Freeze Python requirements.txt dependencies in a ready-to-install wheel cache.
Following is an illustrative requirements.txt file:
hg+https://example.com/someone/somepackage/#egg=somepackage
It requires a package version that is not available on PyPI, but installs
cleanly in a virtualenv, which yields the following pip freeze output:
somedependency==1.3
somepackage==0.1.dev1234
We would like to reproduce this virtualenv on a different host. However, this
output is not useful as input to pip install -r, because is has lost the
hg+https reference. One option would be to package everything as wheels on the
source host, and re-use them on the destination.
Running wheelfreeze requirements.txt will create the following tree:
wheelfreeze/
├── install*
├── sys_executable_hint
└── wheels/
├── somedependency-1.3-py2.py3-none-any.whl
└── somepackage-0.1.dev1234-py3-none-any.whl
Running wheelfreeze/install path/to/venv will install the wheels in the
virtualenv at path/to/venv.
A best-effort attempt is made to detect the Python executable that was used in
creating the wheels, and its path is written to
wheelfreeze/sys_executable_hint.
A POSIX environment with realpath from GNU Coreutils and pip from Python.
Varies by OS and setup, but generally for a normal user:
make install PREFIX=~/.local
Or system wide:
sudo make install