odoo v14 and issues with requirements.txt

when you install odoo requirements.txt, you may get error as below

    UnicodeDecodeError: 'charmap' codec can't decode byte 0x9d in position 967: character maps to <undefined>
    ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/89/ad/9388970542f82857ac2958b3eaddfad16caaf967cf8532e9486dedc69420/python-stdnum-1.8.tar.gz#sha256=3f42639cae75c0f6ba734eaa7391d411b7fdef868873503f7d2b2962fc3d71bd (from https://pypi.org/simple/python-stdnum/). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
ERROR: Could not find a version that satisfies the requirement python-stdnum==1.8 (from versions: 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.8.1, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.8.1, 1.9, 1.10, 1.11, 1.12, 1.13, 1.14, 1.15, 1.16, 1.17, 1.18, 1.19, 1.20)
ERROR: No matching distribution found for python-stdnum==1.8

the solution is change the versions of stdnum and psutil as below

python-stdnum==1.8.1
psutil==5.6.7

another error could be

    import passlib.utils
  File "C:\Python3810\lib\site-packages\passlib\utils\__init__.py", line 845, in <module>
    from time import clock as timer
ImportError: cannot import name 'clock' from 'time' (unknown location)

so the solution is

change

passlib==1.7.2

you may get another error as

"AttributeError: module 'lxml.html.clean' has no attribute 'defs'"

and the solution is

pip uninstall lxml
pip install lxml==4.8.0

the final working requirements.txt for odoo v14 is

Babel==2.6.0; python_version <= '3.9'
Babel==2.9.1; python_version > '3.9'  # (Jammy) 2.6.0 has issues with python 3.10
chardet==3.0.4
decorator==4.3.0
docutils==0.14
ebaysdk==2.1.5
freezegun==0.3.11; python_version < '3.8'
freezegun==0.3.15; python_version >= '3.8'
gevent==1.1.2 ; sys_platform != 'win32' and python_version < '3.7'
gevent==1.4.0 ; sys_platform == 'win32' and python_version < '3.7'
gevent==1.5.0 ; python_version == '3.7'
gevent==20.9.0 ; python_version > '3.7' and python_version <= '3.9'
gevent==21.8.0 ; python_version > '3.9'  # (Jammy)
greenlet==0.4.10 ; python_version < '3.7'
greenlet==0.4.15 ; python_version == '3.7'
greenlet==0.4.17 ; python_version > '3.7' and python_version <= '3.9'
greenlet==1.1.2 ; python_version  > '3.9'  # (Jammy)
idna==2.6
Jinja2==2.10.1; python_version < '3.8'
# bullseye version, focal patched 2.10
Jinja2==2.11.2; python_version >= '3.8'
libsass==0.17.0
lxml==4.8.0
Mako==1.0.7
MarkupSafe==1.1.0
num2words==0.5.6
ofxparse==0.19; python_version <= '3.9'
ofxparse==0.21; python_version > '3.9'  # (Jammy) ABC removed from collections in 3.10 but still used in ofxparse < 0.21
passlib==1.7.2
Pillow==5.4.1 ; python_version <= '3.7' and sys_platform != 'win32'
Pillow==6.1.0 ; python_version <= '3.7' and sys_platform == 'win32'
Pillow==8.1.1 ; python_version > '3.7'
polib==1.1.0
psutil==5.6.7
psycopg2==2.7.7; sys_platform != 'win32' and python_version < '3.8'
psycopg2==2.8.5; sys_platform == 'win32' or python_version >= '3.8'
pydot==1.4.1
python-ldap==3.1.0; sys_platform != 'win32'
PyPDF2==1.26.0
pyserial==3.4
python-dateutil==2.7.3
pytz==2019.1
pyusb==1.0.2
qrcode==6.1
reportlab==3.5.13; python_version < '3.8'
reportlab==3.5.55; python_version >= '3.8'
requests==2.21.0; python_version <= '3.9'
requests==2.25.1; python_version > '3.9'  # (Jammy) versions < 2.25 aren't compatible w/ urllib3 1.26. Bullseye = 2.25.1. min version = 2.22.0 (Focal)
urllib3==1.26.5; python_version > '3.9'  # (Jammy) indirect / min version = 1.25.8 (Focal with security backports)
zeep==3.2.0
python-stdnum==1.8.1
vobject==0.9.6.1
Werkzeug==0.16.1 ; python_version <= '3.9'
Werkzeug==2.0.2 ; python_version > '3.9'  # (Jammy)
XlsxWriter==1.1.2
xlwt==1.3.*
xlrd==1.1.0; python_version < '3.8'
xlrd==1.2.0; python_version >= '3.8'
pypiwin32 ; sys_platform == 'win32'