diff --git a/.github/workflows/release-pdf.yml b/.github/workflows/release-pdf.yml
index 98325ce..494576e 100644
--- a/.github/workflows/release-pdf.yml
+++ b/.github/workflows/release-pdf.yml
@@ -21,7 +21,7 @@ jobs:
       run: nix-instantiate --eval -E '(import <nixpkgs> {}).lib.version'
     - name: Run a command with nix develop
       run: |
-        nix develop --ignore-environment --command bash -c '
+        nix develop .#export-pdf --ignore-environment --command bash -c '
           pnpm install
           pnpm export-pdf
         '
diff --git a/flake.nix b/flake.nix
index 5b6c959..b29247b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -6,27 +6,33 @@
     flake-utils.url = "github:numtide/flake-utils";
   };
 
-  outputs =
-    { self
-    , nixpkgs
-    , flake-utils
-    }:
-
-    flake-utils.lib.eachDefaultSystem (system:
-    let
+  outputs = {
+    self,
+    nixpkgs,
+    flake-utils,
+  }:
+    flake-utils.lib.eachDefaultSystem (system: let
       overlays = [
         (self: super: rec {
           nodejs = super.nodejs_20;
           pnpm = super.nodePackages.pnpm;
-          yarn = (super.yarn.override { inherit nodejs; });
+          yarn = super.yarn.override {inherit nodejs;};
         })
       ];
-      pkgs = import nixpkgs { inherit overlays system; };
-      pkgs_chromium = import nixpkgs { inherit system; };
-    in
-    {
+      pkgs = import nixpkgs {inherit overlays system;};
+      pkgs_chromium = import nixpkgs {inherit system;};
+      packages = with pkgs; [node2nix nodejs pnpm yarn git];
+    in {
       devShells.default = pkgs.mkShell {
-        packages = with pkgs; [ node2nix nodejs pnpm yarn git];
+        inherit packages;
+
+        shellHook = ''
+          echo "node `${pkgs.nodejs}/bin/node --version`"
+        '';
+      };
+
+      devShells.export-pdf = pkgs.mkShell {
+        inherit packages;
 
         shellHook = ''
           echo "node `${pkgs.nodejs}/bin/node --version`"