feat: download and register Zig release 0.10.1 for Linux

WORKSPACE

@@ -13,10 +13,9 @@ load("//zig:repositories.bzl", "rules_zig_dependencies", "zig_register_toolchain
 # Fetch dependencies which users need as well
 rules_zig_dependencies()
 
-# TODO[AH] Zig version
 zig_register_toolchains(
-    name = "zig1_14",
-    zig_version = "1.14.2",
+    name = "zig",
+    zig_version = "0.10.1",
 )
 
 # For running our own unit tests

e2e/workspace/BUILD

@@ -3,15 +3,30 @@ Add a basic smoke-test target below.
 """
 
 load("@bazel_skylib//rules:build_test.bzl", "build_test")
+load("@bazel_skylib//rules:diff_test.bzl", "diff_test")
 # load("rules_zig//zig:defs.bzl", "...")
 
 # Replace with a usage of your rule/macro
 filegroup(name = "empty")
 
+genrule(
+    name = "zig_version",
+    outs = ["zig_version.actual"],
+    cmd = "$(ZIG_BIN) version > $(OUTS)",
+    toolchains = ["@zig_toolchains//:resolved_toolchain"],
+)
+
 build_test(
     name = "smoke_test",
     targets = [
         # targets you add above
         ":empty",
+        ":zig_version",
     ],
 )
+
+diff_test(
+    name = "zig_version_test",
+    file1 = ":zig_version.expected",
+    file2 = ":zig_version.actual",
+)

e2e/workspace/WORKSPACE

@@ -14,6 +14,11 @@ local_repository(
 # you should fetch it *before* calling this.
 # Alternatively, you can skip calling this function, so long as you've
 # already fetched all the dependencies.
-load("@rules_zig//zig:repositories.bzl", "rules_zig_dependencies")
+load("@rules_zig//zig:repositories.bzl", "rules_zig_dependencies", "zig_register_toolchains")
 
 rules_zig_dependencies()
+
+zig_register_toolchains(
+    name = "zig",
+    zig_version = "0.10.1",
+)

e2e/workspace/zig_version.expected

@@ -0,0 +1 @@
+0.10.1

zig/private/toolchains_repo.bzl

@@ -20,31 +20,12 @@ with only the toolchain attribute pointing into the platform-specific repositori
 # Add more platforms as needed to mirror all the binaries
 # published by the upstream project.
 PLATFORMS = {
-    # TODO[AH] Zig platforms
-    "x86_64-apple-darwin": struct(
-        compatible_with = [
-            "@platforms//os:macos",
-            "@platforms//cpu:x86_64",
-        ],
-    ),
-    "aarch64-apple-darwin": struct(
-        compatible_with = [
-            "@platforms//os:macos",
-            "@platforms//cpu:aarch64",
-        ],
-    ),
-    "x86_64-unknown-linux-gnu": struct(
+    "x86_64-linux": struct(
         compatible_with = [
             "@platforms//os:linux",
             "@platforms//cpu:x86_64",
         ],
     ),
-    "x86_64-pc-windows-msvc": struct(
-        compatible_with = [
-            "@platforms//os:windows",
-            "@platforms//cpu:x86_64",
-        ],
-    ),
 }
 
 def _toolchains_repo_impl(repository_ctx):

zig/private/versions.bzl

@@ -1,14 +1,11 @@
 """Mirror of release info
 
-TODO: generate this file from GitHub API"""
+TODO[AH]: generate this file from https://ziglang.org/download/index.json"""
 
 # The integrity hashes can be computed with
 # shasum -b -a 384 [downloaded file] | awk '{ print $1 }' | xxd -r -p | base64
 TOOL_VERSIONS = {
-    "1.14.2": {
-        "x86_64-apple-darwin": "sha384-ws4+rANvv0YxM1SgIBUXSG9jT8dKw83nls6R5qYkEKzPUB+viBIEozSsyq2e6i+f",
-        "aarch64-apple-darwin": "sha384-HcvJbxoJtGSavkGu0e7CyD00cBlmDb0TBWJ4JSaNa70zuU3N7XlMOYm3bbQcAv2U",
-        "x86_64-pc-windows-msvc": "sha384-35YN6TKpT0L9qyRBmq48NucvyXEtHnkeC+txf2YZmmJTmOzrAKREA74BA0EZvpar",
-        "x86_64-unknown-linux-gnu": "sha384-QgGOwTaetxY0h5HWCKc/3ZtBs4N/fgaaORthn7UcEv++Idm9W+ntCCZRwvBdwHPD",
+    "0.10.1": {
+        "x86_64-linux": "sha256-Zpnw5ykwgbQkKPMsnZyYOFQJS9Ff7lSJ8SxM9FGMw4A=",
     },
 }

zig/repositories.bzl

@@ -40,22 +40,21 @@ _ATTRS = {
 }
 
 def _zig_repo_impl(repository_ctx):
-    # TODO[AH] Zig download URL
-    url = "https://github.com/someorg/someproject/releases/download/v{0}/mylang-{1}.zip".format(
-        repository_ctx.attr.zig_version,
-        repository_ctx.attr.platform,
-    )
+    # TODO[AH] read URLs from https://ziglang.org/download/index.json
+    url = "https://ziglang.org/download/0.10.1/zig-linux-x86_64-0.10.1.tar.xz"
+    strip_prefix = "zig-linux-x86_64-0.10.1"
     repository_ctx.download_and_extract(
         url = url,
         integrity = TOOL_VERSIONS[repository_ctx.attr.zig_version][repository_ctx.attr.platform],
+        stripPrefix = strip_prefix,
     )
 
     # TODO[AH] compiler and lib files
     build_content = """#Generated by zig/repositories.bzl
 load("@rules_zig//zig:toolchain.bzl", "zig_toolchain")
 zig_toolchain(name = "zig_toolchain", target_tool = select({
-        "@bazel_tools//src/conditions:host_windows": "mylang_tool.exe",
-        "//conditions:default": "mylang_tool",
+        "@bazel_tools//src/conditions:host_windows": "zig.exe",
+        "//conditions:default": "zig",
     }),
 )
 """

zig/tests/versions_test.bzl

@@ -7,12 +7,10 @@ load("//zig/private:versions.bzl", "TOOL_VERSIONS")
 
 def _smoke_test_impl(ctx):
     env = unittest.begin(ctx)
-    asserts.equals(env, "1.14.2", TOOL_VERSIONS.keys()[0])
+    asserts.equals(env, "0.10.1", TOOL_VERSIONS.keys()[0])
     return unittest.end(env)
 
-# The unittest library requires that we export the test cases as named test rules,
-# but their names are arbitrary and don't appear anywhere.
-_t0_test = unittest.make(_smoke_test_impl)
+_smoke_test = unittest.make(_smoke_test_impl)
 
 def versions_test_suite(name):
-    unittest.suite(name, _t0_test)
+    unittest.suite(name, _smoke_test)