Problems with 'validate_proto' not declared in package 'validate'

[GiulianoWF]

Curently when I try to build my project I get:

ERROR: Traceback (most recent call last):
        File "/home/user/.cache/bazel/_bazel_user/43633c363e7fef7d5294d9a3f2e8c154/external/protoc-gen-validate~/validate/BUILD", line 3, column 47, in <toplevel>
                load("@rules_cc//cc:defs.bzl", "cc_library", "cc_proto_library")
Error: file '@rules_cc//cc:defs.bzl' does not contain symbol 'cc_proto_library'
ERROR: /home/user/.cache/bazel/_bazel_user/43633c363e7fef7d5294d9a3f2e8c154/external/protoc-gen-validate~/validate/BUILD: no such target '@@protoc-gen-validate~//validate:validate_proto': target 'validate_proto' not declared in package 'validate' defined by /home/user/.cache/bazel/_bazel_user/43633c363e7fef7d5294d9a3f2e8c154/external/protoc-gen-validate~/validate/BUILD

It seams that the version of rules_cc that is being used does not correspond to the version expected by protoc-gen-validate?

my modules:

bazel_dep(name = "protoc-gen-validate", version = "1.0.4")
bazel_dep(name = "rules_proto_grpc_cpp", version = "5.0.0")
bazel_dep(name = "grpc", version = "1.68.0")
bazel_dep(name = "protobuf", version = "27.1")
bazel_dep(name = "abseil-cpp", version = "20240116.2")
bazel_dep(name = "zlib", version = "1.3.1.bcr.3")

and the config:

bazel_dep(name = "toolchains_protoc", version = "0.3.6")

protoc = use_extension("@toolchains_protoc//protoc:extensions.bzl", "protoc")
protoc.toolchain(
    google_protobuf = "com_google_protobuf",
    version = "v27.1",
)
use_repo(protoc, "com_google_protobuf", "toolchains_protoc_hub")

register_toolchains("@toolchains_protoc_hub//:all")

Any idea what can I do?

[kgreenek]

This hit me as well.

rules_cc has removed cc_proto_library as of v0.1.0.

See the Incompatible Changes section here:
https://github.com/bazelbuild/rules_cc/releases/tag/0.1.0

The fix is to use cc_proto_library from com_google_protobuf instead. Like so:

load("@com_google_protobuf//bazel:cc_proto_library.bzl", "cc_proto_library")

[kgreenek]

The rules_proto repo has been deprecated entirely as well.

It should no longer be used.

See the README here:
https://github.com/bazelbuild/rules_proto

Instead, proto_library should be imported from com_google_protobuf as well. Like so:

load("@com_google_protobuf//bazel:proto_library.bzl", "proto_library")

[kgreenek]

I'll take a stab at removing @rules_proto as a dependency and updating to the latest protobuf.

[kgreenek]

I believe I have fixed the issue for this repo in #1210.

This problem will also affect rules_buf and gazelle as well, since gazelle generates build files which currently use rules_proto.