feat: finish ghostty pane backend integration

1 files changed, 107 insertions, 0 deletions

diff --git a/scripts/vendor_libghostty_vt.py b/scripts/vendor_libghostty_vt.py
new file mode 100644
index 00000000..f53e809b
--- /dev/null
+++ b/scripts/vendor_libghostty_vt.py
@@ -0,0 +1,107 @@
+from __future__ import annotations
+
+import argparse
+import json
+import shutil
+import subprocess
+import tarfile
+import tempfile
+from dataclasses import asdict, dataclass
+from pathlib import Path
+
+
+@dataclass
+class VendorMetadata:
+    source_repo: str
+    source_commit: str
+    dist_archive: str
+    extracted_dir: str
+
+
+def parse_archive_root(archive: Path) -> str:
+    with tarfile.open(archive, "r:gz") as tar:
+        roots = {
+            member.name.split("/", 1)[0]
+            for member in tar.getmembers()
+            if member.name and member.name != "."
+        }
+    if len(roots) != 1:
+        raise ValueError(f"expected exactly one archive root in {archive}, found {sorted(roots)}")
+    return next(iter(roots))
+
+
+def git_head(repo: Path) -> str:
+    return subprocess.check_output(["git", "rev-parse", "HEAD"], cwd=repo, text=True).strip()
+
+
+def ensure_dist_archive(source_repo: Path) -> Path:
+    subprocess.run(
+        ["zig", "build", "dist", "-Demit-lib-vt", "-Doptimize=ReleaseFast"],
+        cwd=source_repo,
+        check=True,
+    )
+    dist_dir = source_repo / "zig-out" / "dist"
+    archives = sorted(dist_dir.glob("libghostty-vt-*.tar.gz"))
+    if not archives:
+        raise FileNotFoundError(f"no libghostty-vt dist archive found in {dist_dir}")
+    return archives[-1]
+
+
+def vendor_libghostty_vt(source_repo: Path, destination: Path) -> VendorMetadata:
+    archive = ensure_dist_archive(source_repo)
+    root = parse_archive_root(archive)
+
+    with tempfile.TemporaryDirectory() as temp_dir:
+        temp_dir_path = Path(temp_dir)
+        with tarfile.open(archive, "r:gz") as tar:
+            tar.extractall(temp_dir_path)
+
+        extracted = temp_dir_path / root
+        if not extracted.exists():
+            raise FileNotFoundError(f"expected extracted root {extracted}")
+
+        if destination.exists():
+            shutil.rmtree(destination)
+        destination.parent.mkdir(parents=True, exist_ok=True)
+        shutil.copytree(extracted, destination)
+
+    return VendorMetadata(
+        source_repo=str(source_repo),
+        source_commit=git_head(source_repo),
+        dist_archive=archive.name,
+        extracted_dir=root,
+    )
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(description="Vendor the pinned libghostty-vt source dist into herdr")
+    parser.add_argument(
+        "--source-repo",
+        default="/home/can/Projects/ghostty",
+        help="Path to a local ghostty checkout",
+    )
+    parser.add_argument(
+        "--destination",
+        default="vendor/libghostty-vt",
+        help="Destination directory for the extracted libghostty-vt source dist",
+    )
+    parser.add_argument(
+        "--metadata",
+        default="vendor/libghostty-vt.vendor.json",
+        help="Path to write vendoring metadata JSON",
+    )
+    args = parser.parse_args()
+
+    repo = Path(args.source_repo).resolve()
+    destination = Path(args.destination).resolve()
+    metadata_path = Path(args.metadata).resolve()
+
+    metadata = vendor_libghostty_vt(repo, destination)
+    metadata_path.parent.mkdir(parents=True, exist_ok=True)
+    metadata_path.write_text(json.dumps(asdict(metadata), indent=2) + "\n")
+
+    print(f"vendored {metadata.extracted_dir} from {metadata.source_commit} into {destination}")
+
+
+if __name__ == "__main__":
+    main()