diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
new file mode 100644
index 00000000..3a2551f6
--- /dev/null
+++ b/.github/workflows/nix.yml
@@ -0,0 +1,39 @@
+name: "CI - Nix"
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  nix:
+    runs-on: "${{ matrix.os }}-latest"
+    strategy:
+      matrix:
+        os: [ubuntu, macos]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v31
+      - uses: cachix/cachix-action@v16
+        with:
+          name: gepetto
+          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+      - run: nix build -L
+
+  check:
+    if: always()
+    name: check-macos-linux-nix
+
+    needs:
+      - nix
+
+    runs-on: Ubuntu-latest
+
+    steps:
+      - name: Decide whether the needed jobs succeeded or failed
+        uses: re-actors/alls-green@release/v1
+        with:
+          jobs: ${{ toJSON(needs) }}
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 00000000..25475b17
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1754487366,
+        "narHash": "sha256-pHYj8gUBapuUzKV/kN/tR3Zvqc7o6gdFB9XKXIp1SQ8=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "af66ad14b28a127c5c0f3bbb298218fc63528a18",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1756266583,
+        "narHash": "sha256-cr748nSmpfvnhqSXPiCfUPxRz2FJnvf/RjJGvFfaCsM=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "8a6d5427d99ec71c64f0b93d45778c889005d9c2",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-lib": {
+      "locked": {
+        "lastModified": 1753579242,
+        "narHash": "sha256-zvaMGVn14/Zz8hnp4VWT9xVnhc8vuL3TStRqwk22biA=",
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "rev": "0f36c44e01a6129be94e3ade315a5883f0228a6e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-parts": "flake-parts",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 00000000..94a67350
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,33 @@
+{
+  description = "Bindings between Numpy and Eigen using nanobind";
+
+  inputs = {
+    flake-parts.url = "github:hercules-ci/flake-parts";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  };
+
+  outputs =
+    inputs:
+    inputs.flake-parts.lib.mkFlake { inherit inputs; } {
+      systems = inputs.nixpkgs.lib.systems.flakeExposed;
+      perSystem =
+        { pkgs, self', ... }:
+        {
+          packages = {
+            default = self'.packages.nanoeigenpy;
+            nanoeigenpy = pkgs.python3Packages.nanoeigenpy.overrideAttrs (_: {
+              src = pkgs.lib.fileset.toSource {
+                root = ./.;
+                fileset = pkgs.lib.fileset.unions [
+                  ./CMakeLists.txt
+                  ./include
+                  ./package.xml
+                  ./src
+                  ./tests
+                ];
+              };
+            });
+          };
+        };
+    };
+}