diff --git a/.nanvix/config.py b/.nanvix/config.py
index 61eaf1e99b..27a0bc0b32 100644
--- a/.nanvix/config.py
+++ b/.nanvix/config.py
@@ -49,81 +49,6 @@
 DOCKER_WORKSPACE_PATH = "/mnt/workspace"
 
 
-def toolchain_paths(
-    toolchain: str | Path,
-    sysroot: str | Path,
-) -> dict[str, Path]:
-    """Return resolved paths to toolchain binaries and libraries."""
-    tc = Path(toolchain)
-    sr = Path(sysroot)
-    return {
-        "cc": tc / "bin" / f"{TOOLCHAIN_TRIPLET}-gcc",
-        "cxx": tc / "bin" / f"{TOOLCHAIN_TRIPLET}-g++",
-        "ld": tc / "bin" / f"{TOOLCHAIN_TRIPLET}-ld",
-        "ar": tc / "bin" / f"{TOOLCHAIN_TRIPLET}-ar",
-        "ranlib": tc / "bin" / f"{TOOLCHAIN_TRIPLET}-ranlib",
-        "strip": tc / "bin" / f"{TOOLCHAIN_TRIPLET}-strip",
-        "build_python": tc / "bin" / "python3",
-        "libc": tc / f"{TOOLCHAIN_TRIPLET}" / "lib" / "libc.a",
-        "libm": tc / f"{TOOLCHAIN_TRIPLET}" / "lib" / "libm.a",
-        "libposix": sr / "lib" / "libposix.a",
-        "libz": sr / "lib" / "libz.a",
-        "libsqlite3": sr / "lib" / "libsqlite3.a",
-        "libssl": sr / "lib" / "libssl.a",
-        "libcrypto": sr / "lib" / "libcrypto.a",
-        "liblzma": sr / "lib" / "liblzma.a",
-        "libnvx_crt0": sr / "lib" / "libnvx_crt0.a",
-    }
-
-
-def configure_env(toolchain: str | Path, sysroot: str | Path) -> dict[str, str]:
-    """Return the environment dict for ./configure.
-
-    NOTE: This helper is currently unused; the actual cpython build invokes
-    ``make -f Makefile.nanvix`` which has its own inline CONFIGURE_ENV. This
-    function is kept in sync so a future caller does not pick up stale link
-    flags. See ``Makefile.nanvix`` for the authoritative comment block
-    explaining the ``--whole-archive`` / ``--export-dynamic`` /
-    ``--allow-multiple-definition`` rationale.
-    """
-    tp = toolchain_paths(toolchain, sysroot)
-    sr = Path(sysroot)
-    return {
-        "CC": str(tp["cc"]),
-        "CXX": str(tp["cxx"]),
-        "LD": str(tp["ld"]),
-        "AR": str(tp["ar"]),
-        "RANLIB": str(tp["ranlib"]),
-        "CFLAGS": (
-            f"-O3 -fomit-frame-pointer -fno-unwind-tables "
-            f"-fno-asynchronous-unwind-tables -I{sr}/include"
-        ),
-        "CFLAGS_NODIST": "-fno-semantic-interposition",
-        "LDFLAGS": (
-            f"-L{sr}/lib -T{sr}/lib/user.ld "
-            f"-Wl,--allow-multiple-definition -no-pie "
-            f"-Wl,--export-dynamic -Wl,--no-dynamic-linker"
-        ),
-        "LIBS": (
-            f"-Wl,--whole-archive {tp['libnvx_crt0']} {tp['libposix']} "
-            f"{tp['libc']} {tp['libm']} "
-            f"-lstdc++ -lgcc -Wl,--no-whole-archive "
-            f"-Wl,--start-group "
-            f"-lsqlite3 -lz -lbz2 -llzma -Wl,--end-group"
-        ),
-        "LIBSQLITE3_LIBS": f"-L{sr}/lib -lsqlite3",
-        "LIBSQLITE3_CFLAGS": f"-I{sr}/include",
-        "ZLIB_LIBS": f"-L{sr}/lib -lz",
-        "ZLIB_CFLAGS": f"-I{sr}/include",
-        "BZIP2_LIBS": f"-L{sr}/lib -lbz2",
-        "BZIP2_CFLAGS": f"-I{sr}/include",
-        "LIBLZMA_LIBS": f"-L{sr}/lib -llzma",
-        "LIBLZMA_CFLAGS": f"-I{sr}/include",
-        "LIBFFI_LIBS": f"-L{sr}/lib -lffi",
-        "LIBFFI_CFLAGS": f"-I{sr}/include",
-    }
-
-
 def configure_opts(
     build_python: str | Path,
     libc: str | Path,
diff --git a/.nanvix/setup_local.py b/.nanvix/setup_local.py
index 3fdcd701ce..529b1d8e39 100644
--- a/.nanvix/setup_local.py
+++ b/.nanvix/setup_local.py
@@ -202,19 +202,15 @@ class SetupEntry(NamedTuple):
     # their own _hacl translation units rather than linking a shared
     # libHacl_Hash_*.a -- same shape as upstream.
     SetupEntry(
-        name="_asyncio",
+        name="_decimal",
         linkage=Linkage.SHARED,
-        tokens=("_asynciomodule.c",),
+        tokens=("_decimal/_decimal.c",),
         section_header=(
             "Modules with bundled-in-cpython C deps. Each .so bundles "
             "its own vendored .a, matching upstream cpython's default "
             "./configure behavior."
         ),
     ),
-    SetupEntry(name="_datetime", linkage=Linkage.SHARED, tokens=("_datetimemodule.c",)),
-    SetupEntry(
-        name="_decimal", linkage=Linkage.SHARED, tokens=("_decimal/_decimal.c",)
-    ),
     SetupEntry(name="pyexpat", linkage=Linkage.SHARED, tokens=("pyexpat.c",)),
     SetupEntry(name="_elementtree", linkage=Linkage.SHARED, tokens=("_elementtree.c",)),
     SetupEntry(
@@ -268,6 +264,23 @@ class SetupEntry(NamedTuple):
             "_blake2/blake2s_impl.c",
         ),
     ),
+    # ---------------- POSIX syscall wrappers + concurrency primitives ---
+    #
+    # No external or bundled C deps -- these are thin POSIX/syscall
+    # wrappers plus _asyncio / _datetime, all matching upstream
+    # Modules/Setup.stdlib.in's "Modules with some UNIX dependencies"
+    # grouping. libc / libm symbols (if any) resolve against
+    # python.elf .dynsym at dlopen time via --export-dynamic.
+    SetupEntry(
+        name="_asyncio",
+        linkage=Linkage.SHARED,
+        tokens=("_asynciomodule.c",),
+        section_header=(
+            "POSIX syscall wrappers + _asyncio / _datetime "
+            "(no external or bundled deps)."
+        ),
+    ),
+    SetupEntry(name="_datetime", linkage=Linkage.SHARED, tokens=("_datetimemodule.c",)),
     SetupEntry(name="select", linkage=Linkage.SHARED, tokens=("selectmodule.c",)),
     SetupEntry(name="_socket", linkage=Linkage.SHARED, tokens=("socketmodule.c",)),
     SetupEntry(
diff --git a/Makefile.nanvix b/Makefile.nanvix
index b99de253cd..09bb08f7f6 100644
--- a/Makefile.nanvix
+++ b/Makefile.nanvix
@@ -87,10 +87,6 @@ ifdef CONFIG_NANVIX
     LIBC := $(DOCKER_TOOLCHAIN_PATH)/i686-nanvix/lib/libc.a
     LIBM := $(DOCKER_TOOLCHAIN_PATH)/i686-nanvix/lib/libm.a
     LIBPOSIX := $(DOCKER_SYSROOT_PATH)/lib/libposix.a
-    LIBZ := $(DOCKER_SYSROOT_PATH)/lib/libz.a
-    LIBSQLITE3 := $(DOCKER_SYSROOT_PATH)/lib/libsqlite3.a
-    LIBSSL := $(DOCKER_SYSROOT_PATH)/lib/libssl.a
-    LIBCRYPTO := $(DOCKER_SYSROOT_PATH)/lib/libcrypto.a
     # libnvx_crt0 ships the executable startup symbols (`_do_start`, `_start`,
     # `c_trampoline`).  It must be present in the Nanvix sysroot ahead of this
     # cpython build; the existence check below fails loudly when it is not.
@@ -102,10 +98,6 @@ ifdef CONFIG_NANVIX
     LIBC := $(NANVIX_TOOLCHAIN)/i686-nanvix/lib/libc.a
     LIBM := $(NANVIX_TOOLCHAIN)/i686-nanvix/lib/libm.a
     LIBPOSIX := $(abspath $(NANVIX_HOME))/lib/libposix.a
-    LIBZ := $(abspath $(NANVIX_HOME))/lib/libz.a
-    LIBSQLITE3 := $(abspath $(NANVIX_HOME))/lib/libsqlite3.a
-    LIBSSL := $(abspath $(NANVIX_HOME))/lib/libssl.a
-    LIBCRYPTO := $(abspath $(NANVIX_HOME))/lib/libcrypto.a
     LIBNVX_CRT0 := $(abspath $(NANVIX_HOME))/lib/libnvx_crt0.a
     BUILD_PYTHON := $(NANVIX_TOOLCHAIN)/bin/python3
   endif
@@ -258,7 +250,7 @@ CONFIGURE_OPTS = \
 	ac_cv_func_getsockname=yes \
 	ac_cv_func_inet_aton=no \
 	ac_cv_func_inet_ntoa=yes \
-	ac_cv_func_inet_pton=no
+	ac_cv_func_inet_pton=yes
 
 # Marker file to track if configure has been run
 CONFIGURED_MARKER = .nanvix-configured