allow accessing the attic cache from the CI runner

rm unused dep nix-templating

fix imports

.forgejo/workflows/ci.yaml

@@ -25,7 +25,7 @@ jobs:
     runs-on: native
     steps:
       - uses: actions/checkout@v4
-      - run: nix-build services -A tests.peertube
+      - run: nix-shell --run attic push demo $(nix-build services -A tests.peertube)
 
   check-panel:
     runs-on: native

default.nix

@@ -58,12 +58,14 @@ in
       in
       [
         pkgs.npins
+        pkgs.attic-client
         pkgs.nil
         (pkgs.callPackage "${sources.agenix}/pkgs/agenix.nix" { })
         pkgs.openssh
         pkgs.httpie
         pkgs.jq
         pkgs.nix-unit
+        pkgs.attic-client
         test-loop
         nixops4.packages.${system}.default
       ];

deployment/check/cli/flake-part.nix

@@ -14,6 +14,7 @@ let
     "mastodon"
     "peertube"
     "pixelfed"
+    "attic"
   ];
   pathToRoot = /. + (builtins.unsafeDiscardStringContext self);
   pathFromRoot = ./.;

deployment/check/cli/nixosTest.nix

@@ -25,6 +25,8 @@ in
         peertube.inputDerivation
         gixy
         gixy.inputDerivation
+        shellcheck
+        shellcheck.inputDerivation
       ];
 
       system.extraDependenciesFromModule = {
@@ -48,6 +50,11 @@ in
             s3AccessKeyFile = dummyFile;
             s3SecretKeyFile = dummyFile;
           };
+          attic = {
+            enable = true;
+            s3AccessKeyFile = dummyFile;
+            s3SecretKeyFile = dummyFile;
+          };
           temp.cores = 1;
           temp.initialUser = {
             username = "dummy";
@@ -72,6 +79,7 @@ in
   nodes.mastodon.virtualisation.memorySize = 4 * 1024;
   nodes.pixelfed.virtualisation.memorySize = 4 * 1024;
   nodes.peertube.virtualisation.memorySize = 5 * 1024;
+  nodes.attic.virtualisation.memorySize = 2 * 1024;
 
   ## FIXME: The test of presence of the services are very simple: we only
   ## check that there is a systemd service of the expected name on the
@@ -86,6 +94,7 @@ in
       mastodon.fail("systemctl status mastodon-web.service")
       peertube.fail("systemctl status peertube.service")
       pixelfed.fail("systemctl status phpfpm-pixelfed.service")
+      attic.fail("systemctl status atticd.service")
 
     with subtest("Run deployment with no services enabled"):
       deployer.succeed("nixops4 apply check-deployment-cli-nothing --show-trace --no-interactive 1>&2")
@@ -95,6 +104,7 @@ in
       mastodon.fail("systemctl status mastodon-web.service")
       peertube.fail("systemctl status peertube.service")
       pixelfed.fail("systemctl status phpfpm-pixelfed.service")
+      attic.fail("systemctl status atticd.service")
 
     with subtest("Run deployment with Mastodon and Pixelfed enabled"):
       deployer.succeed("nixops4 apply check-deployment-cli-mastodon-pixelfed --show-trace --no-interactive 1>&2")
@@ -104,6 +114,7 @@ in
       mastodon.succeed("systemctl status mastodon-web.service")
       peertube.fail("systemctl status peertube.service")
       pixelfed.succeed("systemctl status phpfpm-pixelfed.service")
+      attic.fail("systemctl status atticd.service")
 
     with subtest("Run deployment with only Peertube enabled"):
       deployer.succeed("nixops4 apply check-deployment-cli-peertube --show-trace --no-interactive 1>&2")
@@ -113,5 +124,6 @@ in
       mastodon.fail("systemctl status mastodon-web.service")
       peertube.succeed("systemctl status peertube.service")
       pixelfed.fail("systemctl status phpfpm-pixelfed.service")
+      attic.fail("systemctl status atticd.service")
   '';
 }

deployment/check/common/deployerNode.nix

@@ -40,7 +40,7 @@ in
       ## default. These values have been trimmed down to the gigabyte.
       ## Memory use is expected to be dominated by the NixOS evaluation,
       ## which happens on the deployer.
-      memorySize = 4 * 1024;
+      memorySize = 5 * 1024;
       diskSize = 4 * 1024;
       cores = 2;
     };
@@ -59,7 +59,10 @@ in
         inputs.nixops4
         inputs.nixops4-nixos
         inputs.nixpkgs
+
+        sources.nixpkgs
         sources.flake-inputs
+        sources.vars
 
         pkgs.stdenv
         pkgs.stdenvNoCC

deployment/check/panel/flake-part.nix

@@ -17,6 +17,7 @@ let
     "mastodon"
     "peertube"
     "pixelfed"
+    "attic"
   ];
   pathToRoot = /. + (builtins.unsafeDiscardStringContext self);
   pathFromRoot = ./.;

deployment/check/panel/nixosTest.nix

@@ -33,6 +33,7 @@ let
       enableMastodon,
       enablePeertube,
       enablePixelfed,
+      enableAttic,
     }:
     hostPkgs.writers.writePython3Bin "interact-with-panel"
       {
@@ -94,6 +95,7 @@ let
         checkbox_set(driver.find_element(By.XPATH, "//input[@name = 'mastodon.enable']"), ${toPythonBool enableMastodon})
         checkbox_set(driver.find_element(By.XPATH, "//input[@name = 'peertube.enable']"), ${toPythonBool enablePeertube})
         checkbox_set(driver.find_element(By.XPATH, "//input[@name = 'pixelfed.enable']"), ${toPythonBool enablePixelfed})
+        checkbox_set(driver.find_element(By.XPATH, "//input[@name = 'attic.enable']"), ${toPythonBool enableAttic})
 
         print("Start deployment...")
         driver.find_element(By.XPATH, "//button[@id = 'deploy-button']").click()
@@ -194,6 +196,11 @@ in
             s3AccessKeyFile = dummyFile;
             s3SecretKeyFile = dummyFile;
           };
+          attic = {
+            enable = true;
+            s3AccessKeyFile = dummyFile;
+            s3SecretKeyFile = dummyFile;
+          };
           temp.cores = 1;
           temp.initialUser = {
             username = "dummy";
@@ -239,6 +246,7 @@ in
   nodes.mastodon.virtualisation.memorySize = 4 * 1024;
   nodes.pixelfed.virtualisation.memorySize = 4 * 1024;
   nodes.peertube.virtualisation.memorySize = 5 * 1024;
+  nodes.attic.virtualisation.memorySize = 4 * 1024;
 
   ## FIXME: The test of presence of the services are very simple: we only
   ## check that there is a systemd service of the expected name on the
@@ -311,6 +319,7 @@ in
       mastodon.fail("systemctl status mastodon-web.service")
       peertube.fail("systemctl status peertube.service")
       pixelfed.fail("systemctl status phpfpm-pixelfed.service")
+      attic.fail("systemctl status atticd.service")
 
     with subtest("Run deployment with no services enabled"):
       client.succeed("${
@@ -319,6 +328,7 @@ in
           enableMastodon = false;
           enablePeertube = false;
           enablePixelfed = false;
+          enableAttic = false;
         }
       }/bin/interact-with-panel >&2")
 
@@ -327,6 +337,7 @@ in
       mastodon.fail("systemctl status mastodon-web.service")
       peertube.fail("systemctl status peertube.service")
       pixelfed.fail("systemctl status phpfpm-pixelfed.service")
+      attic.fail("systemctl status atticd.service")
 
     with subtest("Run deployment with Mastodon and Pixelfed enabled"):
       client.succeed("${
@@ -335,6 +346,7 @@ in
           enableMastodon = true;
           enablePeertube = false;
           enablePixelfed = true;
+          enableAttic = false;
         }
       }/bin/interact-with-panel >&2")
 
@@ -343,6 +355,7 @@ in
       mastodon.succeed("systemctl status mastodon-web.service")
       peertube.fail("systemctl status peertube.service")
       pixelfed.succeed("systemctl status phpfpm-pixelfed.service")
+      attic.fail("systemctl status atticd.service")
 
     with subtest("Run deployment with only Peertube enabled"):
       client.succeed("${
@@ -351,6 +364,7 @@ in
           enableMastodon = false;
           enablePeertube = true;
           enablePixelfed = false;
+          enableAttic = false;
         }
       }/bin/interact-with-panel >&2")
 
@@ -359,5 +373,6 @@ in
       mastodon.fail("systemctl status mastodon-web.service")
       peertube.succeed("systemctl status peertube.service")
       pixelfed.fail("systemctl status phpfpm-pixelfed.service")
+      attic.fail("systemctl status atticd.service")
   '';
 }

deployment/configuration.sample.json

@@ -3,6 +3,7 @@
   "mastodon": { "enable": false },
   "peertube": { "enable": false },
   "pixelfed": { "enable": false },
+  "attic": { "enable": false },
   "initialUser": {
     "displayName": "Testy McTestface",
     "username": "test",

deployment/default.nix

@@ -24,6 +24,7 @@
   mastodonConfigurationResource,
   peertubeConfigurationResource,
   pixelfedConfigurationResource,
+  atticConfigurationResource,
 }:
 
 ## From the hosting provider's perspective, the function is meant to be
@@ -55,6 +56,7 @@ let
     mastodon = nonNull panelConfigNullable.mastodon { enable = false; };
     peertube = nonNull panelConfigNullable.peertube { enable = false; };
     pixelfed = nonNull panelConfigNullable.pixelfed { enable = false; };
+    attic = nonNull panelConfigNullable.attic { enable = false; };
   };
 in
 
@@ -107,6 +109,13 @@ in
             s3AccessKeyFile = pkgs.writeText "s3AccessKey" "GKb5615457d44214411e673b7b";
             s3SecretKeyFile = pkgs.writeText "s3SecretKey" "5be6799a88ca9b9d813d1a806b64f15efa49482dbe15339ddfaf7f19cf434987";
           };
+        atticS3KeyConfig =
+          { pkgs, ... }:
+          {
+            # REVIEW: how were these generated above? how do i add one?
+            s3AccessKeyFile = pkgs.writeText "s3AccessKey" "GKaaaaaaaaaaaaaaaaaaaaaaaa";
+            s3SecretKeyFile = pkgs.writeText "s3SecretKey" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
+          };
 
         makeConfigurationResource = resourceModule: config: {
           type = providers.local.exec;
@@ -140,13 +149,14 @@ in
       {
         garage-configuration = makeConfigurationResource garageConfigurationResource (
           { pkgs, ... }:
-          mkIf (cfg.mastodon.enable || cfg.peertube.enable || cfg.pixelfed.enable) {
+          mkIf (cfg.mastodon.enable || cfg.peertube.enable || cfg.pixelfed.enable || cfg.attic.enable) {
             fediversity = {
               inherit (cfg) domain;
               garage.enable = true;
               pixelfed = pixelfedS3KeyConfig { inherit pkgs; };
               mastodon = mastodonS3KeyConfig { inherit pkgs; };
               peertube = peertubeS3KeyConfig { inherit pkgs; };
+              attic = atticS3KeyConfig { inherit pkgs; };
             };
           }
         );
@@ -213,6 +223,25 @@ in
             };
           }
         );
+
+        attic-configuration = makeConfigurationResource atticConfigurationResource (
+          { pkgs, ... }:
+          mkIf cfg.attic.enable {
+            fediversity = {
+              inherit (cfg) domain;
+              temp.initialUser = {
+                inherit (cfg.initialUser) username email displayName;
+                # FIXME: disgusting, but nvm, this is going to be replaced by
+                # proper central authentication at some point
+                passwordFile = pkgs.writeText "password" cfg.initialUser.password;
+              };
+
+              attic = atticS3KeyConfig { inherit pkgs; } // {
+                enable = true;
+              };
+            };
+          }
+        );
       };
   };
 }

deployment/options.nix

@@ -71,6 +71,19 @@ in
         });
       default = null;
     };
+    attic = mkOption {
+      description = ''
+        Configuration for the Attic service
+      '';
+      type =
+        with types;
+        nullOr (submodule {
+          options = {
+            enable = lib.mkEnableOption "Attic";
+          };
+        });
+      default = null;
+    };
     initialUser = mkOption {
       description = ''
         Some services require an initial user to access them.

infra/common/nixos/default.nix

@@ -24,6 +24,14 @@ in
     experimental-features = nix-command flakes
   '';
 
+  nix.settings = {
+    substituters = [
+      "https://attic.fediversity.net/demo"
+    ];
+    trusted-public-keys = [
+      "demo:N3CAZ049SeBVqBM+OnhLMrxWJ9altbD/aoJtHrY19KM="
+    ];
+  };
   boot.loader = {
     systemd-boot.enable = true;
     efi.canTouchEfiVariables = true;

infra/common/proxmox-qemu-vm.nix

@@ -1,9 +1,13 @@
-{ modulesPath, ... }:
-
+let
+  # pulling this in manually over from module args resolves an infinite recursion
+  sources = import ../../npins;
+in
 {
   _class = "nixos";
 
-  imports = [ (modulesPath + "/profiles/qemu-guest.nix") ];
+  imports = [
+    "${sources.nixpkgs}/nixos/modules/profiles/qemu-guest.nix"
+  ];
 
   boot = {
     initrd = {

infra/common/resource.nix

@@ -32,9 +32,11 @@ in
   ## options that really need to be injected from the resource. Everything else
   ## should go into the `./nixos` subdirectory.
   nixos.module = {
-    imports = [
-      "${sources.agenix}/modules/age.nix"
-      "${sources.disko}/module.nix"
+    imports = with sources; [
+      "${agenix}/modules/age.nix"
+      "${disko}/module.nix"
+      "${vars}/options.nix"
+      "${vars}/backends/on-machine.nix"
       ./options.nix
       ./nixos
     ];

infra/flake-part.nix

@@ -33,6 +33,10 @@ let
           ;
       };
 
+      nixos.module.imports = [
+        ./common/proxmox-qemu-vm.nix
+      ];
+
       imports =
         [
           ./common/resource.nix
@@ -40,7 +44,6 @@ let
         ++ (
           if isTestVm then
             [
-              ./common/proxmox-qemu-vm.nix
               ../machines/operator/${vmName}
               {
                 nixos.module.users.users.root.openssh.authorizedKeys.keys = [
@@ -104,6 +107,10 @@ let
           vmName = "test04";
           isTestVm = true;
         };
+        atticConfigurationResource = makeResourceModule {
+          vmName = "test12";
+          isTestVm = true;
+        };
       };
 
   nixops4ResourceNixosMockOptions = {

machines/dev/fedi200/default.nix

@@ -16,10 +16,4 @@
       gateway = "2a00:51c0:13:1305::1";
     };
   };
-
-  nixos.module = {
-    imports = [
-      ../../../infra/common/proxmox-qemu-vm.nix
-    ];
-  };
 }

machines/dev/forgejo-ci/default.nix

@@ -48,7 +48,7 @@ in
       };
 
       ## NOTE: This is a physical machine, so is not covered by disko
-      fileSystems."/" = {
+      fileSystems."/" = lib.mkForce {
         device = "rpool/root";
         fsType = "zfs";
       };
@@ -58,7 +58,7 @@ in
         fsType = "zfs";
       };
 
-      fileSystems."/boot" = {
+      fileSystems."/boot" = lib.mkForce {
         device = "/dev/disk/by-uuid/50B2-DD3F";
         fsType = "vfat";
         options = [

machines/dev/forgejo-ci/forgejo-actions-runner.nix

@@ -1,8 +1,24 @@
-{ pkgs, config, ... }:
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}:
+let
+  sources = import ../../../npins;
+  user = "gitea-runner";
+  hm_strings = import "${sources.home-manager}/modules/lib/strings.nix" { inherit lib; };
+in
 
 {
   _class = "nixos";
 
+  imports = with sources; [
+    "${home-manager}/nixos"
+    "${vars}/options.nix"
+    "${vars}/backends/on-machine.nix"
+  ];
+
   services.gitea-actions-runner = {
     package = pkgs.forgejo-actions-runner;
 
@@ -44,4 +60,56 @@
 
   ## For the Docker mode of the runner.
   virtualisation.docker.enable = true;
+
+  vars.settings.on-machine.enable = true;
+  vars.generators."attic" = {
+    runtimeInputs = [ pkgs.coreutils ];
+    files."token".secret = true;
+    script = ''
+      cp "${config.age.secrets.attic-ci-token.path}" "$out/${"token"}"
+    '';
+  };
+  vars.generators."templates" = rec {
+    dependencies = [ "attic" ];
+    runtimeInputs = [
+      pkgs.coreutils
+      pkgs.gnused
+    ];
+    script = lib.concatStringsSep "\n" (
+      lib.mapAttrsToList (template: _: ''
+        cp "$templates/${template}" "$out/${template}"
+        echo "filling placeholders in template ${template}..."
+        sed -i "s/${config.vars.generators."attic".files."token".placeholder}/$(cat "${
+          config.vars.generators."attic".files."token".path
+        }")/g" "$out/${template}"
+      '') files
+    );
+
+    files."attic.toml" = {
+      secret = true;
+      owner = user;
+      template = pkgs.writeText "attic.toml" ''
+        default-server = "fediversity"
+
+        [servers.fediversity]
+        endpoint = "http://localhost:8080"
+        token = "${config.vars.generators.attic.files.token.placeholder}"
+      '';
+    };
+  };
+
+  # needed to place a config file with home-manager
+  users.users.${user}.isNormalUser = true;
+
+  home-manager = {
+    users.${user}.home = {
+      stateVersion = "25.05";
+      file.".config/attic/config.toml".source =
+        let
+          pathStr = config.vars.generators."templates".files."attic.toml".path;
+          name = hm_strings.storeFileName (baseNameOf pathStr);
+        in
+        pkgs.runCommandLocal name { } ''ln -s ${lib.escapeShellArg pathStr} $out'';
+    };
+  };
 }

machines/operator/test12/default.nix

@@ -18,4 +18,11 @@
       gateway = "2a00:51c0:13:1305::1";
     };
   };
+
+  nixos.module = {
+    imports = [
+      ../../../infra/common/proxmox-qemu-vm.nix
+      ../../../services/fediversity/attic
+    ];
+  };
 }

npins/sources.json

@@ -150,6 +150,19 @@
       "revision": "f33a4d26226c05d501b9d4d3e5e60a3a59991921",
       "url": "https://github.com/nixos/nixpkgs/archive/f33a4d26226c05d501b9d4d3e5e60a3a59991921.tar.gz",
       "hash": "1b6dm1sn0bdpcsmxna0zzspjaixa2dald08005fry5jrbjvwafdj"
+    },
+    "vars": {
+      "type": "Git",
+      "repository": {
+        "type": "GitHub",
+        "owner": "kiaragrouwstra",
+        "repo": "vars"
+      },
+      "branch": "templates",
+      "submodules": false,
+      "revision": "2f2ebd96b5df4c0f01509d6b283e15d8516a1c7b",
+      "url": "https://github.com/kiaragrouwstra/vars/archive/2f2ebd96b5df4c0f01509d6b283e15d8516a1c7b.tar.gz",
+      "hash": "0rpxh85fizmmh7v2qvhp9jzrvcyv1yhl58zd1dk0hx33s77da84x"
     }
   },
   "version": 5

secrets/secrets.nix

@@ -24,6 +24,7 @@ concatMapAttrs
     ## are able to decrypt them.
 
     {
+      attic-ci-token = [ forgejo-ci ];
       forgejo-database-password = [ vm02116 ];
       forgejo-email-password = [ vm02116 ];
       forgejo-runner-token = [ forgejo-ci ];

services/fediversity/attic/default.nix

@@ -0,0 +1,325 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}:
+let
+  inherit (lib) mkIf mkMerge;
+  sources = import ../../../npins;
+in
+{
+  imports = with sources; [
+    ./options.nix
+    "${vars}/options.nix"
+    "${vars}/backends/on-machine.nix"
+  ];
+
+  config = mkMerge [
+    (mkIf
+      (
+        config.fediversity.garage.enable
+        && config.fediversity.attic.s3AccessKeyFile != null
+        && config.fediversity.attic.s3SecretKeyFile != null
+      )
+      {
+        fediversity.garage = {
+          ensureBuckets = {
+            attic = {
+              website = true;
+              # TODO: these are too broad, after getting everything to work narrow it down to the domain we actually want
+              corsRules = {
+                enable = true;
+                allowedHeaders = [ "*" ];
+                allowedMethods = [ "GET" ];
+                allowedOrigins = [ "*" ];
+              };
+            };
+          };
+          ensureKeys = {
+            attic = {
+              inherit (config.fediversity.attic) s3AccessKeyFile s3SecretKeyFile;
+              ensureAccess = {
+                attic = {
+                  read = true;
+                  write = true;
+                  owner = true;
+                };
+              };
+            };
+          };
+        };
+      }
+    )
+    (mkIf config.fediversity.attic.enable {
+
+      services.postgresql = {
+        enable = true;
+        authentication = lib.mkForce ''
+          local all all trust
+        '';
+        ensureDatabases = [
+          "atticd"
+        ];
+        ensureUsers = [
+          {
+            name = "atticd";
+            ensureDBOwnership = true;
+          }
+        ];
+      };
+
+      # open up access to the mastodon web interface. 80 is necessary if only for ACME
+      networking.firewall.allowedTCPPorts = [
+        80
+        443
+        8080
+      ];
+
+      vars.settings.on-machine.enable = true;
+      vars.generators."templates" = rec {
+        dependencies = [ "attic" ];
+        runtimeInputs = [
+          pkgs.coreutils
+          pkgs.gnused
+        ];
+        script = lib.concatStringsSep "\n" (
+          lib.mapAttrsToList (template: _: ''
+            cp "$templates/${template}" "$out/${template}"
+            echo "filling placeholders in template ${template}..."
+            ${lib.concatStringsSep "\n" (
+              lib.mapAttrsToList (
+                parent:
+                { placeholder, ... }:
+                ''
+                  sed -i "s/${placeholder}/$(cat "$in/attic/${parent}")/g" "$out/${template}"
+                  echo "- substituted ${parent}"
+                ''
+              ) config.vars.generators."attic".files
+            )}
+          '') files
+        );
+
+        files."attic.env" = {
+          secret = true;
+          template = pkgs.writeText "attic.env" ''
+            ATTIC_SERVER_TOKEN_RS256_SECRET_BASE64="${config.vars.generators.attic.files.token.placeholder}"
+            AWS_ACCESS_KEY_ID="$(cat ${config.fediversity.attic.s3AccessKeyFile})"
+            AWS_SECRET_ACCESS_KEY="$(cat ${config.fediversity.attic.s3SecretKeyFile})"
+          '';
+        };
+      };
+
+      vars.generators.attic = {
+        runtimeInputs = [
+          pkgs.coreutils
+          pkgs.openssl
+        ];
+        files.token.secret = true;
+        script = ''
+          openssl genrsa -traditional 4096 | base64 -w0 > "$out"/token
+        '';
+      };
+
+      services.atticd = {
+        enable = true;
+        # one `monolithic` and any number of `api-server` nodes
+        mode = "monolithic";
+
+        environmentFile = config.vars.generators."templates".files."attic.env".path;
+
+        # https://github.com/zhaofengli/attic/blob/main/server/src/config-template.toml
+        settings = {
+          # Socket address to listen on
+          # listen = "[::]:8080";
+          listen = "0.0.0.0:8080";
+          # listen = "127.0.0.1:8080";
+
+          # Allowed `Host` headers
+          #
+          # This _must_ be configured for production use. If unconfigured or the
+          # list is empty, all `Host` headers are allowed.
+          allowed-hosts = [ ];
+
+          # The canonical API endpoint of this server
+          #
+          # This is the endpoint exposed to clients in `cache-config` responses.
+          #
+          # This _must_ be configured for production use. If not configured, the
+          # API endpoint is synthesized from the client's `Host` header which may
+          # be insecure.
+          #
+          # The API endpoint _must_ end with a slash (e.g., `https://domain.tld/attic/`
+          # not `https://domain.tld/attic`).
+          api-endpoint = "https://${config.fediversity.attic.domain}/";
+
+          # Whether to soft-delete caches
+          #
+          # If this is enabled, caches are soft-deleted instead of actually
+          # removed from the database. Note that soft-deleted caches cannot
+          # have their names reused as long as the original database records
+          # are there.
+          #soft-delete-caches = false;
+
+          # Whether to require fully uploading a NAR if it exists in the global cache.
+          #
+          # If set to false, simply knowing the NAR hash is enough for
+          # an uploader to gain access to an existing NAR in the global
+          # cache.
+          #require-proof-of-possession = true;
+
+          # Database connection
+          database = {
+            # Connection URL
+            #
+            # For production use it's recommended to use PostgreSQL.
+            # url = "postgresql:///atticd:password@127.0.0.1:5432/atticd";
+            url = "postgresql:///atticd?host=/run/postgresql";
+
+            # Whether to enable sending on periodic heartbeat queries
+            #
+            # If enabled, a heartbeat query will be sent every minute
+            #heartbeat = false;
+          };
+
+          # File storage configuration
+          storage = {
+            # Storage type
+            #
+            # Can be "local" or "s3".
+            type = "s3";
+
+            # ## Local storage
+
+            # The directory to store all files under
+            # path = "%storage_path%";
+
+            # ## S3 Storage (set type to "s3" and uncomment below)
+
+            # The AWS region
+            region = "garage";
+
+            # The name of the bucket
+            bucket = "attic";
+
+            # Custom S3 endpoint
+            #
+            # Set this if you are using an S3-compatible object storage (e.g., Minio).
+            endpoint = config.fediversity.garage.api.url;
+
+            # Credentials
+            #
+            # If unset, the credentials are read from the `AWS_ACCESS_KEY_ID` and
+            # `AWS_SECRET_ACCESS_KEY` environment variables.
+            # storage.credentials = {
+            #   access_key_id = "";
+            #   secret_access_key = "";
+            # };
+          };
+
+          # Data chunking
+          #
+          # Warning: If you change any of the values here, it will be
+          # difficult to reuse existing chunks for newly-uploaded NARs
+          # since the cutpoints will be different. As a result, the
+          # deduplication ratio will suffer for a while after the change.
+          chunking = {
+            # The minimum NAR size to trigger chunking
+            #
+            # If 0, chunking is disabled entirely for newly-uploaded NARs.
+            # If 1, all NARs are chunked.
+            nar-size-threshold = 65536; # chunk files that are 64 KiB or larger
+
+            # The preferred minimum size of a chunk, in bytes
+            min-size = 16384; # 16 KiB
+
+            # The preferred average size of a chunk, in bytes
+            avg-size = 65536; # 64 KiB
+
+            # The preferred maximum size of a chunk, in bytes
+            max-size = 262144; # 256 KiB
+          };
+
+          # Compression
+          compression = {
+            # Compression type
+            #
+            # Can be "none", "brotli", "zstd", or "xz"
+            type = "zstd";
+
+            # Compression level
+            #level = 8;
+          };
+
+          # Garbage collection
+          garbage-collection = {
+            # The frequency to run garbage collection at
+            #
+            # By default it's 12 hours. You can use natural language
+            # to specify the interval, like "1 day".
+            #
+            # If zero, automatic garbage collection is disabled, but
+            # it can still be run manually with `atticd --mode garbage-collector-once`.
+            interval = "12 hours";
+
+            # Default retention period
+            #
+            # Zero (default) means time-based garbage-collection is
+            # disabled by default. You can enable it on a per-cache basis.
+            #default-retention-period = "6 months";
+          };
+
+          # jwt = {
+          # WARNING: Changing _anything_ in this section will break any existing
+          # tokens. If you need to regenerate them, ensure that you use the the
+          # correct secret and include the `iss` and `aud` claims.
+
+          # JWT `iss` claim
+          #
+          # Set this to the JWT issuer that you want to validate.
+          # If this is set, all received JWTs will validate that the `iss` claim
+          # matches this value.
+          #token-bound-issuer = "some-issuer";
+
+          # JWT `aud` claim
+          #
+          # Set this to the JWT audience(s) that you want to validate.
+          # If this is set, all received JWTs will validate that the `aud` claim
+          # contains at least one of these values.
+          #token-bound-audiences = ["some-audience1", "some-audience2"];
+          # };
+
+          # jwt.signing = {
+          # You must configure JWT signing and verification inside your TOML configuration by setting one of the following options in the [jwt.signing] block:
+          # * token-rs256-pubkey-base64
+          # * token-rs256-secret-base64
+          # * token-hs256-secret-base64
+          # or by setting one of the following environment variables:
+          # * ATTIC_SERVER_TOKEN_RS256_PUBKEY_BASE64
+          # * ATTIC_SERVER_TOKEN_RS256_SECRET_BASE64
+          # * ATTIC_SERVER_TOKEN_HS256_SECRET_BASE64
+          # Options will be tried in that same order (configuration options first, then environment options if none of the configuration options were set, starting with the respective RSA pubkey option, the RSA secret option, and finally the HMAC secret option). The first option that is found will be used.
+          # If an RS256 pubkey (asymmetric RSA PEM PKCS1 public key) is provided, it will only be possible to verify received JWTs, and not sign new JWTs.
+          # If an RS256 secret (asymmetric RSA PEM PKCS1 private key) is provided, it will be used for both signing new JWTs and verifying received JWTs.
+          # If an HS256 secret (symmetric HMAC secret) is provided, it will be used for both signing new JWTs and verifying received JWTs.
+
+          # JWT RS256 secret key
+          #
+          # Set this to the base64-encoded private half of an RSA PEM PKCS1 key.
+          # TODO
+          # You can also set it via the `ATTIC_SERVER_TOKEN_RS256_SECRET_BASE64`
+          # environment variable.
+          # token-rs256-secret-base64 = "%token_rs256_secret_base64%";
+
+          # JWT HS256 secret key
+          #
+          # Set this to the base64-encoded HMAC secret key.
+          # You can also set it via the `ATTIC_SERVER_TOKEN_HS256_SECRET_BASE64`
+          # environment variable.
+          #token-hs256-secret-base64 = "";
+          # };
+        };
+      };
+    })
+  ];
+}

services/fediversity/attic/options.nix

@@ -0,0 +1,14 @@
+{ config, lib, ... }:
+
+{
+  options.fediversity.attic =
+    (import ../sharedOptions.nix {
+      inherit config lib;
+      serviceName = "attic";
+      serviceDocName = "Attic Nix Cache server";
+    })
+    //
+
+    {
+    };
+}

services/fediversity/default.nix

@@ -13,6 +13,7 @@ in
     ./mastodon
     ./pixelfed
     ./peertube
+    ./attic
   ];
 
   options = {
@@ -65,4 +66,16 @@ in
       };
     };
   };
+
+  config = {
+    ## FIXME: This should clearly go somewhere else; and we should have a
+    ## `staging` vs. `production` setting somewhere.
+    # use a priority higher than mkDefault for panel deployment to work,
+    # yet lower than default so this will not clash with the setting in tests.
+    security.acme = lib.modules.defaultOverridePriority {
+      acceptTerms = true;
+      defaults.email = "something@fediversity.net";
+      # defaults.server = "https://acme-staging-v02.api.letsencrypt.org/directory";
+    };
+  };
 }