System Gen235 @ 2026-06-19-21:07:09 by jonas@comfy-station

modules/tools/follow-hive-nixpkgs/follow_hive_nixpkgs/lock.py

@@ -0,0 +1,34 @@
+import json
+from pathlib import Path
+import sys
+
+
+def loadNixpkgs(source: Path, nixpkgs: str) -> dict:
+    if not source.exists():
+        print(f"{source} does not exist.")
+        sys.exit(1)
+
+    with source.open(mode="r") as f:
+        src = json.load(f)
+        if nixpkgs not in src["nodes"]:
+            print(f"There is no {nixpkgs} entry in {source}")
+            sys.exit(1)
+        return src["nodes"][nixpkgs]
+
+
+def writeNixpkgs(nixpkgs: dict, target: Path):
+    if not target.exists():
+        print(f"{target} does not exist.")
+        sys.exit(1)
+
+    with target.open(mode="r+") as f:
+        tgt = json.load(f)
+        if "nixpkgs" not in tgt["nodes"]:
+            print(f"There is no nixpkgs entry in {target}")
+            sys.exit(1)
+
+        tgt["nodes"]["nixpkgs"] = nixpkgs
+
+        f.seek(0)
+        json.dump(tgt, f, indent=2)
+        f.truncate()