Help with installation issues

[yucale830]

Environment: Ubuntu 20.04

When I was installing using the official installation documentation（https://opendatacube.readthedocs.io/en/latest/installation/setup/ubuntu.html）, I found it difficult to initialize and it kept reporting errors.

• This is the error message during the integration test phase when downloading and installing the complete repository based on the official documentation：
  The log export is in the attachment, named 11.txt.

11.txt

• This only use pip install datacube：

(odcenv) cc@ubuntu:~/Desktop/ODC/datacube-core$ datacube system init Traceback (most recent call last): File "/home/cc/miniconda3/envs/odcenv/bin/datacube", line 8, in <module> sys.exit(cli()) ~~~^^ File "/home/cc/miniconda3/envs/odcenv/lib/python3.13/site-packages/click/core.py", line 1442, in __call__ return self.main(*args, **kwargs) ~~~~~~~~~^^^^^^^^^^^^^^^^^ File "/home/cc/miniconda3/envs/odcenv/lib/python3.13/site-packages/click/core.py", line 1363, in main rv = self.invoke(ctx) File "/home/cc/miniconda3/envs/odcenv/lib/python3.13/site-packages/click/core.py", line 1830, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^ File "/home/cc/miniconda3/envs/odcenv/lib/python3.13/site-packages/click/core.py", line 1830, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^ File "/home/cc/miniconda3/envs/odcenv/lib/python3.13/site-packages/click/core.py", line 1226, in invoke return ctx.invoke(self.callback, **ctx.params) ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/cc/miniconda3/envs/odcenv/lib/python3.13/site-packages/click/core.py", line 794, in invoke return callback(*args, **kwargs) File "/home/cc/Desktop/ODC/datacube-core/datacube/ui/click.py", line 267, in new_func return f(cfg_env, *args, **kwargs) File "/home/cc/Desktop/ODC/datacube-core/datacube/ui/click.py", line 288, in with_index index = index_connect( config_env, application_name=app_name or command_path, validate_connection=expect_initialised, ) File "/home/cc/Desktop/ODC/datacube-core/datacube/index/_api.py", line 43, in index_connect return index_driver.connect_to_index( ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^ config_env, ^^^^^^^^^^^ application_name=application_name, ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ validate_connection=validate_connection, ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ) ^ File "/home/cc/Desktop/ODC/datacube-core/datacube/index/abstract/_index.py", line 407, in connect_to_index return cls.index_class().from_config( ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^ config_env, application_name, validate_connection ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ) ^ File "/home/cc/Desktop/ODC/datacube-core/datacube/index/postgis/index.py", line 135, in from_config db = PostGisDb.from_config( config_env, application_name=application_name, validate_connection=validate_connection, ) File "/home/cc/Desktop/ODC/datacube-core/datacube/drivers/postgis/_connections.py", line 81, in from_config return PostGisDb.create( ~~~~~~~~~~~~~~~~^ config_env, application_name=app_name, validate=validate_connection ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ) ^ File "/home/cc/Desktop/ODC/datacube-core/datacube/drivers/postgis/_connections.py", line 93, in create engine = cls._create_engine( url, ...<3 lines>... config_env.db_connection_timeout, ) File "/home/cc/Desktop/ODC/datacube-core/datacube/drivers/postgis/_connections.py", line 126, in _create_engine engine = create_engine( url, ...<11 lines>... plugins=["geoalchemy2"], ) File "<string>", line 2, in create_engine File "/home/cc/miniconda3/envs/odcenv/lib/python3.13/site-packages/sqlalchemy/util/deprecations.py", line 281, in warned return fn(*args, **kwargs) # type: ignore[no-any-return] File "/home/cc/miniconda3/envs/odcenv/lib/python3.13/site-packages/sqlalchemy/engine/create.py", line 617, in create_engine dbapi = dbapi_meth(**dbapi_args) File "/home/cc/miniconda3/envs/odcenv/lib/python3.13/site-packages/sqlalchemy/dialects/postgresql/psycopg2.py", line 696, in import_dbapi import psycopg2 File "/home/cc/miniconda3/envs/odcenv/lib/python3.13/site-packages/psycopg2/__init__.py", line 51, in <module> from psycopg2._psycopg import ( # noqa ...<10 lines>... ) ImportError: /lib/x86_64-linux-gnu/libp11-kit.so.0: undefined symbol: ffi_type_pointer, version LIBFFI_BASE_7.0

[yucale830]

(odcenv) cc@ubuntu:~/Desktop/ODC/datacube-core$ pip list
Package Version Editable project location

---

affine 2.4.0
alembic 1.16.4
antimeridian 0.4.3
anyio 4.10.0
argon2-cffi 25.1.0
argon2-cffi-bindings 25.1.0
arrow 1.3.0
astroid 3.3.11
asttokens 3.0.0
async-lru 2.0.5
attrs 25.3.0
babel 2.17.0
beautifulsoup4 4.13.5
bleach 6.2.0
boto3 1.40.18
boto3-stubs 1.40.18
botocore 1.40.18
botocore-stubs 1.38.46
cachetools 6.2.0
certifi 2025.8.3
cffi 1.17.1
cftime 1.6.4.post1
charset-normalizer 3.4.3
click 8.2.1
click-plugins 1.1.1.2
cligj 0.7.2
cloudpickle 3.1.1
comm 0.2.3
contourpy 1.3.3
coverage 7.10.5
cryptography 45.0.6
cycler 0.12.1
dask 2025.7.0
datacube 1.9.9.dev26+g8352f0ab2 /home/cc/Desktop/ODC/datacube-core
debugpy 1.8.16
decorator 5.2.1
defusedxml 0.7.1
deprecat 2.1.3
dill 0.4.0
distributed 2025.7.0
executing 2.2.0
fastjsonschema 2.21.2
fonttools 4.59.1
fqdn 1.5.1
fsspec 2025.7.0
GeoAlchemy2 0.18.0
greenlet 3.2.4
h11 0.16.0
httpcore 1.0.9
httpx 0.28.1
hypothesis 6.138.4
idna 3.10
iniconfig 2.1.0
ipykernel 6.30.1
ipython 9.4.0
ipython_pygments_lexers 1.1.1
ipywidgets 8.1.7
isoduration 20.11.0
isort 6.0.1
jedi 0.19.2
Jinja2 3.1.6
jmespath 1.0.1
json5 0.12.1
jsonpointer 3.0.0
jsonschema 4.25.1
jsonschema-specifications 2025.4.1
jupyter 1.1.1
jupyter_client 8.6.3
jupyter-console 6.6.3
jupyter_core 5.8.1
jupyter-events 0.12.0
jupyter-lsp 2.2.6
jupyter_server 2.17.0
jupyter_server_terminals 0.5.3
jupyterlab 4.4.6
jupyterlab_pygments 0.3.0
jupyterlab_server 2.27.3
jupyterlab_widgets 3.0.15
kiwisolver 1.4.9
lark 1.2.2
locket 1.0.0
Mako 1.3.10
MarkupSafe 3.0.2
matplotlib 3.10.5
matplotlib-inline 0.1.7
mccabe 0.7.0
mistune 3.1.3
moto 5.1.11
msgpack 1.1.1
mypy 1.17.1
mypy_extensions 1.1.0
nbclient 0.10.2
nbconvert 7.16.6
nbformat 5.10.4
nest-asyncio 1.6.0
netCDF4 1.7.2
notebook 7.4.5
notebook_shim 0.2.4
numpy 2.3.2
odc-geo 0.4.10
odc-loader 0.5.1
odc-stac 0.4.0
packaging 25.0
pandas 2.3.2
pandas-stubs 2.3.0.250703
pandocfilters 1.5.1
parso 0.8.5
partd 1.4.2
pathspec 0.12.1
pexpect 4.9.0
pillow 11.3.0
pip 25.1
platformdirs 4.4.0
pluggy 1.6.0
prometheus_client 0.22.1
prompt_toolkit 3.0.51
psutil 7.0.0
psycopg2 2.9.10
psycopg2-binary 2.9.10
ptyprocess 0.7.0
pure_eval 0.2.3
pycparser 2.22
Pygments 2.19.2
pylint 3.3.8
pyparsing 3.2.3
pyproj 3.7.2
pystac 1.13.0
pytest 8.4.1
pytest-cov 6.2.1
pytest_httpserver 1.1.3
python-dateutil 2.9.0.post0
python-json-logger 3.3.0
pytz 2025.2
PyYAML 6.0.2
pyzmq 27.0.2
rasterio 1.4.3
referencing 0.36.2
requests 2.32.5
responses 0.25.8
rfc3339-validator 0.1.4
rfc3986-validator 0.1.1
rfc3987-syntax 1.1.0
rpds-py 0.27.0
ruamel.yaml 0.18.15
ruamel.yaml.clib 0.2.12
ruff 0.12.10
s3transfer 0.13.1
scipy 1.16.1
Send2Trash 1.8.3
setuptools 78.1.1
shapely 2.1.1
six 1.17.0
sniffio 1.3.1
sortedcontainers 2.4.0
soupsieve 2.7
SQLAlchemy 2.0.43
stack-data 0.6.3
tblib 3.1.0
terminado 0.18.1
tinycss2 1.4.0
tomlkit 0.13.3
toolz 1.0.0
tornado 6.5.2
traitlets 5.14.3
types-affine 0.1.0
types-awscrt 0.27.6
types-cachetools 6.2.0.20250827
types-jsonschema 4.25.1.20250822
types-psutil 7.0.0.20250822
types-python-dateutil 2.9.0.20250822
types-pytz 2025.2.0.20250809
types-PyYAML 6.0.12.20250822
types-s3transfer 0.13.0
types-setuptools 80.9.0.20250822
typing_extensions 4.15.0
tzdata 2025.2
uri-template 1.3.0
urllib3 2.5.0
wcwidth 0.2.13
webcolors 24.11.1
webencodings 0.5.1
websocket-client 1.8.0
Werkzeug 3.1.3
wheel 0.45.1
widgetsnbextension 4.0.14
wrapt 1.17.3
xarray 2025.8.0
xmltodict 0.14.2
zict 3.0.0

[pjonsson]

As a general note, Ubuntu 20.04 reached the end of its standard support window of 5 years on 31 May 2025 (https://ubuntu.com/blog/ubuntu-20-04-lts-end-of-life-standard-support-is-coming-to-an-end-heres-how-to-prepare), so if you have the option to use Ubuntu 22.04 or 24.04 that might be worth investigating.

I don't think it's causing your problem, but normally you should only need to have one of psycopg2 and psycopg2-binary installed. The psycopg2 manual recommends the psycopg2 package for production, so that is probably the safer bet to keep.

It's possible the issue will be resolved if you can upgrade to a more modern Ubuntu, but if you need to continue to use 20.04 for some reason: I think your issue is caused by something expecting libffi 7, but you probably have libffi 8 installed. I'm not sure if you're using Conda (and I know nothing about Conda), but I did a quick search and people report that they got around this problem by downgrading the libffi installed in their Conda environment to 3.3.