liminix

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extlinux.nix (1137B)

      1 {
      2   config
      3 , pkgs
      4 , lib
      5 , ...
      6 }:
      7 let
      8   inherit (lib) mkIf mkEnableOption mkOption types concatStringsSep;
      9   inherit (pkgs.pseudofile) dir symlink;
     10   cfg = config.boot.loader.extlinux;
     11   o = config.system.outputs;
     12   cmdline = concatStringsSep " " config.boot.commandLine;
     13   wantsDtb = config.hardware.dts ? src && config.hardware.dts.src != null;
     14 in {
     15   options.system.outputs.extlinux = mkOption {
     16     type = types.package;
     17     # description = "";
     18   };
     19   options.boot.loader.extlinux.enable = mkEnableOption "extlinux";
     20 
     21   config = mkIf cfg.enable {
     22     system.outputs.extlinux = pkgs.runCommand "extlinux" {} ''
     23       mkdir $out
     24       cd $out
     25       ${if wantsDtb then "cp ${o.dtb} dtb" else "true"}
     26       cp ${o.initramfs} initramfs
     27       cp ${o.zimage} kernel
     28       mkdir extlinux
     29       cat > extlinux/extlinux.conf << _EOF
     30       menu title Liminix
     31       timeout 40
     32       label Liminix
     33         kernel /boot/kernel
     34         # initrd /boot/initramfs
     35         append ${cmdline} 
     36         ${if wantsDtb then "fdt /boot/dtb" else ""}
     37       _EOF
     38     '';
     39     filesystem = dir {
     40       boot = symlink config.system.outputs.extlinux;
     41     };
     42   };
     43 }