From 0a11177ede2f052db42e9f425f3692558c849793 Mon Sep 17 00:00:00 2001
From: Natalie Weizenbaum <nweiz@google.com>
Date: Mon, 12 Feb 2024 15:54:17 -0800
Subject: [PATCH 1/2] Update the language revision in Homebrew on release

---
 pubspec.yaml    |  2 +-
 tool/grind.dart | 29 +++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/pubspec.yaml b/pubspec.yaml
index 296270dfc..33a7c8c66 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -14,7 +14,7 @@ dependencies:
   args: ^2.0.0
   async: ^2.5.0
   charcode: ^1.2.0
-  cli_pkg: ^2.7.1
+  cli_pkg: ^2.8.0
   cli_repl: ^0.2.1
   collection: ^1.16.0
   http: "^1.1.0"
diff --git a/tool/grind.dart b/tool/grind.dart
index 92f919deb..e5705747a 100644
--- a/tool/grind.dart
+++ b/tool/grind.dart
@@ -29,6 +29,7 @@ void main(List<String> args) {
   pkg.chocolateyNuspec.value = _nuspec;
   pkg.homebrewRepo.value = "sass/homebrew-sass";
   pkg.homebrewFormula.value = "Formula/sass.rb";
+  pkg.homebrewEditFormula.value = _updateHomebrewLanguageRevision;
   pkg.jsRequires.value = [
     pkg.JSRequire("immutable", target: pkg.JSRequireTarget.all),
     pkg.JSRequire("chokidar", target: pkg.JSRequireTarget.cli),
@@ -292,3 +293,31 @@ function defaultExportDeprecation() {
 
   File("build/npm/sass.node.mjs").writeAsStringSync(buffer.toString());
 }
+
+/// A regular expression to locate the language repo revision in the Dart Sass
+/// Homebrew formula.
+final _homebrewLanguageRegExp = RegExp(
+    r'resource "language" do$'
+    r'(?:(?! end$).)+'
+    r'revision: "([a-f0-9]{40})"',
+    dotAll: true,
+    multiLine: true);
+
+/// Updates the Homebrew [formula] to change the revision of the language repo
+/// to the latest revision.
+String _updateHomebrewLanguageRevision(String formula) {
+  var languageRepoRevision = run("git",
+          arguments: ["ls-remote", "https://github.com/sass/sass"],
+          quiet: true)
+      .split("\t")
+      .first;
+
+  var match = _homebrewLanguageRegExp.firstMatch(formula);
+  if (match == null) {
+    fail("Couldn't find a language repo revision in the Homebrew formula.");
+  }
+
+  return formula.substring(0, match.start) +
+      match.group(0)!.replaceFirst(match.group(1)!, languageRepoRevision) +
+      formula.substring(match.end);
+}

From 3f6792e5e6102079e5782c2b28280ee6ecffd026 Mon Sep 17 00:00:00 2001
From: Natalie Weizenbaum <nweiz@google.com>
Date: Mon, 12 Feb 2024 15:58:15 -0800
Subject: [PATCH 2/2] Reformat

---
 tool/grind.dart | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tool/grind.dart b/tool/grind.dart
index e5705747a..fd6792926 100644
--- a/tool/grind.dart
+++ b/tool/grind.dart
@@ -307,8 +307,7 @@ final _homebrewLanguageRegExp = RegExp(
 /// to the latest revision.
 String _updateHomebrewLanguageRevision(String formula) {
   var languageRepoRevision = run("git",
-          arguments: ["ls-remote", "https://github.com/sass/sass"],
-          quiet: true)
+          arguments: ["ls-remote", "https://github.com/sass/sass"], quiet: true)
       .split("\t")
       .first;