chore: update release rules & target to match silo (#470)

Author: gregmagolan

bazel/hash/BUILD.bazel

@@ -17,13 +17,12 @@ version_file(
 
 bazelisk_artifacts(
     name = "aspect_bazelisk_artifacts",
-    darwin_arm64 = ":aspect-darwin-arm64",
-    darwin_x86_64 = ":aspect-darwin-amd64",
-    linux_arm64 = ":aspect-linux-arm64",
-    linux_x86_64 = ":aspect-linux-amd64",
+    darwin_arm64 = ":aspect-macos-aarch64",
+    darwin_x86_64 = ":aspect-macos-x86_64",
+    linux_arm64 = ":aspect-linux-aarch64",
+    linux_x86_64 = ":aspect-linux-x86_64",
     tags = ["manual"],
     version_file = ":aspect_version",
-    windows_x86_64 = ":aspect-windows-amd64",
 )
 
 cli_brew_artifacts(

bazel/hash/sha256.bzl

@@ -30,10 +30,10 @@ _ATTRS = {
         mandatory = True,
         allow_single_file = True,
     ),
-    "windows_x86_64": attr.label(
-        doc = "The artifact for the linux-arm64 platform.",
-        mandatory = True,
-        allow_single_file = True,
+    "_sha256sum": attr.label(
+        executable = True,
+        cfg = "exec",
+        default = "//release/sha256sum",
     ),
 }
 
@@ -46,10 +46,10 @@ def _impl(ctx):
         ctx.file.darwin_x86_64,
         ctx.file.linux_arm64,
         ctx.file.linux_x86_64,
-        ctx.file.windows_x86_64,
     ]
 
     args = ctx.actions.args()
+    args.add(ctx.executable._sha256sum.path)
     args.add(outdir.path)
     args.add(ctx.file.version_file)
     args.add(ctx.file.darwin_arm64)
@@ -60,17 +60,16 @@ def _impl(ctx):
     args.add("linux-arm64")
     args.add(ctx.file.linux_x86_64)
     args.add("linux-x86_64")
-    args.add(ctx.file.windows_x86_64)
-    args.add("windows-x86_64.exe")
 
     ctx.actions.run_shell(
         outputs = [outdir],
         inputs = inputs,
         arguments = [args],
         command = """\
-output_dir="$1"
-version_file="$2"
-shift 2
+sha256sum="${PWD}/$1"
+output_dir="$2"
+version_file="$3"
+shift 3
 
 version="$(< "${version_file}")"
 
@@ -87,10 +86,11 @@ while (("$#")); do
     cp "${artifact_path}" "${output_dir}/bazel-${version}-${platform_suffix}"
     (
         cd "${output_dir}"
-        sha256sum "bazel-${version}-${platform_suffix}" > "bazel-${version}-${platform_suffix}.sha256"
+        "${sha256sum}" "bazel-${version}-${platform_suffix}" > "bazel-${version}-${platform_suffix}.sha256"
     )
 done
 """,
+        tools = [ctx.executable._sha256sum],
     )
 
     return [

release/BUILD.bazel

@@ -9,7 +9,6 @@ bzl_library(
     srcs = ["brew_bottle.bzl"],
     visibility = ["//visibility:public"],
     deps = [
-        "//bazel/hash:sha256",
         "@bazel_skylib//lib:paths",
         "@rules_pkg//pkg:mappings.bzl",
         "@rules_pkg//pkg:tar.bzl",

release/bazelisk_artifacts.bzl

@@ -0,0 +1,16 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
+
+go_library(
+    name = "sha256sum_lib",
+    srcs = ["main.go"],
+    importpath = "aspect.build/cli/release/sha256sum",
+    visibility = ["//visibility:private"],
+)
+
+go_binary(
+    name = "sha256sum",
+    embed = [":sha256sum_lib"],
+    visibility = [
+        "//release:__pkg__",
+    ],
+)

release/brew/BUILD.bazel

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2022 Aspect Build Systems, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"crypto/sha256"
+	"fmt"
+	"io"
+	"log"
+	"os"
+)
+
+func main() {
+	var input io.Reader
+	var filename string
+	if len(os.Args) == 1 {
+		input = os.Stdin
+		filename = "-"
+	} else {
+		f, err := os.Open(os.Args[1])
+		if err != nil {
+			log.Fatal(err)
+		}
+		defer f.Close()
+		input = f
+		filename = os.Args[1]
+	}
+
+	hash := sha256.New()
+	if _, err := io.Copy(hash, input); err != nil {
+		log.Fatal(err)
+	}
+	fmt.Printf("%x  %s\n", hash.Sum(nil), filename)
+}