当项目具有内部依赖性时，bazel golang 构建失败

Question

我使用的是 MacOS 10.13.2。去 1.10。巴泽尔 0.11.1

我需要编译一个包含 2 个项目（project1 和 project2）的 repo。 project1 有 2 个子包。 p1lib 和 dep1 p1lib 使用 dep1.

我用 gazelle 生成 BUILD 文件，文件看起来没问题。

gazelle -go_prefix=github.com/BazelBuildForGo

但是当我运行构建时，我收到一条错误消息，指出我缺少直接依赖项。

bazel build //project1
INFO: Analysed target //project1:project1 (3 packages loaded).
INFO: Found 1 target...
ERROR: /private/var/tmp/_bazel_user1/df78026a5ee0c7ed3d23dd05c3a3b1f7/external/com_github_wix_private_bazelbuildforgo/project1/p1lib/BUILD.bazel:3:1: GoCompile external/com_github_wix_private_bazelbuildforgo/project1/p1lib/darwin_amd64_stripped/go_default_library~/github.com/BazelBuildForGo/project1/p1lib.a failed (Exit 1)
2018/03/25 18:02:55 missing strict dependencies:
    external/com_github_wix_private_bazelbuildforgo/project1/p1lib/p1lib.go: import of github.com/wix-private/BazelBuildForGo/project1/dep1, which is not a direct dependency
Target //project1:project1 failed to build
Use --verbose_failures to see the command lines of failed build steps.
INFO: Elapsed time: 0.358s, Critical Path: 0.12s
FAILED: Build did NOT complete successfully

我的项目可以在这里找到 https://github.com/wix-playground/BazelBuildForGo

Answer 1

我认为问题在于您在命令行中传递给 Gazelle 的导入前缀 (github.com/BazelBuildForGo) 与 .go 文件中的导入前缀 (github.com/wix-private/BazelBuildForGo) 不同。当 Gazelle 看到当前前缀之外的导入时，它会为这些导入生成外部依赖，而那些依赖将丢失：

go_library(
    name = "go_default_library",
    srcs = ["p1lib.go"],
    importpath = "github.com/BazelBuildForGo/project1/p1lib",
    visibility = ["//visibility:public"],
    deps = ["@com_github_wix_private_bazelbuildforgo//project1/dep1:go_default_library"],
)

这个问题的修复非常简单。只是运行个前缀为 github.com/wix-private/BazelBuildForGo 的瞪羚。你实际上已经在 //:gazelle 中有了这个，所以只需运行那个，然后重建。

$ bazel run //:gazelle
$ bazel build //...

这会将上面的 go_library 规则更改为：

go_library(
    name = "go_default_library",
    srcs = ["p1lib.go"],
    importpath = "github.com/wix-private/BazelBuildForGo/project1/p1lib",
    visibility = ["//visibility:public"],
    deps = ["//project1/dep1:go_default_library"],
)

当项目具有内部依赖性时，bazel golang 构建失败

bazel golang build fails when project has internal dependency

build

go

bazel