diff --git a/pkgs/by-name/fl/flameshot/0001-NixOS-dependency-injection.patch b/pkgs/by-name/fl/flameshot/0001-NixOS-dependency-injection.patch
new file mode 100644
index 0000000000000..6dac6ca18e0fe
--- /dev/null
+++ b/pkgs/by-name/fl/flameshot/0001-NixOS-dependency-injection.patch
@@ -0,0 +1,41 @@
+From 8ca703efdb1129d97d27f78b0bbd1d21056a9501 Mon Sep 17 00:00:00 2001
+From: hustlerone <nine-ball@tutanota.com>
+Date: Thu, 10 Jul 2025 18:13:32 +0200
+Subject: [PATCH] NixOS dependency injection
+
+---
+ CMakeLists.txt | 11 +++--------
+ 1 file changed, 3 insertions(+), 8 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 8df544bc..62bccb8b 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -48,8 +48,7 @@ set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+ 
+ FetchContent_Declare(
+     qtColorWidgets
+-    GIT_REPOSITORY https://gitlab.com/mattbas/Qt-Color-Widgets.git
+-    GIT_TAG 352bc8f99bf2174d5724ee70623427aa31ddc26a
++    SOURCE_DIR "${CMAKE_SOURCE_DIR}/tmp/qtColorWidgets"
+ )
+ 
+ #Workaround for duplicate GUID in windows WIX installer
+@@ -129,12 +128,8 @@ if (USE_KDSINGLEAPPLICATION)
+   set(KDSingleApplication_EXAMPLES OFF CACHE BOOL "Don't build the examples")
+   set(KDSingleApplication_STATIC ON CACHE BOOL "Build static versions of the libraries")
+ 
+-  FetchContent_Declare(
+-      kdsingleApplication
+-      GIT_REPOSITORY https://github.com/KDAB/KDSingleApplication.git
+-      GIT_TAG v1.2.0
+-  )
+-  FetchContent_MakeAvailable(KDSingleApplication)
++  find_package(KDSingleApplication-qt6)
++  add_library(kdsingleapplication ALIAS KDAB::kdsingleapplication)
+ endif()
+ 
+ # ToDo: Check if this is used anywhere
+-- 
+2.49.0
+
diff --git a/pkgs/by-name/fl/flameshot/package.nix b/pkgs/by-name/fl/flameshot/package.nix
index f2f45f70f53f2..ea0a041529662 100644
--- a/pkgs/by-name/fl/flameshot/package.nix
+++ b/pkgs/by-name/fl/flameshot/package.nix
@@ -2,61 +2,79 @@
   stdenv,
   lib,
   fetchFromGitHub,
+  fetchFromGitLab,
   fetchpatch,
   cmake,
+  git,
   imagemagick,
   libicns,
-  libsForQt5,
+  kdePackages,
+  kdsingleapplication,
   grim,
   makeBinaryWrapper,
   nix-update-script,
   enableWlrSupport ? false,
   enableMonochromeIcon ? false,
 }:
+let
+  qtColorWidgets = fetchFromGitLab {
+    owner = "mattbas";
+    repo = "Qt-Color-Widgets";
+    rev = "352bc8f99bf2174d5724ee70623427aa31ddc26a";
+    hash = "sha256-Viwk2kXUfndvylvGUyrPgb+PecZYn6iRDR22tzlRbmY=";
+  };
+in
 
 assert stdenv.hostPlatform.isDarwin -> (!enableWlrSupport);
 
 stdenv.mkDerivation {
   pname = "flameshot";
   # wlr screenshotting is currently only available on unstable version (>12.1.0)
-  version = "12.1.0-unstable-2025-05-04";
+  version = "12.1.0-unstable-2025-07-10";
 
   src = fetchFromGitHub {
     owner = "flameshot-org";
     repo = "flameshot";
-    rev = "f4cde19c63473f8fadd448ad2056c22f0f847f34";
-    hash = "sha256-B/piB8hcZR11vnzvue/1eR+SFviTSGJoek1w4abqsek=";
+    rev = "32e97220427e4db86ad614acb3c905f303733091";
+    hash = "sha256-pMthhsIr7ZINVcv0BPID7sea1eXuQqOQvM4+BkIgte4=";
+
+    nativeBuildInputs = [
+      git
+    ];
+
+    postFetch = ''
+      cd "$out"
+      mkdir tmp
+      cp -r "${qtColorWidgets}" tmp/qtColorWidgets
+    '';
   };
 
   patches = [
-    # https://github.com/flameshot-org/flameshot/pull/3166
-    # fixes fractional scaling calculations on wayland
-    (fetchpatch {
-      name = "10-fix-wayland.patch";
-      url = "https://github.com/flameshot-org/flameshot/commit/5fea9144501f7024344d6f29c480b000b2dcd5a6.patch";
-      hash = "sha256-SnjVbFMDKD070vR4vGYrwLw6scZAFaQA4b+MbI+0W9E=";
-    })
+    ./0001-NixOS-dependency-injection.patch
   ];
 
   cmakeFlags =
     [
       (lib.cmakeBool "DISABLE_UPDATE_CHECKER" true)
       (lib.cmakeBool "USE_MONOCHROME_ICON" enableMonochromeIcon)
+      # I don't know what the hell these do
+      (lib.cmakeBool "USE_KDSINGLEAPPLICATION" false)
+      (lib.cmakeBool "FLAMESHOT_DEBUG_CAPTURE" false)
     ]
     ++ lib.optionals stdenv.hostPlatform.isLinux [
       (lib.cmakeBool "USE_WAYLAND_CLIPBOARD" true)
       (lib.cmakeBool "USE_WAYLAND_GRIM" enableWlrSupport)
     ]
     ++ lib.optionals stdenv.hostPlatform.isDarwin [
-      (lib.cmakeFeature "Qt5_DIR" "${libsForQt5.qtbase.dev}/lib/cmake/Qt5")
+      (lib.cmakeFeature "Qt6_DIR" "${kdePackages.qtbase.dev}/lib/cmake/Qt6")
     ];
 
   nativeBuildInputs =
     [
       cmake
-      libsForQt5.qttools
-      libsForQt5.qtsvg
-      libsForQt5.wrapQtAppsHook
+      kdePackages.qttools
+      kdePackages.qtsvg
+      kdePackages.wrapQtAppsHook
       makeBinaryWrapper
     ]
     ++ lib.optionals stdenv.hostPlatform.isDarwin [
@@ -65,8 +83,9 @@ stdenv.mkDerivation {
     ];
 
   buildInputs = [
-    libsForQt5.qtbase
-    libsForQt5.kguiaddons
+    kdePackages.qtbase
+    kdePackages.kguiaddons
+    kdsingleapplication
   ];
 
   postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''