From b147e6a6afb9cc9d8656f3877b300b47b55e5d79 Mon Sep 17 00:00:00 2001
From: Matt Sturgeon <matt@sturgeon.me.uk>
Date: Sun, 25 May 2025 23:30:14 +0100
Subject: [PATCH] ci: stringify `builds` to JSON

---
 .github/workflows/check.yml | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 90fb3fec..3c32986d 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -27,7 +27,10 @@ jobs:
         id: set-matrix
         run: |
           set -Eeu
-          matrix="$(nix eval --json .#githubActions.matrix)"
+          matrix=$(
+            nix eval --json .#githubActions.matrix \
+                --apply 'map (m: m // { builds = builtins.toJSON m.builds; })'
+          )
           echo "matrix=$matrix" >> "$GITHUB_OUTPUT"
 
   build:
@@ -40,4 +43,4 @@ jobs:
     secrets: inherit
     with:
       name: ${{ matrix.name }}
-      builds: ${{ toJSON(matrix.builds) }}
+      builds: ${{ matrix.builds }}