how to share large packages between projects/environments?

[fancyerii]

I have many projects with shared large packages such as pytorch(4G+). Every time I create a new project I need to install it. It wastes time and disk space. Is there any way to share these large packages like maven(java) or docker.

Java's maven is project based-- it manage each projects indenpendently. But all the dependents(jars) are stored centrally in .m2. So If project A and project B share exactly the same version of a lib, There is only one copy of this jar file.

I tried and searched many python package manager tools: pip,conda,pipenv,poetry,PDM. No of them has this features. A similar issue can be found pypa/packaging-problems#328. But I can't find solution there.

[frostming]

PDM. No of them has this features

Really? https://pdm-project.org/latest/usage/config/#central-installation-caches