rules_nixpkgs_core.patch

diff --git a/MODULE.bazel b/MODULE.bazel
index e7d3864..971a572 100644
--- a/MODULE.bazel
+++ b/MODULE.bazel
@@ -3,8 +3,8 @@ module(
     version = "0.13.0",
 )
 
-bazel_dep(name = "platforms", version = "0.0.4")
-bazel_dep(name = "bazel_skylib", version = "1.0.3")
+bazel_dep(name = "platforms", version = "1.0.0")
+bazel_dep(name = "bazel_skylib", version = "1.8.2")
 
 nix_repo = use_extension("//extensions:repository.bzl", "nix_repo")
 nix_repo.github(
diff --git a/platforms/BUILD.bazel b/platforms/BUILD.bazel
index c4d0fab..6f07f15 100644
--- a/platforms/BUILD.bazel
+++ b/platforms/BUILD.bazel
@@ -1,6 +1,6 @@
 platform(
     name = "host",
     constraint_values = ["@rules_nixpkgs_core//constraints:support_nix"],
-    parents = ["@local_config_platform//:host"],
+    parents = ["@platforms//host"],
     visibility = ["//visibility:public"],
 )
diff --git a/util.bzl b/util.bzl
index 87cf8a4..abe51c9 100644
--- a/util.bzl
+++ b/util.bzl
@@ -1,6 +1,43 @@
 load("@bazel_skylib//lib:paths.bzl", "paths")
 load("@bazel_skylib//lib:versions.bzl", "versions")
-load("//private/cc_toolchain:lib_cc_configure.bzl", "get_cpu_value")
+
+# Taken from @rules_cc/cc/private/toolchain/lib_cc_configure.bzl:get_cpu_value
+def _get_cpu_value(repository_ctx):
+    """Compute the cpu_value based on the OS name. Doesn't %-escape the result!
+
+    Args:
+      repository_ctx: The repository context.
+    Returns:
+      One of (darwin, freebsd, x64_windows, ppc, s390x, arm, aarch64, k8, piii)
+    """
+    os_name = repository_ctx.os.name
+    arch = repository_ctx.os.arch
+    if os_name.startswith("mac os"):
+        # Check if we are on x86_64 or arm64 and return the corresponding cpu value.
+        return "darwin_" + ("arm64" if arch == "aarch64" else "x86_64")
+    if os_name.find("freebsd") != -1:
+        return "freebsd"
+    if os_name.find("openbsd") != -1:
+        return "openbsd"
+    if os_name.find("windows") != -1:
+        if arch == "aarch64":
+            return "arm64_windows"
+        else:
+            return "x64_windows"
+
+    if arch in ["power", "ppc64le", "ppc", "ppc64"]:
+        return "ppc"
+    if arch in ["s390x"]:
+        return "s390x"
+    if arch in ["mips64"]:
+        return "mips64"
+    if arch in ["riscv64"]:
+        return "riscv64"
+    if arch in ["arm", "armv7l"]:
+        return "arm"
+    if arch in ["aarch64"]:
+        return "aarch64"
+    return "k8" if arch in ["amd64", "x86_64", "x64"] else "piii"
 
 def fail_on_err(return_value, prefix = None):
     """Fail if the given return value indicates an error.
@@ -145,7 +182,7 @@ def default_constraints(repository_ctx):
     Returns:
       A list containing the cpu and os constraints.
     """
-    cpu_value = get_cpu_value(repository_ctx)
+    cpu_value = _get_cpu_value(repository_ctx)
     cpu = {
         "darwin": "@platforms//cpu:x86_64",
         "darwin_x86_64": "@platforms//cpu:x86_64",