Bump pnpm version.

Author: jsonnull

package.json

@@ -17,7 +17,7 @@
     "docs:preview": "corepack pnpm --filter www preview",
     "docs:publish": "corepack pnpm --filter www publish-pages"
   },
-  "packageManager": "pnpm@9.0.6",
+  "packageManager": "pnpm@9.15.0",
   "devDependencies": {
     "@changesets/changelog-github": "^0.5.0",
     "@changesets/cli": "^2.27.1",

shell.nix

@@ -1,14 +1,27 @@
-{ pkgs ? import (fetchTarball "https://github.com/NixOS/nixpkgs/archive/8e65989a9972ce1da033f445d2598683590dfb8a.tar.gz") {} }:
+{ pkgs ? import (fetchTarball
+  "https://github.com/NixOS/nixpkgs/archive/8e65989a9972ce1da033f445d2598683590dfb8a.tar.gz")
+  { } }:
 
-pkgs.mkShell {
+let
+  nodejs = pkgs.nodejs_20;
+  electron = pkgs.electron_30;
+  pnpm = pkgs.nodePackages.pnpm.overrideAttrs (oldAttrs: rec {
+      version = "9.15.0";
+      src = pkgs.fetchurl {
+        url = "https://registry.npmjs.org/pnpm/-/pnpm-${version}.tgz";
+      sha512 = 
+          "sha512-duI3l2CkMo7EQVgVvNZije5yevN3mqpMkU45RBVsQpmSGon5djge4QfUHxLPpLZmgcqccY8GaPoIMe1MbYulbA==";
+      };
+  });
+in pkgs.mkShell {
   buildInputs = [
+    nodejs
+    electron
     pkgs.git
-    pkgs.nodejs_20
-    pkgs.nodePackages.pnpm
     pkgs.xvfb-run
-    pkgs.electron_30
+    pnpm
   ];
 
-  PLAYWRIGHT_ELECTRON_PATH="${pkgs.electron_30}/bin/electron";
-  PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD=1;
+  PLAYWRIGHT_ELECTRON_PATH = "${electron}/bin/electron";
+  PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD = 1;
 }