更新Bazel规则中的package.json版本

我正在尝试创建一个Bazel规则,该规则将更新 package.json 包装前 npm_package .

总之,我想 packages/server/package.tpl.json 并创建输出 包.json 我可以依靠的 npm U包 .

我试过很多不同的错误,比如 read-only file system , no such attribute 'out' in 'stamp_package_json' rule 和 rule 'package_json' has file 'package.json' as both an input and an output 以及当前的错误 The following files have no generating action: packages/server/package.json

我的项目结构如下:

/
  /packages
    /server
      /src
        BUILD.blaze
      BUILD.blaze
      package.tpl.json
  /tools
    /npm
      BUILD.blaze
      stamp_package_json.bzl

这是一个monorepo,所以它有更多的包,而不仅仅是服务器。

在 packages/server/BUILD.blaze 我使用两条规则:

package(default_visibility=["//visibility:public"])
load("@build_bazel_rules_nodejs//:defs.bzl", "npm_package")
load("//tools/npm:stamp_package_json.bzl", "stamp_package_json")

stamp_package_json(
    name = "package_json",
    package_json = "package.tpl.json",
    out = "package.json"
    )

npm_package(
    name = "red-server_package",
    deps = [
        ":package_json",
        "//packages/server/src:shared-red-server-library"
    ],
    replacements = {"//packages/": "//"},
)

如果我重新命名 package.tpl.json 到 包.json 把文件放进去 npm U包 它按预期工作,只是版本不正确。

这个 stamp_package_json 规则定义于 tools/npm/stamp_package_json.bzl :

def _impl(ctx):
    package_json = ctx.file.package_json

    # The command may only access files declared in inputs.
    ctx.actions.run_shell(
        inputs = [package_json],
        outputs = [ctx.outputs.executable],
        arguments=[package_json.path],
        progress_message = "Stamping package.json file %s" % package_json.short_path,
        command="jq '.version=\"123\"' $1 > $@")

stamp_package_json = rule(
    implementation=_impl,
    executable = True,
    attrs = {
        "package_json" : attr.label(allow_single_file=True),
        "out": attr.output(mandatory = True)
    }
)

如上所述,它当前抛出一个错误:

The following files have no generating action: packages/server/package.json

我好像不知道该怎么处理。或者我的方法有什么好处。或者如果这能以任何其他方式实现。

编辑 :写了一篇关于我最终得到的解决方案的博客文章: https://medium.com/red-flag/developer-diary-day-1-bazel-build-system-with-monorepo-and-typescript-6f7a5a0a2b00