features:
      - mkl

### Disable updating of dependencies (update_dependencies)

By default, `conda install` updates the given package and all its dependencies to the latest versions.

If you prefer to only update the packages given explicitly at the command line and avoid updating existing installed packages as much as possible, you can set `update_dependencies` to `True`.

    update_dependencies: True

Note that conda will still ensure that dependency specifications are satisfied, so some dependencies may still be updated, or, conversely, this may prevent packages given at the command line from being updated to their latest versions. You can always specify versions at the command line to force conda to install a given version (like `conda install numpy=1.9.3`).

This option can also be enabled or disabled at the command line with the `--update-dependencies` and `--no-update-dependencies` flags.

To avoid updating only specific packages in an environment, a better option may be to pin them. See Pinning packages for more information.

## Conda build configuration

### Automatically upload conda build packages to Anaconda.org (anaconda_upload)

Automatically upload packages built with `conda build` to Anaconda.org. The default is `False`.

    anaconda_upload: True

### Specify conda build output root directory (conda-build)

Build output root directory. This can also be set with the `CONDA_BLD_PATH` environment variable. The default is `<CONDA_PREFIX>/conda-bld/`, or if you do not have write permissions to `<CONDA_PREFIX>/conda-bld/` , `~/conda-bld/` .

    conda-build:
        root-dir: ~/conda-builds