fix: pin Nix version to 2.28.4 to avoid JSON type error

ThomasK33 · ThomasK33 · commit ce6aacdb7dd6 · 2025-06-26T18:20:12.000+02:00
Change-Id: Ie024d5070dbe5901952fc52463c6602363ef8886
Signed-off-by: Thomas Kosiewski &lt;tk@coder.com&gt;
diff --git a/.github/workflows/dogfood.yaml b/.github/workflows/dogfood.yaml
@@ -36,6 +36,10 @@ jobs:
 
       - name: Setup Nix
         uses: nixbuild/nix-quick-install-action@889f3180bb5f064ee9e3201428d04ae9e41d54ad # v31
+        with:
+          # Pinning to 2.28 here, as Nix gets a "error: [json.exception.type_error.302] type must be array, but is string"
+          # on version 2.29 and above.
+          nix_version: "2.28.4"
 
       - uses: nix-community/cache-nix-action@135667ec418502fa5a3598af6fb9eb733888ce6a # v6.1.3
         with:
