Bazel repository rule To establish a dependency when looking up an environment variable, use either repository_ctx. Sep 14, 2021 · It looks like the Bazel team recently merged this PR that deprecated the use of new_git_repository in favour of just using git_repository to make it consistent with other rules like http_archive (see PR for more details). _It is a security risk to omit the SHA-256 as remote files can change. 5 A callable value that may be invoked during evaluation of the WORKSPACE file or within the implementation function of a module extension to instantiate and return a repository rule. Sep 19, 2020 · I can create a label_flag in Bazel to allow command line flags to in turn be matched with a config_setting in a Bazel BUILD file. Clones a Git repository, checks out the specified tag, or commit, and makes its targets available for binding. Users author standard kubernetes manifests and kustomize overlays for their services. Value of any environment variable declared with the environ attribute of the repository_rule function Mar 19, 2020 · If the Bazel label is sufficient as a source, you might try fetching repo roots with BUILD files with bazel query 'buildfiles(//)'. Dec 10, 2024 · This page covers how to define repository rules and provides examples for more details. Examples C++ auto-configured toolchain : it uses a repo rule to automatically create the C++ configuration files for Bazel by looking for the local C++ compiler, the environment Oct 22, 2024 · name: Name; required . 0 License, and code samples are licensed under the Apache 2. See http_archive. Examples C++ auto-configured toolchain : it uses a repository rule to automatically create the C++ configuration files for Bazel by looking for the local C++ compiler, the Dec 10, 2024 · Repository Rules Stay organized with collections Save and categorize content based on your preferences. Examples C++ auto-configured toolchain : it uses a repository rule to automatically create the C++ configuration files for Bazel by looking for the local C++ compiler, the Oct 22, 2024 · 7. Nov 9, 2019 · Bazel will call a repository rule's implementation function when a file is needed in an external workspace defined with that repository rule. attr. Examples Dec 10, 2024 · http repository rules Stay organized with collections Save and categorize content based on your preferences. 5 Dec 4, 2024 · This attribute is _not_ supported in `MODULE. Dec 10, 2024 · repository_rule Stay organized with collections Save and categorize content based on your preferences. struct repository_ctx. 0 License. 4 . getenv instead. Dec 10, 2024 · NOTE: Retrieving an environment variable from this dictionary does not establish a dependency from a repository rule or module extension to the environment variable. Allows a local directory to be turned into a Bazel repository. Sep 20, 2024 · Rules for making directories in the local filesystem available as repos. Dec 4, 2024 · This attribute is _not_ supported in `MODULE. Jul 11, 2017 · There is no way to access the architecture, except asking for uname -m using repository_ctx. name 从代码库规则的实现函数读取时，它会返回 Guides to maximize Bazel's power through advanced concepts and extensions Concepts Writing rules Distributing rules APIs Whenever a repository rule asks bazel to fetch a file via ctx. 5 Jul 13, 2017 · I have a java test I'm trying to sandbox which does somewhat of a complex download logic. This page describes the recommended, native, and non-native Bazel rules. Dec 10, 2024 · git repository rules Stay organized with collections Save and categorize content based on your preferences. Much of Bazel’s strength comes from the ability to define new rules that can be used by others. I have the following Starlark snippet: print(ctx. 5. Repository rules are Bazel rules that can be used in WORKSPACE files to import projects in external repositories. patch(patch_file, strip=0, *, watch_patch='auto') Apply a patch file to the root directory of external repository. Downloads a file to the output path for the provided url and returns a struct containing success, a flag which is true if the download completed successfully, and if successful, a hash of the file with the fields sha256 and integrity. Jul 11, 2024 · A string identifying the operating system Bazel is running on (the value of the "os. download_and_extract and provides a hash sum of the file needed, bazel will first look into the directories specified by that option for a file matching the basename of the first URL provided, and use that local copy if the hash matches. Report an issue open_in_new View source open_in_new Dec 10, 2024 · git repository rules Stay organized with collections Save and categorize content based on your preferences. 2 · 7. None repository_ctx. Each external repository rule creates its own workspace, with its own BUILD files and artifacts. Fetch a repository An external repository is a rule that can be used only in the WORKSPACE file and enables non-hermetic operation at the loading phase of Bazel. A unique name for this repository. Declaration of the repository rule in the WORKSPACE file. To use these rules in a module extension, load them in your . The patch file should be a standard unified diff format Repository Rules Stay organized with collections Save and categorize content based on your preferences. 0 License , and code samples are licensed under the Apache 2. Recommended rules. However, I'd like to not hard-code the default value of the label_flag, and instead compute a good default based on the system when evaluating a repository_rule (or some other part of the WORKSPACE file). Executing a rule usually means the thing that happens every time you reference the package after restarting the bazel server, regardless of whether that runs any commands vs produces cache hits. This creates a protobuf based log of the actions by Bazel. build/8218 is released, Bazel will re-perform the fetch operation if and only if any of the following dependencies change: Skylark files needed to define the repository rule. repository_os repository_ctx. For older versions, we used to use a custom repository rule to do the fetching with authentication. attr . It assumes the parameters name , build_file , build_file_content , workspace_file , and workspace_file_content to be present in ctx. Repository name: bazelbuild/rules_go; Repository description: Go rules for Bazel; Repository tags: golang, bazel; README. Even when I declare every Label usage as arguments to the repository rules I still see "Restarting" after running bazel sync. execute. md header: Go rules for Bazel (note the link to https://bazel. bazel file as a repository rule, one or more times. genfiles_dir) print(ctx. build which will guide users who are unfamiliar with Bazel to the right place) Rules can be grouped either by language (such as Scala) or platform (such as Android). If the GitHub project does not have BUILD files, a BUILD file is required when using new_git_repository. Dec 10, 2024 · None repository_ctx. patch. name: Name; required . Repos can be defined in a multitude of ways, but ultimately, each repo is defined by invoking a Oct 22, 2024 · A callable value that may be invoked during evaluation of the WORKSPACE file or within the implementation function of a module extension to instantiate and return a repository rule. This rule creates a Bazel repository by creating a WORKSPACE file and subdirectory containing symlinks to the BUILD file and path given. bazel. def _impl (repository_ctx): url = repository_ctx. Repository rules may download projects and transform them by applying patches or generating build files. The patch file should be a standard unified diff format file. * `PYTHON_LIB_PATH`: Location of python libraries. For that you need to pretend that the DX SDK is part of your source tree. Bazel offers "repository rules" for that purpose. Dec 10, 2024 · For consistency, you should follow this same format when publishing your Bazel rules. Alternatively, you can run a trivial authenticating proxy on localhost for the purpose against which bazel can make the requests and which relays the requests to remote serve using required authentication. Bazel GitOps Rules provides tooling to bridge the gap between Bazel (for hermetic, reproducible, container builds) and continuous, git-operation driven, deployments. Repository aliases Maven artifact rules like maven_jar and jvm_import_external generate targets labels in the form of @group_artifact//jar , like @com_google_guava_guava//jar . patch_args: None: patch_tool: The patch_tool attribute of a Bazel repository rule. sha256. Here is a selection of recommended rules: Android; C Rules. The Bazel-native patch implementation doesn't support fuzz match and binary patch like the patch command line tool. _ Dec 10, 2024 · Here you can ask bazel to only refetch those external repositories where the repository_rule definition has the configure attribute set, use bazel sync --configure. name (which is the same as os. genfiles_dir. By default, it uses the Bazel-native patch implementation which doesn't support fuzz match and binary patch, but Bazel will fall back to use patch command line tool if `patch_tool` attribute is specified or there are arguments other than `-p` in `patch_args` attribute. Repository Rules Stay organized with collections Save and categorize content based on your preferences. Parameters Here you can ask Bazel to only refetch those external repos where the repository_rule definition has the configure attribute set, use bazel fetch --force --configure. The Bazel ecosystem has a growing and evolving set of rules to support popular languages and packages. name from the JVM so if it contains win you can execute the Windows command). Whenever a repository rule asks bazel to fetch a file via ctx. 所有 repository_rule 都具有隐式定义的属性 name。这是一个字符串属性，行为有点神奇：当指定为代码库规则调用的输入时，它会采用明显的代码库名称；但当使用 repository_ctx. Dec 10, 2024 · Report an issue open_in_new View source open_in_new Nightly · 8. 3 · 7. 0 · 6. patch_tool: None: patches: The patches attribute of a Bazel repository rule. name" Java property converted to lower case). May 30, 2018 · What you're looking might already be implemented in the new_git_repository repository rule, or the git_repository rule if the GitHub project already has Bazel BUILD files wired in. The build file should create targets relative to the path. Then, you can work on the repository rule until it generates those same files. sha256: String; optional The expected SHA-256 of the file downloaded. 5 git_repository git_repository(name, branch, commit, init_submodules, patch_args, patch_cmds, patch_cmds_win, patch_tool, patches, remote, shallow_since, strip_prefix, tag, verbose) Clone an external git repository. This means that the current repository can define and use targets from anywhere on the filesystem. getenv or module_ctx. url checksum = repository_ctx. Send feedback Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4. 1 · 7. As with other Bazel repository rules, the standard http_proxy, https_proxy and no_proxy environment variables (and their uppercase counterparts) are supported. name. Here is a selection of recommended rules string repository_ctx. 0 License . Apr 25, 2018 · In principle you need a cc_library rule whose hdrs attribute globs the DirectX headers. Sep 10, 2017 · How can a Bazel `repository_rule` adjust a `label_flag` (or a `config_setting` more generally)? Mar 14, 2024 · Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4. For example, to use local_repository: Alternatively, you can directly call these repo rules in your MODULE. 1. patch(patch_file, strip=0) Apply a patch file to the root directory of external repository. The most common repo rules by far are http_archive, which downloads an archive from a URL and extracts it, and local_repository, which symlinks a local directory that is already a Bazel repository. Dec 10, 2024 · See Repository rules for more information about how to write your own repository rules. 4 · 7. shallow_since: String; optional an optional date, not after the specified commit; the argument is not allowed if a tag or branch is specified (which can always be cloned with --depth=1). Make sure to use a descriptive GitHub repository description and README. http repository rules Stay organized with collections Save and categorize content based on your preferences. md title, example: Repository name: bazelbuild/rules_go; Repository description: Go rules for Bazel; Repository tags: golang, bazel It then came back to stay in version 1. Create a file named deps. bzl file and then call them from your extension's implementation function. Otherwise, you could run bazel clean --expunge and run a build with --experimental_execution_log_file=<FILENAME>. Repos created in such a way are only visible to the current module, under the name declared using the name attribute on the proxy. 0 · 7. Report an issue open_in_new View source open_in_new Nightly · 7. os. attr ; the latter four possibly with value None. download or ctx. It assumes that the parameters patches , patch_tool , patch_args , patch_cmds and patch_cmds_win are present in ctx. bazel file with use_repo_rule: Repository Rules. 5 A callable value that may be invoked during evaluation of the WORKSPACE file or within the implementation function of a module Jul 11, 2024 · struct repository_ctx. Sep 20, 2024 · This rule is intended to be used in the implementation function of a repository rule. Let's start with a small example. Jul 11, 2024 · struct repository_ctx. A struct to access information from the system. The name of the external repository created by this rule. Feb 22, 2017 · After cr. This must match the SHA-256 of the file downloaded. Repository Rules. The archive will be unpacked into this directory, after applying `strip_prefix` (if any) to the file paths within the archive. path) print( Jul 9, 2021 · I am trying to use Bazel with Pybind, and it requires that I set the following variables: """Repository rule for Python autoconfiguration. bazel file with use_repo_rule: http_archive = use_repo_rule Dec 10, 2024 · This rule creates a Bazel repository by creating a WORKSPACE file and subdirectory containing symlinks to the BUILD file and path given. name Apr 23, 2019 · The Bazel Starlark API does strange things with files in external repositories. bzl with the hello_repo repository rule below. bazel` context (when invoking a repository rule inside a module extension's implementation function). You can also make it work on Windows by executing a different command depending on repository_ctx. A rule defines a series of actions that Bazel performs on inputs to produce a set of outputs, which are referenced in providers returned by the rule's implementation function. Based on this statement: To avoid unnecessary restarts (which are expensive, as network access might have to be repeated), label arguments are prefetched, provided all label arguments can be resolved to an existing file. Here you can ask bazel to only refetch those external repositories where the repository_rule definition has the configure attribute set, use bazel sync --configure. Examples This rule is inteded to be used in the implementation function of a repository rule. Dec 10, 2024 · repo_rule_proxy use_repo_rule(repo_rule_bzl_file, repo_rule_name) Returns a proxy value that can be directly invoked in the MODULE. attr. `python_configure` depends on the following environment variables: * `PYTHON_BIN_PATH`: location of python binary. . Created by repository_rule(). Report an issue open_in_new View source open_in_new Nightly · 8. This page covers how to create repository rules and provides examples for more details. An external repository is a rule that can be used only in the WORKSPACE file and enables non-hermetic operation at the loading phase of Bazel. patches: None: proc_macro_deps Dec 10, 2024 · The Bazel ecosystem has a growing and evolving set of rules to support popular languages and packages. Guides to maximize Bazel's power through advanced concepts and extensions Concepts Writing rules Distributing rules APIs Apr 2, 2022 · I think bazel build --nobuild --experimental_repository_resolved_file=X // will include everything. The patch_args attribute of a Bazel repository rule. 5 Oct 22, 2024 · http repository rules Stay Alternatively, you can directly call these repo rules in your MODULE. download(url, output='', sha256='', executable=False, allow_fail=False, canonical_id='', auth={}, *, integrity=''). add_prefix: String; optional Destination directory relative to the repository directory. execute to Dec 7, 2020 · Sometimes it's helpful to copy the whole thing somewhere else, replace your repository rule with local_repository in your WORKSPACE, and edit things to be the way you want them without worrying about how to write a repository rule to generate them. I'm thinking of writing a repository rule which will just start a java app using repository_ctx. Much of Bazel's strength comes from the ability to define new rules that can be used by others. For directories that already contain a WORKSPACE file and a BUILD file, the local_repository rule can be used. os. An external repository is a directory tree, containing source files usable in a Bazel build, which is generated on demand by running its corresponding repo rule. yxt anhcyk fsqbgyc enlfut khsr emao dxglj udqpetf zxszys hlkxu