Any chance you could add SQLite?

  % uv run --with pyeryx python 
  Installed 1 package in 1ms
  Python 3.14.0 (main, Oct  7 2025, 16:07:00) [Clang 20.1.4 ] on darwin
  Type "help", "copyright", "credits" or "license" for more information.
  >>> import eryx
  >>> sandbox = eryx.Sandbox()
  >>> result = sandbox.execute('''
  ... print("Hello from the sandbox!")
  ... x = 2 + 2
  ... print(f"2 + 2 = {x}")
  ... ''')
  >>> result
  ExecuteResult(stdout="Hello from the sandbox!\n2 + 2 = 4", duration_ms=6.83, callback_invocations=0, peak_memory_bytes=Some(16384000))
  >>> sandbox.execute('''
  ... import sqlite3
  ... print(sqlite3.connect(":memory:").execute("select sqlite_version()").fetchall())
  ... ''').stdout
  Traceback (most recent call last):
    File "<python-input-6>", line 1, in <module>
      sandbox.execute('''
      ~~~~~~~~~~~~~~~^^^^
      import sqlite3
      ^^^^^^^^^^^^^^
      print(sqlite3.connect(":memory:").execute("select sqlite_version()").fetchall())
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      ''').stdout
      ^^^^
  eryx.ExecutionError: Traceback (most recent call last):
    File "<string>", line 1, in <module>
    File "<string>", line 125, in _eryx_exec
    File "<user>", line 2, in <module>
    File "/python-stdlib/sqlite3/__init__.py", line 57, in <module>
      from sqlite3.dbapi2 import *
    File "/python-stdlib/sqlite3/dbapi2.py", line 27, in <module>
      from _sqlite3 import *
  ModuleNotFoundError: No module named '_sqlite3'

  uv run --with localsandbox python -c '
  from localsandbox import LocalSandbox
  
  with LocalSandbox() as sandbox:
      result = sandbox.bash("echo hi")           
      print(result.stdout)                
  '
  

  Traceback (most recent call last):
    File "<string>", line 5, in <module>
      result = sandbox.bash("echo hi")
    File "/Users/simon/.cache/uv/archive-v0/spFCEHagkq3VTpTyStT-Z/lib/python3.14/site-packages/localsandbox/core.py", line 492, in bash
      raise SubprocessCrashed(
      ...<2 lines>...
      )
  localsandbox.exceptions.SubprocessCrashed: Node subprocess crashed: error: Failed reading lockfile at '/Users/simon/.cache/uv/archive-v0/spFCEHagkq3VTpTyStT-Z/lib/python3.14/site-packages/localsandbox/shim/deno.lock'
  
  Caused by:
      Unsupported lockfile version '5'. Try upgrading Deno or recreating the lockfile

The main issue that I see with Browserpod is very similar to Emscripten: it's designed to work mainly in the browser, and not outside.

In my view, where Wasm really shines, is for enabling containers that work seamlessly in any of this environments: browsers, servers, or even embedded in apps :)

That's true, but you'll likely need sockets, pydantic or SQLAlchemy (all of of them require heavy support on the Wasm layer!)

I did something very similar to you for networking in eryx too (no networking in conch yet); defined an `eryx:net` interface in WIT and reimplemented the `urllib` module using host networking, which most downstream packages (httpx, requests, etc) use far enough down the stack. It's a tradeoff but I think it's pretty much good enough for most use cases like this, and gives the host full control which is great.

Oh full transparency, the vast majority of conch and eryx were written by Opus 4.5. Being backed by wasmtime and the rather strict Rust compiler is definitely a boon here!