build(flake): split into flake modules

nix/wordle-solver-wasm-pkg.nix

@@ -1,39 +1,50 @@
 {
-  stdenvNoCC,
-  wasm-bindgen,
-  wordle-solver-wasm,
-  root-crate,
-  ...
-}: let
-  snake_name = "wordle_solver";
-  package-meta = {
-    name = "wordle-solver";
-    type = "module";
-    description = "module";
-    version = root-crate.build.crateVersion;
-    files = [
-      "${snake_name}_bg.wasm"
-      "${snake_name}.js"
-      "${snake_name}_bg.js"
-      "${snake_name}.d.ts"
-    ];
-    main = "${snake_name}.js";
-    types = "${snake_name}.d.ts";
-    sideEffects = [
-      "./${snake_name}.js"
-      "./snippets/*"
-    ];
+  perSystem = {
+    pkgs,
+    self',
+    ...
+  }: let
+    drv = {
+      stdenvNoCC,
+      wasm-bindgen,
+      wordle-solver-wasm,
+      ...
+    }: let
+      snake_name = "wordle_solver";
+      package-meta = {
+        name = "wordle-solver";
+        type = "module";
+        description = "module";
+        version = "0.1.0";
+        files = [
+          "${snake_name}_bg.wasm"
+          "${snake_name}.js"
+          "${snake_name}_bg.js"
+          "${snake_name}.d.ts"
+        ];
+        main = "${snake_name}.js";
+        types = "${snake_name}.d.ts";
+        sideEffects = [
+          "./${snake_name}.js"
+          "./snippets/*"
+        ];
+      };
+      package-json = builtins.toJSON package-meta;
+    in
+      stdenvNoCC.mkDerivation {
+        name = "wordle-solver-wasm-pkg";
+        nativeBuildInputs = [wasm-bindgen];
+        unpackPhase = "true";
+        buildPhase = ''
+          wasm-bindgen --target bundler --out-dir $out ${wordle-solver-wasm}/lib/wordle_solver.wasm
+          cat <<EOF > $out/package.json
+          ${package-json}
+          EOF
+        '';
+      };
+  in {
+    packages.wordle-solver-wasm-pkg = pkgs.callPackage drv {
+      inherit (self'.packages) wordle-solver-wasm wasm-bindgen;
+    };
   };
-  package-json = builtins.toJSON package-meta;
-in
-  stdenvNoCC.mkDerivation {
-    name = "wordle-solver-wasm-pkg";
-    nativeBuildInputs = [wasm-bindgen];
-    unpackPhase = "true";
-    buildPhase = ''
-      wasm-bindgen --target bundler --out-dir $out ${wordle-solver-wasm}/lib/wordle_solver.wasm
-      cat <<EOF > $out/package.json
-      ${package-json}
-      EOF
-    '';
-  }
+}