saber: refactor

pkgs/by-name/sa/saber/gitHashes.json

@@ -0,0 +1,4 @@
+{
+  "flutter_secure_storage_linux": "sha256-cFNHW7dAaX8BV7arwbn68GgkkBeiAgPfhMOAFSJWlyY=",
+  "receive_sharing_intent": "sha256-8D5ZENARPZ7FGrdIErxOoV3Ao35/XoQ2tleegI42ZUY="
+}

pkgs/by-name/sa/saber/package.nix

@@ -26,10 +26,7 @@ flutter332.buildFlutterApplication rec {
     hash = "sha256-5N4HojdDysLgCPq614ZzJXx/dx3s4F++W35fjYdevRk=";
   };
 
-  gitHashes = {
-    receive_sharing_intent = "sha256-8D5ZENARPZ7FGrdIErxOoV3Ao35/XoQ2tleegI42ZUY=";
-    flutter_secure_storage_linux = "sha256-cFNHW7dAaX8BV7arwbn68GgkkBeiAgPfhMOAFSJWlyY=";
-  };
+  gitHashes = lib.importJSON ./gitHashes.json;
 
   pubspecLock = lib.importJSON ./pubspec.lock.json;
 
@@ -75,6 +72,10 @@ flutter332.buildFlutterApplication rec {
     updateScript = _experimental-update-script-combinators.sequence [
       (gitUpdater { rev-prefix = "v"; })
       (_experimental-update-script-combinators.copyAttrOutputToFile "saber.pubspecSource" ./pubspec.lock.json)
+      {
+        command = [ ./update-gitHashes.py ];
+        supportedFeatures = [ "silent" ];
+      }
     ];
   };
 

pkgs/by-name/sa/saber/update-gitHashes.py

@@ -0,0 +1,51 @@
+#! /usr/bin/env nix-shell
+#! nix-shell -i python3 -p python3 nix-prefetch-git
+
+import json
+import subprocess
+import sys
+from pathlib import Path
+
+THIS_FOLDER = Path(__file__).parent.resolve()
+PUBSPEC_LOCK = THIS_FOLDER / "pubspec.lock.json"
+GIT_HASHES = THIS_FOLDER / "gitHashes.json"
+
+
+def fetch_git_hash(url: str, rev: str) -> str:
+    result = subprocess.run(
+        ["nix-prefetch-git", "--url", url, "--rev", rev],
+        capture_output=True,
+        text=True,
+        check=True,
+    )
+    return json.loads(result.stdout)["hash"]
+
+
+def main() -> None:
+    if not PUBSPEC_LOCK.exists():
+        sys.exit(1)
+    try:
+        data = json.loads(PUBSPEC_LOCK.read_text())
+    except json.JSONDecodeError:
+        sys.exit(1)
+    output: dict[str, str] = {}
+    for name, info in data.get("packages", {}).items():
+        if info.get("source") != "git":
+            continue
+        desc = info.get("description")
+        if not isinstance(desc, dict):
+            continue
+        url = desc.get("url")
+        rev = desc.get("resolved-ref")
+        if not (isinstance(url, str) and isinstance(rev, str)):
+            continue
+        try:
+            package_hash = fetch_git_hash(url, rev)
+        except subprocess.CalledProcessError:
+            continue
+        output[name] = package_hash
+    GIT_HASHES.write_text(json.dumps(output, indent=2) + "\n")
+
+
+if __name__ == "__main__":
+    main()