up

packages/bcachefs/default.nix

@@ -24,22 +24,25 @@
   installShellFiles,
   fuseSupport ? false,
   udevCheckHook,
+  namespace,
 }:
+let
+  inherit (lib.trivial) importJSON;
+  inherit (lib.${namespace}) selectVariant mkAllSources;
 
+  versionSpec = importJSON ./version.json;
+  selected = selectVariant versionSpec null null;
+  sources = mkAllSources selected;
+in
 stdenv.mkDerivation (finalAttrs: {
   pname = "bcachefs-tools";
   version = "1.36.1";
 
-  src = fetchFromGitHub {
-    owner = "koverstreet";
-    repo = "bcachefs-tools";
-    tag = "v${finalAttrs.version}";
-    hash = "sha256-15Z1lHNeXTToDpdVc/YB5ojhoiB5qdgWs47O1aKoyFM=";
-  };
+  src = sources.bcachefs-tools;
 
   cargoDeps = rustPlatform.fetchCargoVendor {
     inherit (finalAttrs) src;
-    hash = "sha256-YWsJUSgKNkK9W4Yuolix21bRRFSF01+sivoj7SJo7DY=";
+    hash = sources.cargoDeps.hash;
   };
 
   postPatch = ''

packages/bcachefs/version.json

@@ -0,0 +1,16 @@
+{
+    "schemaVersion": 1,
+    "sources": {
+      "bcachefs-tools": {
+        "fetcher": "git",
+        "url": "https://github.com/koverstreet/bcachefs-tools",
+        "tag": "1.36.1",
+        "hash": "sha256-15Z1lHNeXTToDpdVc/YB5ojhoiB5qdgWs47O1aKoyFM=",
+        "cargoHash": "sha256-YWsJUSgKNkK9W4Yuolix21bRRFSF01+sivoj7SJo7DY="
+      },
+      "cargoDeps": {
+        "hash": "sha256-YWsJUSgKNkK9W4Yuolix21bRRFSF01+sivoj7SJo7DY="
+      }
+    }
+  }
+