| commit | 2364b1142070408c659104cd514470041bfd979e | [log] [tgz] |
|---|---|---|
| author | Chris Parsons <cparsons@google.com> | Tue Nov 20 14:25:37 2018 -0500 |
| committer | Chris Parsons <cparsons@google.com> | Tue Nov 20 14:25:37 2018 -0500 |
| tree | 7bb5a5929935d586fb7d5806d502715daaca994c | |
| parent | cc50dc0d7df7b12924e3f86c309bdb8b0f9f6ed9 [diff] |
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Skylib is a standard library that provides functions useful for manipulating collections, file paths, and other features that are useful when writing custom build rules in Bazel.
This library is currently under early development. Be aware that the APIs in these modules may change during this time.
Each of the .bzl files in the lib directory defines a “module”—a struct that contains a set of related functions and/or other symbols that can be loaded as a single unit, for convenience.
Add the following to your WORKSPACE file to import the Skylib repository into your workspace. Replace the version number in the tag attribute with the version you wish to depend on:
git_repository( name = "bazel_skylib", remote = "https://github.com/bazelbuild/bazel-skylib.git", tag = "0.1.0", # change this to use a different release )
Then, in the BUILD and/or *.bzl files in your own workspace, you can load the modules (listed below) and access the symbols by dotting into those structs:
load("@bazel_skylib//lib/paths.bzl", "paths") load("@bazel_skylib//lib/shell.bzl", "shell") p = paths.basename("foo.bar") s = shell.quote(p)
new_setsSteps to add a module to Skylib:
Create a new .bzl file in the lib directory.
Write the functions or other symbols (such as constants) in that file, defining them privately (prefixed by an underscore).
Create the exported module struct, mapping the public names of the symbols to their implementations. For example, if your module was named things and had a function named manipulate, your things.bzl file would look like this:
def _manipulate(): ... things = struct( manipulate=_manipulate, )
Add unit tests for your module in the tests directory.
bzl_libraryThe bzl_library.bzl rule can be used to aggregate a set of Starlark files and its dependencies for use in test targets and documentation generation.