diff --git a/debpython/debpython/__init__.py b/debpython/debpython/__init__.py
index fa6b667..b3b63e1 100644
--- a/debpython/debpython/__init__.py
+++ b/debpython/debpython/__init__.py
@@ -8,7 +8,7 @@ from subprocess import PIPE, Popen
 from pickle import dumps
 
 log = logging.getLogger(__name__)
-PUBLIC_DIR_RE = re.compile(r'.*?/usr/lib/python(\d(?:.\d+)?)/(site|dist)-packages')
+PUBLIC_DIR_RE = re.compile(r'.*?@TERMUX_PREFIX@/lib/python(\d(?:.\d+)?)/(site|dist)-packages')
 
 
 class memoize:
diff --git a/debpython/debpython/files.py b/debpython/debpython/files.py
index 39ef978..5899a7a 100644
--- a/debpython/debpython/files.py
+++ b/debpython/debpython/files.py
@@ -48,7 +48,20 @@ def from_package(package_name, extensions=('.py',)):
     extensions = tuple(extensions)  # .endswith doesn't like list
     env = environ.copy()
     env["LC_ALL"] = "C.UTF-8"
-    process = Popen(('/usr/bin/dpkg', '-L', package_name), stdout=PIPE,
+    env["LD_PRELOAD"] = ""
+    process = Popen(['@TERMUX_PREFIX@/bin/bash', '-c',
+        'source @TERMUX_PREFIX_CLASSICAL@/bin/termux-setup-package-manager && echo ${TERMUX_APP_PACKAGE_MANAGER}'],
+        stdout=PIPE)
+    termux_app_package_manager = process.communicate()[0].decode()[0:-1]
+    if termux_app_package_manager == "apt":
+        package_manager = "@TERMUX_PREFIX_CLASSICAL@/bin/dpkg"
+        package_manager_list_argument = "-L"
+    elif termux_app_package_manager == "pacman":
+        package_manager = "@TERMUX_PREFIX_CLASSICAL@/bin/pacman"
+        package_manager_list_argument = "-Qql"
+    else:
+        raise Exception(f"cannot determine system package manager ({termux_app_package_manager})!")
+    process = Popen((package_manager, package_manager_list_argument, package_name), stdout=PIPE,
                          stderr=PIPE, env=env)
     stdout, stderr = process.communicate()
     if process.returncode != 0:
diff --git a/debpython/debpython/interpreter.py b/debpython/debpython/interpreter.py
index 45b14db..6334661 100644
--- a/debpython/debpython/interpreter.py
+++ b/debpython/debpython/interpreter.py
@@ -171,16 +171,16 @@ class Interpreter:
         #if not version:
         #    version = Version(DEFAULT)
         if self.impl == 'pypy':
-            path = '/usr/lib/pypy/dist-packages/'
+            path = '@TERMUX_PREFIX@/lib/pypy/dist-packages/'
         elif version << Version('2.6'):
-            path = "/usr/lib/python%s/site-packages/" % version
+            path = "@TERMUX_PREFIX@/lib/python%s/site-packages/" % version
         elif version << Version('3.0'):
-            path = "/usr/lib/python%s/dist-packages/" % version
+            path = "@TERMUX_PREFIX@/lib/python%s/dist-packages/" % version
         else:
-            path = '/usr/lib/python3/dist-packages/'
+            path = '@TERMUX_PREFIX@/lib/python@TERMUX_PYTHON_VERSION@/site-packages/'
 
         if gdb:
-            path = "/usr/lib/debug%s" % path
+            path = "@TERMUX_PREFIX@/lib/debug%s" % path
         if package:
             path = "debian/%s%s" % (package, path)
 
diff --git a/debpython/debpython/version.py b/debpython/debpython/version.py
index 2d7ed69..f4abf31 100644
--- a/debpython/debpython/version.py
+++ b/debpython/debpython/version.py
@@ -42,13 +42,8 @@ log = logging.getLogger(__name__)
 _supported = environ.get('DEBPYTHON3_SUPPORTED')
 _default = environ.get('DEBPYTHON3_DEFAULT')
 if not _supported or not _default:
-    _config = ConfigParser()
-    _config.read('/usr/share/python3/debian_defaults')
-    if not _default:
-        _default = _config.get('DEFAULT', 'default-version')[6:]
-    if not _supported:
-        _supported = _config.get('DEFAULT', 'supported-versions')\
-            .replace('python', '')
+    _supported = "@TERMUX_PYTHON_VERSION@"
+    _default = _supported
 try:
     DEFAULT = tuple(int(i) for i in _default.split('.'))
 except Exception:
@@ -257,10 +252,10 @@ def get_requested_versions(vrange=None, available=None):
 
     if available:
         versions = set(v for v in versions
-                       if exists("/usr/bin/python%d.%d" % v))
+                       if exists("@TERMUX_PREFIX@/bin/python%d.%d" % v))
     elif available is False:
         versions = set(v for v in versions
-                       if not exists("/usr/bin/python%d.%d" % v))
+                       if not exists("@TERMUX_PREFIX@/bin/python%d.%d" % v))
 
     return versions
 
diff --git a/debpython/py3clean b/debpython/py3clean
index 8e7c3f3..62edeb5 100755
--- a/debpython/py3clean
+++ b/debpython/py3clean
@@ -1,4 +1,4 @@
-#! /usr/bin/python3
+#! @TERMUX_PREFIX@/bin/python@TERMUX_PYTHON_VERSION@
 # vim: et ts=4 sw=4
 
 # Copyright © 2010-2012 Piotr Ożarowski <piotr@debian.org>
@@ -27,7 +27,7 @@ import sys
 from glob import glob
 from os import environ, remove, rmdir
 from os.path import dirname, basename, exists, join, splitext
-sys.path.insert(1, '/usr/share/python3/')
+sys.path.insert(1, '@TERMUX_PREFIX@/lib/python@TERMUX_PYTHON_VERSION@/')
 from debpython import files as dpf
 from debpython.interpreter import Interpreter
 from debpython.version import SUPPORTED, getver, vrepr
@@ -156,13 +156,13 @@ def destroyer(magic_tag=None):  # ;-)
 
 def main():
     usage = '%prog [-V VERSION] [-p PACKAGE] [DIR_OR_FILE]'
-    parser = optparse.OptionParser(usage, version='%prog DEVELV')
+    parser = optparse.OptionParser(usage, version='%prog @TERMUX_PKG_FULLVERSION@')
     parser.add_option('-v', '--verbose', action='store_true', dest='verbose',
                       help='turn verbose mode on')
     parser.add_option('-q', '--quiet', action='store_false', dest='verbose',
                       default=False, help='be quiet')
     parser.add_option('-p', '--package',
-                      help='specify Debian package name to clean')
+                      help='specify Termux package name to clean')
     parser.add_option('-V', dest='version',
                       help='specify Python version to clean')
 
diff --git a/debpython/py3compile b/debpython/py3compile
index 14cbf4e..f2b0fed 100755
--- a/debpython/py3compile
+++ b/debpython/py3compile
@@ -1,4 +1,4 @@
-#! /usr/bin/python3
+#! @TERMUX_PREFIX@/bin/python@TERMUX_PYTHON_VERSION@
 # vim: et ts=4 sw=4
 
 # Copyright © 2010-2012 Piotr Ożarowski <piotr@debian.org>
@@ -30,7 +30,7 @@ import sys
 from os import environ, listdir, mkdir
 from os.path import dirname, exists, isdir, join
 from subprocess import PIPE, Popen
-sys.path.insert(1, '/usr/share/python3/')
+sys.path.insert(1, '@TERMUX_PREFIX@/lib/python@TERMUX_PYTHON_VERSION@/')
 from debpython.version import SUPPORTED, debsorted, vrepr, \
     get_requested_versions, parse_vrange, getver
 from debpython import files as dpf, PUBLIC_DIR_RE, memoize
@@ -56,7 +56,7 @@ Examples:
 
 ### EXCLUDES ###################################################
 @memoize
-def get_exclude_patterns_from_dir(name='/usr/share/python3/bcep/'):
+def get_exclude_patterns_from_dir(name='@TERMUX_PREFIX@/share/python3/bcep/'):
     """Return patterns for files that shouldn't be bytecompiled."""
     if not isdir(name):
         return []
@@ -156,7 +156,7 @@ def filter_files(files, e_patterns, compile_versions):
 def py_compile(version, optimize, workers):
     if not isinstance(version, str):
         version = vrepr(version)
-    cmd = ["/usr/bin/python" + version]
+    cmd = ["@TERMUX_PREFIX@/bin/python" + version]
     if optimize:
         cmd.append("-O")
     cmd += ["-m", "py_compile",  "-"]
@@ -224,7 +224,7 @@ def compile(files, versions, force, optimize, e_patterns=None):
 def main():
     usage = '%prog [-V [X.Y][-][A.B]] DIR_OR_FILE [-X REGEXPR]\n' +\
         '       %prog -p PACKAGE'
-    parser = optparse.OptionParser(usage, version='%prog DEVELV',
+    parser = optparse.OptionParser(usage, version='%prog @TERMUX_PKG_FULLVERSION@',
                                    option_class=Option)
     parser.add_option('-v', '--verbose', action='store_true', dest='verbose',
                       help='turn verbose mode on')
@@ -236,7 +236,7 @@ def main():
     parser.add_option('-O', action='store_true', dest='optimize',
                       default=False, help="byte-compile to .pyo files")
     parser.add_option('-p', '--package',
-                      help='specify Debian package name whose files should be bytecompiled')
+                      help='specify Termux package name whose files should be bytecompiled')
     parser.add_option('-V', type='version_range', dest='vrange',
                       help="""force private modules to be bytecompiled
 with Python version from given range, regardless of the default Python version
@@ -262,12 +262,12 @@ You may use this option multiple times to build up a list of things to exclude.'
 
     if options.regexpr and not args:
         parser.error('--exclude option works with private directories '
-                     'only, please use /usr/share/python3/bcep to specify '
+                     'only, please use @TERMUX_PREFIX@/share/python3/bcep to specify '
                      'public modules to skip')
 
     if options.vrange and options.vrange[0] == options.vrange[1] and\
             options.vrange != (None, None) and\
-            exists("/usr/bin/python%d.%d" % options.vrange[0]):
+            exists("@TERMUX_PREFIX@/bin/python%d.%d" % options.vrange[0]):
         # specific version requested, use it even if it's not in SUPPORTED
         versions = {options.vrange[0]}
     else: