diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..3fb63ec
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1716361217,
+        "narHash": "sha256-mzZDr00WUiUXVm1ujBVv6A0qRd8okaITyUp4ezYRgc4=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "46397778ef1f73414b03ed553a3368f0e7e33c2f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-23.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..5c0c2d6
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,22 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11";
+  };
+
+  outputs = { self, nixpkgs, ... }@inputs: {
+    nixosConfigurations = {
+      tohru = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        modules = [
+          ./hosts/tohru/configuration.nix
+        ];
+      };
+      yevaud = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        modules = [
+          ./hosts/yevaud/configuration.nix
+        ];
+      };
+    };
+  };
+}
diff --git a/hive.nix b/hive.nix
deleted file mode 100644
index 4e4ffb9..0000000
--- a/hive.nix
+++ /dev/null
@@ -1,25 +0,0 @@
-let sources = import ./npins;
-in {
-  meta = {
-    nixpkgs = sources.nixpkgs;
-  };
-
-  defaults = { pkgs, ... }: {
-    imports = [ ./pinning.nix ];
-    deployment.replaceUnknownProfiles = false;
-  };
-
-  tohru = { name, nodes, ... }: {
-    deployment = {
-      allowLocalDeployment = true;
-      targetHost = null;
-    };
-
-    imports = [ ./hosts/tohru/configuration.nix ];
-  };
-
-  yevaud = {
-    deployment.targetHost = "yevaud.birdsong.network";
-    imports = [ ./hosts/yevaud/configuration.nix ];
-  };
-}
diff --git a/hosts/tohru/configuration.nix b/hosts/tohru/configuration.nix
index 2a09eb4..22b1561 100644
--- a/hosts/tohru/configuration.nix
+++ b/hosts/tohru/configuration.nix
@@ -38,20 +38,19 @@
     isNormalUser = true;
     extraGroups = [ "wheel" "networkmanager" ];
     packages = with pkgs; [
-      bitwarden
-      firefox
       tor-browser-bundle-bin
+      firefox
+      tree
     ];
   };
 
   # List packages installed in system profile. To search, run:
   # $ nix search wget
   environment.systemPackages = with pkgs; [
-    colmena
+  #   vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
+    bitwarden
     git
-    npins
     plocate
-    tree
     wget
   ];
 
diff --git a/npins/default.nix b/npins/default.nix
deleted file mode 100644
index 4a7c372..0000000
--- a/npins/default.nix
+++ /dev/null
@@ -1,47 +0,0 @@
-# Generated by npins. Do not modify; will be overwritten regularly
-let
-  data = builtins.fromJSON (builtins.readFile ./sources.json);
-  version = 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 {
-      url = 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/npins/sources.json b/npins/sources.json
deleted file mode 100644
index e3ca425..0000000
--- a/npins/sources.json
+++ /dev/null
@@ -1,23 +0,0 @@
-{
-  "pins": {
-    "home-manager": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "nix-community",
-        "repo": "home-manager"
-      },
-      "branch": "release-23.11",
-      "revision": "2c78a57c544dd19b07442350727ced097e1aa6e6",
-      "url": "https://github.com/nix-community/home-manager/archive/2c78a57c544dd19b07442350727ced097e1aa6e6.tar.gz",
-      "hash": "1zb4qsyn7l1zdiv1kjx07jvgnakpsifc62fxcim50w3ni27cwxk3"
-    },
-    "nixpkgs": {
-      "type": "Channel",
-      "name": "nixos-23.11",
-      "url": "https://releases.nixos.org/nixos/23.11/nixos-23.11.7313.9d29cd266ceb/nixexprs.tar.xz",
-      "hash": "0phfgypnshhlh6ri54yp2f9qabq0hlq06jn46zv692jy6axss4kx"
-    }
-  },
-  "version": 3
-}
\ No newline at end of file
diff --git a/pinning.nix b/pinning.nix
deleted file mode 100644
index dd508f5..0000000
--- a/pinning.nix
+++ /dev/null
@@ -1,23 +0,0 @@
-{ config, pkgs, ... }:
-let sources = import ./npins;
-in {
-  # https://jade.fyi/blog/pinning-nixos-with-npins/
-
-  # We need the flakes experimental feature to do the NIX_PATH thing cleanly
-  # below. Given that this is literally the default config for flake-based
-  # NixOS installations in the upcoming NixOS 24.05, future Nix/Lix releases
-  # will not get away with breaking it.
-  nix.settings.experimental-features = "nix-command flakes";
-
-  # FIXME(24.05 or nixos-unstable): change following two rules to
-  #
-  # nixpkgs.flake.source = sources.nixpkgs;
-  #
-  # which does the exact same thing, using the same machinery as flake configs
-  # do as of 24.05.
-  nix.registry.nixpkgs.to = {
-    type = "path";
-    path = sources.nixpkgs;
-  };
-  nix.nixPath = ["nixpkgs=flake:nixpkgs"];
-}