diff --git a/pkgs/by-name/li/libgaminggear/package.nix b/pkgs/by-name/li/libgaminggear/package.nix
index 46daaf734fb6..504f9e8483bf 100644
--- a/pkgs/by-name/li/libgaminggear/package.nix
+++ b/pkgs/by-name/li/libgaminggear/package.nix
@@ -1,6 +1,7 @@
 {
   lib,
   stdenv,
+  fetchpatch2,
   fetchurl,
   cmake,
   pkg-config,
@@ -23,6 +24,13 @@ stdenv.mkDerivation rec {
     sha256 = "0jf5i1iv8j842imgiixbhwcr6qcwa93m27lzr6gb01ri5v35kggz";
   };
 
+  patches = [
+    (fetchpatch2 {
+      url = "https://aur.archlinux.org/cgit/aur.git/plain/cmake_min_version.patch?h=libgaminggear&id=bfe7db62db76dbcefa8ba47640a35c80183f91d3";
+      hash = "sha256-loznfqxlucYlDUSYotMdUBmivKu+DD+OYhRIWpcrSgE=";
+    })
+  ];
+
   outputs = [
     "dev"
     "out"
diff --git a/pkgs/by-name/ro/roccat-tools/package.nix b/pkgs/by-name/ro/roccat-tools/package.nix
index 35e2a6003faf..959637eff371 100644
--- a/pkgs/by-name/ro/roccat-tools/package.nix
+++ b/pkgs/by-name/ro/roccat-tools/package.nix
@@ -37,7 +37,11 @@ stdenv.mkDerivation rec {
     substituteInPlace udev/90-roccat-kone.rules \
       --replace "/bin/sh" "${runtimeShell}" \
       --replace "/sbin/modprobe" "${kmod}/bin/modprobe" \
-      --replace "/bin/echo" "${coreutils}/bin/echo"
+      --replace "/bin/echo" "${coreutils}/bin/echo" \
+      --replace '$' '$$' # fix bash variables interpreted as udev substitutions
+
+    substituteInPlace CMakeLists.txt \
+      --replace-fail "CMAKE_MINIMUM_REQUIRED(VERSION 2.8.12)" "CMAKE_MINIMUM_REQUIRED(VERSION 3.10)"
   '';
 
   nativeBuildInputs = [