functional flake (I hope)

flake.lock

@@ -0,0 +1,26 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1749285348,
+        "narHash": "sha256-frdhQvPbmDYaScPFiCnfdh3B/Vh81Uuoo0w5TkWmmjU=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "3e3afe5174c561dee0df6f2c2b2236990146329f",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-unstable",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,52 @@
+{
+  inputs = {
+    nixpkgs.url = "nixpkgs/nixos-unstable";
+  };
+  outputs = {nixpkgs, ...}: let
+    system = "x86_64-linux";
+    pkgs = nixpkgs.legacyPackages.${system};
+    pkg = pkgs.stdenv.mkDerivation {
+      name = "jank-client";
+      src = ./.;
+      nativeBuildInputs = [
+        pkgs.compose2nix
+      ];
+      buildPhase = ''
+        compose2nix -runtime "docker" -inputs "compose.yaml" -output "jank-client.nix" -project "jank-client"
+        echo "#!/usr/bin/env bash" > start-server
+        echo "systemctl start docker-build-jank-client-jank.service" >> start-server
+        echo "systemctl restart docker-jank-client-jank.service" >> start-server
+      '';
+      installPhase = ''
+        mkdir $out/bin -p
+        cp start-server $out/bin/jank-client
+        cp jank-client.nix $out/jank-client.nix
+      '';
+    };
+  in {
+    packages.${system}.default = pkg;
+    nixosModules.${system}.default = {
+      lib,
+      config,
+      ...
+    }: {
+      options = {
+        services.jank-client = {
+          enable = lib.mkEnableOption "jank client";
+          package = lib.mkOption {
+            description = "jank client package";
+            default = pkgs.callPackage pkg;
+            type = lib.types.package;
+          };
+        };
+      };
+      config = lib.mkIf config.services.jank-client.enable {
+        environment.systemPackages = [
+          (lib.getExe
+            config.services.jank-client.package)
+        ];
+        imports = ["${config.services.jank-client.package}/jank-client.nix"];
+      };
+    };
+  };
+}

result

@@ -0,0 +1 @@
+/nix/store/j30k62wridxiqb0xwfskrshp6rsyywig-jank-client