ci: flake update and adding ci (#253)

Author: sunng87

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
     name: Rustfmt
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: actions-rs/toolchain@v1
       with:
         toolchain: stable
@@ -23,7 +23,7 @@ jobs:
     name: Clippy lint
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: actions-rs/toolchain@v1
       with:
         toolchain: stable
@@ -46,21 +46,34 @@ jobs:
             os: ubuntu-latest
             rust: nightly
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: actions-rs/toolchain@v1
       with:
         toolchain: ${{ matrix.rust }}
         override: true
     - name: Build and run tests
       run: cargo test --all-features
 
+  cleanbuild-linux-nix:
+    name: Run clean build on Linux
+    runs-on: ubuntu-latest
+    needs: [test]
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
+          persist-credentials: false
+      - uses: cachix/install-nix-action@v31
+      - run: nix develop --command cargo test
+
   integration:
     name: Integration tests
     runs-on: ubuntu-latest
     timeout-minutes: 15
     needs: [test]
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: actions-rs/toolchain@v1
       with:
         toolchain: stable

flake.lock

@@ -21,9 +21,8 @@
         ]);
         buildInputs = with pkgs; [
           llvmPackages.libclang
-          libpq
-          duckdb.dev
-          duckdb.lib
+          libpq.dev
+          libpq.out
         ];
       in
       {
@@ -48,12 +47,11 @@
             postgresql_18.out
           ];
 
-          LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath buildInputs;
+          buildInputs = buildInputs;
+
           shellHook = ''
             export CC=clang
             export CXX=clang++
-            export DUCKDB_LIB_DIR="${pkgs.duckdb.lib}/lib"
-            export DUCKDB_INCLUDE_DIR="${pkgs.duckdb.dev}/include"
           '';
         };
       });