From 5d3f444f49f5bb542acec01f6cb3b0384bb945db Mon Sep 17 00:00:00 2001
From: lelgenio <lelgenio@disroot.org>
Date: Sat, 20 Jan 2024 18:31:05 -0300
Subject: [PATCH] dart-sass: add passthru.updateScript

---
 .../tools/misc/dart-sass/default.nix          | 58 ++++++++++---------
 .../tools/misc/dart-sass/update.sh            | 45 ++++++++++++++
 2 files changed, 77 insertions(+), 26 deletions(-)
 create mode 100755 pkgs/development/tools/misc/dart-sass/update.sh

diff --git a/pkgs/development/tools/misc/dart-sass/default.nix b/pkgs/development/tools/misc/dart-sass/default.nix
index 14fef3a3306a..54c7f0aa18de 100644
--- a/pkgs/development/tools/misc/dart-sass/default.nix
+++ b/pkgs/development/tools/misc/dart-sass/default.nix
@@ -10,10 +10,12 @@
 }:
 
 let
-  sass-language = fetchFromGitHub {
+  embedded-protocol-version = "2.3.0";
+
+  embedded-protocol = fetchFromGitHub {
     owner = "sass";
     repo = "sass";
-    rev = "refs/tags/embedded-protocol-2.3.0";
+    rev = "refs/tags/embedded-protocol-${embedded-protocol-version}";
     hash = "sha256-J2heASfIwj4lxjsRs/0zRHSaF2tij9bO7IgXp0u/eiI=";
   };
 in
@@ -37,7 +39,7 @@ buildDartApplication rec {
 
   preConfigure = ''
     mkdir -p build
-    ln -s ${sass-language} build/language
+    ln -s ${embedded-protocol} build/language
     HOME="$TMPDIR" buf generate
   '';
 
@@ -51,31 +53,35 @@ buildDartApplication rec {
     maintainers = with maintainers; [ lelgenio ];
   };
 
-  passthru.tests = {
-    version = testers.testVersion {
-      package = dart-sass;
-      command = "dart-sass --version";
-    };
+  passthru = {
+    inherit embedded-protocol-version embedded-protocol;
+    updateScript = ./update.sh;
+    tests = {
+      version = testers.testVersion {
+        package = dart-sass;
+        command = "dart-sass --version";
+      };
 
-    simple = testers.testEqualContents {
-      assertion = "dart-sass compiles a basic scss file";
-      expected = writeText "expected" ''
-        body h1{color:#123}
-      '';
-      actual = runCommand "actual"
-        {
-          nativeBuildInputs = [ dart-sass ];
-          base = writeText "base" ''
-            body {
-              $color: #123;
-              h1 {
-                color: $color;
+      simple = testers.testEqualContents {
+        assertion = "dart-sass compiles a basic scss file";
+        expected = writeText "expected" ''
+          body h1{color:#123}
+        '';
+        actual = runCommand "actual"
+          {
+            nativeBuildInputs = [ dart-sass ];
+            base = writeText "base" ''
+              body {
+                $color: #123;
+                h1 {
+                  color: $color;
+                }
               }
-            }
-          '';
-        } ''
-        dart-sass --style=compressed $base > $out
-      '';
+            '';
+          } ''
+          dart-sass --style=compressed $base > $out
+        '';
+      };
     };
   };
 }
diff --git a/pkgs/development/tools/misc/dart-sass/update.sh b/pkgs/development/tools/misc/dart-sass/update.sh
new file mode 100755
index 000000000000..595349e1387c
--- /dev/null
+++ b/pkgs/development/tools/misc/dart-sass/update.sh
@@ -0,0 +1,45 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p yq ripgrep common-updater-scripts dart
+
+set -xeu -o pipefail
+
+PACKAGE_DIR="$(realpath "$(dirname "$0")")"
+cd "$PACKAGE_DIR/.."
+while ! test -f default.nix; do cd .. ; done
+NIXPKGS_DIR="$PWD"
+
+dart_sass_version="$(
+  list-git-tags --url=https://github.com/sass/dart-sass \
+  | rg '^\d' \
+  | sort --version-sort \
+  | tail -n1
+)"
+
+embedded_protocol_version="$(
+  list-git-tags --url=https://github.com/sass/sass \
+  | rg '^embedded-protocol-(.*)' -r '$1' \
+  | sort --version-sort \
+  | tail -n1
+)"
+
+cd "$NIXPKGS_DIR"
+update-source-version dart-sass "$dart_sass_version"
+update-source-version dart-sass "$embedded_protocol_version" \
+  --version-key=embedded-protocol-version \
+  --source-key=embedded-protocol
+
+TMPDIR="$(mktemp -d)"
+cd "$TMPDIR"
+
+src="$(nix-build --no-link "$NIXPKGS_DIR" -A dart-sass.src)"
+cp $src/pubspec.* .
+
+# Maybe one day upstream will ship a pubspec.lock,
+# until then we must generate a fresh one
+if ! test -f pubspec.lock; then
+  dart pub update
+fi
+
+yq . pubspec.lock > "$PACKAGE_DIR/pubspec.lock.json"
+
+rm -rf "$TMPDIR"