OK, this seems to be the python that Ansible is using. Being called directly without all the PATH mangling that the .ansible-wrapped script does. Which explains why it does not find the kubernetes module...

(Thanks @darix for the hint)

Running the playbook with -v shows me that it is using a completely different python3 from /nix/store/lhpwdis5hkyljz1d200bj1s6g51ljq9k-python3-3.12.8/bin/python3 which does not have the kubernetes module apparently.

No idea how it picks this up, where it takes that information from and how to fix this...

Hardcoding a nix path, even it is just ~/.nix-profile/bin/python3, is of course not feasible if the code is being used on other machines where this is not guaranteed to exist (as outlined in the answers yesterday).

What am I missing?

Fourth and hopefully last round for the #NixOS #Ansible bubble:

Short recap: Having the kubernetes module in the ansible derivation/package is not enough, it needs to also be in the python3 or python312 derivation/package.

Fun fact:
- `which python3` gives me /home/tux.penguin/.nix-profile/bin/python3
- this links to /nix/store/ipwx571dlhxmdf1n1yd8vgqq5ndjnxba-python3-3.12.8-env/bin/python3
- `which -a python3` only gives me this one python, no other binaries found in the PATH with that name

1. Using /nix/store/ipwx571dlhxmdf1n1yd8vgqq5ndjnxba-python3-3.12.8-env/bin/python3 as ansible_python_interpreter works, the kubernetes module is found
2. Using /home/tux.penguin/.nix-profile/bin/python3 for ansible_python_interpreter works
3. Using "{{ lookup('env','HOME') }}/.nix-profile/bin/python3" for ansible_python_interpreter works
4. Using just python3 DOES NOT work?!?!? What the hell? Even if this is resolved (in the shell at least) to the same python3 binary/link in ~/.nix-profile/bin/python3? What the hell?

Third round for the #NixOS #Ansible bubble:

I think I have a solution! At least I got some thing working.

Having the python312 nixpkg installed is not enough. It is also not enough to have python312, python312Packages.kubernetes and python312Packages.cryptography installed.

I had to install them "in the same package":

```
home.packages = with pkgs; [
ansible
ansible-lint
(pkgs.python3.withPackages (python-pkgs: [
python-pkgs.cryptography
python-pkgs.kubernetes
]))
];
```

Then I could set the ansible_python_interpreter to `python3` and could use the kubernetes python module for using things from the kubernetes.core Ansible collection.

This is in addition to having the modules also available in the ansible derivation, no idea if that is really necessary.

I'll do some more digging and testing, but at least something worked now! I call that a win!

# NixOS #Ansible #Python #hellyeah

Second round for the #NixOS #Ansible bubble:

With lots of help I now have a Ansible derivation that includes python modules for requirements from e.g. the kubernetes.core Ansible collection.

But things still do not work. Example: Creating something in a Kubernetes cluster using the kubernetes.core collection. No matter whether I target localhost in my playbook or the remote host with a delegate_to for localhost.

Ansible uses the installed python directly, but without all the module-including-voodoo that is done in the .ansible-wrapped file (that is being called when "ansible" is being invoked". And thus the kubernetes module is not found.

I also tried installing python3 and python3Packages.kubernetes in addition to ansible. I see the kubernetes in $HOME/.nix-profile/lib/python3.12/site-packages/, but it is still not found. I tried telling Ansible that localhost has a python interpreter, but no change.

Frustrating...