Move examples into their own workspaces

This is more clear, as they don't need to round-trip via two .bzl files,
so the examples are self-contained. However, we'll need to work out how
to make them build on CI.

Author: illicitonion

.bazelignore

@@ -1,3 +1,4 @@
 docs
 examples
+examples/crate_universe
 examples/cargo_manifest_dir/external_crate

.gitignore

@@ -6,7 +6,7 @@
 # bazel
 /bazel-*
 /examples/bazel-*
-/examples/*/bazel-*
+/examples/crate_universe/*/bazel-*
 /docs/bazel-*
 
 # rustfmt

WORKSPACE

@@ -63,7 +63,7 @@ examples_repositories()
 
 load("@examples//:examples_deps.bzl", examples_deps = "deps")
 
-examples_deps(is_top_level = True)
+examples_deps()
 
 load("@examples//:examples_transitive_deps.bzl", examples_transitive_deps = "transitive_deps")
 

examples/crate_universe/basic/BUILD.bazel

@@ -2,7 +2,7 @@ load(
     "@rules_rust//rust:rust.bzl",
     "rust_binary",
 )
-load("@crate_universe_basic_rust_deps//:defs.bzl", "crate")
+load("@rust_deps//:defs.bzl", "crate")
 
 rust_binary(
     name = "basic",

examples/crate_universe/basic/WORKSPACE

@@ -0,0 +1,32 @@
+local_repository(
+    name = "rules_rust",
+    path = "../../..",
+)
+
+load("@rules_rust//rust:repositories.bzl", "rust_repositories")
+
+rust_repositories()
+
+load("@rules_rust//cargo:repositories.bzl", "crate_universe_deps")
+
+crate_universe_deps()
+
+load("@rules_rust//cargo:workspace.bzl", "crate", "crate_universe")
+
+crate_universe(
+    name = "rust_deps",
+    packages = [
+        crate.spec(
+            name = "lazy_static",
+            semver = "=1.4",
+        ),
+    ],
+    supported_targets = [
+        "x86_64-apple-darwin",
+        "x86_64-unknown-linux-gnu",
+    ],
+)
+
+load("@rust_deps//:defs.bzl", "pinned_rust_install")
+
+pinned_rust_install()

examples/crate_universe/has_aliased_deps/BUILD.bazel

@@ -2,7 +2,7 @@ load(
     "@rules_rust//rust:rust.bzl",
     "rust_binary",
 )
-load("@crate_universe_has_aliased_deps_rust_deps//:defs.bzl", "crate")
+load("@rust_deps//:defs.bzl", "crate")
 
 rust_binary(
     name = "has_aliased_deps",

examples/crate_universe/has_aliased_deps/WORKSPACE

@@ -0,0 +1,55 @@
+local_repository(
+    name = "rules_rust",
+    path = "../../..",
+)
+
+local_repository(
+    name = "examples",
+    path = "../../../examples",
+)
+
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "openssl",
+    strip_prefix = "openssl-OpenSSL_1_1_1d",
+    urls = ["https://github.com/openssl/openssl/archive/OpenSSL_1_1_1d.tar.gz"],
+    sha256 = "23011a5cc78e53d0dc98dfa608c51e72bcd350aa57df74c5d5574ba4ffb62e74",
+    build_file = "@examples//third_party/openssl:BUILD.openssl.bazel",
+)
+
+load("@rules_rust//rust:repositories.bzl", "rust_repositories")
+
+rust_repositories()
+
+load("@rules_rust//cargo:repositories.bzl", "crate_universe_deps")
+
+crate_universe_deps()
+
+load("@rules_rust//cargo:workspace.bzl", "crate", "crate_universe")
+
+crate_universe(
+    name = "rust_deps",
+    cargo_toml_files = ["//:Cargo.toml"],
+    overrides = {
+        "openssl-sys": crate.override(
+            extra_build_script_env_vars = {
+                "OPENSSL_DIR": "../openssl/openssl",
+            },
+            extra_bazel_deps = {
+                "cfg(all())": ["@openssl//:openssl"],
+            },
+            extra_build_script_bazel_data_deps = {
+                "cfg(all())": ["@openssl//:openssl"],
+            },
+        ),
+    },
+    supported_targets = [
+        "x86_64-apple-darwin",
+        "x86_64-unknown-linux-gnu",
+    ],
+)
+
+load("@rust_deps//:defs.bzl", "pinned_rust_install")
+
+pinned_rust_install()

examples/crate_universe/uses_proc_macro/BUILD.bazel

@@ -3,7 +3,7 @@ load(
     "rust_binary",
 )
 
-load("@crate_universe_uses_proc_macro_rust_deps//:defs.bzl", "crate")
+load("@rust_deps//:defs.bzl", "crate")
 
 rust_binary(
     name = "uses_proc_macro",

examples/crate_universe/uses_proc_macro/WORKSPACE

@@ -0,0 +1,27 @@
+local_repository(
+    name = "rules_rust",
+    path = "../../..",
+)
+
+load("@rules_rust//rust:repositories.bzl", "rust_repositories")
+
+rust_repositories()
+
+load("@rules_rust//cargo:repositories.bzl", "crate_universe_deps")
+
+crate_universe_deps()
+
+load("@rules_rust//cargo:workspace.bzl", "crate", "crate_universe")
+
+crate_universe(
+    name = "rust_deps",
+    cargo_toml_files = ["//:Cargo.toml"],
+    supported_targets = [
+        "x86_64-apple-darwin",
+        "x86_64-unknown-linux-gnu",
+    ],
+)
+
+load("@rust_deps//:defs.bzl", "pinned_rust_install")
+
+pinned_rust_install()

examples/crate_universe/uses_sys_crate/BUILD.bazel

@@ -4,7 +4,7 @@ load(
     "@rules_rust//rust:rust.bzl",
     "rust_binary",
 )
-load("@crate_universe_uses_sys_crate_rust_deps//:defs.bzl", "crate")
+load("@rust_deps//:defs.bzl", "crate")
 
 rust_binary(
     name = "uses_sys_crate",

examples/crate_universe/uses_sys_crate/WORKSPACE

@@ -0,0 +1,34 @@
+local_repository(
+    name = "rules_rust",
+    path = "../../..",
+)
+
+load("@rules_rust//rust:repositories.bzl", "rust_repositories")
+
+rust_repositories()
+
+load("@rules_rust//cargo:repositories.bzl", "crate_universe_deps")
+
+crate_universe_deps()
+
+load("@rules_rust//cargo:workspace.bzl", "crate", "crate_universe")
+
+crate_universe(
+    name = "rust_deps",
+    cargo_toml_files = ["//:Cargo.toml"],
+    lockfile = "//:lockfile.lock",
+    packages = [
+        crate.spec(
+            name = "libc",
+            semver = "=0.2.76",
+        ),
+    ],
+    supported_targets = [
+        "x86_64-apple-darwin",
+        "x86_64-unknown-linux-gnu",
+    ],
+)
+
+load("@rust_deps//:defs.bzl", "pinned_rust_install")
+
+pinned_rust_install()

examples/crate_universe/uses_sys_crate/lockfile.lock

@@ -1,13 +1,13 @@
 # rules_rust crate_universe file format 1
-# config hash d555ad6fce4572c24cb874f784ca32c0b4c5c6b6655c759f6b1381c0ef72667a
+# config hash 6194c33fc29701bfce95fa6d31095bf1268a7ae6aab060692153d2e9fcd34373
 
 load("@bazel_tools//tools/build_defs/repo:git.bzl", "new_git_repository")
 
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 def pinned_rust_install():
     http_archive(
-        name = "crate_universe_uses_sys_crate_rust_deps__bzip2__0_3_3",
+        name = "rust_deps__bzip2__0_3_3",
         # TODO: Allow configuring where rust_library comes from
         build_file_content = """# buildifier: disable=load
 load(
@@ -35,8 +35,8 @@ rust_library(
     name = "bzip2",
     crate_type = "lib",
     deps = [
-        "@crate_universe_uses_sys_crate_rust_deps__bzip2_sys__0_1_10_1_0_8//:bzip2_sys",
-        "@crate_universe_uses_sys_crate_rust_deps__libc__0_2_76//:libc",
+        "@rust_deps__bzip2_sys__0_1_10_1_0_8//:bzip2_sys",
+        "@rust_deps__libc__0_2_76//:libc",
     ],
     srcs = glob(["**/*.rs"]),
     crate_root = "src/lib.rs",
@@ -78,7 +78,7 @@ rust_library(
     )
 
     http_archive(
-        name = "crate_universe_uses_sys_crate_rust_deps__bzip2_sys__0_1_10_1_0_8",
+        name = "rust_deps__bzip2_sys__0_1_10_1_0_8",
         # TODO: Allow configuring where rust_library comes from
         build_file_content = """# buildifier: disable=load
 load(
@@ -113,8 +113,8 @@ cargo_build_script(
     crate_root = "build.rs",
     edition = "2015",
     deps = [
-        "@crate_universe_uses_sys_crate_rust_deps__cc__1_0_66//:cc",
-        "@crate_universe_uses_sys_crate_rust_deps__pkg_config__0_3_19//:pkg_config",
+        "@rust_deps__cc__1_0_67//:cc",
+        "@rust_deps__pkg_config__0_3_19//:pkg_config",
     ],
     rustc_flags = [
         "--cap-lints=allow",
@@ -151,7 +151,7 @@ rust_library(
     crate_type = "lib",
     deps = [
         ":bzip2_sys_build_script",
-        "@crate_universe_uses_sys_crate_rust_deps__libc__0_2_76//:libc",
+        "@rust_deps__libc__0_2_76//:libc",
     ],
     srcs = glob(["**/*.rs"]),
     crate_root = "lib.rs",
@@ -192,7 +192,7 @@ rust_library(
     )
 
     http_archive(
-        name = "crate_universe_uses_sys_crate_rust_deps__cc__1_0_66",
+        name = "rust_deps__cc__1_0_67",
         # TODO: Allow configuring where rust_library comes from
         build_file_content = """# buildifier: disable=load
 load(
@@ -242,7 +242,7 @@ rust_binary(
         "WORKSPACE.bazel",
         "WORKSPACE",
     ]),
-    version = "1.0.66",
+    version = "1.0.67",
     tags = [
         "cargo-raze",
         "manual",
@@ -280,7 +280,7 @@ rust_library(
         "WORKSPACE.bazel",
         "WORKSPACE",
     ]),
-    version = "1.0.66",
+    version = "1.0.67",
     tags = [
         "cargo-raze",
         "manual",
@@ -298,14 +298,14 @@ rust_library(
 # Unsupported target "cxxflags" with type "test" omitted
 # Unsupported target "test" with type "test" omitted
 """,
-        sha256 = "4c0496836a84f8d0495758516b8621a622beb77c0fed418570e50764093ced48",
-        strip_prefix = "cc-1.0.66",
+        sha256 = "e3c69b077ad434294d3ce9f1f6143a2a4b89a8a2d54ef813d85003a4fd1137fd",
+        strip_prefix = "cc-1.0.67",
         type = "tar.gz",
-        url = "https://crates.io/api/v1/crates/cc/1.0.66/download",
+        url = "https://crates.io/api/v1/crates/cc/1.0.67/download",
     )
 
     http_archive(
-        name = "crate_universe_uses_sys_crate_rust_deps__libc__0_2_76",
+        name = "rust_deps__libc__0_2_76",
         # TODO: Allow configuring where rust_library comes from
         build_file_content = """# buildifier: disable=load
 load(
@@ -420,7 +420,7 @@ rust_library(
     )
 
     http_archive(
-        name = "crate_universe_uses_sys_crate_rust_deps__pkg_config__0_3_19",
+        name = "rust_deps__pkg_config__0_3_19",
         # TODO: Allow configuring where rust_library comes from
         build_file_content = """# buildifier: disable=load
 load(
@@ -490,8 +490,8 @@ rust_library(
 
 
 CRATE_TARGET_NAMES = {
-    "bzip2": "@crate_universe_uses_sys_crate_rust_deps__bzip2__0_3_3//:bzip2",
-    "libc": "@crate_universe_uses_sys_crate_rust_deps__libc__0_2_76//:libc",
+    "bzip2": "@rust_deps__bzip2__0_3_3//:bzip2",
+    "libc": "@rust_deps__libc__0_2_76//:libc",
 }
 
 def crate(crate_name):
@@ -520,25 +520,25 @@ def all_proc_macro_deps():
 
 def crates_from(label):
     mapping = {
-        "@examples//crate_universe/uses_sys_crate:Cargo.toml": [crate("bzip2")],
+        "//:Cargo.toml": [crate("bzip2")],
     }
     return mapping[_absolutify(label)]
 
 def dev_crates_from(label):
     mapping = {
-        "@examples//crate_universe/uses_sys_crate:Cargo.toml": [],
+        "//:Cargo.toml": [],
     }
     return mapping[_absolutify(label)]
 
 def build_crates_from(label):
     mapping = {
-        "@examples//crate_universe/uses_sys_crate:Cargo.toml": [],
+        "//:Cargo.toml": [],
     }
     return mapping[_absolutify(label)]
 
 def proc_macro_crates_from(label):
     mapping = {
-        "@examples//crate_universe/uses_sys_crate:Cargo.toml": [],
+        "//:Cargo.toml": [],
     }
     return mapping[_absolutify(label)]