python3Packages.dask: fix numpy 2.5 update

Author: CertainLach

pkgs/development/python-modules/dask/default.nix

@@ -54,7 +54,11 @@ buildPythonPackage (finalAttrs: {
     hash = "sha256-JfCiABGSCJKKSz2/r8fvpVwdQSZqvoQICe+lDvuNhoM=";
   };
 
-  postPatch = lib.optionalString stdenv.hostPlatform.isLinux ''
+  postPatch = ''
+    substituteInPlace dask/dataframe/utils.py \
+      --replace-fail '"m": np.timedelta64(1),' '"m": np.timedelta64(1, "us"),'
+  ''
+  + lib.optionalString stdenv.hostPlatform.isLinux ''
     substituteInPlace dask/tests/test_system.py \
       --replace-fail \
         '"taskset",' \