diff --git a/flake.lock b/flake.lock
index 049dcba..f317a24 100644
--- a/flake.lock
+++ b/flake.lock
@@ -3,19 +3,20 @@
     "biobricks-R": {
       "inputs": {
         "flake-utils": [
+          "dev-shell",
           "flake-utils"
         ],
         "nixpkgs": [
+          "dev-shell",
           "nixpkgs"
-        ],
-        "poetry2nix": "poetry2nix"
+        ]
       },
       "locked": {
-        "lastModified": 1695748200,
-        "narHash": "sha256-mxVCkoeLZBSInR6TgSs3L3BBQCzUx+ZXXt5vbPHFX38=",
+        "lastModified": 1695748726,
+        "narHash": "sha256-+PyXIuejK2ck4HlZzoJQQ/Ucu/7HonEfB4wuhcsBjKU=",
         "owner": "biobricks-ai",
         "repo": "biobricks-R",
-        "rev": "5aedfac7af4edbddb2922129af5ffe366038f8e0",
+        "rev": "c22e6b225d11a4cbd472b70fdc5b6c6f4acf5a53",
         "type": "github"
       },
       "original": {
@@ -24,27 +25,31 @@
         "type": "github"
       }
     },
-    "flake-utils": {
+    "dev-shell": {
       "inputs": {
-        "systems": "systems"
+        "biobricks-R": "biobricks-R",
+        "flake-utils": "flake-utils",
+        "hdt-cpp": "hdt-cpp",
+        "morph-kgc": "morph-kgc",
+        "nixpkgs": "nixpkgs"
       },
       "locked": {
-        "lastModified": 1689068808,
-        "narHash": "sha256-6ixXo3wt24N/melDWjq70UuHQLxGV8jZvooRanIHXw0=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "919d646de7be200f3bf08cb76ae1f09402b6f9b4",
+        "lastModified": 1695998847,
+        "narHash": "sha256-PDjTcvy6XIZZK/pwFNGcA3hNLawFG2RYszLxmH0Gtv4=",
+        "owner": "biobricks-ai",
+        "repo": "dev-shell",
+        "rev": "fee3a34c610dae3919196c25ca03acec9b65d75b",
         "type": "github"
       },
       "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
+        "owner": "biobricks-ai",
+        "repo": "dev-shell",
         "type": "github"
       }
     },
-    "flake-utils_2": {
+    "flake-utils": {
       "inputs": {
-        "systems": "systems_2"
+        "systems": "systems"
       },
       "locked": {
         "narHash": "sha256-zsNZZGTGnMOf9YpHKJqMSsa0dXbfmxeoJ7xHlrt+xmY=",
@@ -61,9 +66,11 @@
     "hdt-cpp": {
       "inputs": {
         "flake-utils": [
+          "dev-shell",
           "flake-utils"
         ],
         "nixpkgs": [
+          "dev-shell",
           "nixpkgs"
         ]
       },
@@ -81,51 +88,39 @@
         "type": "github"
       }
     },
-    "nix-github-actions": {
+    "morph-kgc": {
       "inputs": {
+        "flake-utils": [
+          "dev-shell",
+          "flake-utils"
+        ],
         "nixpkgs": [
-          "biobricks-R",
-          "poetry2nix",
+          "dev-shell",
           "nixpkgs"
-        ]
+        ],
+        "poetry2nix": "poetry2nix"
       },
       "locked": {
-        "lastModified": 1688870561,
-        "narHash": "sha256-4UYkifnPEw1nAzqqPOTL2MvWtm3sNGw1UTYTalkTcGY=",
-        "owner": "nix-community",
-        "repo": "nix-github-actions",
-        "rev": "165b1650b753316aa7f1787f3005a8d2da0f5301",
+        "lastModified": 1695678755,
+        "narHash": "sha256-x8Vw79qjOVtK5FPUe3q0vBUpbuPBPVZ/FEupiMN+6R4=",
+        "owner": "insilica",
+        "repo": "nix-morph-kgc",
+        "rev": "884a9570682288dbd770523f031fa38bdd38e4f9",
         "type": "github"
       },
       "original": {
-        "owner": "nix-community",
-        "repo": "nix-github-actions",
+        "owner": "insilica",
+        "repo": "nix-morph-kgc",
         "type": "github"
       }
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1689192006,
-        "narHash": "sha256-QM0f0d8oPphOTYJebsHioR9+FzJcy1QNIzREyubB91U=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "2de8efefb6ce7f5e4e75bdf57376a96555986841",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs_2": {
-      "locked": {
-        "narHash": "sha256-kXZ1pUoImD9OEbPCwpTz4tHsNTr4CIyIfXb3ocuR8sI=",
-        "rev": "261abe8a44a7e8392598d038d2e01f7b33cf26d0",
-        "revCount": 491123,
+        "narHash": "sha256-4Ne11kNRnQsmSJCRSSNkFRSnHC4Y5gPDBIQGjjPfJiU=",
+        "rev": "5cfafa12d57374f48bcc36fda3274ada276cf69e",
+        "revCount": 491245,
         "type": "tarball",
-        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.2305.491123+rev-261abe8a44a7e8392598d038d2e01f7b33cf26d0/018acd67-263f-7f69-b7a8-1dc50d54a19a/source.tar.gz"
+        "url": "https://api.flakehub.com/f/pinned/NixOS/nixpkgs/0.2305.491245+rev-5cfafa12d57374f48bcc36fda3274ada276cf69e/018adbc4-3796-7d17-a794-61091c15d9d2/source.tar.gz"
       },
       "original": {
         "type": "tarball",
@@ -134,29 +129,34 @@
     },
     "poetry2nix": {
       "inputs": {
-        "flake-utils": "flake-utils",
-        "nix-github-actions": "nix-github-actions",
-        "nixpkgs": "nixpkgs"
+        "flake-utils": [
+          "dev-shell",
+          "morph-kgc",
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "dev-shell",
+          "morph-kgc",
+          "nixpkgs"
+        ]
       },
       "locked": {
-        "lastModified": 1695386222,
-        "narHash": "sha256-5lgnhCCGW0NH5+m5iTED8u6NSSM/dbH9LBPvX0x0XXg=",
+        "lastModified": 1674537260,
+        "narHash": "sha256-DTki81bWzHHRka0ZLayYS5La3t+npRVZvfDH8mx/Las=",
         "owner": "nix-community",
         "repo": "poetry2nix",
-        "rev": "093383b3d7fdd36846a7d84e128ca11865800538",
+        "rev": "a20e27e0555621d35de171270cd041631fc7cb23",
         "type": "github"
       },
       "original": {
-        "id": "poetry2nix",
-        "type": "indirect"
+        "owner": "nix-community",
+        "repo": "poetry2nix",
+        "type": "github"
       }
     },
     "root": {
       "inputs": {
-        "biobricks-R": "biobricks-R",
-        "flake-utils": "flake-utils_2",
-        "hdt-cpp": "hdt-cpp",
-        "nixpkgs": "nixpkgs_2"
+        "dev-shell": "dev-shell"
       }
     },
     "systems": {
@@ -173,21 +173,6 @@
         "repo": "default",
         "type": "github"
       }
-    },
-    "systems_2": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index ece468e..0f4fe60 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,46 +1,7 @@
 {
   description = "Tox21 biobrick";
 
-  inputs = {
-    nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/*.tar.gz";
-    flake-utils.url = "https://flakehub.com/f/numtide/flake-utils/*.tar.gz";
-    biobricks-R = {
-      url = "github:biobricks-ai/biobricks-R";
-      inputs.flake-utils.follows = "flake-utils";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
-    hdt-cpp = {
-      url = "github:insilica/nix-hdt";
-      inputs.flake-utils.follows = "flake-utils";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
-  };
+  inputs = { dev-shell.url = "github:biobricks-ai/dev-shell"; };
 
-  outputs = { self, nixpkgs, flake-utils, biobricks-R, hdt-cpp }:
-    flake-utils.lib.eachDefaultSystem (system:
-      with import nixpkgs { inherit system; };
-      let
-        # tmducken requires duckdb 0.8.1 or later, and nixos-23.05 only had 0.7
-        duckdb-version = "0.8.1";
-        duckdb = (pkgs.duckdb.overrideAttrs (oldAttrs: rec {
-          version = duckdb-version;
-          src = fetchFromGitHub {
-            owner = "duckdb";
-            repo = "duckdb";
-            rev = "v${duckdb-version}";
-            sha256 = "sha256-LEv9yURkYvONObTbIA4CS+umwCRMH8gRQaDtzbCzID4=";
-          };
-        }));
-      in {
-        devShells.default = mkShell {
-          buildInputs = [
-            biobricks-R.packages.${system}.rEnv
-            clojure
-            hdt-cpp.packages.${system}.default
-            duckdb
-            jdk
-          ];
-          env = { DUCKDB_HOME = "${duckdb}/lib"; };
-        };
-      });
+  outputs = { self, dev-shell }: { devShells = dev-shell.devShells; };
 }