xhtml1 2002-08-01 -> 20020801 https://repology.org/project/xhtml1/versions
attrpath: xhtml1
Checking auto update branch...
No auto update branch exists
[version] 
[version] updated version and sha256
[rustCrateVersion] 
[rustCrateVersion] No cargoSha256 or cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorSha256 or vendorHash
[updateScript] 
[updateScript] skipping because derivation has no updateScript

[quotedUrls]
[quotedUrls] nothing found to replace
Diff after rewrites:
diff --git a/pkgs/data/sgml+xml/schemas/xml-dtd/xhtml1/default.nix b/pkgs/data/sgml+xml/schemas/xml-dtd/xhtml1/default.nix
index 9a81fbb6e1b..6fcf4ec9e76 100644
--- a/pkgs/data/sgml+xml/schemas/xml-dtd/xhtml1/default.nix
+++ b/pkgs/data/sgml+xml/schemas/xml-dtd/xhtml1/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation {
   pname = "xhtml1";
-  version = "unstable-2002-08-01";
+  version = "unstable-20020801";
 
   src = fetchurl {
     url = "https://www.w3.org/TR/xhtml1/xhtml1.tgz";
-    sha256 = "0rr0d89i0z75qvjbm8il93bippx09hbmjwy0y2sj44n9np69x3hl";
+    sha256 = "sha256-FI6ezLXJEiK18MBzWRdMoN8b10g0orrkxuV8EBNqIGc=";
   };
 
   nativeBuildInputs = [ libxml2 ];

Source url did not change.