diff --git a/pkgs/by-name/op/opencollada/package.nix b/pkgs/by-name/op/opencollada/package.nix
index 85a69f825868..b5d8cddae639 100644
--- a/pkgs/by-name/op/opencollada/package.nix
+++ b/pkgs/by-name/op/opencollada/package.nix
@@ -1,7 +1,8 @@
 {
   cmake,
+  dos2unix,
   fetchFromGitHub,
-  fetchurl,
+  fetchpatch,
   lib,
   libxml2,
   pcre,
@@ -20,13 +21,28 @@ stdenv.mkDerivation rec {
     sha256 = "1ym16fxx9qhf952vva71sdzgbm7ifis0h1n5fj1bfdj8zvvkbw5w";
   };
 
-  patches = [
-    ./pcre.patch
+  # Fix freaky dos-style CLRF things
+  prePatch = ''
+    dos2unix CMakeLists.txt
+  '';
 
+  patches = [
     # fix build with gcc 13
-    (fetchurl {
+    (fetchpatch {
       url = "https://gitweb.gentoo.org/repo/gentoo.git/plain/media-libs/opencollada/files/opencollada-1.6.68-gcc13.patch?id=b76590f9fb8615da3da9d783ad841c0e3881a27b";
-      hash = "sha256-uimeLGHgXaFi61mmoaloJ5vo83c8EIQmtHEMngC2Nq4=";
+      hash = "sha256-oi/QhNPRnuSHfJJ071/3wnjLeg4zZUL6NwSGYvgkb/k=";
+    })
+
+    # fix pcre
+    (fetchpatch {
+      url = "https://gitweb.gentoo.org/repo/gentoo.git/plain/media-libs/opencollada/files/opencollada-1.6.63-pcre-fix.patch";
+      hash = "sha256-igrwgmNwDKYwj6xWvWrryT5ARWJpztVmlQ0HCLQn5+Q=";
+    })
+
+    # fix build with cmake 4
+    (fetchpatch {
+      url = "https://gitweb.gentoo.org/repo/gentoo.git/plain/media-libs/opencollada/files/opencollada-1.6.68-cmake4.patch?id=42f1e0614c4d056841fdc162c29a04ff0e910139";
+      hash = "sha256-gbF6PPalJGgXGu4W7EptYeDq8418JdGH50LIqKqGKX0=";
     })
   ];
 
@@ -43,6 +59,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [
     cmake
     pkg-config
+    dos2unix
   ];
 
   propagatedBuildInputs = [
diff --git a/pkgs/by-name/op/opencollada/pcre.patch b/pkgs/by-name/op/opencollada/pcre.patch
deleted file mode 100644
index 39408f5a61e3..000000000000
--- a/pkgs/by-name/op/opencollada/pcre.patch
+++ /dev/null
@@ -1,14 +0,0 @@
-diff --git a/COLLADABaseUtils/include/COLLADABUPcreCompiledPattern.h b/COLLADABaseUtils/include/COLLADABUPcreCompiledPattern.h
-index 22f2598b..269c50ca 100644
---- a/COLLADABaseUtils/include/COLLADABUPcreCompiledPattern.h
-+++ b/COLLADABaseUtils/include/COLLADABUPcreCompiledPattern.h
-@@ -13,8 +13,7 @@
- 
- #include "COLLADABUPrerequisites.h"
- 
--struct real_pcre;
--typedef struct real_pcre pcre;
-+#include "pcre.h"
- 
- 
- namespace COLLADABU