diff --git a/internal_filesystem/lib/README.md b/internal_filesystem/lib/README.md
index c1de9157..a7f1b471 100644
--- a/internal_filesystem/lib/README.md
+++ b/internal_filesystem/lib/README.md
@@ -1,10 +1,11 @@
 This /lib folder contains:
 - mip.install('github:jonnor/micropython-zipfile')
-- mip.install("shutil") for shutil.rmtree('/apps/com.example.files') # for rmtree()
 - mip.install("aiohttp") # easy websockets
-- mip.install("base64") # for nostr etc
 - mip.install("collections") # used by aiohttp
 - mip.install("unittest")
-- mip.install("logging")
 - mip.install("aiorepl")
 
+- https://github.com/micropython/micropython-lib/blob/master/python-stdlib/logging/logging.py version 0.6.2 # for About app
+- https://github.com/micropython/micropython-lib/blob/master/python-stdlib/base64/base64.py version 3.3.6 # for nostr
+- https://github.com/micropython/micropython-lib/blob/master/python-stdlib/binascii/binascii.py version 2.4.1 # for base64.py
+- https://github.com/micropython/micropython-lib/blob/master/python-stdlib/shutil/shutil.py version 0.0.5 # for rmtree()
diff --git a/internal_filesystem/lib/base64.mpy b/internal_filesystem/lib/base64.mpy
deleted file mode 100644
index fc7fa053..00000000
Binary files a/internal_filesystem/lib/base64.mpy and /dev/null differ
diff --git a/internal_filesystem/lib/base64.py b/internal_filesystem/lib/base64.py
new file mode 100644
index 00000000..d6baca05
--- /dev/null
+++ b/internal_filesystem/lib/base64.py
@@ -0,0 +1,480 @@
+#! /usr/bin/env python3
+
+"""RFC 3548: Base16, Base32, Base64 Data Encodings"""
+
+# Modified 04-Oct-1995 by Jack Jansen to use binascii module
+# Modified 30-Dec-2003 by Barry Warsaw to add full RFC 3548 support
+# Modified 22-May-2007 by Guido van Rossum to use bytes everywhere
+
+import re
+import struct
+import binascii
+
+
+__all__ = [
+    # Legacy interface exports traditional RFC 1521 Base64 encodings
+    "encode",
+    "decode",
+    "encodebytes",
+    "decodebytes",
+    # Generalized interface for other encodings
+    "b64encode",
+    "b64decode",
+    "b32encode",
+    "b32decode",
+    "b16encode",
+    "b16decode",
+    # Standard Base64 encoding
+    "standard_b64encode",
+    "standard_b64decode",
+    # Some common Base64 alternatives.  As referenced by RFC 3458, see thread
+    # starting at:
+    #
+    # http://zgp.org/pipermail/p2p-hackers/2001-September/000316.html
+    "urlsafe_b64encode",
+    "urlsafe_b64decode",
+]
+
+
+bytes_types = (bytes, bytearray)  # Types acceptable as binary data
+
+
+def _bytes_from_decode_data(s):
+    if isinstance(s, str):
+        try:
+            return s.encode("ascii")
+        #        except UnicodeEncodeError:
+        except:
+            raise ValueError("string argument should contain only ASCII characters")
+    elif isinstance(s, bytes_types):
+        return s
+    else:
+        raise TypeError("argument should be bytes or ASCII string, not %s" % s.__class__.__name__)
+
+
+def _maketrans(f, t):
+    """Re-implement bytes.maketrans() as there is no such function in micropython"""
+    if len(f) != len(t):
+        raise ValueError("maketrans arguments must have same length")
+    translation_table = dict(zip(f, t))
+    return translation_table
+
+
+def _translate(input_bytes, trans_table):
+    """Re-implement bytes.translate() as there is no such function in micropython"""
+    result = bytearray()
+
+    for byte in input_bytes:
+        translated_byte = trans_table.get(byte, byte)
+        result.append(translated_byte)
+
+    return bytes(result)
+
+
+# Base64 encoding/decoding uses binascii
+
+
+def b64encode(s, altchars=None):
+    """Encode a byte string using Base64.
+
+    s is the byte string to encode.  Optional altchars must be a byte
+    string of length 2 which specifies an alternative alphabet for the
+    '+' and '/' characters.  This allows an application to
+    e.g. generate url or filesystem safe Base64 strings.
+
+    The encoded byte string is returned.
+    """
+    if not isinstance(s, bytes_types):
+        raise TypeError("expected bytes, not %s" % s.__class__.__name__)
+    # Strip off the trailing newline
+    encoded = binascii.b2a_base64(s)[:-1]
+    if altchars is not None:
+        if not isinstance(altchars, bytes_types):
+            raise TypeError("expected bytes, not %s" % altchars.__class__.__name__)
+        assert len(altchars) == 2, repr(altchars)
+        encoded = _translate(encoded, _maketrans(b"+/", altchars))
+    return encoded
+
+
+def b64decode(s, altchars=None, validate=False):
+    """Decode a Base64 encoded byte string.
+
+    s is the byte string to decode.  Optional altchars must be a
+    string of length 2 which specifies the alternative alphabet used
+    instead of the '+' and '/' characters.
+
+    The decoded string is returned.  A binascii.Error is raised if s is
+    incorrectly padded.
+
+    If validate is False (the default), non-base64-alphabet characters are
+    discarded prior to the padding check.  If validate is True,
+    non-base64-alphabet characters in the input result in a binascii.Error.
+    """
+    s = _bytes_from_decode_data(s)
+    if altchars is not None:
+        altchars = _bytes_from_decode_data(altchars)
+        assert len(altchars) == 2, repr(altchars)
+        s = _translate(s, _maketrans(altchars, b"+/"))
+    if validate and not re.match(b"^[A-Za-z0-9+/]*=*$", s):
+        raise binascii.Error("Non-base64 digit found")
+    return binascii.a2b_base64(s)
+
+
+def standard_b64encode(s):
+    """Encode a byte string using the standard Base64 alphabet.
+
+    s is the byte string to encode.  The encoded byte string is returned.
+    """
+    return b64encode(s)
+
+
+def standard_b64decode(s):
+    """Decode a byte string encoded with the standard Base64 alphabet.
+
+    s is the byte string to decode.  The decoded byte string is
+    returned.  binascii.Error is raised if the input is incorrectly
+    padded or if there are non-alphabet characters present in the
+    input.
+    """
+    return b64decode(s)
+
+
+# _urlsafe_encode_translation = _maketrans(b'+/', b'-_')
+# _urlsafe_decode_translation = _maketrans(b'-_', b'+/')
+
+
+def urlsafe_b64encode(s):
+    """Encode a byte string using a url-safe Base64 alphabet.
+
+    s is the byte string to encode.  The encoded byte string is
+    returned.  The alphabet uses '-' instead of '+' and '_' instead of
+    '/'.
+    """
+    #    return b64encode(s).translate(_urlsafe_encode_translation)
+    return b64encode(s, b"-_").rstrip(b"\n")
+
+
+def urlsafe_b64decode(s):
+    """Decode a byte string encoded with the standard Base64 alphabet.
+
+    s is the byte string to decode.  The decoded byte string is
+    returned.  binascii.Error is raised if the input is incorrectly
+    padded or if there are non-alphabet characters present in the
+    input.
+
+    The alphabet uses '-' instead of '+' and '_' instead of '/'.
+    """
+    #    s = _bytes_from_decode_data(s)
+    #    s = s.translate(_urlsafe_decode_translation)
+    #    return b64decode(s)
+    raise NotImplementedError()
+
+
+# Base32 encoding/decoding must be done in Python
+_b32alphabet = {
+    0: b"A",
+    9: b"J",
+    18: b"S",
+    27: b"3",
+    1: b"B",
+    10: b"K",
+    19: b"T",
+    28: b"4",
+    2: b"C",
+    11: b"L",
+    20: b"U",
+    29: b"5",
+    3: b"D",
+    12: b"M",
+    21: b"V",
+    30: b"6",
+    4: b"E",
+    13: b"N",
+    22: b"W",
+    31: b"7",
+    5: b"F",
+    14: b"O",
+    23: b"X",
+    6: b"G",
+    15: b"P",
+    24: b"Y",
+    7: b"H",
+    16: b"Q",
+    25: b"Z",
+    8: b"I",
+    17: b"R",
+    26: b"2",
+}
+
+_b32tab = [v[0] for k, v in sorted(_b32alphabet.items())]
+_b32rev = dict([(v[0], k) for k, v in _b32alphabet.items()])
+
+
+def b32encode(s):
+    """Encode a byte string using Base32.
+
+    s is the byte string to encode.  The encoded byte string is returned.
+    """
+    if not isinstance(s, bytes_types):
+        raise TypeError("expected bytes, not %s" % s.__class__.__name__)
+    quanta, leftover = divmod(len(s), 5)
+    # Pad the last quantum with zero bits if necessary
+    if leftover:
+        s = s + bytes(5 - leftover)  # Don't use += !
+        quanta += 1
+    encoded = bytearray()
+    for i in range(quanta):
+        # c1 and c2 are 16 bits wide, c3 is 8 bits wide.  The intent of this
+        # code is to process the 40 bits in units of 5 bits.  So we take the 1
+        # leftover bit of c1 and tack it onto c2.  Then we take the 2 leftover
+        # bits of c2 and tack them onto c3.  The shifts and masks are intended
+        # to give us values of exactly 5 bits in width.
+        c1, c2, c3 = struct.unpack("!HHB", s[i * 5 : (i + 1) * 5])
+        c2 += (c1 & 1) << 16  # 17 bits wide
+        c3 += (c2 & 3) << 8  # 10 bits wide
+        encoded += bytes(
+            [
+                _b32tab[c1 >> 11],  # bits 1 - 5
+                _b32tab[(c1 >> 6) & 0x1F],  # bits 6 - 10
+                _b32tab[(c1 >> 1) & 0x1F],  # bits 11 - 15
+                _b32tab[c2 >> 12],  # bits 16 - 20 (1 - 5)
+                _b32tab[(c2 >> 7) & 0x1F],  # bits 21 - 25 (6 - 10)
+                _b32tab[(c2 >> 2) & 0x1F],  # bits 26 - 30 (11 - 15)
+                _b32tab[c3 >> 5],  # bits 31 - 35 (1 - 5)
+                _b32tab[c3 & 0x1F],  # bits 36 - 40 (1 - 5)
+            ]
+        )
+    # Adjust for any leftover partial quanta
+    if leftover == 1:
+        encoded = encoded[:-6] + b"======"
+    elif leftover == 2:
+        encoded = encoded[:-4] + b"===="
+    elif leftover == 3:
+        encoded = encoded[:-3] + b"==="
+    elif leftover == 4:
+        encoded = encoded[:-1] + b"="
+    return bytes(encoded)
+
+
+def b32decode(s, casefold=False, map01=None):
+    """Decode a Base32 encoded byte string.
+
+    s is the byte string to decode.  Optional casefold is a flag
+    specifying whether a lowercase alphabet is acceptable as input.
+    For security purposes, the default is False.
+
+    RFC 3548 allows for optional mapping of the digit 0 (zero) to the
+    letter O (oh), and for optional mapping of the digit 1 (one) to
+    either the letter I (eye) or letter L (el).  The optional argument
+    map01 when not None, specifies which letter the digit 1 should be
+    mapped to (when map01 is not None, the digit 0 is always mapped to
+    the letter O).  For security purposes the default is None, so that
+    0 and 1 are not allowed in the input.
+
+    The decoded byte string is returned.  binascii.Error is raised if
+    the input is incorrectly padded or if there are non-alphabet
+    characters present in the input.
+    """
+    s = _bytes_from_decode_data(s)
+    quanta, leftover = divmod(len(s), 8)
+    if leftover:
+        raise binascii.Error("Incorrect padding")
+    # Handle section 2.4 zero and one mapping.  The flag map01 will be either
+    # False, or the character to map the digit 1 (one) to.  It should be
+    # either L (el) or I (eye).
+    if map01 is not None:
+        map01 = _bytes_from_decode_data(map01)
+        assert len(map01) == 1, repr(map01)
+        s = _translate(s, _maketrans(b"01", b"O" + map01))
+    if casefold:
+        s = s.upper()
+    # Strip off pad characters from the right.  We need to count the pad
+    # characters because this will tell us how many null bytes to remove from
+    # the end of the decoded string.
+    padchars = s.find(b"=")
+    if padchars > 0:
+        padchars = len(s) - padchars
+        s = s[:-padchars]
+    else:
+        padchars = 0
+
+    # Now decode the full quanta
+    parts = []
+    acc = 0
+    shift = 35
+    for c in s:
+        val = _b32rev.get(c)
+        if val is None:
+            raise binascii.Error("Non-base32 digit found")
+        acc += _b32rev[c] << shift
+        shift -= 5
+        if shift < 0:
+            parts.append(binascii.unhexlify(bytes("%010x" % acc, "ascii")))
+            acc = 0
+            shift = 35
+    # Process the last, partial quanta
+    last = binascii.unhexlify(bytes("%010x" % acc, "ascii"))
+    if padchars == 0:
+        last = b""  # No characters
+    elif padchars == 1:
+        last = last[:-1]
+    elif padchars == 3:
+        last = last[:-2]
+    elif padchars == 4:
+        last = last[:-3]
+    elif padchars == 6:
+        last = last[:-4]
+    else:
+        raise binascii.Error("Incorrect padding")
+    parts.append(last)
+    return b"".join(parts)
+
+
+# RFC 3548, Base 16 Alphabet specifies uppercase, but hexlify() returns
+# lowercase.  The RFC also recommends against accepting input case
+# insensitively.
+def b16encode(s):
+    """Encode a byte string using Base16.
+
+    s is the byte string to encode.  The encoded byte string is returned.
+    """
+    if not isinstance(s, bytes_types):
+        raise TypeError("expected bytes, not %s" % s.__class__.__name__)
+    return binascii.hexlify(s).upper()
+
+
+def b16decode(s, casefold=False):
+    """Decode a Base16 encoded byte string.
+
+    s is the byte string to decode.  Optional casefold is a flag
+    specifying whether a lowercase alphabet is acceptable as input.
+    For security purposes, the default is False.
+
+    The decoded byte string is returned.  binascii.Error is raised if
+    s were incorrectly padded or if there are non-alphabet characters
+    present in the string.
+    """
+    s = _bytes_from_decode_data(s)
+    if casefold:
+        s = s.upper()
+    if re.search(b"[^0-9A-F]", s):
+        raise binascii.Error("Non-base16 digit found")
+    return binascii.unhexlify(s)
+
+
+# Legacy interface.  This code could be cleaned up since I don't believe
+# binascii has any line length limitations.  It just doesn't seem worth it
+# though.  The files should be opened in binary mode.
+
+MAXLINESIZE = 76  # Excluding the CRLF
+MAXBINSIZE = (MAXLINESIZE // 4) * 3
+
+
+def encode(input, output):
+    """Encode a file; input and output are binary files."""
+    while True:
+        s = input.read(MAXBINSIZE)
+        if not s:
+            break
+        while len(s) < MAXBINSIZE:
+            ns = input.read(MAXBINSIZE - len(s))
+            if not ns:
+                break
+            s += ns
+        line = binascii.b2a_base64(s)
+        output.write(line)
+
+
+def decode(input, output):
+    """Decode a file; input and output are binary files."""
+    while True:
+        line = input.readline()
+        if not line:
+            break
+        s = binascii.a2b_base64(line)
+        output.write(s)
+
+
+def encodebytes(s):
+    """Encode a bytestring into a bytestring containing multiple lines
+    of base-64 data."""
+    if not isinstance(s, bytes_types):
+        raise TypeError("expected bytes, not %s" % s.__class__.__name__)
+    pieces = []
+    for i in range(0, len(s), MAXBINSIZE):
+        chunk = s[i : i + MAXBINSIZE]
+        pieces.append(binascii.b2a_base64(chunk))
+    return b"".join(pieces)
+
+
+def encodestring(s):
+    """Legacy alias of encodebytes()."""
+    import warnings
+
+    warnings.warn("encodestring() is a deprecated alias, use encodebytes()", DeprecationWarning, 2)
+    return encodebytes(s)
+
+
+def decodebytes(s):
+    """Decode a bytestring of base-64 data into a bytestring."""
+    if not isinstance(s, bytes_types):
+        raise TypeError("expected bytes, not %s" % s.__class__.__name__)
+    return binascii.a2b_base64(s)
+
+
+def decodestring(s):
+    """Legacy alias of decodebytes()."""
+    import warnings
+
+    warnings.warn("decodestring() is a deprecated alias, use decodebytes()", DeprecationWarning, 2)
+    return decodebytes(s)
+
+
+# Usable as a script...
+def main():
+    """Small main program"""
+    import sys, getopt
+
+    try:
+        opts, args = getopt.getopt(sys.argv[1:], "deut")
+    except getopt.error as msg:
+        sys.stdout = sys.stderr
+        print(msg)
+        print(
+            """usage: %s [-d|-e|-u|-t] [file|-]
+        -d, -u: decode
+        -e: encode (default)
+        -t: encode and decode string 'Aladdin:open sesame'"""
+            % sys.argv[0]
+        )
+        sys.exit(2)
+    func = encode
+    for o, a in opts:
+        if o == "-e":
+            func = encode
+        if o == "-d":
+            func = decode
+        if o == "-u":
+            func = decode
+        if o == "-t":
+            test()
+            return
+    if args and args[0] != "-":
+        with open(args[0], "rb") as f:
+            func(f, sys.stdout.buffer)
+    else:
+        func(sys.stdin.buffer, sys.stdout.buffer)
+
+
+def test():
+    s0 = b"Aladdin:open sesame"
+    print(repr(s0))
+    s1 = encodebytes(s0)
+    print(repr(s1))
+    s2 = decodebytes(s1)
+    print(repr(s2))
+    assert s0 == s2
+
+
+if __name__ == "__main__":
+    main()
diff --git a/internal_filesystem/lib/binascii.mpy b/internal_filesystem/lib/binascii.mpy
deleted file mode 100644
index e7f55600..00000000
Binary files a/internal_filesystem/lib/binascii.mpy and /dev/null differ
diff --git a/internal_filesystem/lib/binascii.py b/internal_filesystem/lib/binascii.py
new file mode 100644
index 00000000..f2ec39e8
--- /dev/null
+++ b/internal_filesystem/lib/binascii.py
@@ -0,0 +1,362 @@
+from ubinascii import *
+
+if not "unhexlify" in globals():
+
+    def unhexlify(data):
+        if len(data) % 2 != 0:
+            raise ValueError("Odd-length string")
+
+        return bytes([int(data[i : i + 2], 16) for i in range(0, len(data), 2)])
+
+
+b2a_hex = hexlify
+a2b_hex = unhexlify
+
+# ____________________________________________________________
+
+PAD = "="
+
+table_a2b_base64 = [
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    62,
+    -1,
+    -1,
+    -1,
+    63,
+    52,
+    53,
+    54,
+    55,
+    56,
+    57,
+    58,
+    59,
+    60,
+    61,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,  # Note PAD->-1 here
+    -1,
+    0,
+    1,
+    2,
+    3,
+    4,
+    5,
+    6,
+    7,
+    8,
+    9,
+    10,
+    11,
+    12,
+    13,
+    14,
+    15,
+    16,
+    17,
+    18,
+    19,
+    20,
+    21,
+    22,
+    23,
+    24,
+    25,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    26,
+    27,
+    28,
+    29,
+    30,
+    31,
+    32,
+    33,
+    34,
+    35,
+    36,
+    37,
+    38,
+    39,
+    40,
+    41,
+    42,
+    43,
+    44,
+    45,
+    46,
+    47,
+    48,
+    49,
+    50,
+    51,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+    -1,
+]
+
+
+def _transform(n):
+    if n == -1:
+        return "\xff"
+    else:
+        return chr(n)
+
+
+table_a2b_base64 = "".join(map(_transform, table_a2b_base64))
+assert len(table_a2b_base64) == 256
+
+
+def a2b_base64(ascii):
+    "Decode a line of base64 data."
+
+    res = []
+    quad_pos = 0
+    leftchar = 0
+    leftbits = 0
+    last_char_was_a_pad = False
+
+    for c in ascii:
+        c = chr(c)
+        if c == PAD:
+            if quad_pos > 2 or (quad_pos == 2 and last_char_was_a_pad):
+                break  # stop on 'xxx=' or on 'xx=='
+            last_char_was_a_pad = True
+        else:
+            n = ord(table_a2b_base64[ord(c)])
+            if n == 0xFF:
+                continue  # ignore strange characters
+            #
+            # Shift it in on the low end, and see if there's
+            # a byte ready for output.
+            quad_pos = (quad_pos + 1) & 3
+            leftchar = (leftchar << 6) | n
+            leftbits += 6
+            #
+            if leftbits >= 8:
+                leftbits -= 8
+                res.append((leftchar >> leftbits).to_bytes(1, "big"))
+                leftchar &= (1 << leftbits) - 1
+            #
+            last_char_was_a_pad = False
+    else:
+        if leftbits != 0:
+            raise Exception("Incorrect padding")
+
+    return b"".join(res)
+
+
+# ____________________________________________________________
+
+table_b2a_base64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
+
+
+def b2a_base64(bin, newline=True):
+    "Base64-code line of data."
+
+    newlength = (len(bin) + 2) // 3
+    newlength = newlength * 4 + 1
+    res = []
+
+    leftchar = 0
+    leftbits = 0
+    for c in bin:
+        # Shift into our buffer, and output any 6bits ready
+        leftchar = (leftchar << 8) | c
+        leftbits += 8
+        res.append(table_b2a_base64[(leftchar >> (leftbits - 6)) & 0x3F])
+        leftbits -= 6
+        if leftbits >= 6:
+            res.append(table_b2a_base64[(leftchar >> (leftbits - 6)) & 0x3F])
+            leftbits -= 6
+    #
+    if leftbits == 2:
+        res.append(table_b2a_base64[(leftchar & 3) << 4])
+        res.append(PAD)
+        res.append(PAD)
+    elif leftbits == 4:
+        res.append(table_b2a_base64[(leftchar & 0xF) << 2])
+        res.append(PAD)
+    if newline:
+        res.append("\n")
+    return "".join(res).encode("ascii")
diff --git a/internal_filesystem/lib/shutil.mpy b/internal_filesystem/lib/shutil.mpy
deleted file mode 100644
index b87577e7..00000000
Binary files a/internal_filesystem/lib/shutil.mpy and /dev/null differ
diff --git a/internal_filesystem/lib/shutil.py b/internal_filesystem/lib/shutil.py
new file mode 100644
index 00000000..9e72c8ea
--- /dev/null
+++ b/internal_filesystem/lib/shutil.py
@@ -0,0 +1,48 @@
+# Reimplement, because CPython3.3 impl is rather bloated
+import os
+from collections import namedtuple
+
+_ntuple_diskusage = namedtuple("usage", ("total", "used", "free"))
+
+
+def rmtree(d):
+    if not d:
+        raise ValueError
+
+    for name, type, *_ in os.ilistdir(d):
+        path = d + "/" + name
+        if type & 0x4000:  # dir
+            rmtree(path)
+        else:  # file
+            os.unlink(path)
+    os.rmdir(d)
+
+
+def copyfileobj(src, dest, length=512):
+    if hasattr(src, "readinto"):
+        buf = bytearray(length)
+        while True:
+            sz = src.readinto(buf)
+            if not sz:
+                break
+            if sz == length:
+                dest.write(buf)
+            else:
+                b = memoryview(buf)[:sz]
+                dest.write(b)
+    else:
+        while True:
+            buf = src.read(length)
+            if not buf:
+                break
+            dest.write(buf)
+
+
+def disk_usage(path):
+    bit_tuple = os.statvfs(path)
+    blksize = bit_tuple[0]  # system block size
+    total = bit_tuple[2] * blksize
+    free = bit_tuple[3] * blksize
+    used = total - free
+
+    return _ntuple_diskusage(total, used, free)