Switch to flakehub-cache-action

.github/workflows/build.yaml

@@ -32,8 +32,8 @@ jobs:
       - uses: actions/checkout@v4
       - name: Install Nix on ${{ matrix.systems.system }}
         uses: DeterminateSystems/nix-installer-action@main
-      - name: Magic Nix Cache
-        uses: DeterminateSystems/magic-nix-cache-action@main
+      - name: Set up FlakeHub Cache
+        uses: DeterminateSystems/flakehub-cache-action@main
 
       - name: Build and cache dev shell for ${{ matrix.systems.nix-system }}
         run: |

.github/workflows/check-and-test.yaml

@@ -15,15 +15,16 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
-
       - name: Check health of flake.lock
         uses: DeterminateSystems/flake-checker-action@main
         with:
           fail-mode: true
 
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@main
+
+      - uses: DeterminateSystems/flakehub-cache-action@main
+
       - name: Check Rust formatting
         run: nix develop --command cargo fmt --check
 

.github/workflows/keygen.yaml

@@ -8,7 +8,7 @@ jobs:
       - uses: actions/checkout@v4
       - name: Install Nix
         uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
+      - uses: DeterminateSystems/flakehub-cache-action@main
       - name: Expose GitHub Runtime
         uses: crazy-max/ghaction-github-runtime@v2
       - name: Dump credentials