diff --git a/.github/workflows/crane.yml b/.github/workflows/crane.yml
index 9cb6f48..5d9831a 100644
--- a/.github/workflows/crane.yml
+++ b/.github/workflows/crane.yml
@@ -8,24 +8,111 @@ on:
   schedule:
     - cron: 0 0 * * 1
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref && github.ref || github.run_id }}
+  cancel-in-progress: true
+
 env:
   CARGO_TERM_COLOR: always
 
 jobs:
-  check:
-    name: check
+  check-dependencies:
+    name: check-dependencies
     runs-on: ubuntu-latest
     permissions:
       contents: read
       id-token: write
+      actions: write
+
+    strategy:
+      matrix:
+        system: [x86_64-linux]
+        check-type: [my-crate-fmt, my-crate]
+
     steps:
       - uses: actions/checkout@v3
-      - uses: DeterminateSystems/nix-installer-action@main
+      - uses: nixbuild/nix-quick-install-action@v32
+        with:
+          nix_conf: |
+            keep-env-derivations = true
+            keep-outputs = true
+
+      - name: Restore Nix store cache
+        id: cache-nix-restore
+        uses: nix-community/cache-nix-action/restore@v6
+        with:
+          primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix', '**/flake.lock') }}
+          restore-prefixes-first-match: nix-${{ runner.os }}-
+
       - run: nix run -I nixpkgs=channel:nixos-unstable nixpkgs#attic-client login nex https://nix.nexveridian.com ${{ secrets.ATTIC_TOKEN }} || true
       - run: nix run -I nixpkgs=channel:nixos-unstable nixpkgs#attic-client cache create ark-invest-api-rust || true
       - run: nix run -I nixpkgs=channel:nixos-unstable nixpkgs#attic-client use ark-invest-api-rust || true
-      - run: nix flake check --all-systems
-      - run: |
+
+      - run: nix build -I nixpkgs=channel:nixos-unstable nixpkgs#nix-fast-build
+      - name: Save Nix store cache
+        id: cache-nix-save
+        uses: nix-community/cache-nix-action/save@v6
+        with:
+          primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix', '**/flake.lock') }}
+          gc-max-store-size-linux: 2G
+          purge: true
+          purge-prefixes: nix-${{ runner.os }}-
+          purge-created: 0
+          purge-last-accessed: 0
+          purge-primary-key: never
+
+      - name: check
+        run: |
+          nix run -I nixpkgs=channel:nixos-unstable nixpkgs#nix-fast-build -- --flake ".#checks.$(nix eval --raw --impure --expr builtins.currentSystem).${{ matrix.check-type }}" --no-nom --skip-cached
+
+      - name: Push to attic
+        if: always()
+        run: |
+          for i in {1..10}; do
+            nix run -I nixpkgs=channel:nixos-unstable nixpkgs#attic-client push ark-invest-api-rust /nix/store/*/ && break || [ $i -eq 5 ] || sleep 5
+          done
+
+  check-matrix:
+    name: check-matrix
+    needs: check-dependencies
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+      actions: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        system: [x86_64-linux]
+        check-type: [my-crate-clippy, my-crate-nextest]
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: nixbuild/nix-quick-install-action@v32
+        with:
+          nix_conf: |
+            keep-env-derivations = true
+            keep-outputs = true
+
+      - name: Restore Nix store cache
+        id: cache-nix-restore
+        uses: nix-community/cache-nix-action/restore@v6
+        with:
+          primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix', '**/flake.lock') }}
+          restore-prefixes-first-match: nix-${{ runner.os }}-
+
+      - run: nix run -I nixpkgs=channel:nixos-unstable nixpkgs#attic-client login nex https://nix.nexveridian.com ${{ secrets.ATTIC_TOKEN }} || true
+      - run: nix run -I nixpkgs=channel:nixos-unstable nixpkgs#attic-client cache create ark-invest-api-rust || true
+      - run: nix run -I nixpkgs=channel:nixos-unstable nixpkgs#attic-client use ark-invest-api-rust || true
+
+      - name: check
+        run: |
+          nix run -I nixpkgs=channel:nixos-unstable nixpkgs#nix-fast-build -- --flake ".#checks.$(nix eval --raw --impure --expr builtins.currentSystem).${{ matrix.check-type }}" --no-nom --skip-cached
+
+      - name: Push to attic
+        if: always()
+        run: |
           for i in {1..10}; do
             nix run -I nixpkgs=channel:nixos-unstable nixpkgs#attic-client push ark-invest-api-rust /nix/store/*/ && break || [ $i -eq 5 ] || sleep 5
           done