nix setup

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -1,2 +1,3 @@
 /target
-.env
+.env
+result

flake.lock

@@ -0,0 +1,107 @@
+{
+  "nodes": {
+    "crane": {
+      "locked": {
+        "lastModified": 1763938834,
+        "narHash": "sha256-j8iB0Yr4zAvQLueCZ5abxfk6fnG/SJ5JnGUziETjwfg=",
+        "owner": "ipetkov",
+        "repo": "crane",
+        "rev": "d9e753122e51cee64eb8d2dddfe11148f339f5a2",
+        "type": "github"
+      },
+      "original": {
+        "owner": "ipetkov",
+        "repo": "crane",
+        "type": "github"
+      }
+    },
+    "flakelight": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1770037869,
+        "narHash": "sha256-ydw7wUkviUdv7J7YweFp6kxXl24QJgJ1+NC5S02gkz0=",
+        "owner": "nix-community",
+        "repo": "flakelight",
+        "rev": "49027dc3f2426de7cb2a6e29a13bbdd824f9b73a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "flakelight",
+        "type": "github"
+      }
+    },
+    "mill-scale": {
+      "inputs": {
+        "crane": "crane",
+        "flakelight": [
+          "flakelight"
+        ],
+        "rust-overlay": "rust-overlay"
+      },
+      "locked": {
+        "lastModified": 1764619631,
+        "narHash": "sha256-WojMP5S9qLmOLecEQ+7+yc33Ly1ydoRsODNG6hlLqiQ=",
+        "ref": "refs/heads/main",
+        "rev": "0fae557bf52d8493840aca52d433c473ecc305ef",
+        "revCount": 67,
+        "type": "git",
+        "url": "https://codeberg.org/icewind/mill-scale.git"
+      },
+      "original": {
+        "type": "git",
+        "url": "https://codeberg.org/icewind/mill-scale.git"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1770464364,
+        "narHash": "sha256-z5NJPSBwsLf/OfD8WTmh79tlSU8XgIbwmk6qB1/TFzY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "23d72dabcb3b12469f57b37170fcbc1789bd7457",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-25.11",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flakelight": "flakelight",
+        "mill-scale": "mill-scale",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": [
+          "mill-scale",
+          "flakelight",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1764557621,
+        "narHash": "sha256-kX5PoY8hQZ80+amMQgOO9t8Tc1JZ70gYRnzaVD4AA+o=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "93316876c2229460a5d6f5f052766cc4cef538ce",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,30 @@
+{
+  inputs = {
+    nixpkgs.url = "nixpkgs/nixos-25.11";
+    flakelight = {
+      url = "github:nix-community/flakelight";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    mill-scale = {
+      url = "git+https://codeberg.org/icewind/mill-scale.git";
+      inputs.flakelight.follows = "flakelight";
+    };
+  };
+  outputs = {mill-scale, ...}:
+    mill-scale ./. {
+      nixosModules = {outputs, ...}: {
+        default = {
+          pkgs,
+          config,
+          lib,
+          ...
+        }: {
+          imports = [./nix/module.nix];
+          config = lib.mkIf config.services.demostf-cleanup.enable {
+            nixpkgs.overlays = [outputs.overlays.default];
+            services.demostf-cleanup.package = lib.mkDefault pkgs.demostf-cleanup;
+          };
+        };
+      };
+    };
+}

nix/module.nix

@@ -0,0 +1,126 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+with lib; let
+  cfg = config.services.demostf-cleanup;
+  format = pkgs.formats.toml {};
+  configFile = format.generate "demostf-cleanup.toml" {
+    api = {
+      url = cfg.source;
+      key_file = "$CREDENTIALS_DIRECTORY/api_key";
+    };
+    storage = {
+      root = cfg.storageRoot;
+    };
+    cleanup = {
+      from_backend = cfg.backend;
+      age = cfg.age;
+    };
+  };
+in {
+  options.services.demostf-cleanup = {
+    enable = mkEnableOption "demostf-cleanup";
+
+    source = mkOption {
+      type = types.str;
+      default = "https://api.demos.tf";
+      description = "Api endpoint to cleanup demos for";
+    };
+
+    storageRoot = mkOption {
+      type = types.str;
+      description = "path local demo files are stored at";
+    };
+
+    backend = mkOption {
+      type = types.str;
+      description = "name of the local demos backend";
+    };
+
+    age = mkOption {
+      type = types.int;
+      default = 157784629; # 5 years
+      description = "age of demos to cleanup";
+    };
+
+    keyFile = mkOption {
+      type = types.str;
+      description = "path containing the edit secret";
+    };
+
+    user = mkOption {
+      type = types.str;
+      description = "user that owns the local demos";
+    };
+
+    log = mkOption {
+      type = types.str;
+      default = "info";
+      description = "log level";
+    };
+
+    interval = mkOption {
+      type = types.str;
+      default = "*:0/10";
+      description = "how often to run";
+    };
+
+    package = mkOption {
+      type = types.package;
+      defaultText = literalExpression "pkgs.demostf-cleanup";
+      description = "package to use";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.services."demostf-cleanup" = {
+      environment = {
+        RUST_LOG = cfg.log;
+      };
+
+      serviceConfig = {
+        ExecStart = "${getExe cfg.package} ${configFile}";
+        ReadWritePaths = [cfg.storageRoot];
+        LoadCredential = [
+          "api_key:${cfg.keyFile}"
+        ];
+        Restart = "on-failure";
+        User = cfg.user;
+        PrivateTmp = true;
+        ProtectSystem = "strict";
+        ProtectHome = true;
+        NoNewPrivileges = true;
+        PrivateDevices = true;
+        ProtectClock = true;
+        CapabilityBoundingSet = true;
+        ProtectKernelLogs = true;
+        ProtectControlGroups = true;
+        SystemCallArchitectures = "native";
+        ProtectKernelModules = true;
+        RestrictNamespaces = true;
+        MemoryDenyWriteExecute = true;
+        ProtectHostname = true;
+        LockPersonality = true;
+        ProtectKernelTunables = true;
+        RestrictAddressFamilies = ["AF_INET" "AF_INET6"];
+        RestrictRealtime = true;
+        ProtectProc = "noaccess";
+        SystemCallFilter = ["@system-service" "~@resources" "~@privileged"];
+        IPAddressDeny = ["localhost" "link-local" "multicast"];
+        ProcSubset = "pid";
+      };
+    };
+
+    systemd.timers."demostf-cleanup" = {
+      enable = true;
+      description = "Cleanup demos for demos.tf";
+      wantedBy = ["multi-user.target"];
+      timerConfig = {
+        OnCalendar = cfg.interval;
+      };
+    };
+  };
+}

nix/overlay.nix

@@ -0,0 +1,3 @@
+final: prev: {
+  demostf-cleanup = final.callPackage ./package.nix {};
+}

nix/package.nix

@@ -0,0 +1,31 @@
+{
+  rustPlatform,
+  lib,
+  openssl,
+  pkg-config,
+}: let
+  inherit (lib.sources) sourceByRegex;
+  inherit (builtins) fromTOML readFile;
+  src = sourceByRegex ../. ["Cargo.*" "(src)(/.*)?"];
+  cargoPackage = (fromTOML (readFile ../Cargo.toml)).package;
+in
+  rustPlatform.buildRustPackage {
+    pname = cargoPackage.name;
+    inherit (cargoPackage) version;
+
+    inherit src;
+
+    buildInputs = [
+      openssl
+    ];
+
+    nativeBuildInputs = [
+      pkg-config
+    ];
+
+    cargoLock = {
+      lockFile = ../Cargo.lock;
+    };
+
+    meta.mainProgram = "cleanup";
+  }

src/main.rs

@@ -4,6 +4,7 @@ use crate::config::Config;
 use clap::Parser;
 use demostf_client::{ApiClient, ListOrder, ListParams};
 use main_error::MainError;
+use secretfile::load;
 use std::fs::remove_file;
 use std::path::PathBuf;
 use time::{Duration, OffsetDateTime};