Fix: Added stable branch to flake and needed packages (#165)

scripts/update-nix-stable.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+import argparse
+import re
+import sys
+
+
+def update_flake(version: str, src_hash: str) -> None:
+    path = "flake.nix"
+    with open(path, "r", encoding="utf-8") as f:
+        content = f.read()
+
+    new_content, n_version = re.subn(
+        r'stableVersion = "[^"]*";',
+        f'stableVersion = "{version}";',
+        content,
+        count=1,
+    )
+    new_content, n_hash = re.subn(
+        r'stableSrcHash = "[^"]*";',
+        f'stableSrcHash = "{src_hash}";',
+        new_content,
+        count=1,
+    )
+
+    if n_version != 1 or n_hash != 1:
+        print(
+            f"Error: expected to update stableVersion and stableSrcHash once each "
+            f"(got version={n_version}, hash={n_hash})",
+            file=sys.stderr,
+        )
+        sys.exit(1)
+
+    with open(path, "w", encoding="utf-8") as f:
+        f.write(new_content)
+
+    print(f"Updated {path}: stableVersion={version} stableSrcHash={src_hash}")
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(
+        description="Update flake.nix stableVersion and stableSrcHash"
+    )
+    parser.add_argument("--version", required=True, help="Stable version without v prefix")
+    parser.add_argument("--src-hash", required=True, help="SRI sha256 of the release source")
+    args = parser.parse_args()
+    update_flake(args.version, args.src_hash)
+
+
+if __name__ == "__main__":
+    main()