From e304f66fca5fc4a03d22b9e004aaa137d2206546 Mon Sep 17 00:00:00 2001
From: bruwbird <bruwbird@mercari.com>
Date: Sat, 7 Sep 2024 10:42:20 +0900
Subject: [PATCH] ci: switch cache Nix store

Replaces the cachix/install-nix-action with the more
up-to-date nixbuild/nix-quick-install-action.
Additionally, it introduces caching of the
Nix store using nix-community/cache-nix-action
to avoide rate limit errors and speed up subsequent CI runs.

Configured cache restoration and garbage collection.
Added necessary Nix configuration to flake.nix for caching.
---
 .github/workflows/ci.yml | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b85965f7..9b30f1b5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -39,8 +39,23 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - name: Install Nix and run tests
-        uses: determinateSystems/nix-installer-action@v12
-      - uses: DeterminateSystems/magic-nix-cache-action@v7
-      - uses: DeterminateSystems/flake-checker-action@v8
+      - uses: nixbuild/nix-quick-install-action@v28
+      - name: Restore and cache Nix store
+        uses: nix-community/cache-nix-action@v5
+        with:
+          # restore and save a cache using this key
+          primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix') }}
+          # if there's no cache hit, restore a cache by this prefix
+          restore-prefixes-first-match: nix-${{ runner.os }}-
+          # collect garbage until Nix store size (in bytes) is at most this number
+          # before trying to save a new cache
+          gc-max-store-size-linux: 1073741824
+          # do purge caches
+          purge: true
+          # purge all versions of the cache
+          purge-prefixes: cache-${{ runner.os }}-
+          # created more than this number of seconds ago relative to the start of the `Post Restore` phase
+          purge-created: 0
+          # except the version with the `primary-key`, if it exists
+          purge-primary-key: never
       - run: nix-shell --run "make test-${{matrix.test-vector}}"
\ No newline at end of file