Add gazelle distribution and enable build_file_generation test (#913)

Author: aignas

BUILD

@@ -32,6 +32,7 @@ filegroup(
         "WORKSPACE",
         "internal_deps.bzl",
         "internal_setup.bzl",
+        "//gazelle:distribution",
         "//python:distribution",
         "//python/pip_install:distribution",
         "//third_party/github.com/bazelbuild/bazel-skylib/lib:distribution",

examples/BUILD

@@ -17,6 +17,11 @@ package(default_visibility = ["//visibility:public"])
 
 licenses(["notice"])  # Apache 2.0
 
+bazel_integration_test(
+    name = "build_file_generation_example",
+    timeout = "long",
+)
+
 bazel_integration_test(
     name = "pip_install_example",
     timeout = "long",

gazelle/BUILD.bazel

@@ -69,3 +69,13 @@ gazelle_binary(
     languages = ["//gazelle"],
     visibility = ["//visibility:public"],
 )
+
+filegroup(
+    name = "distribution",
+    srcs = glob(["**"]) + [
+        "//gazelle/manifest:distribution",
+        "//gazelle/modules_mapping:distribution",
+        "//gazelle/pythonconfig:distribution",
+    ],
+    visibility = ["//:__pkg__"],
+)

gazelle/manifest/BUILD.bazel

@@ -17,3 +17,12 @@ go_test(
     data = glob(["testdata/**"]),
     deps = [":manifest"],
 )
+
+filegroup(
+    name = "distribution",
+    srcs = glob(["**"]) + [
+        "//gazelle/manifest/generate:distribution",
+        "//gazelle/manifest/test:distribution",
+    ],
+    visibility = ["//gazelle:__pkg__"],
+)

gazelle/manifest/generate/BUILD.bazel

@@ -13,3 +13,9 @@ go_binary(
     embed = [":generate_lib"],
     visibility = ["//visibility:public"],
 )
+
+filegroup(
+    name = "distribution",
+    srcs = glob(["**"]),
+    visibility = ["//gazelle/manifest:__pkg__"],
+)

gazelle/manifest/test/BUILD.bazel

@@ -15,3 +15,9 @@ go_binary(
 )
 
 exports_files(["run.sh"])
+
+filegroup(
+    name = "distribution",
+    srcs = glob(["**"]),
+    visibility = ["//gazelle/manifest:__pkg__"],
+)

gazelle/modules_mapping/BUILD.bazel

@@ -5,3 +5,9 @@ py_binary(
     srcs = ["generator.py"],
     visibility = ["//visibility:public"],
 )
+
+filegroup(
+    name = "distribution",
+    srcs = glob(["**"]),
+    visibility = ["//gazelle:__pkg__"],
+)

gazelle/pythonconfig/BUILD.bazel

@@ -14,3 +14,9 @@ go_library(
         "@com_github_emirpasic_gods//lists/singlylinkedlist",
     ],
 )
+
+filegroup(
+    name = "distribution",
+    srcs = glob(["**"]),
+    visibility = ["//gazelle:__pkg__"],
+)