JULIA_PKG_PRESERVE_TIERED_INSTALLED is mentioned in the docs for ] add.
But this is not the only way packages get installed.
A particular case I am interested in is resolve.
If you delete the Manifest.toml and run resolve it will install all the dependancies.
I want to know if setting JULIA_PKG_PRESERVE_TIERED_INSTALLED will actually work to make it select ones i have installed for some other project or not.
I feel like it should.
It’s really hard to test this, and I haven’t been able to find where in the source code ] resolve decided to install things, to see what options it uses.