diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index ec2f029..3c00a64 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -1,4 +1,4 @@
-name: Run checks
+name: Checks
 
 on:
   pull_request:
@@ -6,17 +6,48 @@ on:
     branches: [main]
 
 jobs:
-  nix-checks:
+  nix-flake-check:
     name: Run nix flake check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: cachix/install-nix-action@v22
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - uses: cachix/cachix-action@v12
         with:
           name: dlr-ft
-          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
       - name: Nix Flake Check
         run: nix flake check
+
+  impure-checks:
+    name: Run check ${{ matrix.check }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        check:
+          - udeps
+          - treefmt --fail-on-change
+          - audit --deny warnings
+    steps:
+      - uses: actions/checkout@v3
+      - uses: cachix/install-nix-action@v22
+        with:
+          github_access_token: ${{ secrets.GITHUB_TOKEN }}
+      - uses: cachix/cachix-action@v12
+        with:
+          name: dlr-ft
+          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
+      - uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            target/
+          key: ${{ runner.os }}-${{ github.job }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+      - name: Run check ${{ matrix.check }}
+        run: nix develop --command ${{ matrix.check }}
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index ae55245..6d9035d 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -21,50 +21,24 @@ jobs:
       DURATION: 10s
       RUST_LOG: trace
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: cachix/install-nix-action@v22
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - uses: cachix/cachix-action@v12
         with:
           name: dlr-ft
-          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
+      - uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            target/
+          key: ${{ runner.os }}-${{ github.job }}-${{ matrix.example }}-cargo-${{ hashFiles('**/Cargo.lock') }}
       - name: Check CGroup
         run: systemd-run --user --scope cat /proc/self/cgroup
       - name: Run example ${{ matrix.example }}
-        run: nix develop --command systemd-run-example-${{ matrix.example }} --duration $DURATION  
-
-  checks:
-    name: Run check ${{ matrix.check }}
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        check:
-          - udeps
-          - treefmt --fail-on-change
-          - audit --deny warnings
-    steps:
-      - uses: actions/checkout@v2
-      - uses: cachix/install-nix-action@v13
-        with:
-          nix_path: nixpkgs=channel:nixos-stable
-          extra_nix_config: |
-            experimental-features = nix-command flakes
-            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
-      - name: Cache Nix store
-        uses: actions/cache@v3
-        id: nix-cache
-        with:
-          path: /tmp/nixcache
-          key: nix-${{ runner.os }}
-      - name: Import Nix store cache
-        if: "steps.nix-cache.outputs.cache-hit == 'true'"
-        run: nix copy --no-check-sigs --from /tmp/nixcache --all
-      - name: Run check ${{ matrix.check }}
-        run: nix develop --command ${{ matrix.check }}
-      - name: Export Nix store cache
-        if: "steps.nix-cache.outputs.cache-hit != 'true'"
-        run: |
-          nix copy --no-check-sigs --to /tmp/nixcache \
-            .#devShells.x86_64-linux.default
+        run: nix develop --command systemd-run-example-${{ matrix.example }} --duration $DURATION
diff --git a/Cargo.toml b/Cargo.toml
index 8113af6..dd28b17 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,4 +1,5 @@
 [workspace]
+resolver = "2"
 
 members = [
     "hypervisor",
diff --git a/examples/dev_random.yaml b/examples/dev_random.yaml
new file mode 100644
index 0000000..9acbcb4
--- /dev/null
+++ b/examples/dev_random.yaml
@@ -0,0 +1,10 @@
+major_frame: 1s
+partitions:
+  - id: 0
+    name: partition_0
+    duration: 1s
+    offset: 0ms
+    period: 1s
+    image: target/x86_64-unknown-linux-musl/release/dev_random
+    mounts:
+      - [/dev/random, /dev/random]
diff --git a/flake.nix b/flake.nix
index 7d1c4a1..ee7fe03 100644
--- a/flake.nix
+++ b/flake.nix
@@ -120,6 +120,7 @@
             cargo-audit
             cargo-expand
             nixpkgs-fmt
+            nodePackages.prettier
           ];
           git.hooks = {
             enable = true;