add actual wiki configuration and lots of modernisations

.sops.yaml

@@ -0,0 +1,9 @@
+keys:
+  - &joerg age17n64ahe3wesh8l8lj0zylf4nljdmqn28hvqns2g7hgm9mdkhlsvsjuvkxz
+  - &nixos-wiki2 age1p3dl7q5ahjdhl3g72mqk9pxy3gcptw9dqmg6syq9f9s03ppqp4rsqm93n2
+creation_rules:
+  - path_regex: targets/nixos-wiki2\.thalheim\.io/secrets\.yaml$
+    key_groups:
+    - age:
+      - *joerg
+      - *nixos-wiki2

bors.toml

@@ -1,8 +0,0 @@
-cut_body_after = "" # don't include text from the PR body in the merge commit message
-status = [
-  "Evaluate flake.nix",
-  "check treefmt [x86_64-linux]",
-  "package default [x86_64-linux]",
-  "nixosConfig nixos-wiki-thalheim-io",
-  "nixosConfig staging-nixos-wiki-thalheim-io",
-]

flake.lock

@@ -61,10 +61,32 @@
         "disko": "disko",
         "flake-parts": "flake-parts",
         "nixpkgs": "nixpkgs",
+        "sops-nix": "sops-nix",
         "srvos": "srvos",
         "treefmt-nix": "treefmt-nix"
       }
     },
+    "sops-nix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "nixpkgs-stable": []
+      },
+      "locked": {
+        "lastModified": 1697943852,
+        "narHash": "sha256-DaBxUPaZhQ3yLCmAATshYB7qo7NwcMvSFWz9T3bjYYY=",
+        "owner": "Mic92",
+        "repo": "sops-nix",
+        "rev": "30a0ba4a20703b4bfe047fe5def1fc24978e322c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Mic92",
+        "repo": "sops-nix",
+        "type": "github"
+      }
+    },
     "srvos": {
       "inputs": {
         "nixpkgs": [

flake.nix

@@ -14,6 +14,10 @@
     srvos.url = "github:numtide/srvos";
     # Use the version of nixpkgs that has been tested to work with SrvOS
     srvos.inputs.nixpkgs.follows = "nixpkgs";
+
+    sops-nix.url = "github:Mic92/sops-nix";
+    sops-nix.inputs.nixpkgs.follows = "nixpkgs";
+    sops-nix.inputs.nixpkgs-stable.follows = "";
   };
 
   outputs = inputs@{ flake-parts, ... }:
@@ -35,6 +39,7 @@
         in pkgs.mkShell {
           packages = [
             pkgs.bashInteractive
+            pkgs.sops
             (terraformHalal.withPlugins (p: [
               p.netlify
               p.hcloud

modules/flake-module.nix

@@ -2,12 +2,19 @@
   flake.nixosModules = {
     hcloud.imports = [
       inputs.srvos.nixosModules.server
+      inputs.sops-nix.nixosModules.sops
       inputs.srvos.nixosModules.hardware-hetzner-cloud
       ./single-disk.nix
+      {
+        sops.age.keyFile = "/var/lib/secrets/age";
+      }
     ];
 
     nixos-wiki.imports = [
-      ./nixos-wiki.nix
+      ./nixos-wiki
+    ];
+    nixos-wiki-backup.imports = [
+      ./nixos-wiki/backup.nix
     ];
   };
 }

modules/nixos-wiki.nix

@@ -1 +0,0 @@
-{ ... }: { }

modules/nixos-wiki/backup.nix

@@ -0,0 +1,78 @@
+{ config, pkgs, ... }:
+let
+  wikiDump = "/var/backup/wikidump.xml.gz";
+
+  mediawiki-maintenance = pkgs.runCommand "mediawiki-maintenance"
+    {
+      nativeBuildInputs = [ pkgs.makeWrapper ];
+      preferLocalBuild = true;
+    } ''
+    mkdir -p $out/bin
+    makeWrapper ${pkgs.php}/bin/php $out/bin/mediawiki-maintenance \
+      --set MEDIAWIKI_CONFIG ${config.services.phpfpm.pools.mediawiki.phpEnv.MEDIAWIKI_CONFIG} \
+      --add-flags ${config.services.mediawiki.finalPackage}/share/mediawiki/maintenance/run.php
+  '';
+
+  wiki-restore = pkgs.writeShellApplication {
+    name = "wiki-restore";
+    runtimeInputs = [
+      pkgs.postgresql
+      pkgs.coreutils
+      pkgs.util-linux
+      mediawiki-maintenance
+    ];
+    text = ''
+      tmpdir=$(mktemp -d)
+      cleanup() { rm -rf "$tmpdir"; }
+      cd "$tmpdir"
+      chown mediawiki:nginx "$tmpdir"
+
+      rm -rf /var/lib/mediawiki-uploads
+      install -d -m 755 -o mediawiki -g nginx /var/lib/mediawiki-uploads
+      systemctl stop phpfpm-mediawiki.service
+      runuser -u postgres -- dropdb mediawiki
+      systemctl restart postgresql
+      systemctl restart mediawiki-init.service
+      cat <<EOF | runuser -u mediawiki -- mediawiki-maintenance deleteBatch.php
+      Main_Page
+      MediaWiki:About
+      EOF
+      trap cleanup EXIT
+      cp ${wikiDump} "$tmpdir"
+      chown mediawiki:nginx "$tmpdir/wikidump.xml.gz"
+      chmod 644 "$tmpdir/wikidump.xml.gz"
+      runuser -u mediawiki -- mediawiki-maintenance importDump.php --uploads "$tmpdir/wikidump.xml.gz"
+      runuser -u mediawiki -- mediawiki-maintenance rebuildrecentchanges.php
+      systemctl start phpfpm-mediawiki.service
+    '';
+  };
+in
+{
+  environment.systemPackages = [ mediawiki-maintenance ];
+
+  systemd.services.wiki-backup = {
+    startAt = "hourly";
+
+    serviceConfig = {
+      ExecStart = [
+        "${pkgs.wget}/bin/wget https://nixos.wiki/images/wikidump.xml.gz -O ${wikiDump}.new"
+        "${pkgs.coreutils}/bin/mv ${wikiDump}.new ${wikiDump}"
+      ];
+      Type = "oneshot";
+    };
+  };
+
+  systemd.services.wiki-restore = {
+    startAt = "daily";
+    path = [ pkgs.postgresql mediawiki-maintenance ];
+
+    serviceConfig = {
+      ExecStart = "${wiki-restore}/bin/wiki-restore";
+      Type = "oneshot";
+    };
+  };
+
+  services.nginx.virtualHosts.${config.services.mediawiki.nginx.hostName} = {
+    locations."=/wikidump.xml.gz".alias = wikiDump;
+  };
+}

modules/nixos-wiki/default.nix

@@ -0,0 +1,112 @@
+{ config, pkgs, lib, ... }:
+{
+  options = {
+    services.nixos-wiki = {
+      hostname = lib.mkOption {
+        type = lib.types.str;
+        description = "The hostname of the wiki";
+      };
+      githubClientId = lib.mkOption {
+        type = lib.types.str;
+        description = "The github client id for the wiki";
+      };
+    };
+  };
+
+  config = {
+    sops.secrets."nixos-wiki".owner = config.services.phpfpm.pools.mediawiki.user;
+    sops.secrets.nixos-wiki-github-client-secret.owner = config.services.phpfpm.pools.mediawiki.user;
+    services.mediawiki = {
+      enable = true;
+      webserver = "nginx";
+      database.type = "postgres";
+      nginx.hostName = config.services.nixos-wiki.hostname;
+      uploadsDir = "/var/lib/mediawiki-uploads/";
+      passwordFile = config.sops.secrets."nixos-wiki".path;
+
+      extensions.SyntaxHighlight_GeSHi = null; # provides <SyntaxHighlight> tags
+      extensions.ParserFunctions = null;
+      extensions.Cite = null;
+      extensions.VisualEditor = null;
+      extensions.AuthManagerOAuth = pkgs.fetchzip {
+        url = "https://github.com/mohe2015/AuthManagerOAuth/releases/download/v0.3.0/AuthManagerOAuth.zip";
+        hash = "sha256-4ev8LwuConmHzFm5cPr+ni9aYPDOHLArGoJhzdugEn4=";
+      }; # Github login
+      extensions.ConfirmEdit = null; # Combat SPAM with a simple Captcha
+      extensions.StopForumSpam = pkgs.fetchzip {
+        url = "https://extdist.wmflabs.org/dist/extensions/StopForumSpam-REL1_40-71b57ba.tar.gz";
+        hash = "sha256-g8v4zr11c2e4bY0BNipJ48miyAF4WTNvlSMgb/NxPBA=";
+      };
+
+      extraConfig = ''
+        #$wgDebugLogFile = "/var/log/mediawiki/debug.log";
+
+        # allow local login
+        $wgAuthManagerOAuthConfig = [
+          'github' => [
+            'clientId'                => '${config.services.nixos-wiki.githubClientId}',
+            'clientSecret'            => file_get_contents("${config.sops.secrets.nixos-wiki-github-client-secret.path}"),
+            'urlAuthorize'            => 'https://github.com/login/oauth/authorize',
+            'urlAccessToken'          => 'https://github.com/login/oauth/access_token',
+            'urlResourceOwnerDetails' => 'https://api.github.com/user'
+          ],
+        ];
+
+        # Enable account creation globally
+        $wgGroupPermissions['*']['createaccount'] = true;
+        $wgGroupPermissions['*']['autocreateaccount'] = true;
+
+        # Disable anonymous editing
+        $wgGroupPermissions['*']['edit'] = false;
+
+        # Allow svg upload
+        $wgFileExtensions[] = 'svg';
+        $wgSVGConverterPath = "${pkgs.imagemagick}/bin";
+
+        # Pretty URLs
+        $wgUsePathInfo = true;
+
+        # cache pages with APCu
+        $wgMainCacheType = CACHE_ACCEL;
+
+        # TODO: nixos favicon
+        #$wgFavicon = "/favicon.ico";
+        $wgDefaultSkin = 'vector-2022';
+        # configure logos for vector-2022: https://www.mediawiki.org/wiki/Manual:$wgLogos
+        $wgLogos = [
+          '1x' => '/nixos.png',
+          'icon' => '/nixos.png',
+        ];
+
+        # Combat SPAM with IP-Blocklists (StopForumSpam extension)
+        $wgEnableDnsBlacklist = true;
+        $wgDnsBlacklistUrls = array(
+          'dnsbl.dronebl.org'
+        );
+
+        # required for fancy VisualEditor extension
+        $wgGroupPermissions['user']['writeapi'] = true;
+
+        # Enable content security policy
+        $wgCSPHeader = true;
+
+        # Disallow framing
+        $wgEditPageFrameOptions = "DENY";
+
+        $wgEnableEmail = true;
+        $wgAllowHTMLEmail = false;
+        $wgEmergencyContact = "nixos-wiki-emergency@thalheim.io";
+        $wgPasswordSender   = "nixos-wiki@thalheim.io";           # Default FROM address
+        $wgNoReplyAddress   = "nixos-wiki-no-reply@thalheim.io";  # Default Reply-To address
+      '';
+    };
+
+    security.acme.acceptTerms = true;
+    services.nginx.virtualHosts.${config.services.mediawiki.nginx.hostName} = {
+      enableACME = lib.mkDefault true;
+      forceSSL = true;
+      locations."=/nixos.png".alias = ./nixos.png;
+    };
+  };
+
+}

modules/single-disk.nix

@@ -1,37 +1,28 @@
 { self, ... }:
 let
-  partitions = [
+  partitions = {
-    {
+    boot = {
-      name = "grub";
+      size = "1M";
-      end = "1M";
+      type = "EF02"; # for grub MBR
-      part-type = "primary";
+    };
-      flags = [ "bios_grub" ];
+    esp = {
-    }
+      size = "500M";
-    {
+      type = "EF00"; # for grub MBR
-      name = "ESP";
-      start = "1MiB";
-      end = "500MiB";
-      bootable = true;
       content = {
         type = "filesystem";
         format = "vfat";
         mountpoint = "/boot";
       };
-    }
+    };
-    {
+    root = {
-      name = "root";
+      size = "100%";
-      start = "100MiB";
-      end = "100%";
-      part-type = "primary";
-      bootable = true;
       content = {
         type = "filesystem";
-        # We use xfs because it has support for compression and has a quite good performance for databases
+        format = "ext4";
-        format = "xfs";
         mountpoint = "/";
       };
-    }
+    };
-  ];
+  };
 in
 {
   imports = [
@@ -42,8 +33,7 @@ in
       type = "disk";
       device = "/dev/sda";
       content = {
-        type = "table";
+        type = "gpt";
-        format = "gpt";
         inherit partitions;
       };
     };

targets/nixos-wiki.thalheim.io/apply.sh

@@ -1 +0,0 @@
-../staging.nixos-wiki.thalheim.io/apply.sh

targets/nixos-wiki.thalheim.io/configuration.nix

@@ -1,10 +0,0 @@
-{ self, ... }: let
-  nixosVars = builtins.fromJSON (builtins.readFile ./nixos-vars.json);
-in {
-  imports = [
-    self.nixosModules.nixos-wiki
-    self.nixosModules.hcloud
-  ];
-  users.users.root.openssh.authorizedKeys.keys = nixosVars.ssh_keys;
-  system.stateVersion = "23.05";
-}

targets/nixos-wiki2.thalheim.io/configuration.nix

@@ -0,0 +1,16 @@
+{ self, lib, ... }: let
+  nixosVars = builtins.fromJSON (builtins.readFile ./nixos-vars.json);
+in {
+  imports = [
+    self.nixosModules.nixos-wiki
+    self.nixosModules.nixos-wiki-backup
+    self.nixosModules.hcloud
+  ];
+  users.users.root.openssh.authorizedKeys.keys = nixosVars.ssh_keys;
+  system.stateVersion = "23.11";
+  services.nixos-wiki.hostname = "nixos-wiki2.thalheim.io";
+  security.acme.defaults.email = "joerg.letsencrypt@thalheim.io";
+  services.nixos-wiki.githubClientId = "Iv1.95ed182c83df1d22";
+  sops.defaultSopsFile = ./secrets.yaml;
+  boot.loader.grub.devices = lib.mkForce [ "/dev/sda" ];
+}

targets/nixos-wiki2.thalheim.io/nixos-vars.json

@@ -1 +1 @@
-{"ipv6_address":"2a01:4f9:c012:4d1e::1","ssh_keys":["ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKbBp2dH2X3dcU1zh+xW3ZsdYROKpJd3n13ssOP092qE joerg@turingmachine"]}
+{"ipv6_address":"2a01:4f9:c012:afb9::1","ssh_keys":["ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKbBp2dH2X3dcU1zh+xW3ZsdYROKpJd3n13ssOP092qE joerg@turingmachine"]}

targets/nixos-wiki2.thalheim.io/secrets.yaml

@@ -0,0 +1,32 @@
+nixos-wiki: ENC[AES256_GCM,data:PDVoovlVdCYr/rI6a8igNp8D7B6Ni+yY,iv:x/+Yro8tbSnEY+ELYx+UJKRzveidrpqHp7iC7e3ymc4=,tag:pgLVTxGqmOOQ6FMUgTLaYQ==,type:str]
+nixos-wiki-github-client-secret: ENC[AES256_GCM,data:ggkzMlolTHxo4Jh4fBN4Ot5RJgESovrRjZ6FmQkVuLAgQfX22KjE4w==,iv:plmxJQoRcaFZ1hmFHgOnUofp2pHrNITdL/a1d3tFtag=,tag:28MHko3esZKKXJps4GlTSQ==,type:str]
+age-key: ENC[AES256_GCM,data:ldlaCHNf99r6zaihQHXPZ0QyY6/KGZR3oRMKo7xiKH7EVjgmKzS8knjDDqwq29D25L1jbVPAmScPEHppbM58xU7nOx4lIpl3qKE=,iv:EHKnKwdHqlKwGrBNbCaoaB8m6xgYSJecUBJgtdZn8kU=,tag:xVs3HfQ8Qip65CIGti9k0w==,type:str]
+sops:
+    kms: []
+    gcp_kms: []
+    azure_kv: []
+    hc_vault: []
+    age:
+        - recipient: age17n64ahe3wesh8l8lj0zylf4nljdmqn28hvqns2g7hgm9mdkhlsvsjuvkxz
+          enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBlNm9scHFONkwwY3dzWEtH
+            TWJnSVgzQldBd1NsVS90MnVyQ3V6aFo5YVFJCjc2S3lUc3FUaTllZGQ2R2FFTTNj
+            cWRQSC80a2FWQm12cnhXTmJNN3lSOW8KLS0tIGpPL2ZzQzBpak9HV0lES05SZk5x
+            KzM1azdvWlZIVU5VWVd4Q1AyN1VNTDQKZPtiA9MWZMOi+u6d0/Cg4vlJnP8dcaRq
+            QQKfP3LYCRqWBIrAPP8LWhza3kEjh22Wquh8Zh1SJtq2tgGKy+Pt+A==
+            -----END AGE ENCRYPTED FILE-----
+        - recipient: age1p3dl7q5ahjdhl3g72mqk9pxy3gcptw9dqmg6syq9f9s03ppqp4rsqm93n2
+          enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBpaHFwd3B5YUFUcnR2TTFw
+            aTQ4UFFBUXFxL2pOcUhyTFAwQ1ZvTGlEQUFnCmlQeHBrb2NhQXovWEl4ODdvd0FI
+            b2JMOGpXRHB3cHVHZmt3UUx2SUdtc28KLS0tIHVTZ2FISTZWbmdPaWlTdUZsTG1I
+            OHk4MkVmaFozaWdRV1RpbVM0amEvQTgKHk2ZxC+ZMUzTWD6KS1miOtLCtXF9SN/t
+            2DDz5UAadLKaJ425AL3Qg4BhOZqUz4qPoyQvD/3aBKXg0IxXHgJCtQ==
+            -----END AGE ENCRYPTED FILE-----
+    lastmodified: "2023-10-24T15:17:00Z"
+    mac: ENC[AES256_GCM,data:jPInsdN9mTROhh+fyYb4JSy937fuSGr6lhRIZhDc8alOO7TYnF9GSbum3KPPHYLm8LPKLQK19umyik7a5P/c983sfRHhaOibAugtPQT3fzw0/jAjwUJ9F4t9zhrZ6k7KfU9eO/34vFM0uKYhq+wUV9ztgDLJbARmtO0Dka1ks7w=,iv:NudkNhomCsFlqkU/QjQcrsqoTdAJC7HzJDpRuqHCx7s=,tag:K20RqA4EcDmm5V27ZGPGpg==,type:str]
+    pgp: []
+    unencrypted_suffix: _unencrypted
+    version: 3.8.1

targets/nixos-wiki2.thalheim.io/terraform.tf

@@ -1,8 +1,8 @@
 terraform {
   backend "http" {
-    address        = "https://gitlab.com/api/v4/projects/45776186/terraform/state/nixos-wiki.thalheim.io"
+    address        = "https://gitlab.com/api/v4/projects/45776186/terraform/state/nixos-wiki2.thalheim.io"
-    lock_address   = "https://gitlab.com/api/v4/projects/45776186/terraform/state/nixos-wiki.thalheim.io/lock"
+    lock_address   = "https://gitlab.com/api/v4/projects/45776186/terraform/state/nixos-wiki2.thalheim.io/lock"
-    unlock_address = "https://gitlab.com/api/v4/projects/45776186/terraform/state/nixos-wiki.thalheim.io/lock"
+    unlock_address = "https://gitlab.com/api/v4/projects/45776186/terraform/state/nixos-wiki2.thalheim.io/lock"
     lock_method    = "POST"
     unlock_method  = "DELETE"
     retry_wait_min = "5"
@@ -11,12 +11,12 @@ terraform {
 
 module "wiki" {
   source           = "../../terraform/nixos-wiki"
-  netlify_dns_zone = "nixos-wiki.thalheim.io"
+  netlify_dns_zone = "nixos-wiki2.thalheim.io"
-  domain           = "nixos-wiki.thalheim.io"
+  domain           = "nixos-wiki2.thalheim.io"
-  nixos_flake_attr = "nixos-wiki-thalheim-io"
+  nixos_flake_attr = "nixos-wiki2-thalheim-io"
   nixos_vars_file  = "${path.module}/nixos-vars.json"
   tags = {
     Terraform = "true"
-    Target    = "nixos-wiki.thalheim.io"
+    Target    = "nixos-wiki2.thalheim.io"
   }
 }

targets/staging.nixos-wiki.thalheim.io/configuration.nix

@@ -1,10 +0,0 @@
-{ self, ... }: let
-  nixosVars = builtins.fromJSON (builtins.readFile ./nixos-vars.json);
-in {
-  imports = [
-    self.nixosModules.nixos-wiki
-    self.nixosModules.hcloud
-  ];
-  users.users.root.openssh.authorizedKeys.keys = nixosVars.ssh_keys;
-  system.stateVersion = "23.05";
-}

targets/staging.nixos-wiki.thalheim.io/terraform.tf

@@ -1,21 +0,0 @@
-terraform {
-  backend "http" {
-    address        = "https://gitlab.com/api/v4/projects/45776186/terraform/state/staging.nixos-wiki.thalheim.io"
-    lock_address   = "https://gitlab.com/api/v4/projects/45776186/terraform/state/staging.nixos-wiki.thalheim.io/lock"
-    unlock_address = "https://gitlab.com/api/v4/projects/45776186/terraform/state/staging.nixos-wiki.thalheim.io/lock"
-    lock_method    = "POST"
-    unlock_method  = "DELETE"
-    retry_wait_min = "5"
-  }
-}
-
-module "wiki" {
-  source           = "../../terraform/nixos-wiki"
-  netlify_dns_zone = "nixos-wiki.thalheim.io"
-  nixos_flake_attr = "nixos-wiki-thalheim-io"
-  nixos_vars_file  = "${path.module}/nixos-vars.json"
-  tags = {
-    Terraform = "true"
-    Target    = "staging-nixos-wiki.thalheim.io"
-  }
-}

terraform/nixos-wiki/decrypt-age-keys.sh

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+mkdir -p var/lib/secrets
+
+umask 0177
+sops --extract '["age-key"]' -d "secrets.yaml" > ./var/lib/secrets/age
+# restore umask
+umask 0022

terraform/nixos-wiki/main.tf

@@ -4,7 +4,7 @@ data "hcloud_ssh_keys" "nixos_wiki" {
 }
 
 resource "hcloud_server" "nixos_wiki" {
-  image       = "debian-10"
+  image       = "debian-11"
   keep_disk   = true
   name        = "nixos-wiki"
   server_type = var.server_type
@@ -21,15 +21,16 @@ resource "hcloud_server" "nixos_wiki" {
   }
 }
 
-#module "deploy" {
+module "deploy" {
-#  depends_on             = [local_file.nixos_vars]
+  depends_on             = [local_file.nixos_vars]
-#  source                 = "github.com/numtide/nixos-anywhere//terraform/all-in-one"
+  source                 = "github.com/numtide/nixos-anywhere//terraform/all-in-one"
-#  nixos_system_attr      = ".#nixosConfigurations.${var.nixos_flake_attr}.config.system.build.toplevel"
+  nixos_system_attr      = ".#nixosConfigurations.${var.nixos_flake_attr}.config.system.build.toplevel"
-#  nixos_partitioner_attr = ".#nixosConfigurations.${var.nixos_flake_attr}.config.system.build.diskoNoDeps"
+  nixos_partitioner_attr = ".#nixosConfigurations.${var.nixos_flake_attr}.config.system.build.diskoScriptNoDeps"
-#  target_host            = hcloud_server.nixos_wiki.ipv4_address
+  target_host            = hcloud_server.nixos_wiki.ipv4_address
-#  instance_id            = hcloud_server.nixos_wiki.id
+  instance_id            = hcloud_server.nixos_wiki.id
-#  debug_logging          = true
+  extra_files_script     = "${path.module}/decrypt-age-keys.sh"
-#}
+  debug_logging          = true
+}
 
 locals {
   nixos_vars = {

terraform/nixos-wiki/nixos_vars.tf

@@ -5,13 +5,13 @@ resource "local_file" "nixos_vars" {
 
   provisioner "local-exec" {
     interpreter = ["bash", "-c"]
-    command     = "git add -f '${local_file.nixos_vars.filename}'"
+    command     = "git add -f '${var.nixos_vars_file}'"
   }
   # also pro-actively add hosts and flake-module.nix to git so nix can find it.
   provisioner "local-exec" {
     interpreter = ["bash", "-c"]
     command     = <<EOT
-git add "$(dirname '${local_file.nixos_vars.filename}')"/{hosts,flake-module.nix}
+git add "$(dirname '${var.nixos_vars_file}')"/{hosts,flake-module.nix}
 EOT
     on_failure  = continue
   }