diff --git a/pkgs/development/libraries/wxwidgets/wxGTK32.nix b/pkgs/development/libraries/wxwidgets/wxGTK32.nix
index 33351e28a7d8..84263f4c2f4e 100644
--- a/pkgs/development/libraries/wxwidgets/wxGTK32.nix
+++ b/pkgs/development/libraries/wxwidgets/wxGTK32.nix
@@ -1,5 +1,6 @@
 { lib
 , stdenv
+, curl
 , expat
 , fetchFromGitHub
 , gst_all_1
@@ -70,6 +71,7 @@ stdenv.mkDerivation rec {
     zlib
     pcre2
   ] ++ lib.optionals stdenv.hostPlatform.isLinux [
+    curl
     gtk3
     libSM
     libXinerama
@@ -102,6 +104,7 @@ stdenv.mkDerivation rec {
     "--with-nanosvg"
     "--disable-rpath"
     "--enable-repro-build"
+    "--enable-webrequest"
     (if compat28 then "--enable-compat28" else "--disable-compat28")
     (if compat30 then "--enable-compat30" else "--disable-compat30")
   ] ++ lib.optional unicode "--enable-unicode"
@@ -109,6 +112,9 @@ stdenv.mkDerivation rec {
   ++ lib.optionals stdenv.hostPlatform.isDarwin [
     "--with-osx_cocoa"
     "--with-libiconv"
+    "--with-urlsession" # for wxWebRequest
+  ] ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
+    "--with-libcurl" # for wxWebRequest
   ] ++ lib.optionals withWebKit [
     "--enable-webview"
     "--enable-webviewwebkit"
diff --git a/pkgs/games/doom-ports/slade/default.nix b/pkgs/games/doom-ports/slade/default.nix
index bae685ccac47..a388922e168a 100644
--- a/pkgs/games/doom-ports/slade/default.nix
+++ b/pkgs/games/doom-ports/slade/default.nix
@@ -20,20 +20,15 @@
 
 stdenv.mkDerivation rec {
   pname = "slade";
-  version = "3.2.5";
+  version = "3.2.6";
 
   src = fetchFromGitHub {
     owner = "sirjuddington";
     repo = "SLADE";
     rev = version;
-    sha256 = "sha256-FBpf1YApwVpWSpUfa2LOrkS1Ef34sKCIZ6ic+Pczs14=";
+    hash = "sha256-pcWmv1fnH18X/S8ljfHxaL1PjApo5jyM8W+WYn+/7zI=";
   };
 
-  postPatch = ''
-    substituteInPlace dist/CMakeLists.txt \
-      --replace "PK3_OUTPUT" "PK3_DESTINATION"
-  '';
-
   nativeBuildInputs = [
     cmake
     pkg-config
@@ -57,7 +52,6 @@ stdenv.mkDerivation rec {
 
   cmakeFlags = [
     "-DwxWidgets_LIBRARIES=${wxGTK}/lib"
-    "-DBUILD_PK3=ON"
   ];
 
   env.NIX_CFLAGS_COMPILE = "-Wno-narrowing";
@@ -71,7 +65,7 @@ stdenv.mkDerivation rec {
   meta = with lib; {
     description = "Doom editor";
     homepage = "http://slade.mancubus.net/";
-    license = licenses.gpl2Plus;
+    license = licenses.gpl2Only; # https://github.com/sirjuddington/SLADE/issues/1754
     platforms = platforms.linux;
     maintainers = with maintainers; [ abbradar ];
   };
diff --git a/pkgs/games/doom-ports/slade/git.nix b/pkgs/games/doom-ports/slade/git.nix
index db85d405f8c5..c5abf8a04bb2 100644
--- a/pkgs/games/doom-ports/slade/git.nix
+++ b/pkgs/games/doom-ports/slade/git.nix
@@ -15,29 +15,27 @@
 , glew
 , lua
 , mpg123
+, wrapGAppsHook3
 , unstableGitUpdater
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   pname = "slade";
-  version = "3.2.4-unstable-2023-09-30";
+  version = "3.2.6-unstable-2024-11-26";
 
   src = fetchFromGitHub {
     owner = "sirjuddington";
     repo = "SLADE";
-    rev = "d05af4bd3a9a655dfe17d02760bab3542cc0b909";
-    sha256 = "sha256-lzTSE0WH+4fOad9E/pL3LDc4L151W0hFEmD0zsS0gpQ=";
+    rev = "f8ca52edf98e649c6455f6cc32f7aa361e41babe";
+    hash = "sha256-h43kYVLDxr1Z3vKJ+IZaDmvkerUdGJFLzJrPj0b2VUI=";
   };
 
-  postPatch = lib.optionalString (!stdenv.hostPlatform.isx86) ''
-    sed -i '/-msse/d' src/CMakeLists.txt
-  '';
-
   nativeBuildInputs = [
     cmake
     pkg-config
     which
     zip
+    wrapGAppsHook3
   ];
 
   buildInputs = [
@@ -59,6 +57,12 @@ stdenv.mkDerivation rec {
 
   env.NIX_CFLAGS_COMPILE = "-Wno-narrowing";
 
+  preFixup = ''
+    gappsWrapperArgs+=(
+      --prefix GDK_BACKEND : x11
+    )
+  '';
+
   passthru.updateScript = unstableGitUpdater {
     url = "https://github.com/sirjuddington/SLADE.git";
   };
@@ -66,7 +70,7 @@ stdenv.mkDerivation rec {
   meta = with lib; {
     description = "Doom editor";
     homepage = "http://slade.mancubus.net/";
-    license = licenses.gpl2Plus;
+    license = licenses.gpl2Only; # https://github.com/sirjuddington/SLADE/issues/1754
     platforms = platforms.linux;
     maintainers = with maintainers; [ ertes ];
   };
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 533770edd13c..63910bd6cd83 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -16523,31 +16523,13 @@ with pkgs;
   enyo-launcher = libsForQt5.callPackage ../games/doom-ports/enyo-launcher { };
 
   slade = callPackage ../games/doom-ports/slade {
-    wxGTK = (wxGTK32.overrideAttrs {
-      patches = [
-       (fetchpatch { # required to run slade 3.2.4 on wxGTK 3.2.4, see PR #266945
-         url = "https://github.com/wxWidgets/wxWidgets/commit/425d9455e8307c1267a79d47d77e3dafeb4d86de.patch";
-         excludes = [ "docs/changes.txt" ];
-         revert = true;
-         hash = "sha256-6LOYLDLtVCHxNdHAWv3zhlCsljIpi//RJb9XVLGD5hM=";
-       })
-     ];
-    }).override {
+    wxGTK = wxGTK32.override {
       withWebKit = true;
     };
   };
 
   sladeUnstable = callPackage ../games/doom-ports/slade/git.nix {
-    wxGTK = (wxGTK32.overrideAttrs {
-      patches = [
-       (fetchpatch { # required to run sladeUnstable unstable-2023-09-30 on wxGTK 3.2.4, see PR #266945
-         url = "https://github.com/wxWidgets/wxWidgets/commit/425d9455e8307c1267a79d47d77e3dafeb4d86de.patch";
-         excludes = [ "docs/changes.txt" ];
-         revert = true;
-         hash = "sha256-6LOYLDLtVCHxNdHAWv3zhlCsljIpi//RJb9XVLGD5hM=";
-       })
-     ];
-    }).override {
+    wxGTK = wxGTK32.override {
       withWebKit = true;
     };
   };
@@ -17862,14 +17844,7 @@ with pkgs;
   gplates = libsForQt5.callPackage ../applications/science/misc/gplates { };
 
   golly = callPackage ../applications/science/misc/golly {
-    wxGTK = wxGTK32.overrideAttrs (x: {
-      configureFlags = x.configureFlags ++ [
-        "--enable-webrequest"
-      ];
-      buildInputs = x.buildInputs ++ [
-        curl
-      ];
-    });
+    wxGTK = wxGTK32;
   };
 
   megam = callPackage ../applications/science/misc/megam {