diff --git a/default.nix b/default.nix
index 545acca..6e3c55b 100644
--- a/default.nix
+++ b/default.nix
@@ -1,5 +1,5 @@
 let
-  inputs = import ./deps;
+  inputs = import ./lon.nix;
   patches = import inputs.nix-patches { patchFile = ./patches; };
   inputs_final = inputs // {
     nixpkgs_patched = patches.mkNixpkgsSrc {
diff --git a/deps/default.nix b/deps/default.nix
deleted file mode 100644
index 43cead3..0000000
--- a/deps/default.nix
+++ /dev/null
@@ -1,65 +0,0 @@
-# Generated by npins. Do not modify; will be overwritten regularly
-let
-  data = builtins.fromJSON (builtins.readFile ./sources.json);
-  inherit (data) version;
-
-  mkSource =
-    spec:
-    assert spec ? type;
-    let
-      path =
-        if spec.type == "Git" then
-          mkGitSource spec
-        else if spec.type == "GitRelease" then
-          mkGitSource spec
-        else if spec.type == "PyPi" then
-          mkPyPiSource spec
-        else if spec.type == "Channel" then
-          mkChannelSource spec
-        else
-          builtins.throw "Unknown source type ${spec.type}";
-    in
-    spec // { outPath = path; };
-
-  mkGitSource =
-    {
-      repository,
-      revision,
-      url ? null,
-      hash,
-      ...
-    }:
-    assert repository ? type;
-    # At the moment, either it is a plain git repository (which has an url), or it is a GitHub/GitLab repository
-    # In the latter case, there we will always be an url to the tarball
-    if url != null then
-      (builtins.fetchTarball {
-        inherit url;
-        sha256 = hash; # FIXME: check nix version & use SRI hashes
-      })
-    else
-      assert repository.type == "Git";
-      builtins.fetchGit {
-        inherit (repository) url;
-        rev = revision;
-        # hash = hash;
-      };
-
-  mkPyPiSource =
-    { url, hash, ... }:
-    builtins.fetchurl {
-      inherit url;
-      sha256 = hash;
-    };
-
-  mkChannelSource =
-    { url, hash, ... }:
-    builtins.fetchTarball {
-      inherit url;
-      sha256 = hash;
-    };
-in
-if version == 3 then
-  builtins.mapAttrs (_: mkSource) data.pins
-else
-  throw "Unsupported format version ${toString version} in sources.json. Try running `npins upgrade`"
diff --git a/deps/sources.json b/deps/sources.json
deleted file mode 100644
index 67cd52e..0000000
--- a/deps/sources.json
+++ /dev/null
@@ -1,247 +0,0 @@
-{
-  "pins": {
-    "agenix": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "ryantm",
-        "repo": "agenix"
-      },
-      "branch": "main",
-      "revision": "f6291c5935fdc4e0bef208cfc0dcab7e3f7a1c41",
-      "url": "https://github.com/ryantm/agenix/archive/f6291c5935fdc4e0bef208cfc0dcab7e3f7a1c41.tar.gz",
-      "hash": "1x8nd8hvsq6mvzig122vprwigsr3z2skanig65haqswn7z7amsvg"
-    },
-    "arkheon": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "raitobezarius",
-        "repo": "arkheon"
-      },
-      "branch": "main",
-      "revision": "113724a1a206905e68319676f73d095fcc043a42",
-      "url": "https://github.com/raitobezarius/arkheon/archive/113724a1a206905e68319676f73d095fcc043a42.tar.gz",
-      "hash": "0yh8g020d7z67iqpg7xywk4dxxa64dxa1igd45nb8w653c82w6gq"
-    },
-    "buildbot-nix": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "JulienMalka",
-        "repo": "buildbot-nix"
-      },
-      "branch": "main",
-      "revision": "699160c3e095d349cf26a4957e07d9cb99a379f2",
-      "url": "https://github.com/JulienMalka/buildbot-nix/archive/699160c3e095d349cf26a4957e07d9cb99a379f2.tar.gz",
-      "hash": "1vk7yc38k9sqqpjy0nrldc3zz57irz52r5b8q3z3m0idyx02nd03"
-    },
-    "colmena": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "zhaofengli",
-        "repo": "colmena"
-      },
-      "branch": "main",
-      "revision": "cd65ef7a25cdc75052fbd04b120aeb066c3881db",
-      "url": "https://github.com/zhaofengli/colmena/archive/cd65ef7a25cdc75052fbd04b120aeb066c3881db.tar.gz",
-      "hash": "0n1j499702iclz4hdb4ywvmn8rl4d1mbdf43dwm7lvpjq5pjjqc1"
-    },
-    "disko": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "nix-community",
-        "repo": "disko"
-      },
-      "branch": "master",
-      "revision": "96073e6423623d4a8027e9739d2af86d6422ea7a",
-      "url": "https://github.com/nix-community/disko/archive/96073e6423623d4a8027e9739d2af86d6422ea7a.tar.gz",
-      "hash": "09vfy5adfjkbm6a82nnlkmb3jrz4d8ycyh53plch2yp034q96s3b"
-    },
-    "dns": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "JulienMalka",
-        "repo": "dns.nix"
-      },
-      "branch": "master",
-      "revision": "922d6a72ae1f4436cc8f8e04080c50aa65e0d749",
-      "url": "https://github.com/JulienMalka/dns.nix/archive/922d6a72ae1f4436cc8f8e04080c50aa65e0d749.tar.gz",
-      "hash": "14882hr596maid5kp4rlrx330pi17x4d1k10cr28nj9c9vazcr9b"
-    },
-    "git-hooks": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "cachix",
-        "repo": "git-hooks.nix"
-      },
-      "branch": "master",
-      "revision": "4509ca64f1084e73bc7a721b20c669a8d4c5ebe6",
-      "url": "https://github.com/cachix/git-hooks.nix/archive/4509ca64f1084e73bc7a721b20c669a8d4c5ebe6.tar.gz",
-      "hash": "06cjchycvj4wjzwm8ly1d36s9d7lj3mz1zqnkikvck0chi1psaa3"
-    },
-    "home-manager": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "nix-community",
-        "repo": "home-manager"
-      },
-      "branch": "release-24.05",
-      "revision": "e1391fb22e18a36f57e6999c7a9f966dc80ac073",
-      "url": "https://github.com/nix-community/home-manager/archive/e1391fb22e18a36f57e6999c7a9f966dc80ac073.tar.gz",
-      "hash": "0c83di08nhkzq0cwc3v7aax3x8y5m7qahyzxppinzwxi3r8fnjq3"
-    },
-    "home-manager-unstable": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "nix-community",
-        "repo": "home-manager"
-      },
-      "branch": "master",
-      "revision": "471e3eb0a114265bcd62d11d58ba8d3421ee68eb",
-      "url": "https://github.com/nix-community/home-manager/archive/471e3eb0a114265bcd62d11d58ba8d3421ee68eb.tar.gz",
-      "hash": "1smfj6fb3jc80gbavdf603nz782fb96d9k5w36g61zliw5g2qfvz"
-    },
-    "homepage": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "JulienMalka",
-        "repo": "homepage"
-      },
-      "branch": "main",
-      "revision": "29e779d8600b1c1e6235570a3614a54f8ec8126e",
-      "url": "https://github.com/JulienMalka/homepage/archive/29e779d8600b1c1e6235570a3614a54f8ec8126e.tar.gz",
-      "hash": "0prma1rg6glf3xy1dkd6gbzb26z1sxkgzd8wr623pbqvf44hgv32"
-    },
-    "impermanence": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "nix-community",
-        "repo": "impermanence"
-      },
-      "branch": "master",
-      "revision": "c7f5b394397398c023000cf843986ee2571a1fd7",
-      "url": "https://github.com/nix-community/impermanence/archive/c7f5b394397398c023000cf843986ee2571a1fd7.tar.gz",
-      "hash": "0znd8asz61l1dm5qnjcqcznjr138ywwwkpqyla571s9z0s3jybvv"
-    },
-    "lanzaboote": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "nix-community",
-        "repo": "lanzaboote"
-      },
-      "branch": "master",
-      "revision": "f5a3a7dff44d131807fc1a89fbd8576cd870334a",
-      "url": "https://github.com/nix-community/lanzaboote/archive/f5a3a7dff44d131807fc1a89fbd8576cd870334a.tar.gz",
-      "hash": "0p4h624kbcxyqq1wkrfycyshdyfrg8dsdbv0y66lwiw48n5x5xvv"
-    },
-    "lila": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "JulienMalka",
-        "repo": "lila"
-      },
-      "branch": "main",
-      "revision": "9c52498d310c8ecca8de63e50658bd5089617e3a",
-      "url": "https://github.com/JulienMalka/lila/archive/9c52498d310c8ecca8de63e50658bd5089617e3a.tar.gz",
-      "hash": "08zwv0b7x0yvbcwkr39pmhlyfr86y6ijsm71az8xx323zp4c5r8q"
-    },
-    "nix-index-database": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "mic92",
-        "repo": "nix-index-database"
-      },
-      "branch": "main",
-      "revision": "32058e9138248874773630c846563b1a78ee7a5b",
-      "url": "https://github.com/mic92/nix-index-database/archive/32058e9138248874773630c846563b1a78ee7a5b.tar.gz",
-      "hash": "12ksfmngc7cs2jbdg2a8l8ilymq4qmw2icgm2p6z5pi0f2mhgw2r"
-    },
-    "nix-patches": {
-      "type": "GitRelease",
-      "repository": {
-        "type": "Git",
-        "url": "https://git.hubrecht.ovh/hubrecht/nix-patches.git"
-      },
-      "pre_releases": false,
-      "version_upper_bound": null,
-      "release_prefix": null,
-      "version": "v0.5.0",
-      "revision": "e11ba20945f4a867f09d84343c37328288f274b4",
-      "url": null,
-      "hash": "1c6cc44pwlg3ky6cnwhkml8ci77fw3sgjhwvqg0f6igxxf2fqv9v"
-    },
-    "nixos-anywhere": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "nix-community",
-        "repo": "nixos-anywhere"
-      },
-      "branch": "main",
-      "revision": "2991be5b522c88244b8833dd662cac406e3d5d28",
-      "url": "https://github.com/nix-community/nixos-anywhere/archive/2991be5b522c88244b8833dd662cac406e3d5d28.tar.gz",
-      "hash": "1bqag1rd6ais5wshpnx4k05lyph21m9hgfm7wf50br5jprn9p0nx"
-    },
-    "nixos-mailserver": {
-      "type": "Git",
-      "repository": {
-        "type": "GitLab",
-        "repo_path": "simple-nixos-mailserver/nixos-mailserver",
-        "server": "https://gitlab.com/"
-      },
-      "branch": "nixos-24.05",
-      "revision": "29916981e7b3b5782dc5085ad18490113f8ff63b",
-      "url": "https://gitlab.com/api/v4/projects/simple-nixos-mailserver%2Fnixos-mailserver/repository/archive.tar.gz?sha=29916981e7b3b5782dc5085ad18490113f8ff63b",
-      "hash": "0clvw4622mqzk1aqw1qn6shl9pai097q62mq1ibzscnjayhp278b"
-    },
-    "nixpkgs": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "nixos",
-        "repo": "nixpkgs"
-      },
-      "branch": "nixos-24.05",
-      "revision": "6e99f2a27d600612004fbd2c3282d614bfee6421",
-      "url": "https://github.com/nixos/nixpkgs/archive/6e99f2a27d600612004fbd2c3282d614bfee6421.tar.gz",
-      "hash": "1qwbrn2cb1x9clkhqmdnx5r8v11168p3nx14h3r9wcml0bgblpvr"
-    },
-    "unstable": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "nixos",
-        "repo": "nixpkgs"
-      },
-      "branch": "nixos-unstable",
-      "revision": "12228ff1752d7b7624a54e9c1af4b222b3c1073b",
-      "url": "https://github.com/nixos/nixpkgs/archive/12228ff1752d7b7624a54e9c1af4b222b3c1073b.tar.gz",
-      "hash": "1dmng7f5rv4hgd0b61chqx589ra7jajsrzw21n8gp8makw5khvb2"
-    },
-    "zotero-nix": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "camillemndn",
-        "repo": "zotero-nix"
-      },
-      "branch": "main",
-      "revision": "36c832d9b699378fbabcfcc36844c968db6dbec9",
-      "url": "https://github.com/camillemndn/zotero-nix/archive/36c832d9b699378fbabcfcc36844c968db6dbec9.tar.gz",
-      "hash": "0ff49dj30wadw32g2issd1688n7z29p6ykcvwpk723nlz2a1yw9n"
-    }
-  },
-  "version": 3
-}
\ No newline at end of file
diff --git a/lib/mkmachine.nix b/lib/mkmachine.nix
index 1d90c5b..0ee2762 100644
--- a/lib/mkmachine.nix
+++ b/lib/mkmachine.nix
@@ -30,7 +30,6 @@ import "${nixpkgs}/nixos/lib/eval-config.nix" {
   modules = modules ++ [
     host-config
     (import "${home-manager}/nixos")
-    (import "${inputs.nixos-mailserver}")
     (import "${inputs.disko}/module.nix")
     (import "${inputs.buildbot-nix}/nix/master.nix")
     (import "${inputs.buildbot-nix}/nix/worker.nix")
diff --git a/lon.lock b/lon.lock
new file mode 100644
index 0000000..853cc2f
--- /dev/null
+++ b/lon.lock
@@ -0,0 +1,204 @@
+{
+  "version": "1",
+  "sources": {
+    "agenix": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "ryantm",
+      "repo": "agenix",
+      "branch": "main",
+      "revision": "f6291c5935fdc4e0bef208cfc0dcab7e3f7a1c41",
+      "url": "https://github.com/ryantm/agenix/archive/f6291c5935fdc4e0bef208cfc0dcab7e3f7a1c41.tar.gz",
+      "hash": "sha256-b+uqzj+Wa6xgMS9aNbX4I+sXeb5biPDi39VgvSFqFvU="
+    },
+    "arkheon": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "raitobezarius",
+      "repo": "arkheon",
+      "branch": "main",
+      "revision": "113724a1a206905e68319676f73d095fcc043a42",
+      "url": "https://github.com/raitobezarius/arkheon/archive/113724a1a206905e68319676f73d095fcc043a42.tar.gz",
+      "hash": "sha256-+BkuEBvFcLRsIe3FoHojRvXeyOS+n3dxPOafBgR4CHo="
+    },
+    "buildbot-nix": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "JulienMalka",
+      "repo": "buildbot-nix",
+      "branch": "main",
+      "revision": "699160c3e095d349cf26a4957e07d9cb99a379f2",
+      "url": "https://github.com/JulienMalka/buildbot-nix/archive/699160c3e095d349cf26a4957e07d9cb99a379f2.tar.gz",
+      "hash": "sha256-AzQrQPctgjr+wGiVLMrP8ZT/B2s0W+DlxViniQbzZ+4="
+    },
+    "colmena": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "zhaofengli",
+      "repo": "colmena",
+      "branch": "main",
+      "revision": "cd65ef7a25cdc75052fbd04b120aeb066c3881db",
+      "url": "https://github.com/zhaofengli/colmena/archive/cd65ef7a25cdc75052fbd04b120aeb066c3881db.tar.gz",
+      "hash": "sha256-gWEpb8Hybnoqb4O4tmpohGZk6+aerAbJpywKcFIiMlg="
+    },
+    "disko": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "nix-community",
+      "repo": "disko",
+      "branch": "master",
+      "revision": "e55f9a8678adc02024a4877c2a403e3f6daf24fe",
+      "url": "https://github.com/nix-community/disko/archive/e55f9a8678adc02024a4877c2a403e3f6daf24fe.tar.gz",
+      "hash": "sha256-tqoAO8oT6zEUDXte98cvA1saU9+1dLJQe3pMKLXv8ps="
+    },
+    "dns": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "JulienMalka",
+      "repo": "dns.nix",
+      "branch": "master",
+      "revision": "922d6a72ae1f4436cc8f8e04080c50aa65e0d749",
+      "url": "https://github.com/JulienMalka/dns.nix/archive/922d6a72ae1f4436cc8f8e04080c50aa65e0d749.tar.gz",
+      "hash": "sha256-K2X21U4sSYtEZiDM0Eg/IV4wRs80kztLi6qaVDIUCJE="
+    },
+    "git-hooks": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "cachix",
+      "repo": "git-hooks.nix",
+      "branch": "master",
+      "revision": "7570de7b9b504cfe92025dd1be797bf546f66528",
+      "url": "https://github.com/cachix/git-hooks.nix/archive/7570de7b9b504cfe92025dd1be797bf546f66528.tar.gz",
+      "hash": "sha256-tyMUA6NgJSvvQuzB7A1Sf8+0XCHyfSPRx/b00o6K0uo="
+    },
+    "home-manager": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "nix-community",
+      "repo": "home-manager",
+      "branch": "release-24.05",
+      "revision": "208df2e558b73b6a1f0faec98493cb59a25f62ba",
+      "url": "https://github.com/nix-community/home-manager/archive/208df2e558b73b6a1f0faec98493cb59a25f62ba.tar.gz",
+      "hash": "sha256-tDgM4d8mLK0Hd6YMB2w1BqMto1XBXADOzPEaLl10VI4="
+    },
+    "home-manager-unstable": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "nix-community",
+      "repo": "home-manager",
+      "branch": "master",
+      "revision": "e5fa72bad0c6f533e8d558182529ee2acc9454fe",
+      "url": "https://github.com/nix-community/home-manager/archive/e5fa72bad0c6f533e8d558182529ee2acc9454fe.tar.gz",
+      "hash": "sha256-4QOPemDQ9VRLQaAdWuvdDBhh+lEUOAnSMHhdr4nS1mk="
+    },
+    "homepage": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "JulienMalka",
+      "repo": "homepage",
+      "branch": "main",
+      "revision": "29e779d8600b1c1e6235570a3614a54f8ec8126e",
+      "url": "https://github.com/JulienMalka/homepage/archive/29e779d8600b1c1e6235570a3614a54f8ec8126e.tar.gz",
+      "hash": "sha256-YuwHCXEbrzuEyRy1/2bX4Rux/nqmzRZ8H44+83JQNV8="
+    },
+    "impermanence": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "nix-community",
+      "repo": "impermanence",
+      "branch": "master",
+      "revision": "63f4d0443e32b0dd7189001ee1894066765d18a5",
+      "url": "https://github.com/nix-community/impermanence/archive/63f4d0443e32b0dd7189001ee1894066765d18a5.tar.gz",
+      "hash": "sha256-4qWg9sNh5g1qPGO6d/GV2ktY+eDikkBTbWSg5/iD2nY="
+    },
+    "lanzaboote": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "nix-community",
+      "repo": "lanzaboote",
+      "branch": "master",
+      "revision": "e7bd94e0b5ff3c1e686f2101004ebf4fcea9d871",
+      "url": "https://github.com/nix-community/lanzaboote/archive/e7bd94e0b5ff3c1e686f2101004ebf4fcea9d871.tar.gz",
+      "hash": "sha256-qS1H/5/20ewJIXmf8FN2A5KTOKKU9elWvCPwdBi1P/U="
+    },
+    "lila": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "JulienMalka",
+      "repo": "lila",
+      "branch": "main",
+      "revision": "9c52498d310c8ecca8de63e50658bd5089617e3a",
+      "url": "https://github.com/JulienMalka/lila/archive/9c52498d310c8ecca8de63e50658bd5089617e3a.tar.gz",
+      "hash": "sha256-GOXCyP1DjN7RV+FULaPxBmXnKaw3jTw5W9uDfhbY/CM="
+    },
+    "lon": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "nikstur",
+      "repo": "lon",
+      "branch": "main",
+      "revision": "a8b4406e5151af87b989564d4aa98ecd6d4d3500",
+      "url": "https://github.com/nikstur/lon/archive/a8b4406e5151af87b989564d4aa98ecd6d4d3500.tar.gz",
+      "hash": "sha256-VGvK0ahBl440NMs03WqmP7T4a1DP13yfX47YI84rlGU="
+    },
+    "nix-index-database": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "mic92",
+      "repo": "nix-index-database",
+      "branch": "main",
+      "revision": "642275444c5a9defce57219c944b3179bf2adaa9",
+      "url": "https://github.com/mic92/nix-index-database/archive/642275444c5a9defce57219c944b3179bf2adaa9.tar.gz",
+      "hash": "sha256-hwX53i24KyWzp2nWpQsn8lfGQNCP0JoW/bvQmcR1DPY="
+    },
+    "nix-patches": {
+      "type": "Git",
+      "fetchType": "git",
+      "branch": "main",
+      "revision": "e11ba20945f4a867f09d84343c37328288f274b4",
+      "url": "https://git.hubrecht.ovh/hubrecht/nix-patches.git",
+      "hash": "sha256-O23shOv9RePAw5tD+fTg7pzIEK0TcsuMn+NRfglhzLA=",
+      "submodules": false
+    },
+    "nixos-anywhere": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "nix-community",
+      "repo": "nixos-anywhere",
+      "branch": "main",
+      "revision": "55b239c13648898a43cf4da248f988185c322ced",
+      "url": "https://github.com/nix-community/nixos-anywhere/archive/55b239c13648898a43cf4da248f988185c322ced.tar.gz",
+      "hash": "sha256-Vk9g2rfhWVOM3//aWbYBb5UeipuJXCD4rbeyle84UVA="
+    },
+    "nixpkgs": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "nixos",
+      "repo": "nixpkgs",
+      "branch": "nixos-24.05",
+      "revision": "f4c846aee8e1e29062aa8514d5e0ab270f4ec2f9",
+      "url": "https://github.com/nixos/nixpkgs/archive/f4c846aee8e1e29062aa8514d5e0ab270f4ec2f9.tar.gz",
+      "hash": "sha256-L64N1rpLlXdc94H+F6scnrbuEu+utC03cDDVvvJGOME="
+    },
+    "unstable": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "nixos",
+      "repo": "nixpkgs",
+      "branch": "nixos-unstable",
+      "revision": "574d1eac1c200690e27b8eb4e24887f8df7ac27c",
+      "url": "https://github.com/nixos/nixpkgs/archive/574d1eac1c200690e27b8eb4e24887f8df7ac27c.tar.gz",
+      "hash": "sha256-v3rIhsJBOMLR8e/RNWxr828tB+WywYIoajrZKFM+0Gg="
+    },
+    "zotero-nix": {
+      "type": "GitHub",
+      "fetchType": "tarball",
+      "owner": "camillemndn",
+      "repo": "zotero-nix",
+      "branch": "main",
+      "revision": "36c832d9b699378fbabcfcc36844c968db6dbec9",
+      "url": "https://github.com/camillemndn/zotero-nix/archive/36c832d9b699378fbabcfcc36844c968db6dbec9.tar.gz",
+      "hash": "sha256-NnEflPjUDnHm5ZtNb24S/1iETGhaR/HE4E1xMGRLxDk="
+    }
+  }
+}
diff --git a/lon.nix b/lon.nix
new file mode 100644
index 0000000..245e3a9
--- /dev/null
+++ b/lon.nix
@@ -0,0 +1,41 @@
+# Generated by lon. Do not modify!
+let
+
+  lock = builtins.fromJSON (builtins.readFile ./lon.lock);
+
+  # Override with a path defined in an environment variable. If no variable is
+  # set, the original path is used.
+  overrideFromEnv =
+    name: path:
+    let
+      replacement = builtins.getEnv "LON_OVERRIDE_${name}";
+    in
+    if replacement == "" then
+      path
+    else
+    # this turns the string into an actual Nix path (for both absolute and
+    # relative paths)
+    if builtins.substring 0 1 replacement == "/" then
+      /. + replacement
+    else
+      /. + builtins.getEnv "PWD" + "/${replacement}";
+
+  fetchSource =
+    args@{ fetchType, ... }:
+    if fetchType == "git" then
+      builtins.fetchGit {
+        inherit (args) url;
+        ref = args.branch;
+        rev = args.revision;
+        narHash = args.hash;
+      }
+    else if fetchType == "tarball" then
+      builtins.fetchTarball {
+        inherit (args) url;
+        sha256 = args.hash;
+      }
+    else
+      builtins.throw "Unsupported source type ${fetchType}";
+
+in
+builtins.mapAttrs (name: args: overrideFromEnv name (fetchSource args)) lock.sources
diff --git a/shell.nix b/shell.nix
index 37d146b..5fcd35a 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,10 +1,11 @@
 let
-  inputs = import ./deps;
+  inputs = import ./lon.nix;
   pkgs = import inputs.unstable { };
   nixos-anywhere = pkgs.callPackage "${inputs.nixos-anywhere}/src/default.nix" { };
   agenix = pkgs.callPackage "${inputs.agenix}/pkgs/agenix.nix" { };
   bootstrap = pkgs.callPackage scripts/bootstrap-machine.nix { inherit nixos-anywhere; };
   update-deps = pkgs.callPackage scripts/update-deps.nix { };
+  lon = pkgs.callPackage "${inputs.lon}/nix/packages/lon.nix" { };
   pre-commit-hook =
     (import (
       pkgs.applyPatches {
@@ -36,6 +37,7 @@ pkgs.mkShell {
     bootstrap
     update-deps
     pkgs.statix
+    lon
   ];
   shellHook = ''
     ${pre-commit-hook.shellHook}