feat: add Nix flake and package

README.md

@@ -101,6 +101,21 @@ Visit https://www.pgschema.com/installation
 > [!NOTE]
 > Windows is not supported. Please use WSL (Windows Subsystem for Linux) or a Linux VM.
 
+### Nix (flake)
+
+```bash
+nix build
+nix run
+```
+
+To pass arguments, use `--`:
+
+```bash
+nix run . -- plan
+```
+
+If the build fails with a `vendorHash` mismatch, update `nix/pgschema.nix` with the hash printed by Nix.
+
 ## Getting help
 
 - [Docs](https://www.pgschema.com)

default.nix

@@ -0,0 +1,3 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.callPackage ./nix/pgschema.nix {}

flake.nix

@@ -0,0 +1,39 @@
+{
+  description = "pgschema";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
+  };
+
+  outputs = { self, nixpkgs }:
+    let
+      systems = [
+        "x86_64-linux"
+        "aarch64-linux"
+        "x86_64-darwin"
+        "aarch64-darwin"
+      ];
+      forAllSystems = f: nixpkgs.lib.genAttrs systems (system: f system);
+    in
+    {
+      packages = forAllSystems (system:
+        let
+          pkgs = import nixpkgs { inherit system; };
+          pgschema = pkgs.callPackage ./nix/pgschema.nix {
+            rev = self.shortRev or "dirty";
+            buildDate = self.lastModifiedDate or "unknown";
+          };
+        in
+        {
+          inherit pgschema;
+          default = pgschema;
+        });
+
+      apps = forAllSystems (system: {
+        default = {
+          type = "app";
+          program = "${self.packages.${system}.pgschema}/bin/pgschema";
+        };
+      });
+    };
+}

nix/pgschema.nix

@@ -0,0 +1,39 @@
+{ pkgs ? import <nixpkgs> {}, rev ? "unknown", buildDate ? "unknown" }:
+
+let
+  lib = pkgs.lib;
+  version = lib.strings.removeSuffix "\n" (builtins.readFile ../internal/version/VERSION);
+in
+pkgs.buildGoModule {
+  pname = "pgschema";
+  inherit version;
+
+  src = lib.cleanSource ../.;
+  # Prefer Go 1.24 when available; fall back to the closest newer toolchain.
+  go = if pkgs ? go_1_24 then pkgs.go_1_24 else pkgs.go_1_25;
+  subPackages = [ "." ];
+  proxyVendor = true;
+
+  # Update if `nix build` reports a vendorHash mismatch.
+  vendorHash = "sha256-3nV7AEsWyEvIbxHetoEsA8PPXJ6ENvU/sz7Wn5aysss=";
+
+  env = {
+    CGO_ENABLED = "0";
+  };
+  ldflags = [
+    "-s"
+    "-w"
+    "-X"
+    "github.com/pgplex/pgschema/cmd.GitCommit=${rev}"
+    "-X"
+    "github.com/pgplex/pgschema/cmd.BuildDate=${buildDate}"
+  ];
+
+  meta = with lib; {
+    description = "PostgreSQL schema management tool";
+    homepage = "https://www.pgschema.com";
+    license = licenses.asl20;
+    mainProgram = "pgschema";
+    platforms = platforms.unix;
+  };
+}