(use-modules
 (gnu)
 (nongnu packages linux)
 (nongnu system linux-initrd))
(use-service-modules cups desktop networking sddm ssh xorg)

(operating-system
 (kernel linux)
 (initrd microcode-initrd)
 (firmware (list linux-firmware))
 (locale "en_IN.utf8")
 (timezone "Asia/Kolkata")
 (keyboard-layout (keyboard-layout "us"))
 
 (services
  (cons*
   (service plasma-desktop-service-type)
   ;; configure sddm
   ;; ref: guix.git/gnu/system/examples/plasma.tmpl?h=master
   (service sddm-service-type
	    (sddm-configuration
	     (display-server "x11")
	     (xorg-configuration
	      (xorg-configuration
	       (keyboard-layout keyboard-layout)))
	     (theme "breeze")))
   (service bluetooth-service-type
	    (bluetooth-configuration
	     (auto-enable? #t)))
   (service openssh-service-type)
   (service cups-service-type)
   (modify-services
    %desktop-services
    ;; remove gdm which is replaced by sddm
    ;; A bit convoluted compared to Nix. Nix would simply overwrite the default service.
    ;; Actually no. Nix can also let them live together: *.sddm.enable = true; *.gdm.enable = true;    
    (delete gdm-service-type)
    ;; modify guix-service-type to register substitute (i.e., binary cache) url for nonguix
    (guix-service-type
     config =>
     (guix-configuration
      (inherit config)
      (substitute-urls
       (append (list "https://substitutes.nonguix.org")
	       %default-substitute-urls))
      (authorized-keys
       (append (list (local-file "./nonguix-substitutes-signing-key.pub"))
	       %default-authorized-guix-keys)))))))

 ;; The list of user accounts ('root' is implicit).

 ;; Packages installed system-wide.  Users can also install packages
 ;; under their own account: use 'guix search KEYWORD' to search
 ;; for packages and 'guix install PACKAGE' to install a package.
 (packages
  (append
   (specifications->packages
    (list
     "ark"
     "direnv"
     "ed"
     "emacs"
     "emacs-bash-completion"
     "emacs-geiser"
     "emacs-geiser-guile"
     "firefox"
     "flatpak"
     "flatpak-xdg-utils"
     "font-adobe-source-code-pro"
     "font-dejavu"
     "font-fira-sans"
     "font-google-noto" ;; to render the system be able to render all languages
     "font-google-roboto"
     "font-microsoft-cascadia"
     "git"
     ;; "gnome-shell-extension-dash-to-dock"
     ;; "gnome-shell-extension-dash-to-panel"
     ;; "gnome-shell-extensions"
     ;; "gnome-tweaks" 
     "guile"
     "kate"
     "kmousetool"
     "konversation"
     "ntfs-3g" 
     "okular"
     "print-manager"
     "stow"
     ;; "terminator" ; gnome-terminal shrinks everytime focus switches away from it or on it
     ;; TODO: package atkinson-hyperlegible
     ;; TODO: package droid-sans
     "tree"
     "ungoogled-chromium"
     "unzip"
     "vim-full" 
     "vscodium"
     "whisper-cpp"
     "xclip"
     "xdg-desktop-portal"
     "xdg-desktop-portal-gtk"
     "xdg-desktop-portal-kde"
     "xdg-utils"
     ))
   %base-packages))


 (bootloader
  (bootloader-configuration
   (bootloader grub-efi-bootloader)
   (targets (list "/boot/efi"))
   (keyboard-layout keyboard-layout)
   (theme
    (grub-theme
     (inherit (grub-theme))
     (gfxmode (list "1920x1080" "auto"))))))

 (initrd-modules
  (append
   (list
    "ahci"
    "evdev"
    "usbhid"
    "sd_mod"
    "sr_mod"
    "xhci_hcd"
    ;;"vmd" ;; intel specific
    "usb_storage"
    ;;"i915" ;; intel integrated gpu specific
    ;;"kvm-intel" ;; intel specific
    "hid-apple")
   %base-initrd-modules))
 )