From 78dca93a80e8dcdb7f81cfe3e1358f1dd54c5af3 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 22 Oct 2021 13:52:04 +0200
Subject: [PATCH 01/26] WIP: nixos: system: add persist

This is the module that takes care of configuring impermanence at the
system level.

WIP:
    * address FIXMEs
    * activate home-manager persistence?
        * set `programs.fuse.userAllowOther = true;` ?
    * point `age` to persisted paths [1] ?
    * make sure all services and modules are persisted correctly...

[1]: https://github.com/lovesegfault/nix-config/commit/b1d18d25b8cc1e50c521020442b907de377a147d
---
 modules/nixos/system/default.nix         |  1 +
 modules/nixos/system/persist/default.nix | 67 ++++++++++++++++++++++++
 2 files changed, 68 insertions(+)
 create mode 100644 modules/nixos/system/persist/default.nix

diff --git a/modules/nixos/system/default.nix b/modules/nixos/system/default.nix
index e7a4dd3..e317d96 100644
--- a/modules/nixos/system/default.nix
+++ b/modules/nixos/system/default.nix
@@ -9,6 +9,7 @@
     ./language
     ./nix
     ./packages
+    ./persist
     ./podman
     ./printing
     ./users
diff --git a/modules/nixos/system/persist/default.nix b/modules/nixos/system/persist/default.nix
new file mode 100644
index 0000000..4c0682c
--- /dev/null
+++ b/modules/nixos/system/persist/default.nix
@@ -0,0 +1,67 @@
+# Ephemeral root configuration
+{ config, inputs, lib, ... }:
+let
+  cfg = config.my.system.persist;
+in
+{
+  imports = [
+    inputs.impermanence.nixosModules.impermanence
+  ];
+
+  options.my.system.persist = with lib; {
+    enable = mkEnableOption "stateless system configuration";
+
+    mountPoint = lib.mkOption {
+      type = types.str;
+      default = "/persistent";
+      example = "/etc/nix/persist";
+      description = ''
+        Which mount point should be used to persist this system's files and
+        directories.
+      '';
+    };
+
+    files = lib.mkOption {
+      type = with types; listOf str;
+      default = [ ];
+      example = [
+        "/etc/nix/id_rsa"
+      ];
+      description = ''
+        Additional files in the root to link to persistent storage.
+      '';
+    };
+
+    directories = lib.mkOption {
+      type = with types; listOf str;
+      default = [ ];
+      example = [
+        "/var/lib/libvirt"
+      ];
+      description = ''
+        Additional directories in the root to link to persistent storage.
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    environment.persistence."${cfg.mountPoint}" = {
+      files = [
+        "/etc/machine-id"
+      ]
+      ++ cfg.files
+      ;
+
+      directories = [
+        "/etc/nixos"
+        "/var/log"
+        "/var/lib/systemd/coredump"
+      ]
+      ++ (lib.optionals config.virtualisation.docker.enable [
+        "/var/lib/docker"
+      ])
+      ++ cfg.directories
+      ;
+    };
+  };
+}

From 05e0e4eb06e3675c324ce87c0794786720cd5957 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 22 Oct 2021 14:05:42 +0200
Subject: [PATCH 02/26] nixos: services: ssh-server: persist host keys

---
 modules/nixos/services/ssh-server/default.nix | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/modules/nixos/services/ssh-server/default.nix b/modules/nixos/services/ssh-server/default.nix
index 9ae0fa8..0cabc6f 100644
--- a/modules/nixos/services/ssh-server/default.nix
+++ b/modules/nixos/services/ssh-server/default.nix
@@ -20,6 +20,14 @@ in
       };
     };
 
+    # Persist SSH keys
+    my.system.persist.files = [
+      "/etc/ssh/ssh_host_ed25519_key"
+      "/etc/ssh/ssh_host_ed25519_key.pub"
+      "/etc/ssh/ssh_host_rsa_key"
+      "/etc/ssh/ssh_host_rsa_key.pub"
+    ];
+
     # Opens the relevant UDP ports.
     programs.mosh.enable = true;
   };

From ec91472afb765a7614882cb39d872a2bfe1f517b Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 22 Oct 2021 14:06:03 +0200
Subject: [PATCH 03/26] nixos: hardware: netowrking persist connections

---
 modules/nixos/hardware/networking/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/modules/nixos/hardware/networking/default.nix b/modules/nixos/hardware/networking/default.nix
index f0806fe..51dcfce 100644
--- a/modules/nixos/hardware/networking/default.nix
+++ b/modules/nixos/hardware/networking/default.nix
@@ -22,6 +22,11 @@ in
   config = lib.mkMerge [
     (lib.mkIf cfg.wireless.enable {
       networking.networkmanager.enable = true;
+
+      # Persist NetworkManager files
+      my.system.persist.directories = [
+        "/etc/NetworkManager/system-connections"
+      ];
     })
   ];
 }

From bd1cf024e6f6ea2eb2fe63a26f269e216bf0f452 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 22 Oct 2021 14:06:26 +0200
Subject: [PATCH 04/26] nixos: hardware: bluetooth: persist connections

---
 modules/nixos/hardware/bluetooth/default.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/modules/nixos/hardware/bluetooth/default.nix b/modules/nixos/hardware/bluetooth/default.nix
index 2d840f9..3dd44e6 100644
--- a/modules/nixos/hardware/bluetooth/default.nix
+++ b/modules/nixos/hardware/bluetooth/default.nix
@@ -18,6 +18,13 @@ in
       services.blueman.enable = true;
     }
 
+    # Persist bluetooth files
+    {
+      my.system.persist.directories = [
+        "/var/lib/bluetooth"
+      ];
+    }
+
     # Support for additional bluetooth codecs
     (lib.mkIf cfg.loadExtraCodecs {
       hardware.pulseaudio = {

From c7bbaf2ea05b7cf93d15dc2de8c1987e1427ddf1 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 22 Oct 2021 14:19:57 +0200
Subject: [PATCH 05/26] nixos: services: blog: persist website data

---
 modules/nixos/services/blog/default.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/modules/nixos/services/blog/default.nix b/modules/nixos/services/blog/default.nix
index 4b646c3..6752ac2 100644
--- a/modules/nixos/services/blog/default.nix
+++ b/modules/nixos/services/blog/default.nix
@@ -42,5 +42,12 @@ in
 
     # Those are all subdomains, no problem
     my.services.nginx.virtualHosts = hostsInfo;
+
+    my.system.persist.directories = [
+      "/var/www/blog"
+      "/var/www/cv"
+      "/var/www/dev"
+      "/var/www/key"
+    ];
   };
 }

From e10ba77067e4e63ad188c684d33ff8d71cfa23a8 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Wed, 3 Nov 2021 14:43:05 +0100
Subject: [PATCH 06/26] nixos: services: calibre-web: persist library

---
 modules/nixos/services/calibre-web/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/modules/nixos/services/calibre-web/default.nix b/modules/nixos/services/calibre-web/default.nix
index 858851c..b6e70d8 100644
--- a/modules/nixos/services/calibre-web/default.nix
+++ b/modules/nixos/services/calibre-web/default.nix
@@ -54,6 +54,11 @@ in
       ];
     };
 
+    my.system.persist.directories = [
+      "/var/lib/${config.services.calibre-web.dataDir}"
+      cfg.libraryPath
+    ];
+
     services.fail2ban.jails = {
       calibre-web = ''
         enabled = true

From b26397aef35aef42f81f8560d0556b24ab058698 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Wed, 3 Nov 2021 14:43:16 +0100
Subject: [PATCH 07/26] nixos: services: flood: persist data

---
 modules/nixos/services/flood/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/nixos/services/flood/default.nix b/modules/nixos/services/flood/default.nix
index ff5d941..79b6c75 100644
--- a/modules/nixos/services/flood/default.nix
+++ b/modules/nixos/services/flood/default.nix
@@ -46,5 +46,9 @@ in
         inherit (cfg) port;
       }
     ];
+
+    my.system.persist.directories = [
+      "/var/lib/${cfg.stateDir}"
+    ];
   };
 }

From 4880aa4577625bf665474c92b38bd37fec1a8595 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Wed, 3 Nov 2021 14:43:28 +0100
Subject: [PATCH 08/26] nixos: services: gitea: persist repositories

---
 modules/nixos/services/gitea/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/modules/nixos/services/gitea/default.nix b/modules/nixos/services/gitea/default.nix
index 28a448d..93edf57 100644
--- a/modules/nixos/services/gitea/default.nix
+++ b/modules/nixos/services/gitea/default.nix
@@ -135,6 +135,11 @@ in
       ];
     };
 
+    my.system.persist.directories = [
+      config.services.gitea.lfs.contentDir
+      config.services.gitea.repositoryRoot
+    ];
+
     services.fail2ban.jails = {
       gitea = ''
         enabled = true

From c4f9a0ca312f6b1c182e02e13f5815c7e9cabf6a Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Wed, 3 Nov 2021 17:12:32 +0100
Subject: [PATCH 09/26] nixos: services: matrix: persist data

---
 modules/nixos/services/matrix/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/nixos/services/matrix/default.nix b/modules/nixos/services/matrix/default.nix
index 52b60c5..87494c9 100644
--- a/modules/nixos/services/matrix/default.nix
+++ b/modules/nixos/services/matrix/default.nix
@@ -257,5 +257,9 @@ in
         config.services.matrix-synapse.dataDir
       ];
     };
+
+    my.system.persist.directories = [
+      config.services.matrix-synapse.dataDir
+    ];
   };
 }

From 302e3353402a2f07954be70557752e844a9132b8 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Wed, 3 Nov 2021 17:12:42 +0100
Subject: [PATCH 10/26] nixos: services: paperless: persist data

---
 modules/nixos/services/paperless/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/modules/nixos/services/paperless/default.nix b/modules/nixos/services/paperless/default.nix
index 1ca1f66..702627d 100644
--- a/modules/nixos/services/paperless/default.nix
+++ b/modules/nixos/services/paperless/default.nix
@@ -164,5 +164,10 @@ in
         config.services.paperless.mediaDir
       ];
     };
+
+    my.system.persist.directories = [
+      config.services.paperless-ng.dataDir
+      config.services.paperless-ng.mediaDir
+    ];
   };
 }

From dbd7810e5e06174026d6ce55d80cc15a61aab1bf Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Wed, 3 Nov 2021 17:12:58 +0100
Subject: [PATCH 11/26] nixos: services: postgresql-backup: persist data

---
 modules/nixos/services/postgresql-backup/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/nixos/services/postgresql-backup/default.nix b/modules/nixos/services/postgresql-backup/default.nix
index dff5494..3d6c03b 100644
--- a/modules/nixos/services/postgresql-backup/default.nix
+++ b/modules/nixos/services/postgresql-backup/default.nix
@@ -24,5 +24,9 @@ in
         (config.services.postgresqlBackup.location + "/*.prev.sql.gz")
       ];
     };
+
+    my.system.persist.directories = [
+      config.services.postgresqlBackup.location
+    ];
   };
 }

From eeba404b9043b98133868d6da530cdce4d2a25f3 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Wed, 3 Nov 2021 17:13:13 +0100
Subject: [PATCH 12/26] nixos: services: postgresql: persist data

---
 modules/nixos/services/postgresql/default.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/modules/nixos/services/postgresql/default.nix b/modules/nixos/services/postgresql/default.nix
index 6f51f3e..175c1ce 100644
--- a/modules/nixos/services/postgresql/default.nix
+++ b/modules/nixos/services/postgresql/default.nix
@@ -18,6 +18,13 @@ in
       };
     })
 
+    # Only persist directory if the actual service is enabled
+    (lib.mkIf config.services.postgresql.enable {
+      my.system.persist.directories = [
+        config.services.postgresql.dataDir
+      ];
+    })
+
     # Taken from the manual
     (lib.mkIf cfg.upgradeScript {
       containers.temp-pg.config.services.postgresql = {

From fb0e1174393ef82c260f30c0019181640396edb4 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 5 Nov 2021 14:30:25 +0100
Subject: [PATCH 13/26] nixos: services: indexers: persist data

---
 modules/nixos/services/indexers/default.nix | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/modules/nixos/services/indexers/default.nix b/modules/nixos/services/indexers/default.nix
index fb06a0b..28a7007 100644
--- a/modules/nixos/services/indexers/default.nix
+++ b/modules/nixos/services/indexers/default.nix
@@ -34,6 +34,10 @@ in
           port = jackettPort;
         }
       ];
+
+      my.system.persist.directories = [
+        config.services.jackett.dataDir
+      ];
     })
 
     (lib.mkIf cfg.nzbhydra.enable {
@@ -47,6 +51,10 @@ in
           port = nzbhydraPort;
         }
       ];
+
+      my.system.persist.directories = [
+        config.services.nzbhydra2.dataDir
+      ];
     })
 
     (lib.mkIf cfg.prowlarr.enable {
@@ -61,6 +69,10 @@ in
         }
       ];
 
+      my.system.persist.directories = [
+        "/var/lib/${config.systemd.services.prowlarr.serviceConfig.StateDirectory}"
+      ];
+
       services.fail2ban.jails = {
         prowlarr = ''
           enabled = true

From 12bb5eb97a4eaa27df0c4a6c37bd3e4f8a196e82 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 5 Nov 2021 15:11:05 +0100
Subject: [PATCH 14/26] nixos: services: jellyfin: persist data

---
 modules/nixos/services/jellyfin/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/nixos/services/jellyfin/default.nix b/modules/nixos/services/jellyfin/default.nix
index 2fcf51e..0692dcc 100644
--- a/modules/nixos/services/jellyfin/default.nix
+++ b/modules/nixos/services/jellyfin/default.nix
@@ -35,5 +35,9 @@ in
         };
       }
     ];
+
+    my.system.persist.directories = [
+      "/var/lib/${config.systemd.services.jellyfin.serviceConfig.StateDirectory}"
+    ];
   };
 }

From 7195a64f89d0e5f8adddc472cdb961c52f9cccf9 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 5 Nov 2021 15:11:12 +0100
Subject: [PATCH 15/26] nixos: services: lohr: persist data

---
 modules/nixos/services/lohr/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/nixos/services/lohr/default.nix b/modules/nixos/services/lohr/default.nix
index 245567c..7aac1ac 100644
--- a/modules/nixos/services/lohr/default.nix
+++ b/modules/nixos/services/lohr/default.nix
@@ -104,5 +104,9 @@ in
         inherit (cfg) port;
       }
     ];
+
+    my.system.persist.directories = [
+      "/var/lib/${config.systemd.services.lohr.serviceConfig.StateDirectory}"
+    ];
   };
 }

From 12fbd39bdccb36fdd18f64f0904afa23ab583765 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 5 Nov 2021 15:11:23 +0100
Subject: [PATCH 16/26] nixos: services: navidrome: persist data

---
 modules/nixos/services/navidrome/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/nixos/services/navidrome/default.nix b/modules/nixos/services/navidrome/default.nix
index 6c001fd..08c6a88 100644
--- a/modules/nixos/services/navidrome/default.nix
+++ b/modules/nixos/services/navidrome/default.nix
@@ -53,5 +53,9 @@ in
         inherit (cfg) port;
       }
     ];
+
+    my.system.persist.directories = [
+      "/var/lib/${config.systemd.services.navidrome.serviceConfig.StateDirectory}"
+    ];
   };
 }

From f71fcd14f18dba3bf5080af0f2f968c338e51733 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 5 Nov 2021 15:11:35 +0100
Subject: [PATCH 17/26] nixos: services: nextcloud: persist data

---
 modules/nixos/services/nextcloud/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/modules/nixos/services/nextcloud/default.nix b/modules/nixos/services/nextcloud/default.nix
index 260e73e..b9578f8 100644
--- a/modules/nixos/services/nextcloud/default.nix
+++ b/modules/nixos/services/nextcloud/default.nix
@@ -82,5 +82,10 @@ in
         "${config.services.nextcloud.home}/data/appdata_*/preview"
       ];
     };
+
+    my.system.persist.directories = [
+      config.services.nextcloud.home
+      config.services.nextcloud.datadir
+    ];
   };
 }

From 8066b2d77b77beb8b79d9e1bb218f21a34d9a357 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 5 Nov 2021 15:20:11 +0100
Subject: [PATCH 18/26] nixos: services: podgrab: persist data

---
 modules/nixos/services/podgrab/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/modules/nixos/services/podgrab/default.nix b/modules/nixos/services/podgrab/default.nix
index 9793d60..2994fc8 100644
--- a/modules/nixos/services/podgrab/default.nix
+++ b/modules/nixos/services/podgrab/default.nix
@@ -37,5 +37,10 @@ in
         inherit (cfg) port;
       }
     ];
+
+    my.system.persist.directories =
+      builtins.map
+        (d: "/var/lib/${d}")
+        config.systemd.services.podgrab.serviceConfig.StateDirectory;
   };
 }

From 50cf2906d12a23776b1fa845b68af87c840bfdcf Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 5 Nov 2021 15:21:42 +0100
Subject: [PATCH 19/26] nixos: services: rss-bridge: persist data

---
 modules/nixos/services/rss-bridge/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/nixos/services/rss-bridge/default.nix b/modules/nixos/services/rss-bridge/default.nix
index 85e37c2..66858dc 100644
--- a/modules/nixos/services/rss-bridge/default.nix
+++ b/modules/nixos/services/rss-bridge/default.nix
@@ -20,5 +20,9 @@ in
       forceSSL = true;
       useACMEHost = config.networking.domain;
     };
+
+    my.system.persist.directories = [
+      config.services.rss-bridge.dataDir
+    ];
   };
 }

From 8bd965441adebe9cecca5116250c5689721b397c Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 5 Nov 2021 15:25:44 +0100
Subject: [PATCH 20/26] nixos: services: sabnzbd: persist data

---
 modules/nixos/services/sabnzbd/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/nixos/services/sabnzbd/default.nix b/modules/nixos/services/sabnzbd/default.nix
index 7ab145f..ef13d4b 100644
--- a/modules/nixos/services/sabnzbd/default.nix
+++ b/modules/nixos/services/sabnzbd/default.nix
@@ -25,6 +25,10 @@ in
       }
     ];
 
+    my.system.persist.files = [
+      config.services.sabnzbd.configFile
+    ];
+
     services.fail2ban.jails = {
       sabnzbd = ''
         enabled = true

From e2b1478d401edfc530ad25e8d7f3b145c828a2c5 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 5 Nov 2021 15:25:50 +0100
Subject: [PATCH 21/26] nixos: services: transmission: persist data

---
 modules/nixos/services/transmission/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/nixos/services/transmission/default.nix b/modules/nixos/services/transmission/default.nix
index 28df477..37e4f0f 100644
--- a/modules/nixos/services/transmission/default.nix
+++ b/modules/nixos/services/transmission/default.nix
@@ -91,5 +91,9 @@ in
       allowedTCPPorts = [ cfg.peerPort ];
       allowedUDPPorts = [ cfg.peerPort ];
     };
+
+    my.system.persist.directories = [
+      config.services.transmission.home
+    ];
   };
 }

From 46e22fbb9c7d3315141cefffd58b6d70a0cf4116 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 5 Nov 2021 15:37:51 +0100
Subject: [PATCH 22/26] nixos: services: nginx: persist SSL certificates

---
 modules/nixos/services/nginx/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/nixos/services/nginx/default.nix b/modules/nixos/services/nginx/default.nix
index 6ca2e42..a28c2be 100644
--- a/modules/nixos/services/nginx/default.nix
+++ b/modules/nixos/services/nginx/default.nix
@@ -467,5 +467,9 @@ in
         }
       ];
     };
+
+    my.system.persist.directories = [
+      config.users.user.acme.home
+    ];
   };
 }

From 7206c7691b16638c4f9421ee082cba5ec4ff4eb0 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 5 Nov 2021 15:40:29 +0100
Subject: [PATCH 23/26] nixos: services: monitoring: persist data

---
 modules/nixos/services/monitoring/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/modules/nixos/services/monitoring/default.nix b/modules/nixos/services/monitoring/default.nix
index 829bfe0..c7489f4 100644
--- a/modules/nixos/services/monitoring/default.nix
+++ b/modules/nixos/services/monitoring/default.nix
@@ -131,5 +131,10 @@ in
         inherit (cfg.grafana) port;
       }
     ];
+
+    my.system.persist.directories = [
+      config.services.grafana.dataDir
+      "/var/lib/${config.services.prometheus.stateDir}"
+    ];
   };
 }

From 26dd4a41abc224677c05580ebbf9ee16b70b5866 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 5 Nov 2021 15:58:07 +0100
Subject: [PATCH 24/26] nixos: services: pirate: persist data

---
 modules/nixos/services/pirate/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/modules/nixos/services/pirate/default.nix b/modules/nixos/services/pirate/default.nix
index 59f9794..cfabc90 100644
--- a/modules/nixos/services/pirate/default.nix
+++ b/modules/nixos/services/pirate/default.nix
@@ -18,6 +18,11 @@ let
       enable = true;
       group = "media";
     };
+
+    # Thankfully those old style services all define users with homes
+    my.system.persist.directories = [
+      config.users.user.${service}.home
+    ];
   };
 
   mkRedirection = service: {

From c74469cea7ae6be3be9ab67a6967cf5aa2cbd9fc Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Fri, 5 Nov 2021 21:51:04 +0100
Subject: [PATCH 25/26] nixos: services: quassel: persist data

---
 modules/nixos/services/quassel/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/nixos/services/quassel/default.nix b/modules/nixos/services/quassel/default.nix
index ec686e1..18d084a 100644
--- a/modules/nixos/services/quassel/default.nix
+++ b/modules/nixos/services/quassel/default.nix
@@ -46,5 +46,9 @@ in
       # Because Quassel does not use the socket, I simply trust its connection
       authentication = "host quassel quassel localhost trust";
     };
+
+    my.system.persist.directories = [
+      config.services.quassel.dataDir
+    ];
   };
 }

From bcbcee5912a54014fc81f11d8e420abf4cb61bab Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Thu, 21 Sep 2023 15:55:56 +0000
Subject: [PATCH 26/26] WIP: add notes for missing persistence/backup

TODO:
* Look at for more inspiration https://github.com/nix-community/impermanence/pull/108
* Do home-manager
* Common files https://github.com/nix-community/impermanence/issues/10
---
 modules/nixos/services/grocy/default.nix           | 3 +++
 modules/nixos/services/miniflux/default.nix        | 3 +++
 modules/nixos/services/tandoor-recipes/default.nix | 3 +++
 modules/nixos/services/vikunja/default.nix         | 2 ++
 modules/nixos/system/persist/default.nix           | 1 +
 5 files changed, 12 insertions(+)

diff --git a/modules/nixos/services/grocy/default.nix b/modules/nixos/services/grocy/default.nix
index 87927d6..4a3183e 100644
--- a/modules/nixos/services/grocy/default.nix
+++ b/modules/nixos/services/grocy/default.nix
@@ -36,5 +36,8 @@ in
       forceSSL = true;
       useACMEHost = config.networking.domain;
     };
+
+    # FIXME: backup
+    # FIXME: persistence
   };
 }
diff --git a/modules/nixos/services/miniflux/default.nix b/modules/nixos/services/miniflux/default.nix
index 6d9ffc8..4667912 100644
--- a/modules/nixos/services/miniflux/default.nix
+++ b/modules/nixos/services/miniflux/default.nix
@@ -49,5 +49,8 @@ in
         inherit (cfg) port;
       }
     ];
+
+    # FIXME: backup
+    # FIXME: persistence
   };
 }
diff --git a/modules/nixos/services/tandoor-recipes/default.nix b/modules/nixos/services/tandoor-recipes/default.nix
index 83177c8..3688363 100644
--- a/modules/nixos/services/tandoor-recipes/default.nix
+++ b/modules/nixos/services/tandoor-recipes/default.nix
@@ -76,5 +76,8 @@ in
         inherit (cfg) port;
       }
     ];
+
+    # FIXME: backup
+    # FIXME: persistence
   };
 }
diff --git a/modules/nixos/services/vikunja/default.nix b/modules/nixos/services/vikunja/default.nix
index 1cdef5f..076dd4a 100644
--- a/modules/nixos/services/vikunja/default.nix
+++ b/modules/nixos/services/vikunja/default.nix
@@ -119,5 +119,7 @@ in
         config.services.vikunja.settings.files.basepath
       ];
     };
+
+    # FIXME: persistence
   };
 }
diff --git a/modules/nixos/system/persist/default.nix b/modules/nixos/system/persist/default.nix
index 4c0682c..18302f3 100644
--- a/modules/nixos/system/persist/default.nix
+++ b/modules/nixos/system/persist/default.nix
@@ -60,6 +60,7 @@ in
       ++ (lib.optionals config.virtualisation.docker.enable [
         "/var/lib/docker"
       ])
+      # FIXME: podman
       ++ cfg.directories
       ;
     };