< my account >:~$ lsb_release -d
No LSB modules are available.
Description: Ubuntu 24.04.1 LTS


sudo apt update

python3 -m venv .venv

source .venv/bin/activate

pip3 install --upgrade pip

(.venv) <my account="">:~/piper/src/python$ pip3 list
Package Version
---------- -------
pip 24.3.1
setuptools 75.6.0
wheel 0.45.1

(.venv) <my account="">:~/piper/src/python$ python3 --version
Python 3.12.3

python3 -m pip install piper-tts

Collecting piper-tts
Downloading piper_tts-1.2.0-py3-none-any.whl.metadata (776 bytes)
INFO: pip is looking at multiple versions of piper-tts to determine which version is compatible with other requirements. This could take a while.
Downloading piper_tts-1.1.0-py3-none-any.whl.metadata (776 bytes)
ERROR: Cannot install piper-tts==1.1.0 and piper-tts==1.2.0 because these package versions have conflicting dependencies.

The conflict is caused by:
piper-tts 1.2.0 depends on piper-phonemize~=1.1.0
piper-tts 1.1.0 depends on piper-phonemize~=1.0.0

To fix this you could try to:
1. loosen the range of package versions you've specified
2. remove package versions to allow pip to attempt to solve the dependency conflict

—
After getting this error, I tried:
(.venv) <my account="">:~/piper/src/python$ python3 -m pip install piper-phonemize
ERROR: Could not find a version that satisfies the requirement piper-phonemize (from versions: none)
ERROR: No matching distribution found for piper-phonemize</my></my></my>