Flake update; hanging issue troubleshooting

flake.lock

@@ -202,11 +202,11 @@
         "utils": "utils"
       },
       "locked": {
-        "lastModified": 1765938481,
-        "narHash": "sha256-Pck7/jhaoYAUM9M0nWR/dwYEVwXXNP2bzB4+XtZBmno=",
+        "lastModified": 1772578082,
+        "narHash": "sha256-H4PLUC9xb2kdDs4r/VaiRq7rrK/gM+WFuHnRIP78H+U=",
         "owner": "aristanetworks",
         "repo": "nix-serve-ng",
-        "rev": "8ce0104efdf7f72e5a371bc48613084673b23cc0",
+        "rev": "e8218eb1c912a800ea77ae7edd71db4ee379a7dd",
         "type": "github"
       },
       "original": {
@@ -341,11 +341,11 @@
     },
     "nixpkgs-lib": {
       "locked": {
-        "lastModified": 1769909678,
-        "narHash": "sha256-cBEymOf4/o3FD5AZnzC3J9hLbiZ+QDT/KDuyHXVJOpM=",
+        "lastModified": 1772328832,
+        "narHash": "sha256-e+/T/pmEkLP6BHhYjx6GmwP5ivonQQn0bJdH9YrRB+Q=",
         "owner": "nix-community",
         "repo": "nixpkgs.lib",
-        "rev": "72716169fe93074c333e8d0173151350670b824c",
+        "rev": "c185c7a5e5dd8f9add5b2f8ebeff00888b070742",
         "type": "github"
       },
       "original": {
@@ -468,11 +468,11 @@
     },
     "nixpkgs_6": {
       "locked": {
-        "lastModified": 1772047000,
-        "narHash": "sha256-7DaQVv4R97cii/Qdfy4tmDZMB2xxtyIvNGSwXBBhSmo=",
+        "lastModified": 1772822230,
+        "narHash": "sha256-yf3iYLGbGVlIthlQIk5/4/EQDZNNEmuqKZkQssMljuw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "1267bb4920d0fc06ea916734c11b0bf004bbe17e",
+        "rev": "71caefce12ba78d84fe618cf61644dce01cf3a96",
         "type": "github"
       },
       "original": {
@@ -486,11 +486,11 @@
         "nixpkgs-lib": "nixpkgs-lib"
       },
       "locked": {
-        "lastModified": 1769996383,
-        "narHash": "sha256-AnYjnFWgS49RlqX7LrC4uA+sCCDBj0Ry/WOJ5XWAsa0=",
+        "lastModified": 1772408722,
+        "narHash": "sha256-rHuJtdcOjK7rAHpHphUb1iCvgkU3GpfvicLMwwnfMT0=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "57928607ea566b5db3ad13af0e57e921e6b12381",
+        "rev": "f20dc5d9b8027381c474144ecabc9034d6a839a3",
         "type": "github"
       },
       "original": {