diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index 00b34cc..b256322 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -13,7 +13,9 @@ jobs:
         submodules: true
 
     - name: Download archives
-      run: ./toolchain-m68k --quiet download
+      run: |
+        git config --global --add safe.directory "$GITHUB_WORKSPACE"
+        ./toolchain-m68k --quiet download
 
     - name: Build toolchain
       run: ./toolchain-m68k --quiet build --prefix=/usr/local
diff --git a/.gitmodules b/.gitmodules
index 6f9f0fb..6395182 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -7,9 +7,6 @@
 [submodule "submodules/sfdc"]
 	path = submodules/sfdc
 	url = https://github.com/adtools/sfdc
-[submodule "submodules/python-lhafile"]
-	path = submodules/python-lhafile
-	url = https://github.com/FrodeSolheim/python-lhafile
 [submodule "submodules/fd2pragma"]
 	path = submodules/fd2pragma
 	url = https://github.com/adtools/fd2pragma.git
@@ -19,6 +16,3 @@
 [submodule "submodules/fs-uae"]
 	path = submodules/fs-uae
 	url = https://github.com/FrodeSolheim/fs-uae.git
-[submodule "submodules/python-amidev"]
-	path = submodules/python-amidev
-	url = https://github.com/cahirwpz/python-amidev.git
diff --git a/Dockerfile b/Dockerfile
index e9fdca8..44c3072 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,5 +12,6 @@ RUN apt-get install -y --no-install-recommends \
             automake bison ca-certificates flex git-core gettext gperf \
             gcc g++ libc6-dev libglib2.0-dev libncurses-dev libpng-dev \
             libsdl2-dev libsdl2-ttf-dev libopenal-dev libtool make patch \
-            pkg-config python3 libpython3-dev python3-setuptools quilt \
-            subversion texinfo zip
+            pkg-config python3 python3-dev python3-pip quilt texinfo zip
+COPY requirements.txt .
+RUN pip3 install setuptools wheel && pip3 install -r requirements.txt
diff --git a/common.py b/common.py
index 2d84a44..5a23b10 100644
--- a/common.py
+++ b/common.py
@@ -7,12 +7,10 @@
 from logging import debug, info, error
 from os import path
 import contextlib
-from distutils import spawn, sysconfig
-import fileinput
+from distutils import spawn
 import os
 from multiprocessing import cpu_count
 import shutil
-import site
 import subprocess
 import sys
 import tarfile
@@ -67,35 +65,6 @@ def panic(*args):
   sys.exit(1)
 
 
-@fill_in_args
-def cmpver(op, v1, v2):
-  assert op in ['eq', 'lt', 'gt']
-
-  v1 = [int(x) for x in v1.split('.')]
-  v2 = [int(x) for x in v2.split('.')]
-
-  def _cmp(l1, l2):
-    if not len(l1) and not len(l2):
-      return 0
-    if not len(l1):
-      return -1
-    if not len(l2):
-      return 1
-
-    if l1[0] < l2[0]:
-      return -1
-    if l1[0] > l2[0]:
-      return 1
-    if l1[0] == l2[0]:
-      return _cmp(l1[1:], l2[1:])
-
-  res = _cmp(v1, v2)
-
-  return ((op == 'eq' and res == 0) or
-          (op == 'lt' and res < 0) or
-          (op == 'gt' and res > 0))
-
-
 @fill_in_args
 def topdir(name):
   if not path.isabs(name):
@@ -299,25 +268,6 @@ def unarc(name):
     raise RuntimeError('Unrecognized archive: "%s"', name)
 
 
-@fill_in_args
-def fix_python_shebang(filename, prefix):
-  PYTHON = fill_in('{python}')
-  SITEDIR = path.join(prefix, '{sitedir}')
-  for line in fileinput.input(files=[filename], inplace=True):
-    line = line.rstrip()
-    if line.startswith('#!'):
-      print('#!/usr/bin/env PYTHONPATH=%s %s' % (SITEDIR, PYTHON))
-    else:
-      print(line.rstrip())
-
-
-@fill_in_args
-def add_site_dir(dirname, py_ver):
-  dirname = path.join(dirname, 'lib', py_ver, 'site-packages')
-  info('adding "%s" to python site dirs', topdir(dirname))
-  site.addsitedir(dirname)
-
-
 @contextlib.contextmanager
 def cwd(name):
   old = os.getcwd()
@@ -374,38 +324,6 @@ def wrapper(*args, **kwargs):
   return real_decorator
 
 
-def extend_pythonpath(prefix):
-  SITEDIR = path.join(prefix, '{sitedir}')
-  try:
-    return ':'.join([os.environ['PYTHONPATH'], SITEDIR])
-  except KeyError:
-    return SITEDIR
-
-
-@recipe('pyinstall', 1)
-def pyinstall(name, **kwargs):
-  prefix = kwargs.get('prefix', '{prefix}')
-  mkdir(path.join(prefix, '{sitedir}'))
-  with env(PYTHONPATH=extend_pythonpath(prefix)):
-    execute('{python}', '-m', 'easy_install', '--prefix=' + prefix, name)
-
-@recipe('pyfixbin', 1)
-def pyfixbin(name, names, **kwargs):
-  prefix = kwargs.get('prefix', '{prefix}')
-  for name in names:
-    fix_python_shebang(path.join(prefix, 'bin', name), prefix)
-
-
-@recipe('pysetup', 1)
-def pysetup(name, **kwargs):
-  prefix = kwargs.get('prefix', '{prefix}')
-  mkdir(path.join(prefix, '{sitedir}'))
-  with env(PYTHONPATH=extend_pythonpath(prefix)):
-    with cwd(path.join('{build}', name)):
-      execute('{python}', 'setup.py', 'build')
-      execute('{python}', 'setup.py', 'install', '--prefix=' + prefix)
-
-
 @recipe('fetch', 1)
 def fetch(name, url):
   if url.startswith('http') or url.startswith('ftp'):
@@ -530,8 +448,7 @@ def require_header(headers, lang='c', errmsg='', symbol=None, value=None):
   panic(errmsg)
 
 
-__all__ = ['setvar', 'panic', 'cmpver', 'find_executable', 'chmod', 'execute',
-           'rmtree', 'mkdir', 'copy', 'copytree', 'unarc', 'fetch', 'cwd',
-           'symlink', 'remove', 'move', 'find', 'textfile', 'env', 'path',
-           'add_site_dir', 'pysetup', 'pyinstall', 'recipe', 'unpack', 'patch',
-           'configure', 'make', 'require_header', 'touch', 'pyfixbin']
+__all__ = ['setvar', 'panic', 'find_executable', 'chmod', 'execute', 'rmtree',
+           'mkdir', 'copy', 'copytree', 'fetch', 'cwd', 'symlink', 'remove',
+           'move', 'find', 'textfile', 'env', 'path', 'recipe', 'unpack',
+           'patch', 'configure', 'make', 'require_header', 'touch']
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..d6d38c1
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+lhafile
diff --git a/submodules/python-amidev b/submodules/python-amidev
deleted file mode 160000
index 6accf46..0000000
--- a/submodules/python-amidev
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 6accf463feb0a5763bf0fb66603f4cc354dd99f4
diff --git a/submodules/python-lhafile b/submodules/python-lhafile
deleted file mode 160000
index 8f800bb..0000000
--- a/submodules/python-lhafile
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 8f800bbcb47431f9ed4d36d847621525217a72d8
diff --git a/toolchain-m68k b/toolchain-m68k
index 4732221..f02661b 100755
--- a/toolchain-m68k
+++ b/toolchain-m68k
@@ -9,8 +9,6 @@ from os import environ
 import argparse
 import logging
 import platform
-import re
-import string
 import sys
 
 environ['DONTWRITEBYTECODE'] = 'y'
@@ -23,14 +21,16 @@ URLS = \
    'https://ftp.gnu.org/gnu/texinfo/texinfo-4.12.tar.gz',
    'https://ftp.gnu.org/gnu/automake/automake-1.15.tar.gz',
    ('https://github.com/askeksa/Shrinkler/archive/refs/tags/v4.7.tar.gz',
-    'shrinkler-4.7.tar.gz'),
+    'Shrinkler-4.7.tar.gz'),
    ('ftp://ftp.uk.freesbie.org/sites/distfiles.gentoo.org/distfiles/' +
     'flex-2.5.4a.tar.gz', 'flex-2.5.4.tar.gz'),
    ('http://hp.alinea-computer.de/AmigaOS/NDK39.lha', 'NDK_3.9.lha'),
-   ('http://server.owl.de/~frank/tags/vasm1_8h.tar.gz', 'vasm.tar.gz')]
+   ('http://phoenix.owl.de/tags/vasm1_9c.tar.gz', 'vasm.tar.gz')]
 
 
-from common import * # NOQA
+from common import (setvar, execute, rmtree, configure, unpack, path, panic,
+        mkdir, env, make, touch, patch, require_header, copy, cwd, recipe,
+        find_executable, textfile, chmod, copytree, move, find, fetch)
 
 
 @recipe('target-prepare')
@@ -147,8 +147,6 @@ def download():
 
 
 def build():
-  py_ver = 'python%d.%d' % (sys.version_info.major, sys.version_info.minor)
-
   for var in list(environ.keys()):
     if var not in ['_', 'LOGNAME', 'HOME', 'SHELL', 'TMPDIR', 'PWD']:
       del environ[var]
@@ -175,12 +173,13 @@ def build():
   environ['LANG'] = 'C'
   environ['TERM'] = 'xterm'
 
-  add_site_dir('{prefix}', py_ver)
-
   CC = find_executable(CC)
   CXX = find_executable(CXX)
   FLAGS = '-s -O2 -pipe'
 
+  if platform.system() == 'Darwin':
+    FLAGS += ' -Wno-unused-command-line-argument'
+
   if getLogger().isEnabledFor(logging.DEBUG):
     FLAGS += ' -Wall'
   else:
@@ -213,14 +212,6 @@ def build():
   require_header(['ncurses.h', 'ncurses/ncurses.h'],
                  lang='c', errmsg='libncurses-dev package missing')
 
-  # require_header([path.join(py_ver, 'Python.h')],
-  #                lang='c', errmsg='python-dev package missing')
-
-  execute('git', 'submodule', 'init', 'submodules/python-lhafile')
-  execute('git', 'submodule', 'update', 'submodules/python-lhafile')
-  unpack('python-lha', work_dir='{build}')
-  pysetup('python-lha')
-
   download()
   execute('quilt', 'push', '-a', ignore_errors=True)
 
@@ -362,9 +353,6 @@ def build():
     make('{fsuae}', parallel=True)
     make('{fsuae}', 'install')
 
-  unpack('python-amidev', work_dir='{build}')
-  pysetup('python-amidev')
-
   unpack('{shrinkler}', work_dir='{build}')
   make('{shrinkler}')
   install_shrinkler()
@@ -403,8 +391,7 @@ if __name__ == "__main__":
                       help='installation directory')
   args = parser.parse_args()
 
-  setvar(top=path.abspath(path.dirname(sys.argv[0])),
-         py_ver='python%d.%d' % (sys.version_info.major, sys.version_info.minor))
+  setvar(top=path.abspath(path.dirname(sys.argv[0])))
 
   setvar(m4='m4-1.4.17',
          gawk='gawk-3.1.8',
@@ -417,10 +404,9 @@ if __name__ == "__main__":
          binutils='binutils-gdb',
          fsuae='fs-uae',
          gcc='gcc-2.95.3',
-         shrinkler='shrinkler-4.7',
+         shrinkler='Shrinkler-4.7',
          target='m68k-amigaos',
          python=sys.executable,
-         sitedir=path.join('lib', '{py_ver}', 'site-packages'),
          patches=path.join('{top}', 'patches'),
          stamps=path.join('{top}', '.build-m68k', 'stamps'),
          build=path.join('{top}', '.build-m68k', 'build'),