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@thundergolfer thundergolfer released this 15 Oct 22:29
0.1.0
c8c79aa

WORKSPACE setup

http_archive(
    name = "rules_python",
    url = "https://github.com/bazelbuild/rules_python/releases/download/0.1.0/rules_python-0.1.0.tar.gz",
    sha256 = "b6d46438523a3ec0f3cead544190ee13223a52f6a6765a29eae7b7cc24cc83a0",
)

Incompatible Changes

(Note that, per semver, our version starts with 0. so any minor release can have breaking changes)

We have deprecated the pip_import rule and moved it to a "legacy" package. Bazel rulesets that attempt to import load("@rules_python//python:pip.bzl", "pip_import") will fail, as pip_import has been replaced
by load("@rules_python//python:pip.bzl", "pip_install")
See https://github.com/bazelbuild/rules_python/tree/master/examples/pip_install for an example of using pip_install.

If you use a ruleset such as rules_docker which depends on pip_import then you'll need to update that ruleset along with rules_python 0.1.0. We are working to land changes in those dependents to make this possible, in the meantime see the Patches section below.

If there's a problem with pip_install which prevents you switching, please file an issue with us or discuss on Slack so we can resolve it.
We plan to remove it in a future breaking release.
In this case, note that you can still use pip_import during the transition.
You just replace your loads from @rules_python//python:pip.bzl with @rules_python//python/legacy_pip_import:pip.bzl.
See https://github.com/bazelbuild/rules_python/tree/master/examples/legacy_pip_import for an example of use.

Thank you to @dillon-giacoppo and the other contributors to rules_python_external for building this better way to get dependencies from pip!

Patches

rules_docker

If you use rules_docker you can patch their release by adding this file to your repo. NOTE: it will print a WARNING line because of using the deprecated API; a better patch to switch to pip_install is on the way.

rules_docker.pr1650.patch

diff repositories/py_repositories.bzl repositories/py_repositories.bzl
index 72bb27b..9ba152c 100644
--- repositories/py_repositories.bzl
+++ repositories/py_repositories.bzl
@@ -19,7 +19,7 @@ Provides functions to pull all Python external package dependencies of this
 repository.
 """

-load("@rules_python//python:pip.bzl", "pip_import", "pip_repositories")
+load("@rules_python//python/legacy_pip_import:pip.bzl", "pip_import", "pip_repositories")

 def py_deps():
     """Pull in external Python packages needed by py binaries in this repo.

then where you fetch rules_docker, add a patches attribute:

    http_archive(
        name = "io_bazel_rules_docker",
        patches = ["//:rules_docker.pr1650.patch"],
        ...
    )

(Note, this assumes you have a BUILD file in the workspace root. You can put the patch file in any package you like)

Using the rules

See the source.

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