Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: fancy-cat 0.4.0 -> 0.6.0 https://repology.org/project/fancy-cat/versions
attrpath: fancy-cat
Checking auto update branch...
No auto update branch exists
[version] 
[version] updated version and sha256
[rustCrateVersion] 
[rustCrateVersion] No cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] skipping because derivation has no updateScript
Diff after rewrites:
diff --git a/pkgs/by-name/fa/fancy-cat/package.nix b/pkgs/by-name/fa/fancy-cat/package.nix
index f9edf039d3e9..76ccbdaf01e8 100644
--- a/pkgs/by-name/fa/fancy-cat/package.nix
+++ b/pkgs/by-name/fa/fancy-cat/package.nix
@@ -16,13 +16,13 @@
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "fancy-cat";
-  version = "0.4.0";
+  version = "0.6.0";
 
   src = fetchFromGitHub {
     owner = "freref";
     repo = "fancy-cat";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-Wasxhsv4QhGscOEsGirabsq92963S8v1vOBWvAFuRoM=";
+    hash = "sha256-p5q4SM0eFwVS9O+gXI6q694j7Cg7KmCqN6t0uPCdMPk=";
   };
 
   patches = [ ./0001-changes.patch ];

Received ExitFailure 1 when running
Raw command: nix-build --option sandbox true --arg config "{ allowUnfree = true; allowAliases = false; }" --arg overlays "[ ]" -A fancy-cat
Received ExitFailure 1 when running
Raw command: nix --extra-experimental-features nix-command log -f . fancy-cat --arg config "{ allowUnfree = true; allowAliases = false; }" --arg overlays "[ ]"
Standard output:

error:
       … in the condition of the assert statement
         at /var/cache/nixpkgs-update/worker/worktree/fancy-cat/lib/customisation.nix:428:9:
          427|       drvPath =
          428|         assert condition;
             |         ^
          429|         drv.drvPath;

       … while evaluating the attribute 'handled'
         at /var/cache/nixpkgs-update/worker/worktree/fancy-cat/pkgs/stdenv/generic/check-meta.nix:722:11:
          721|           valid = if isNull problems.error then "warn" else "no";
          722|           handled = handle {
             |           ^
          723|             inherit attrs meta;

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: Refusing to evaluate package 'fancy-cat-0.6.0' in /var/cache/nixpkgs-update/worker/worktree/fancy-cat/pkgs/by-name/fa/fancy-cat/package.nix:54 because it has problems:
       - broken: This package is broken.

       See also https://nixos.org/manual/nixpkgs/unstable#sec-problems
       To allow evaluation regardless, use:
       - Nixpkgs import: import nixpkgs { config = <below code>; }
       - NixOS: nixpkgs.config = <below code>;
       - nix-* commands: Put below code in ~/.config/nixpkgs/config.nix

         {
           problems.handlers = {
             fancy-cat.broken = "warn"; # or "ignore"
           };
         }