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Version: 2.19.x (prerelease)

resource

A single resource file embedded in a code package and accessed in a location-independent manner.

Resources are embedded in code artifacts such as Python wheels or JVM JARs. The sources of a resources target are accessed via language-specific resource APIs, such as Python's pkgutil or JVM's ClassLoader, via paths relative to the target's source root.

Backend: pants.core

tags​

field.type_hint
required

Arbitrary strings to describe a target.

For example, you may tag some test targets with 'integration_test' so that you could run scie-pants-linux-x86_64 --tag='integration_test' test :: to only run on targets with that tag.

description​

field.type_hint
required

A human-readable description of the target.

Use scie-pants-linux-x86_64 list --documented :: to see all targets with descriptions.

dependencies​

field.type_hint
required

Addresses to other targets that this target depends on, e.g. ['helloworld/subdir:lib', 'helloworld/main.py:lib', '3rdparty:reqs#django'].

This augments any dependencies inferred by Pants, such as by analyzing your imports. Use scie-pants-linux-x86_64 dependencies or scie-pants-linux-x86_64 peek on this target to get the final result.

See https://www.pantsbuild.org/v2.19/docs/targets for more about how addresses are formed, including for generated targets. You can also run scie-pants-linux-x86_64 list :: to find all addresses in your project, or scie-pants-linux-x86_64 list dir to find all addresses defined in that directory.

If the target is in the same BUILD file, you can leave off the BUILD file path, e.g. :tgt instead of helloworld/subdir:tgt. For generated first-party addresses, use ./ for the file path, e.g. ./main.py:tgt; for all other generated targets, use :tgt#generated_name.

You may exclude dependencies by prefixing with !, e.g. ['!helloworld/subdir:lib', '!./sibling.txt']. Ignores are intended for false positives with dependency inference; otherwise, simply leave off the dependency from the BUILD file.

source​

field.type_hint
required

The source of this target.

If a string is provided, represents a path that is relative to the BUILD file's directory, e.g. source='example.ext'.

If an http_source is provided, represents the network location to download the source from. The downloaded file will exist in the sandbox in the same directory as the target.

http_source has the following signature:

http_source(url: str, *, len: int, sha256: str, filename: str = "")

The filename defaults to the last part of the URL path (e.g. example.ext), but can also be specified if you wish to have control over the file name. You cannot, however, specify a path separator to download the file into a subdirectory (you must declare a target in desired subdirectory).

You can easily get the len and checksum with the following command:

curl -L $URL | tee >(wc -c) >(shasum -a 256) >/dev/null

If a per_platform is provided, represents a mapping from platform to http_source, where the platform is one of (linux_arm64, linux_x86_64, macos_arm64, macos_x86_64) and is resolved in the execution target. Each http_source value MUST have the same filename provided.