Merge remote-tracking branch 'lass/master'

51 files changed, 290 insertions, 382 deletions

diff --git a/krebs/2configs/ircd.nix b/krebs/2configs/ircd.nix
index d26aa5962..904878731 100644
--- a/krebs/2configs/ircd.nix
+++ b/krebs/2configs/ircd.nix
@@ -1,13 +1,13 @@
-{ config, pkgs, ... }:
+{ config, pkgs, lib, ... }:
 
 {
   networking.firewall.allowedTCPPorts = [
     6667 6669
   ];
 
-  systemd.services.solanum.serviceConfig.LimitNOFILE = 16384;
+  systemd.services.solanum.serviceConfig.LimitNOFILE = lib.mkForce 16384;
 
-  krebs.solanum = {
+  services.solanum = {
     enable = true;
     motd = ''
       hello
diff --git a/krebs/3modules/default.nix b/krebs/3modules/default.nix
index 149995a23..24b17487b 100644
--- a/krebs/3modules/default.nix
+++ b/krebs/3modules/default.nix
@@ -50,7 +50,6 @@ let
       ./secret.nix
       ./setuid.nix
       ./shadow.nix
-      ./solanum.nix
       ./sync-containers.nix
       ./tinc.nix
       ./tinc_graphs.nix
diff --git a/krebs/3modules/external/default.nix b/krebs/3modules/external/default.nix
index eff2967e0..28d58b525 100644
--- a/krebs/3modules/external/default.nix
+++ b/krebs/3modules/external/default.nix
@@ -150,6 +150,7 @@ in {
             "makanek.r"
             "makanek.kmein.r"
             "grafana.kmein.r"
+            "names.kmein.r"
           ];
           tinc.pubkey = ''
             -----BEGIN RSA PUBLIC KEY-----
@@ -263,6 +264,7 @@ in {
             "zaatar.r"
             "zaatar.kmein.r"
             "radio.kmein.r"
+            "bvg.kmein.r"
           ];
           tinc.pubkey = ''
             -----BEGIN RSA PUBLIC KEY-----
@@ -585,7 +587,7 @@ in {
      nets = {
        retiolum = {
          ip4.addr = "10.243.13.12";
-         aliases = [ "catalonia.r" "aleph.r" ];
+         aliases = [ "catalonia.r" ];
          tinc.pubkey = ''
            -----BEGIN RSA PUBLIC KEY-----
            MIICCgKCAgEAug+nej8/spuRHdzcfBYAuzUVoiq4YufmJqXSshvgf4aqjeVEt91Y
diff --git a/krebs/3modules/external/mic92.nix b/krebs/3modules/external/mic92.nix
index 3ef693290..b4e046303 100644
--- a/krebs/3modules/external/mic92.nix
+++ b/krebs/3modules/external/mic92.nix
@@ -256,6 +256,10 @@ in {
     okelmann = {
       owner = config.krebs.users.mic92;
       nets.retiolum = {
+        addrs = [
+          config.krebs.hosts.okelmann.nets.retiolum.ip4.addr
+          config.krebs.hosts.okelmann.nets.retiolum.ip6.addr
+        ];
         ip4.addr = "10.243.29.190";
           aliases = [
             "okelmann.r"
@@ -275,6 +279,10 @@ in {
     aendernix = {
       owner = config.krebs.users.mic92;
       nets.retiolum = {
+        addrs = [
+          config.krebs.hosts.aendernix.nets.retiolum.ip4.addr
+          config.krebs.hosts.aendernix.nets.retiolum.ip6.addr
+        ];
         ip4.addr = "10.243.29.172";
         aliases = [
           "aendernix.r"
@@ -296,6 +304,30 @@ in {
         '';
       };
     };
+    aenderpad = {
+      owner = config.krebs.users.mic92;
+      nets.retiolum = {
+        addrs = [
+          config.krebs.hosts.aenderpad.nets.retiolum.ip4.addr
+          config.krebs.hosts.aenderpad.nets.retiolum.ip6.addr
+        ];
+        ip4.addr = "10.243.29.201";
+        aliases = [
+          "aendernix.r"
+        ];
+        tinc.pubkey = ''
+          -----BEGIN RSA PUBLIC KEY-----
+          MIIBCgKCAQEAvHSVUd6/5P2rK3s9iQhVrxkjufDIi0Kn04iVB4Z0TpUvnmFAP+Hv
+          d7umo95lNkAPL9c3byv4ooQjOskrp7GmgQRijLUvJSAZ9FBVWPAjMXs+gk9oJnQj
+          6bovXJ3DurmW3h1ZRmkWn256j7g8lEMtf5LGFxs9Bwi4wqZTbI6DzTQhmNm76Spb
+          2UMSzr9kDcNj5r6LDhDKEDtx4P1Opshgsf9AusV81N5nqDcvAYsvEqYoPvjKIPwF
+          5jtfHY7hM7SdYoVgdAY8RFH7xuRkLQW4LBxPKjP3pEQPCgXcuEELm33PGr+w/vhC
+          jxeyKP+uSeuBBMSatTWG3kU8W2LxVML65QIDAQAB
+          -----END RSA PUBLIC KEY-----
+          Ed25519PublicKey = jC2UzKiUtWUlZF2ET88qM+Ot+GpoWxFFfpi8TCCr0uM
+        '';
+      };
+    };
     dimitra = {
       owner = config.krebs.users.mic92;
       nets.retiolum = {
@@ -761,5 +793,81 @@ in {
         };
       };
     };
+
+
+    ryan = {
+      owner = config.krebs.users.mic92;
+      nets = rec {
+        retiolum = {
+          addrs = [
+            config.krebs.hosts.ryan.nets.retiolum.ip4.addr
+            config.krebs.hosts.ryan.nets.retiolum.ip6.addr
+          ];
+          ip4.addr = "10.243.29.198";
+          aliases = [ "ryan.r" ];
+          tinc.pubkey = ''
+            -----BEGIN RSA PUBLIC KEY-----
+            MIIBCgKCAQEA0RE5jmBiEGmaYLVFmpCyVvlb6K3Zh2uxh7sVm44k31d9PEHHm4Wz
+            HQH+ueaefGVu19xLRJQGu4ZMl7oRbb5awiqKdSGgInhQaNzxUIHW4cCCdOVkgZSy
+            NjI9LMcc8tQtkoFGt6OhAzaViuGMo+aJAkLuXNf8hz5uR2flqQEeKfG5Kc7Z1DAQ
+            QNoBRtY0pltyK2y/Ip8cZ9cdxR5oLww67ykhY+eLy9tZLfKs6uWSq+2CV0cpNNQ9
+            Sh8fSbkjb4+JkxWAHDOyAnwFxnxstMcW0cscOW7nXYDi5IpvvesJlk698un7bLhm
+            vCkAd+WiNuTGfs9t0r6FDDVDREBhNk1sLwIDAQAB
+            -----END RSA PUBLIC KEY-----
+            Ed25519PublicKey = sOD149OLZ2yUEjRpwbGdwHULKF2qNY3F+9AsEi1G0ZM
+          '';
+        };
+      };
+    };
+
+    graham = {
+      owner = config.krebs.users.mic92;
+      nets = rec {
+        retiolum = {
+          addrs = [
+            config.krebs.hosts.graham.nets.retiolum.ip4.addr
+            config.krebs.hosts.graham.nets.retiolum.ip6.addr
+          ];
+          ip4.addr = "10.243.29.199";
+          aliases = [ "graham.r" ];
+          tinc.pubkey = ''
+            -----BEGIN RSA PUBLIC KEY-----
+            MIIBCgKCAQEAtnM8VqFlEPLPYfKOZvN4kKklrVEyX4WewlqHO8vtxML9ND5BHCdn
+            UeRsThvbKVRqEvZLTAXKClZRYVr2IroHqfx0euTq3FYTUbNNQ4KgcFAfLKWoxGfK
+            HsQbYpS93/sUtmhRBGcgXPnEkE6yqvFBXxcmB1QqdmgYKdY2Gtikwrv/5hb4AlNe
+            /gyzKGtAKYogspLI6EpEwlD9CGDNIUPJ4uQ56gDhV/qtyMSE6X0igSSVZayDc+x1
+            InPkH90xsa0/uXjYDnXNdMguLArGkRzMhd6DzK4vEaPFIX59yMX+tEj46rGY7xAI
+            gUZUI2codqY5Z93W5GC+ws34y0bpfeMMWwIDAQAB
+            -----END RSA PUBLIC KEY-----
+            Ed25519PublicKey = xMJNMMXZRCbWkN9CzLFohkGUK54dPcrrosFD7xgIFXA
+          '';
+        };
+      };
+    };
+
+    maurice = {
+      owner = config.krebs.users.mic92;
+      nets = rec {
+        retiolum = {
+          addrs = [
+            config.krebs.hosts.maurice.nets.retiolum.ip4.addr
+            config.krebs.hosts.maurice.nets.retiolum.ip6.addr
+          ];
+          ip4.addr = "10.243.29.200";
+          aliases = [ "maurice.r" ];
+          tinc.pubkey = ''
+            -----BEGIN RSA PUBLIC KEY-----
+            MIIBCgKCAQEAsLKBfPtZkjWGu6uitCV+4c5aQox2t4N8XNhY2mqE806XsYrqAC+y
+            d0oLOxRMUjfh9stDnEW/YRoLEKz9oZdRYd4eenP0Q3c3HdRFDBNCs27M5a8ysqZD
+            5w9+B+9OfUmMv61NyKiaR6WtoGbE849cj1UNk1z04elshfU7h829D8QnD4j1A1gf
+            bOaNG+RzOP6qP/6Q30rxAiTxRPi+FhcHvxa33y1ZVobvnfGcJa+AzsTbgH9T9Yob
+            GuXFZvuQVSyWOLOgY/vVml904q8gScMpBesAsZJ7DEXxSTga0Rt99Ti3d9ABwBI5
+            1YabQlGLaAkrj3PMgrDyayzGBDDDva9fEQIDAQAB
+            -----END RSA PUBLIC KEY-----
+            Ed25519PublicKey = pkMuJ4kbyleQAdau+sfmLtzTuUy7uL+wwcgV/GWC7/N
+          '';
+        };
+      };
+    };
   };
 }
diff --git a/krebs/3modules/fetchWallpaper.nix b/krebs/3modules/fetchWallpaper.nix
index 852c8f630..dc0133a63 100644
--- a/krebs/3modules/fetchWallpaper.nix
+++ b/krebs/3modules/fetchWallpaper.nix
@@ -55,10 +55,12 @@ let
       name = "fetchWallpaper";
       uid = genid_uint31 "fetchWallpaper";
       description = "fetchWallpaper user";
+      group = "fetchWallpaper";
       home = cfg.stateDir;
       createHome = true;
       isSystemUser = true;
     };
+    users.groups.fetchWallpaper = {};
 
     systemd.timers.fetchWallpaper = {
       description = "fetch wallpaper timer";
diff --git a/krebs/3modules/git.nix b/krebs/3modules/git.nix
index d31d91b7c..0aa1ae0f2 100644
--- a/krebs/3modules/git.nix
+++ b/krebs/3modules/git.nix
@@ -362,10 +362,8 @@ let
     users.users.${cfg.user.name} = {
       inherit (cfg.user) home name uid;
       description = "Git repository hosting user";
-      extraGroups = [
-        # To allow running cgit-clear-cache via hooks.
-        cfg.cgit.fcgiwrap.group.name
-      ];
+      # To allow running cgit-clear-cache via hooks.
+      group = cfg.cgit.fcgiwrap.group.name;
       isSystemUser = true;
       shell = "/bin/sh";
       openssh.authorizedKeys.keys =
diff --git a/krebs/3modules/krebs/default.nix b/krebs/3modules/krebs/default.nix
index c05409fe9..ec499d63d 100644
--- a/krebs/3modules/krebs/default.nix
+++ b/krebs/3modules/krebs/default.nix
@@ -105,6 +105,7 @@ in {
             "go.r"
             "rss.r"
           ];
+          tinc.port = 0;
           tinc.pubkey = ''
             -----BEGIN PUBLIC KEY-----
             MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA9PY6t6P1ytgo8qYL2QDc
@@ -165,6 +166,7 @@ in {
             "build.puyak.r"
             "cgit.puyak.r"
           ];
+          tinc.port = 0;
           tinc.pubkey = ''
             -----BEGIN RSA PUBLIC KEY-----
             MIIBCgKCAQEAwwDvaVKSJmAi1fpbsmjLz1DQVTgqnx56GkHKbz5sHwAfPVQej955
diff --git a/krebs/3modules/lass/default.nix b/krebs/3modules/lass/default.nix
index 3419d806c..e96b4d8be 100644
--- a/krebs/3modules/lass/default.nix
+++ b/krebs/3modules/lass/default.nix
@@ -37,6 +37,7 @@ in {
           default._domainkey  60 IN TXT    "k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDUv3DMndFellqu208feABEzT/PskOfTSdJCOF/HELBR0PHnbBeRoeHEm9XAcOe/Mz2t/ysgZ6JFXeFxCtoM5fG20brUMRzsVRxb9Ur5cEvOYuuRrbChYcKa+fopu8pYrlrqXD3miHISoy6ErukIYCRpXWUJHi1TlNQhLWFYqAaywIDAQAB"
           cache               60 IN A      ${config.krebs.hosts.prism.nets.internet.ip4.addr}
           cgit                60 IN A      ${config.krebs.hosts.prism.nets.internet.ip4.addr}
+          pad                 60 IN A      ${config.krebs.hosts.prism.nets.internet.ip4.addr}
           codi                60 IN A      ${config.krebs.hosts.prism.nets.internet.ip4.addr}
           go                  60 IN A      ${config.krebs.hosts.prism.nets.internet.ip4.addr}
           io                  60 IN NS     ions.lassul.us.
@@ -48,6 +49,7 @@ in {
           jitsi               60 IN A      ${config.krebs.hosts.prism.nets.internet.ip4.addr}
           streaming           60 IN A      ${config.krebs.hosts.prism.nets.internet.ip4.addr}
           mumble              60 IN A      ${config.krebs.hosts.prism.nets.internet.ip4.addr}
+          mail                60 IN A      ${config.krebs.hosts.prism.nets.internet.ip4.addr}
         '';
       };
       nets = rec {
@@ -122,33 +124,6 @@ in {
       ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAsANFdMi825qWQXQbWLYuNZ6/fARt3lnh1KStQHQQMD";
       syncthing.id = "QITFKYQ-VEPIPL2-AZIXHMD-BBT62ML-YHSB35A-BSUIBXS-QYMPFHW-M7XN2QU";
     };
-    uriel = {
-      monitoring = false;
-      cores = 1;
-      nets = {
-        retiolum = {
-          ip4.addr = "10.243.81.176";
-          ip6.addr = r6 "1e1";
-          aliases = [
-            "uriel.r"
-          ];
-          tinc.port = 0;
-          tinc.pubkey = ''
-            -----BEGIN RSA PUBLIC KEY-----
-            MIIBCgKCAQEAzw0pvoEmqeqiZrzSOPH0IT99gr1rrvMZbvabXoU4MAiVgGoGrkmR
-            duJkk8Fj12ftMc+Of1gnwDkFhRcfAKOeH1RSc4CTircWVq99WyecTwEZoaR/goQb
-            MND022kIBoG6NQNxv1Y5I1B/h7hfloMFEPym9oFtOAXoGhBY2vVl4g64NNz+RLME
-            m1RipLXKANAh6LRNPGPQCUYX4TVY2ZJVxM3CM1XdomUAdOYXJmWFyUg9NcIKaacx
-            uRrmuy7J9yFBcihZX5Y7NV361kINrpRmZYxJRf9cr0hb5EkJJ7bMIKQMEFQ5RnYo
-            u7MPGKD7aNHa6hLLCeIfJ5u0igVmSLh3pwIDAQAB
-            -----END RSA PUBLIC KEY-----
-          '';
-        };
-      };
-      ssh.privkey.path = <secrets/ssh.id_ed25519>;
-      ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBryIo/Waw8SWvlQ0+5I+Bd/dJgcMd6iPXtELS6gQXoc";
-      secure = true;
-    };
     mors = {
       cores = 2;
       nets = {
@@ -418,38 +393,6 @@ in {
       ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIE5HyLyaIvVH0qHIQ4ciKhDiElhSqsK+uXcA6lTvL+5n";
       syncthing.id = "EA76ZHP-DF2I3CJ-NNTFEUH-YGPQK5S-T7FQ6JA-BNQQUNC-GF2YL46-CKOZCQM";
     };
-    red = {
-      monitoring = false;
-      cores = 1;
-      nets = {
-        retiolum = {
-          ip4.addr = "10.243.0.13";
-          ip6.addr = r6 "12ed";
-          aliases = [
-            "red.r"
-          ];
-          tinc.port = 0;
-          tinc.pubkey = ''
-            -----BEGIN PUBLIC KEY-----
-            MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEArAN/62V2MV18wsZ9VMTG
-            4/cqsjvHlffAN8jYDq+GImgREvbiLlFhhHgxwKh0gcDTR8P1xX/00P3/fx/g5bRF
-            Te7LZT2AFmVFFFfx1n9NBweN/gG2/hzB9J8epbWLNT+RzpzHuAoREvDZ+jweSXaI
-            phdmQY2s36yrR3TAShqq0q4cwlXuHT00J+InDutM0mTftBQG/fvYkBhHOfq4WSY0
-            FeMK7DTKNbsqQiKKQ/kvWi7KfTW0F0c7SDpi7BLwbQzP2WbogtGy9MIrw9ZhE6Ox
-            TVdAksPKw0TlYdb16X/MkbzBqTYbxFlmWzpMJABMxIVwAfQx3ZGYvJDdDXmQS2qa
-            mDN2xBb/5pj3fbfp4wbwWlRVSd/AJQtRvaNY24F+UsRJb0WinIguDI6oRZx7Xt8w
-            oYirKqqq1leb3EYUt8TMIXQsOw0/Iq+JJCwB+ZyLLGVNB19XOxdR3RN1JYeZANpE
-            cMSS3SdFGgZ//ZAdhIN5kw9yMeKo6Rnt+Vdz3vZWTuSVp/xYO3IMGXNGAdIWIwrJ
-            7fwSl/rfXGG816h0sD46U0mxd+i68YOtHlzOKe+vMZ4/FJZYd/E5/IDQluV8HLwa
-            5lODfZXUmfStdV+GDA9KVEGUP5xSkC3rMnir66NgHzKpIL002/g/HfGu7O3MrvpW
-            ng7AMvRv5vbsYcJBj2HUhKUCAwEAAQ==
-            -----END PUBLIC KEY-----
-          '';
-        };
-      };
-      ssh.privkey.path = <secrets/ssh.id_ed25519>;
-      ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKd/6eCR8yxC14zBJLIQgVa4Zbutv5yr2S8k08ztmBpp";
-    };
     yellow = {
       cores = 1;
       nets = {
@@ -583,44 +526,6 @@ in {
       ci = false;
       syncthing.id = "PWKVXPB-JCNO6E4-KVIQ7CK-6FSOWHM-AWORMDU-HVVYLKW-44DQTYW-XZT7DQJ";
     };
-    morpheus = {
-      cores = 1;
-      nets = {
-        retiolum = {
-          ip4.addr = "10.243.0.19";
-          ip6.addr = r6 "012f";
-          aliases = [
-            "morpheus.r"
-          ];
-          tinc.port = 0;
-          tinc.pubkey = ''
-            -----BEGIN RSA PUBLIC KEY-----
-            MIICCgKCAgEAptrlSKQKsBH2QMQxllZR94S/fXneajpJifRjXR5bi+7ME2ThdQXY
-            T7yWiKaUuBJThWged9PdPltLUEMmv+ubQqpWHZq442VWSS36r1yMSGpUeKK+oYMN
-            /Sfu+1yC4m2uXno95wpJZIcDfbbn26jT6ldJ4Yd97zyrXKljvcdrz3wZzQq0tojh
-            S5Q59x/aQMJbnQpnlFnMIEVgULuFPW16+vPGsXIPdYNggaF1avcBaFl8i3M0EZVz
-            Swn4hArDynDJhR7M0QdlwOpOh7O+1iOnmXqqei3LxMVHb+YtzfHgxOPxggUsy7CR
-            bj9uBR9loGwgmZwaxXd1Vfbw8kn/feOb9FcW73u+SZyzwEA9HFRV0jGQe3P9mGfI
-            Bwe02DOTVXEB8jTAGCw5T3bXLIOX8kqdlCECuAWFfrt8H+GjZDuGUWRcMn32orMz
-            sMvkab95ZOHK6Q31mrhILOIOdyZWKPZIabL3HF6CZtu52h6MDHbmGS0w0OJYhj2+
-            VnT9ZBoaeooVg8QOE43rCXvmL5vzhLKrj4s/53wTGG5SpzLs9Q9rrJVgAnz4YQ7j
-            3Ov5q3Zxyr+vO6O7Pb5X49vCQw/jzK41S0/15GEmKcoxXemzeZCpX1mbeeTUtLvA
-            U7OJwldrElzictBJ1gT94L4BDvoGZVqAkXJCJPamfsWaiw6SsMqtTfECAwEAAQ==
-            -----END RSA PUBLIC KEY-----
-          '';
-        };
-        wiregrill = {
-          ip6.addr = w6 "012f";
-          aliases = [
-            "morpheus.w"
-          ];
-          wireguard.pubkey = "BdiIHJjJQThmZD8DehxPGA+bboBHjljedwaRaV5yyDY=";
-        };
-      };
-      ssh.privkey.path = <secrets/ssh.id_ed25519>;
-      ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHXS60mmNWMdMRvaPxGn91Cm/hm7zY8xn5rkI4n2KG/f ";
-      syncthing.id = "JS4RFIL-MJP2SMJ-EOQXCPQ-MC3NB4V-BQ77GN5-LPKGLWY-GHDP732-G22OJQQ";
-    };
     hilum = {
       cores = 1;
       nets = {
diff --git a/krebs/3modules/solanum.nix b/krebs/3modules/solanum.nix
deleted file mode 100644
index 9094d1003..000000000
--- a/krebs/3modules/solanum.nix
+++ /dev/null
@@ -1,104 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-let
-  inherit (lib) mkEnableOption mkIf mkOption singleton types;
-  inherit (pkgs) coreutils solanum;
-  cfg = config.krebs.solanum;
-
-  configFile = pkgs.writeText "solanum.conf" ''
-    ${cfg.config}
-  '';
-in
-
-{
-
-  ###### interface
-
-  options = {
-
-    krebs.solanum = {
-
-      enable = mkEnableOption "Solanum IRC daemon";
-
-      config = mkOption {
-        type = types.str;
-        description = ''
-          Solanum IRC daemon configuration file.
-        '';
-      };
-
-      statedir = mkOption {
-        type = types.path;
-        default = "/var/lib/solanum";
-        description = ''
-          Location of the state directory of solanum.
-        '';
-      };
-
-      user = mkOption {
-        type = types.str;
-        default = "ircd";
-        description = ''
-          Solanum IRC daemon user.
-        '';
-      };
-
-      group = mkOption {
-        type = types.str;
-        default = "ircd";
-        description = ''
-          Solanum IRC daemon group.
-        '';
-      };
-
-      motd = mkOption {
-        type = types.nullOr types.lines;
-        default = null;
-        description = ''
-          Solanum MOTD text.
-
-          Solanum will read its MOTD from /etc/solanum/ircd.motd .
-          If set, the value of this option will be written to this path.
-        '';
-      };
-
-    };
-
-  };
-
-
-  ###### implementation
-
-  config = mkIf cfg.enable (lib.mkMerge [
-    {
-      users.users.${cfg.user} = {
-        description = "Solanum IRC daemon user";
-        uid = config.ids.uids.ircd;
-        group = cfg.group;
-      };
-
-      users.groups.${cfg.group} = {
-        gid = config.ids.gids.ircd;
-      };
-
-      systemd.tmpfiles.rules = [
-        "d ${cfg.statedir} - ${cfg.user} ${cfg.group} - -"
-      ];
-
-      systemd.services.solanum = {
-        description = "Solanum IRC daemon";
-        wantedBy = [ "multi-user.target" ];
-        serviceConfig = {
-          ExecStart   = "${solanum}/bin/solanum -foreground -logfile /dev/stdout -configfile ${configFile} -pidfile ${cfg.statedir}/ircd.pid";
-          Group = cfg.group;
-          User = cfg.user;
-        };
-      };
-
-    }
-
-    (mkIf (cfg.motd != null) {
-      environment.etc."solanum/ircd.motd".text = cfg.motd;
-    })
-  ]);
-}
diff --git a/krebs/3modules/sync-containers.nix b/krebs/3modules/sync-containers.nix
index fcfaf1dd0..e47f9a3a7 100644
--- a/krebs/3modules/sync-containers.nix
+++ b/krebs/3modules/sync-containers.nix
@@ -94,7 +94,7 @@ in {
     programs.fuse.userAllowOther = true;
     # allow syncthing to enter /var/lib/containers
     system.activationScripts.containers-enter = mkDefault ''
-      ${pkgs.coreutils}/bin/chmod a+x /var/lib/containers
+      ${pkgs.coreutils}/bin/chmod a+x /var/lib/containers || :
     '';
 
     services.syncthing.declarative.folders = (mapAttrs' (_: ctr: nameValuePair "${(paths ctr.name).${ctr.format}}" ({
diff --git a/krebs/3modules/tinc.nix b/krebs/3modules/tinc.nix
index a8a78a43e..2c19aefdb 100644
--- a/krebs/3modules/tinc.nix
+++ b/krebs/3modules/tinc.nix
@@ -237,9 +237,14 @@ let
         inherit (cfg.user) home name uid;
         createHome = true;
         isSystemUser = true;
+        group = netname;
       }
     ) config.krebs.tinc;
 
+    users.groups = mapAttrs' (netname: cfg:
+      nameValuePair netname {}
+    ) config.krebs.tinc;
+
     environment.etc = mapAttrs' (netname: cfg:
       nameValuePair "tinc/${netname}" (mkIf cfg.enableLegacy {
         source = cfg.confDir;
diff --git a/krebs/5pkgs/default.nix b/krebs/5pkgs/default.nix
index c077bf4d7..f9ed6439c 100644
--- a/krebs/5pkgs/default.nix
+++ b/krebs/5pkgs/default.nix
@@ -1,18 +1,23 @@
-with import <stockholm/lib>;
-
+let
+  stockholm.lib = import ../../lib;
+in
+with stockholm.lib;
 self: super:
-
-# Import files and subdirectories like they are overlays.
-foldl' mergeAttrs {}
+fix (foldl' (flip extends) (self: super) (
+  [
+    (self: super: { inherit stockholm; })
+  ]
+  ++
   (map
-    (name: import (./. + "/${name}") self super)
+    (name: import (./. + "/${name}"))
     (filter
       (name: name != "default.nix" && !hasPrefix "." name)
       (attrNames (readDir ./.))))
-
-//
-
-{
-  brockman = self.haskellPackages.brockman;
-  reaktor2 = self.haskellPackages.reaktor2;
-}
+  ++
+  [
+    (self: super: {
+      brockman = self.haskellPackages.brockman;
+      reaktor2 = self.haskellPackages.reaktor2;
+    })
+  ]
+))
diff --git a/krebs/5pkgs/haskell/X11-aeson.nix b/krebs/5pkgs/haskell/X11-aeson.nix
index 7db6c28a8..103d87faa 100644
--- a/krebs/5pkgs/haskell/X11-aeson.nix
+++ b/krebs/5pkgs/haskell/X11-aeson.nix
@@ -1,4 +1,4 @@
-{ mkDerivation, aeson, base, fetchgit, stdenv, X11 }:
+{ mkDerivation, aeson, base, fetchgit, lib, X11 }:
 mkDerivation {
   pname = "X11-aeson";
   version = "1.0.0";
@@ -9,5 +9,5 @@ mkDerivation {