improve raylib extension (#573)

Author: aaylward

BUILD.bazel

@@ -38,3 +38,19 @@ buildifier_test(
     no_sandbox = True,
     workspace = "//:MODULE.bazel",
 )
+
+config_setting(
+    name = "is_mac",
+    constraint_values = [
+        "@platforms//cpu:aarch64",
+        "@platforms//os:macos",
+    ],
+)
+
+config_setting(
+    name = "is_linux",
+    constraint_values = [
+        "@platforms//cpu:x86_64",
+        "@platforms//os:linux",
+    ],
+)

MODULE.bazel.lock

@@ -1,24 +0,0 @@
-alias(
-    name = "raylib",
-    actual = select({
-        ":is_linux": "@raylib_linux//:raylib_linux",
-        ":is_mac": "@raylib_macos//:raylib_macos",
-    }),
-    visibility = ["//visibility:public"],
-)
-
-config_setting(
-    name = "is_mac",
-    constraint_values = [
-        "@platforms//cpu:aarch64",
-        "@platforms//os:macos",
-    ],
-)
-
-config_setting(
-    name = "is_linux",
-    constraint_values = [
-        "@platforms//cpu:x86_64",
-        "@platforms//os:linux",
-    ],
-)

bazel/3p/BUILD.bazel

@@ -10,5 +10,8 @@ git_override(
     remote = "https://github.com/hedronvision/bazel-compile-commands-extractor.git",
 )
 
-non_module_deps = use_extension("//bazel/extensions:extensions.bzl", "non_module_deps")
-use_repo(non_module_deps, "mongoose_cc", "raylib_linux", "raylib_macos")
+mongoose_ext = use_extension("//bazel/extensions:mongoose.bzl", "mongoose")
+use_repo(mongoose_ext, "mongoose_cc")
+
+raylib_ext = use_extension("//bazel/extensions:raylib.bzl", "raylib")
+use_repo(raylib_ext, "raylib")

bazel/3p/raylib.BUILD

@@ -0,0 +1,14 @@
+"bzlmod extensions"
+
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+def _http_impl(ctx):  # buildifier: disable=unused-variable
+    http_archive(
+        name = "mongoose_cc",
+        strip_prefix = "mongoose-7.16",
+        sha256 = "f2c42135f7bc34b3d10b6401e9326a20ba5dd42d4721b6a526826ba31c1679fd",
+        urls = ["https://github.com/cesanta/mongoose/archive/refs/tags/7.16.tar.gz"],
+        build_file = "@//bazel/3p:mongoose.BUILD",
+    )
+
+mongoose = module_extension(implementation = _http_impl)

bazel/cc.MODULE.bazel

@@ -0,0 +1,43 @@
+"bzlmod extensions"
+
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+def _http_impl(module_ctx):
+    host_os = module_ctx.os.name
+    host_cpu = module_ctx.os.arch
+
+    if host_os == "mac os x" and host_cpu == "aarch64":
+        url = "https://github.com/raysan5/raylib/releases/download/5.5/raylib-5.5_macos.tar.gz"
+        sha256 = "930c67b676963c6cffbd965814664523081ecbf3d30fc9df4211d0064aa6ba39"
+        shared_lib = "libraylib.550.dylib"
+        strip_prefix = "raylib-5.5_macos"
+    elif host_os == "linux" and host_cpu == "amd64":
+        url = "https://github.com/raysan5/raylib/releases/download/5.5/raylib-5.5_linux_amd64.tar.gz"
+        sha256 = "3d95ef03d5b38dfa55c0a16ca122d382134b078f0e5b270b52fe7eae0549c000"
+        shared_lib = "libraylib.so"
+        strip_prefix = "raylib-5.5_linux_amd64"
+    else:
+        fail("Unsupported host OS or CPU: {} {}".format(host_os, host_cpu))
+
+    http_archive(
+        name = "raylib",
+        url = url,
+        sha256 = sha256,
+        strip_prefix = strip_prefix,
+        build_file_content = """\
+load("@rules_cc//cc:defs.bzl", "cc_import")
+
+cc_import(
+    name = "raylib",
+    hdrs = [
+        "include/raylib.h",
+        "include/raymath.h",
+        "include/rlgl.h",
+    ],
+    shared_library = "lib/{}",
+    visibility = ["//visibility:public"],
+)
+        """.format(shared_lib),
+    )
+
+raylib = module_extension(implementation = _http_impl)

bazel/extensions/extensions.bzl

@@ -4,6 +4,6 @@ cc_binary(
     name = "example_raylib",
     srcs = ["main.cc"],
     deps = [
-        "//bazel/3p:raylib",
+        "@raylib",
     ],
 )