link to Xrender library

flake.nix

@@ -108,12 +108,13 @@
 
                 };
                 propagatedBuildInputs = [
-                  pkgs.python3Packages.pillow
+                  pkgs.libGL
                   pkgs.python3Packages.numpy
+                  pkgs.python3Packages.pillow
                   pkgs.python3Packages.setuptools
                   pkgs.xorg.libX11
-                  pkgs.libGL
                   pkgs.xorg.libXcomposite
+                  pkgs.xorg.libXrender
                 ];
                 doCheck = false;
                 postPatch = ''
@@ -127,7 +128,10 @@
                       '"${pkgs.libGL}/lib/libGL.so"' \
                     --replace \
                       "find_library('GLX')" \
-                      '"${pkgs.libGL}/lib/libGLX.so"'
+                      '"${pkgs.libGL}/lib/libGLX.so"' \
+                    --replace \
+                      "find_library('Xrender')" \
+                      '"${pkgs.xorg.libXrender}/lib/libXrender.so"'
                   substituteInPlace pyxlib/xcomposite.py \
                     --replace \
                       "'libXcomposite.so.1'" \