From a2e04a919c75aafac26d47dc3eeeaeac1fe4218f Mon Sep 17 00:00:00 2001
From: Vincent Bernat <vincent@bernat.ch>
Date: Thu, 18 Sep 2025 08:46:17 +0200
Subject: [PATCH] build: fix computation of Nix hash for pnpm deps

We have to put a fake hash as pnpmDeps does not fail on change when the
hash is known.
---
 flake.nix           | 6 ++++--
 nix/npmDepsHash.txt | 2 +-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/flake.nix b/flake.nix
index 34c3c105..67f0243d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -97,9 +97,11 @@
               [[ -z "$sha256" ]] || echo $sha256 > nix/vendorHash.txt
             '';
             update-npmDepsHash = ''
-              sha256=$(2>&1 nix build --no-link .#frontend.npmDeps \
+              oldSha256=$(cat nix/npmDepsHash.txt)
+              echo sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA= > nix/npmDepsHash.txt
+              sha256=$(2>&1 nix build --no-link .#frontend.pnpmDeps \
                           | ${pkgs.gnused}/bin/sed -nE "s/\s+got:\s+(sha256-.*)/\1/p")
-              [[ -z "$sha256" ]] || echo $sha256 > nix/npmDepsHash.txt
+              [[ -z "$sha256" ]] && echo $oldSha256 || echo $sha256 > nix/npmDepsHash.txt
             '';
             update-ianaServiceNamesHash = ''
               sha256=$(2>&1 nix build --no-link .#ianaServiceNames \
diff --git a/nix/npmDepsHash.txt b/nix/npmDepsHash.txt
index b869f322..e47b0fb2 100644
--- a/nix/npmDepsHash.txt
+++ b/nix/npmDepsHash.txt
@@ -1 +1 @@
-sha256-4h48BXKE5yY7ZLkW2xYzybuSi6OZDVH7ziCEMfaiPIo=
+sha256-01e9HjMU/iGjWw2JoAYcI/hnNm9TEff4codrbe5Dp64=