From 25f7b297dbae34d38ebc0c989d0e550498a60c8a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gutyina=20Gerg=C5=91?= <gutyina.gergo.2@gmail.com>
Date: Wed, 9 Jul 2025 18:37:08 +0200
Subject: [PATCH] pnpm.fetchDeps: enforce setting `fetcherVersion`

---
 pkgs/development/tools/pnpm/fetch-deps/default.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/tools/pnpm/fetch-deps/default.nix b/pkgs/development/tools/pnpm/fetch-deps/default.nix
index 7403548e8792..3d784c5eab9e 100644
--- a/pkgs/development/tools/pnpm/fetch-deps/default.nix
+++ b/pkgs/development/tools/pnpm/fetch-deps/default.nix
@@ -22,7 +22,7 @@ in
       pnpmWorkspaces ? [ ],
       prePnpmInstall ? "",
       pnpmInstallFlags ? [ ],
-      fetcherVersion ? 1,
+      fetcherVersion ? null,
       ...
     }@args:
     let
@@ -46,6 +46,10 @@ in
       "pnpm.fetchDeps: `pnpmWorkspace` is no longer supported, please migrate to `pnpmWorkspaces`."
     ) true;
 
+    assert (lib.throwIf (fetcherVersion == null)
+      "pnpm.fetchDeps: `fetcherVersion` is not set, see https://nixos.org/manual/nixpkgs/stable/#javascript-pnpm-fetcherVersion."
+    ) true;
+
     stdenvNoCC.mkDerivation (
       finalAttrs:
       (