nix/disko/default.nix

{
  standard = {disks ? ["/dev/vda"], ...}: {
    # this is my standard partitioning scheme for my machines: an LUKS-encrypted
    # btrfs volume
    disko.devices = {
      disk = {
        primary = {
          type = "disk";
          device = builtins.elemAt disks 0;
          content = {
            type = "gpt";
            partitions = {
              ESP = {
                label = "EFI";
                name = "ESP";
                size = "512M";
                type = "EF00";
                content = {
                  type = "filesystem";
                  format = "vfat";
                  mountpoint = "/boot";
                  mountOptions = [
                    "defaults"
                  ];
                };
              };
              luks = {
                size = "100%";
                content = {
                  type = "luks";
                  name = "crypted";
                  extraOpenArgs = ["--allow-discards"];
                  # if you want to use the key for interactive login be sure there is no trailing newline
                  # for example use `echo -n "password" > /tmp/secret.key`
                  keyFile = "/tmp/secret.key"; # Interactive
                  # settings.keyFile = "/tmp/password.key";
                  # additionalKeyFiles = ["/tmp/additionalSecret.key"];
                  content = {
                    type = "btrfs";
                    extraArgs = ["-f"];
                    subvolumes = {
                      "/root" = {
                        mountpoint = "/";
                        mountOptions = ["compress=zstd" "noatime"];
                      };
                      "/home" = {
                        mountpoint = "/home";
                        mountOptions = ["compress=zstd" "noatime"];
                      };
                      "/nix" = {
                        mountpoint = "/nix";
                        mountOptions = ["compress=zstd" "noatime"];
                      };
                    };
                  };
                };
              };
            };
          };
        };
      };
    };
  };
  # TODO: figure out what I can't have an optiona/default 'name' attribute here so I can DRY with "standard"
  thinker = {disks ? ["/dev/vda"], ...}: {
    disko.devices = {
      disk = {
        vdb = {
          type = "disk";
          device = builtins.elemAt disks 0;
          content = {
            type = "gpt";
            partitions = {
              ESP = {
                label = "EFI";
                name = "ESP";
                size = "512M";
                type = "EF00";
                content = {
                  type = "filesystem";
                  format = "vfat";
                  mountpoint = "/boot";
                  mountOptions = [
                    "defaults"
                  ];
                };
              };
              luks = {
                size = "100%";
                content = {
                  type = "luks";
                  name = "crypted";
                  extraOpenArgs = ["--allow-discards"];
                  # if you want to use the key for interactive login be sure there is no trailing newline
                  # for example use `echo -n "password" > /tmp/secret.key`
                  keyFile = "/tmp/secret.key"; # Interactive
                  # settings.keyFile = "/tmp/password.key";
                  # additionalKeyFiles = ["/tmp/additionalSecret.key"];
                  content = {
                    type = "btrfs";
                    extraArgs = ["-f"];
                    subvolumes = {
                      "/root" = {
                        mountpoint = "/";
                        mountOptions = ["compress=zstd" "noatime"];
                      };
                      "/home" = {
                        mountpoint = "/home";
                        mountOptions = ["compress=zstd" "noatime"];
                      };
                      "/nix" = {
                        mountpoint = "/nix";
                        mountOptions = ["compress=zstd" "noatime"];
                      };
                    };
                  };
                };
              };
            };
          };
        };
      };
    };
  };
  unencrypted = {disks ? ["/dev/vda"], ...}: {
    disko.devices = {
      disk = {
        primary = {
          type = "disk";
          device = builtins.elemAt disks 0;
          content = {
            type = "gpt";
            partitions = {
              ESP = {
                label = "EFI";
                name = "ESP";
                size = "512M";
                type = "EF00";
                content = {
                  type = "filesystem";
                  format = "vfat";
                  mountpoint = "/boot";
                  mountOptions = [
                    "defaults"
                  ];
                };
              };
              root = {
                size = "100%";
                content = {
                  type = "btrfs";
                  extraArgs = ["-f"];
                  subvolumes = {
                    "/root" = {
                      mountpoint = "/";
                      mountOptions = [];
                    };
                    "/home" = {
                      mountpoint = "/home";
                      mountOptions = ["compress=zstd"];
                    };
                    "/nix" = {
                      mountpoint = "/nix";
                      mountOptions = ["compress=zstd" "noatime"];
                    };
                  };
                };
              };
            };
          };
        };
      };
    };
  };
  legacy = {disks ? ["/dev/vda"], ...}: {
    disko.devices = {
      disk = {
        primary = {
          device = builtins.elemAt disks 0;
          type = "disk";
          content = {
            type = "table";
            format = "gpt";
            partitions = [
              {
                name = "ESP";
                start = "1M";
                end = "500M";
                bootable = true;
                content = {
                  type = "filesystem";
                  format = "vfat";
                  mountpoint = "/boot";
                };
              }
              {
                name = "root";
                start = "500M";
                end = "100%";
                part-type = "primary";
                bootable = true;
                content = {
                  type = "filesystem";
                  format = "ext4";
                  mountpoint = "/";
                };
              }
            ];
          };
        };
      };
    };
  };
}