Add release changes to workflow.

.github/workflows/release.yml

@@ -122,6 +122,7 @@ jobs:
         with:
           name: prebuilt-ubuntu
           path: crates/zng-view-prebuilt/lib/libzng_view.so
+          
   prebuild-windows:
     runs-on: windows-latest
     needs: [check-windows]
@@ -225,6 +226,11 @@ jobs:
     needs: [check-ubuntu]
     steps:
       - uses: actions/checkout@v4
+      - run: cargo do latest_release_changes release-changes.md
+      - uses: actions/upload-artifact@v4
+        with:
+          name: release-changes.md
+          path: release-changes.md
       - run: cargo do doc
       - uses: actions/upload-artifact@v4
         with:
@@ -355,6 +361,9 @@ jobs:
     permissions:
       contents: write
     steps:
+      - uses: actions/download-artifact@v4
+        with:
+          name: release-changes.md
       - uses: actions/download-artifact@v4
         with:
           name: prebuilt-ubuntu
@@ -379,6 +388,7 @@ jobs:
         with:
           tag: ${{ needs.tag.outputs.tag_name }}
           artifacts: "prebuilt/*"
+          bodyFile: release-changes.md
 
   publish-doc:
     runs-on: ubuntu-latest
@@ -424,4 +434,5 @@ jobs:
           name: |
             prebuilt-*
             doc
+            release-changes.md
           failOnError: false

tools/do-tasks/src/main.rs

@@ -26,6 +26,7 @@ fn main() {
         "semver_check" => semver_check(args),
         "publish_version_tag" => publish_version_tag(args),
         "comment_feature" => comment_feature(args),
+        "latest_release_changes" => latest_release_changes(args),
         "version" => version(args),
         "ls" => ls(args),
         "help" | "--help" => help(args),
@@ -1250,6 +1251,37 @@ fn comment_feature(mut args: Vec<&str>) {
     }
 }
 
+// used by `workflows/release.yml`
+fn latest_release_changes(args: Vec<&str>) {
+    let changelog = match std::fs::read_to_string("CHANGELOG.md") {
+        Ok(c) => c,
+        Err(e) => fatal(f!("failed to read CHANGELOG.md, {e}")),
+    };
+
+    let mut changes = String::new();
+    let mut started = false;
+    for line in changelog.lines().skip(1) {
+        if line.starts_with("# ") {
+            if started {
+                break;
+            }
+            started = true;
+        } else if started {
+            changes.push_str(line);
+            changes.push('\n');
+        }
+    }
+    let changes = changes.trim();
+
+    if let Some(out) = args.first() {
+        if let Err(e) = std::fs::write(out, changes.as_bytes()) {
+            fatal(f!("failed to write changes, {e}"));
+        }
+    } else {
+        println(changes)
+    }
+}
+
 // do version
 //    Prints version of Rust and components.
 // USAGE: