rules_m4 v0.2.3

Release checksums:

10ce41f150ccfbfddc9d2394ee680eb984dc8a3dfea613afd013cfb22ea7445c  rules_m4-v0.2.3.tar.xz
e4baf78ff4ae5d4ab2e471e79c7c0667bd6e1535d10de54909226510d4258af4  rules_m4-v0.2.3.tar.zst

WORKSPACE snippet:

load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

http_archive(
    name = "rules_m4",
    sha256 = "10ce41f150ccfbfddc9d2394ee680eb984dc8a3dfea613afd013cfb22ea7445c",
    urls = ["https://github.com/jmillikin/rules_m4/releases/download/v0.2.3/rules_m4-v0.2.3.tar.xz"],
)

load("@rules_m4//m4:m4.bzl", "m4_register_toolchains")

m4_register_toolchains(version = "1.4.18")