From 92b3a3b0a95da696b1f39dced0f2ac01281df07c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pawe=C5=82=20Pacana?= <pawel.pacana@gmail.com>
Date: Thu, 25 Jun 2026 15:56:26 +0200
Subject: [PATCH] Reapply "Cache the Nix store in GitHub Actions"

This reverts commit 7314af0a2ec8cf53c1520eb1fe346e23f09320ec.
---
 .github/workflows/main.yml | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index b69cad9..d4469aa 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -27,6 +27,19 @@ jobs:
         with:
           extra_nix_config: |
             accept-flake-config = true
+            keep-outputs = true
+            keep-env-derivations = true
+      - name: Cache Nix store
+        uses: nix-community/cache-nix-action@v7
+        with:
+          primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix', 'devenv.lock', 'devenv.yaml') }}
+          restore-prefixes-first-match: nix-${{ runner.os }}-
+          gc-max-store-size-linux: 1G
+          purge: true
+          purge-prefixes: nix-${{ runner.os }}-
+          purge-created: 0
+          purge-last-accessed: P1DT12H
+          purge-primary-key: never
       - name: Set up cachix
         uses: cachix/cachix-action@v16
         with:
-- 
2.51.2