[WIP] add bazelisk support for windows-arm64

BUILD

@@ -151,6 +151,16 @@ go_binary(
     visibility = ["//visibility:public"],
 )
 
+go_binary(
+    name = "bazelisk-windows-arm64",
+    out = "bazelisk-windows_arm64.exe",
+    embed = [":go_default_library"],
+    goarch = "arm64",
+    goos = "windows",
+    pure = "on",
+    visibility = ["//visibility:public"],
+)
+
 genrule(
     name = "bazelisk-darwin-amd64-for-npm",
     srcs = [":bazelisk-darwin-amd64"],
@@ -191,6 +201,14 @@ genrule(
     output_to_bindir = 1,
 )
 
+genrule(
+    name = "bazelisk-windows-arm64-for-npm",
+    srcs = [":bazelisk-windows-arm64"],
+    outs = ["bazelisk-windows_arm64.exe"],
+    cmd = "cp $(location :bazelisk-windows-arm64) \"$@\"",
+    output_to_bindir = 1,
+)
+
 pkg_npm(
     name = "npm_package",
     srcs = [

WORKSPACE

@@ -50,7 +50,7 @@ go_repository(
 
 go_rules_dependencies()
 
-go_register_toolchains(version = "1.16.4")
+go_register_toolchains(version = "1.17.1")
 
 gazelle_dependencies()
 

bazelisk.py

@@ -207,9 +207,9 @@ def determine_executable_filename_suffix():
 
 def determine_bazel_filename(version):
     machine = normalized_machine_arch_name()
-    if machine != "x86_64":
+    if machine not in ["x86_64", "arm64"]:
         raise Exception(
-            'Unsupported machine architecture "{}". Bazel currently only supports x86_64.'.format(
+            'Unsupported machine architecture "{}". Bazel currently only supports x86_64 and arm64.'.format(
                 machine
             )
         )
@@ -227,6 +227,8 @@ def normalized_machine_arch_name():
     machine = platform.machine().lower()
     if machine == "amd64":
         machine = "x86_64"
+    elif machine == "ARM64":
+        machine = "arm64"
     return machine
 
 

build.sh

@@ -27,7 +27,9 @@ go build
     //:bazelisk-darwin-universal \
     //:bazelisk-linux-amd64 \
     //:bazelisk-linux-arm64 \
-    //:bazelisk-windows-amd64
+    //:bazelisk-windows-amd64 \
+    //:bazelisk-windows-arm64
+
 echo
 
 cp bazel-out/*-opt-*/bin/bazelisk-darwin_amd64 bin/bazelisk-darwin-amd64
@@ -36,6 +38,8 @@ cp bazel-out/*-opt/bin/bazelisk-darwin_universal bin/bazelisk-darwin
 cp bazel-out/*-opt-*/bin/bazelisk-linux_amd64 bin/bazelisk-linux-amd64
 cp bazel-out/*-opt-*/bin/bazelisk-linux_arm64 bin/bazelisk-linux-arm64
 cp bazel-out/*-opt-*/bin/bazelisk-windows_amd64.exe bin/bazelisk-windows-amd64.exe
+cp bazel-out/*-opt-*/bin/bazelisk-windows_arm64.exe bin/bazelisk-windows-arm64.exe
+
 rm -f bazelisk
 
 ### Build release artifacts using `go build`.
@@ -45,6 +49,7 @@ rm -f bazelisk
 # GOOS=darwin GOARCH=arm64 go build -o bin/bazelisk-darwin-arm64
 # lipo -create -output bin/bazelisk-darwin bin/bazelisk-darwin-amd64 bin/bazelisk-darwin-arm64
 # GOOS=windows GOARCH=amd64 go build -o bin/bazelisk-windows-amd64.exe
+# GOOS=windows GOARCH=arm64 go build -o bin/bazelisk-windows-arm64.exe
 
 ### Print some information about the generated binaries.
 echo "== Bazelisk binaries are ready =="