Do I need to re-dowload packages when I downgrade Julia?

Tooling Package Management
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Hi all!

I am having some troubles using PackageCompiler recently (whereas it worked fine with Julia 1.8 ~6 months ago), so I thought I needed to downgrade my Julia installation. I tried juliaup and worked fine, installing v1.8.5.

My question is: are there any steps I should do to keep external packages in a compatible state between the two versions? I know files in ~/.julia/environments/ serve this purpose, but may this cause problems with the precompilation of packages? I don’t know, do I need to delete ~/.julia/artifacts or ~/.julia/compiled or anything else when switching? Maybe running ] instantiate?

Thanks!

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just re-instantiating should work.

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Thanks! But if I try to do ] instantiate in the (already instantiated) project, I get

(ARMCortexM4Model) pkg> instantiate
┌ Warning: The active manifest file has dependencies that were resolved with a different julia version (1.9.0). Unexpected behavior may occur.

(where ARMCortexM4Model is my project). Deleting Manifest.toml solves it. Is this all that is needed?

4

oh right, you may need to resolve also.

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