mirror of
https://github.com/bazel-contrib/bazel-lib
synced 2024-11-28 21:33:48 +00:00
1df2becc7a
In particular this makes our bazelrc presets more compliant with client codebases, ensuring they can copy these files and not trip on their own pre-commit check
40 lines
1.2 KiB
Python
40 lines
1.2 KiB
Python
"""local_config_platform repository rule
|
|
"""
|
|
|
|
load(":repo_utils.bzl", "repo_utils")
|
|
|
|
def _impl(rctx):
|
|
rctx.file("BUILD.bazel", """load(':constraints.bzl', 'HOST_CONSTRAINTS')
|
|
|
|
package(default_visibility = ['//visibility:public'])
|
|
|
|
platform(name = 'host',
|
|
# Auto-detected host platform constraints.
|
|
constraint_values = HOST_CONSTRAINTS,
|
|
)
|
|
|
|
exports_files([
|
|
# Export constraints.bzl for use in downstream bzl_library targets.
|
|
'constraints.bzl',
|
|
])
|
|
""")
|
|
|
|
[os, cpu] = repo_utils.platform(rctx).split("_")
|
|
cpu_constraint = "@platforms//cpu:{0}".format("x86_64" if cpu == "amd64" else cpu)
|
|
os_constraint = "@platforms//os:{0}".format("osx" if os == "darwin" else os)
|
|
|
|
rctx.file("constraints.bzl", content = """HOST_CONSTRAINTS = [
|
|
'{0}',
|
|
'{1}',
|
|
]
|
|
""".format(cpu_constraint, os_constraint))
|
|
|
|
local_config_platform = repository_rule(
|
|
implementation = _impl,
|
|
doc = """Generates a repository in the same shape as the auto-generated @local_config_platform repository with an added bzl_library.
|
|
|
|
This is useful for rules that want to load `HOST_CONSTRAINTS` from `@local_config_platform//:constraints.bzl` and
|
|
also want to use stardoc for generating documentation.
|
|
""",
|
|
)
|