diff --git a/home-config/home-configuration.scm b/home-config/home-configuration.scm
index 76abe51..9fb45fb 100644
--- a/home-config/home-configuration.scm
+++ b/home-config/home-configuration.scm
@@ -28,6 +28,8 @@
                                                     "qrencode"
                                                     "binutils"
                                                     "gcc-toolchain"
+                                                    "borg"
+                                                    "python-msgpack"
                                                     "libreoffice"
                                                     "flatpak"
                                                     "gnupg"
@@ -56,6 +58,8 @@
                                                     "texlive-xcolor"
                                                     "texlive-latex-geometry"
                                                     "texlive-hyperref"
+                                                    "texlive-latex-parskip"
+                                                    "texlive-etoolbox"
                                                     "zathura"
                                                     "zathura-pdf-mupdf"
                                                     "fzf"
@@ -63,6 +67,7 @@
                                                     "icedove-minimal"
                                                     "gimp"
                                                     "python"
+                                                    "python-lsp-server"
                                                     "sqlite"
                                                     "git"))
                     (list my-neovim)))
diff --git a/home-config/nvim/config/init.vim b/home-config/nvim/config/init.vim
index c0082a2..0934e02 100644
--- a/home-config/nvim/config/init.vim
+++ b/home-config/nvim/config/init.vim
@@ -52,6 +52,8 @@ require('orgmode').setup({
 
 vim.opt.conceallevel = 2
 vim.opt.concealcursor = nc
+
+local lspconfig = require('lspconfig')
 END
 
 "asynccomplete Auto Complete Config
diff --git a/system.scm b/system.scm
index 90e99ab..2c2a444 100644
--- a/system.scm
+++ b/system.scm
@@ -26,6 +26,15 @@
                     (list "sudo" "nano")))
           %base-packages ))
 
+(define %backlight-udev-rule
+  (udev-rule
+    "90-backlight.rules"
+    (string-append "ACTION==\"add\", SUBSYSTEM==\"backlight\", "
+                   "RUN+=\"/run/current-system/profile/bin/chgrp video /sys/class/backlight/%k/brightness\""
+                   "\n"
+                   "ACTION==\"add\", SUBSYSTEM==\"backlight\", "
+                    "RUN+=\"/run/current-system/profile/bin/chmod g+w /sys/class/backlight/%k/brightness\"")))
+
 (operating-system
   (kernel linux)
   (firmware (list linux-firmware))
@@ -108,6 +117,11 @@
 							 (q #C1FD53E5D4CE971933EC50C9F307AE2171A2D3B52C804642A7A35F84F3A4EA98#)
 							)
 						       )" ) %default-authorized-guix-keys))))
+    (udev-service-type config =>
+                (udev-configuration
+                  (inherit config)
+                  (rules (cons %backlight-udev-rule
+                               (udev-configuration-rules config)))))
     (delete pulseaudio-service-type)
     (delete gdm-service-type) )))
   (setuid-programs