switch flake setup

.github/workflows/ci.yaml

@@ -3,7 +3,7 @@ on: [push, pull_request]
 name: Continuous integration
 
 jobs:
-  check:
+  checks:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -12,76 +12,17 @@ jobs:
         with:
           name: ci
           instance: https://cache.icewind.me
-          authToken: '${{ secrets.ATTIC_TOKEN }}'
-      - run: nix build .#check
-
-  msrv:
-    runs-on: ubuntu-latest
-    needs: check
-    steps:
-      - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v27
-      - uses: icewind1991/attic-action@v1
-        with:
-          name: ci
-          instance: https://cache.icewind.me
-          authToken: '${{ secrets.ATTIC_TOKEN }}'
-      - run: nix build .#msrv
-
-  clippy:
-    runs-on: ubuntu-latest
-    needs: check
-    steps:
-      - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v27
-      - uses: icewind1991/attic-action@v1
-        with:
-          name: ci
-          instance: https://cache.icewind.me
-          authToken: '${{ secrets.ATTIC_TOKEN }}'
-      - run: nix build .#clippy
-
-  tests:
-    runs-on: ubuntu-latest
-    needs: check
-    steps:
-      - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v27
-      - uses: icewind1991/attic-action@v1
-        with:
-          name: ci
-          instance: https://cache.icewind.me
-          authToken: '${{ secrets.ATTIC_TOKEN }}'
-      - run: nix build .#test
-
-  fmt:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v27
-      - uses: icewind1991/attic-action@v1
-        with:
-          name: ci
-          instance: https://cache.icewind.me
-          authToken: '${{ secrets.ATTIC_TOKEN }}'
-      - run: nix build .#fmt
-
-  miri-matrix:
-    runs-on: ubuntu-latest
-    outputs:
-      matrix: ${{ steps.set-matrix.outputs.matrix }}
-    steps:
-      - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v27
-      - id: set-matrix
-        run: echo "matrix={\"target\":$(nix eval --json ".#miriTargets.x86_64-linux")}" | tee $GITHUB_OUTPUT
+          authToken: "${{ secrets.ATTIC_TOKEN }}"
+      - run: nix flake check --keep-going
 
   miri-tests:
     runs-on: ubuntu-latest
-    needs: [tests, miri-matrix]
+    needs: [checks]
     strategy:
       fail-fast: false
-      matrix: ${{fromJson(needs.miri-matrix.outputs.matrix)}}
+      matrix:
+        toolchain:
+          ["x86_64-unknown-linux-musl", "mips64-unknown-linux-gnuabi64"]
     steps:
       - uses: actions/checkout@v4
       - uses: cachix/install-nix-action@v27
@@ -89,13 +30,18 @@ jobs:
         with:
           name: ci
           instance: https://cache.icewind.me
-          authToken: '${{ secrets.ATTIC_TOKEN }}'
-      - run: nix develop .#miri -c cargo miri test --target ${{ matrix.target }}
+          authToken: "${{ secrets.ATTIC_TOKEN }}"
+      - run: nix run .#miri -- test --target ${{ matrix.target }}
 
   semver:
     runs-on: ubuntu-latest
-    needs: check
+    needs: checks
     steps:
       - uses: actions/checkout@v4
-      - name: Check semver
-        uses: obi1kenobi/cargo-semver-checks-action@v2
+      - uses: cachix/install-nix-action@v27
+      - uses: icewind1991/attic-action@v1
+        with:
+          name: ci
+          instance: https://cache.icewind.me
+          authToken: "${{ secrets.ATTIC_TOKEN }}"
+      - run: nix run .#semver-checks