diff --git a/core/_repl.ts b/core/_repl.ts
index 983a9e8..5eefae0 100644
--- a/core/_repl.ts
+++ b/core/_repl.ts
@@ -1,7 +1,13 @@
-import type { TarStreamEntry } from "@std/tar/untar-stream";
-import { UntarStream } from "@std/tar/untar-stream";
+import type { TarStreamEntry } from "@bundle/utils/tar";
+import { UntarStream } from "@bundle/utils/tar";
 import { normalize, join } from "@bundle/utils/path";
 
+import { getFile, setFile, PLATFORM_AUTO, TheFileSystem } from "./mod.ts";
+import { context, cancel, dispose, rebuild, } from "./mod.ts";
+
+const fs = await TheFileSystem;
+
+
 // const response = await fetch("https://pkg.pr.new/@tanstack/react-query@7988");
 // const content = await response.arrayBuffer();
 
@@ -63,36 +69,36 @@ import { normalize, join } from "@bundle/utils/path";
 //       console.log({
 //         path: join("./", path)
 //       })
-//       // setFile(args.namespace + ":" + join("./", path), uint8arr);
+//       setFile(fs, join("./tar/", path), uint8arr);
 //   }
 
 // }
 
 
 
-import { getFile, setFile, PLATFORM_AUTO, TheFileSystem } from "./mod.ts";
-import { context, cancel, dispose, rebuild, } from "./mod.ts";
 
 
-const fs = await TheFileSystem;
-
 // console.log({
 //   version: await resolveVersion(`esbuild@0.18`)
 // })
 console.log("\n");
-await setFile(fs, "/index.tsx", `\
-export * as Other from "/new.tsx";
-export * from "@okikio/animate";`);
-await setFile(fs, "/new.tsx", "export * from \"@okikio/native\";");
-await setFile(fs, "/other.tsx", `\
-export * as Other from "/index.tsx";
-export * from "@okikio/emitter";`);
-
-console.log(await getFile(fs, "/index.tsx", "string") )
+// await setFile(fs, "/index.tsx", `\
+// export * as Other from "/new.tsx";
+// export * from "@okikio/animate";`);
+// await setFile(fs, "/new.tsx", "export * from \"@okikio/native\";");
+await setFile(fs, "/new.tsx", "export * from \"https://pkg.pr.new/@tanstack/react-query@7988\"")
+// await setFile(fs, "/other.tsx", `\
+// export * as Other from "/index.tsx";
+// export * from "@okikio/emitter";`);
+
+// console.log(await getFile(fs, "/index.tsx", "string") )
+
+console.log(await getFile(fs, "/new.tsx", "string") )
 console.log(fs)
 
 const ctx = await context({
-  entryPoints: ["/index.tsx", "/new.tsx"],
+  // "/index.tsx",
+  entryPoints: ["/new.tsx"],
   esbuild: {
     treeShaking: true,
     splitting: true,
@@ -116,20 +122,20 @@ console.log({
 });
 
 
-await setFile(fs, "/index.tsx", `\
-  export * as Other from "/new.tsx";
-  export * from "spring-easing";`);
-const result2 = await rebuild(ctx);
+// await setFile(fs, "/index.tsx", `\
+//   export * as Other from "/new.tsx";
+//   export * from "spring-easing";`);
+// const result2 = await rebuild(ctx);
 
 
-console.log({
-  result2,
-  // packageManifests: result2.state.packageManifests,
-  //   // await compress(
-  //   //   result.contents.map((x: any) => x?.contents),
-  //   //   { type: "gzip" }
-  //   // )
-});
+// console.log({
+//   result2,
+//   // packageManifests: result2.state.packageManifests,
+//   //   // await compress(
+//   //   //   result.contents.map((x: any) => x?.contents),
+//   //   //   { type: "gzip" }
+//   //   // )
+// });
 
 await cancel(ctx);
 await dispose(ctx);
diff --git a/core/build.ts b/core/build.ts
index 180fecf..d3b3125 100644
--- a/core/build.ts
+++ b/core/build.ts
@@ -3,6 +3,7 @@ import type { FullPackageVersion, PackageJson } from "@bundle/utils/types";
 
 import { VirtualFileSystemPlugin } from "./plugins/fs.ts";
 import { ExternalPlugin } from "./plugins/external.ts";
+import { TarballPlugin } from "./plugins/tar.ts";
 import { AliasPlugin } from "./plugins/alias.ts";
 import { HttpPlugin } from "./plugins/http.ts";
 import { CdnPlugin } from "./plugins/cdn.ts";
@@ -73,12 +74,14 @@ export async function build(opts: BuildConfig = {}, filesystem: Promise<IFileSys
     filesystem: await filesystem,
     assets: [],
     config: createConfig("build", opts),
-    failedExtensionChecks: new Set<string>(),
-    failedManifestUrls: new Set<string>(),
+    failedExtensionChecks: new Set(),
+    failedManifestUrls: new Set(),
     host: DEFAULT_CDN_HOST,
-    versions: new Map<string, string>(),
+    versions: new Map(),
+    tarballInflight: new Map(),
+    tarballMounts: new Map(),
 
-    packageManifests: new Map<string, PackageJson | FullPackageVersion>(),
+    packageManifests: new Map(),
   });
 
   const LocalConfig = fromContext("config", StateContext)!;
@@ -121,6 +124,7 @@ export async function build(opts: BuildConfig = {}, filesystem: Promise<IFileSys
           AliasPlugin(StateContext),
           ExternalPlugin(StateContext),
           VirtualFileSystemPlugin(StateContext),
+          TarballPlugin(StateContext),
           HttpPlugin(StateContext),
           CdnPlugin(StateContext.with({ origin: host }) as Context<LocalState & { origin: string }>),
         ],
@@ -211,7 +215,10 @@ export async function formatBuildResult(_ctx: BuildResultContext) {
     // FileSystem.clear();
     // console.log({ contentsLen: contents.length })
 
-    const packageManifests = fromContext('packageManifests', StateContext) ?? new Map<string, PackageJson | FullPackageVersion>();
+    const packageManifests = 
+      fromContext('packageManifests', StateContext)
+      ?? new Map<string, PackageJson | FullPackageVersion>();
+    
     const packageSizeArr: [string, string][] = [];
     let totalInstallSize = 0;
 
diff --git a/core/context.ts b/core/context.ts
index a6dc7e4..d1a0201 100644
--- a/core/context.ts
+++ b/core/context.ts
@@ -1,9 +1,9 @@
-import type { FullPackageVersion, PackageJson } from "@bundle/utils/types";
 import type { BuildConfig, ESBUILD, LocalState } from "./types.ts";
 import type { BuildResult } from "./build.ts";
 
 import { VirtualFileSystemPlugin } from "./plugins/fs.ts";
 import { ExternalPlugin } from "./plugins/external.ts";
+import { TarballPlugin } from "./plugins/tar.ts";
 import { AliasPlugin } from "./plugins/alias.ts";
 import { HttpPlugin } from "./plugins/http.ts";
 import { CdnPlugin } from "./plugins/cdn.ts";
@@ -30,11 +30,15 @@ export async function context(opts: BuildConfig = {}, filesystem = TheFileSystem
     filesystem: await filesystem,
     assets: [],
     config: createConfig("build", opts),
-    failedExtensionChecks: new Set<string>(),
-    failedManifestUrls: new Set<string>(),
+    failedExtensionChecks: new Set(),
+    failedManifestUrls: new Set(),
     host: DEFAULT_CDN_HOST,
-    versions: new Map<string, string>(),
-    packageManifests: new Map<string, PackageJson | FullPackageVersion>(),
+    versions: new Map(),
+    
+    tarballInflight: new Map(),
+    tarballMounts: new Map(),
+
+    packageManifests: new Map(),
   });
 
   const LocalConfig = fromContext("config", StateContext)!;
@@ -77,6 +81,7 @@ export async function context(opts: BuildConfig = {}, filesystem = TheFileSystem
           AliasPlugin(StateContext),
           ExternalPlugin(StateContext),
           VirtualFileSystemPlugin(StateContext),
+          TarballPlugin(StateContext),
           HttpPlugin(StateContext),
           CdnPlugin(StateContext.with({ origin: host }) as Context<LocalState & { origin: string }>),
         ],
diff --git a/core/types.ts b/core/types.ts
index 08d41db..3ee3365 100644
--- a/core/types.ts
+++ b/core/types.ts
@@ -3,8 +3,9 @@ import type * as ESBUILD_WASM from "esbuild-wasm";
 import type { FullPackageVersion, PackageJson } from "@bundle/utils/types";
 import type { InitOptions } from "./init.ts";
 
-import type { IFileSystem } from "./utils/filesystem.ts";
 import type { record } from "./context/context.ts";
+import type { IFileSystem } from "./utils/filesystem.ts";
+import type { TarballState } from "./plugins/tar.ts";
 
 export type { ESBUILD, ESBUILD_WASM };
 
@@ -18,7 +19,7 @@ export interface CommonConfigOptions extends record {
 /**
  * Local state available to all plugins
  */
-export interface LocalState<T = unknown> extends record {
+export interface LocalState<T = unknown> extends TarballState, record {
   filesystem: IFileSystem<T>,
 
   /**