Environment variables

The following environment variables modify the default behavior of both the Python API and the command-line interface. Since they affect any program that uses cjdk as a library, they are intended for setting user preferences or for testing applications.

CJDK_ARCH

Set to the name of a CPU architecture to override the default (which is the current CPU architecture as reported by Python’s platform.machine()).

Added in version 0.2.0.

CJDK_CACHE_DIR

Set to an absolute path to override the default cache directory, used when not overridden by a keyword argument or command-line option.

CJDK_HIDE_PROGRESS_BARS

Set to 1, YES, or TRUE (case insensitive) to disable all progress bars. Note that this only hides progress bars, unlike --no-progress or progress=False which hide all progress messages.

This can be used when the output is being captured by tools that do not correctly emulate a terminal (such as Jupyter Book at the time of writing). You probably don’t need it in Jupyter Lab or regular terminals.

Added in version 0.3.0.

CJDK_INDEX_TTL

Set to an integer number of seconds to override the default time-to-live for the cached JDK index.

Added in version 0.2.0.

CJDK_INDEX_URL

Set to a URL to override the default JDK index.

Added in version 0.2.0.

CJDK_OS

Set to the name of an operating system to override the default (which is the current operating system as reported by Python’s sys.platform).

Added in version 0.2.0.

CJDK_VENDOR

Set to a JDK vendor to override the default (adoptium).