# Precompiling a code when first upgrading from v0.6 to v0.7

**URL:** https://discourse.julialang.org/t/precompiling-a-code-when-first-upgrading-from-v0-6-to-v0-7/18986
**Category:** New to Julia
**Tags:** question, package
**Created:** [December 26, 2018, 1:10am UTC](https://discourse.julialang.org/t/precompiling-a-code-when-first-upgrading-from-v0-6-to-v0-7/18986 "2018-12-26T01:10:19Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![biona001](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/biona001/32/16497_2.png) [@biona001](https://discourse.julialang.org/u/biona001)
#### Post date: [December 26, 2018, 5:55pm UTC](https://discourse.julialang.org/t/precompiling-a-code-when-first-upgrading-from-v0-6-to-v0-7/18986/3 "2018-12-26T17:55:53Z")

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Hi, thanks for the reply.

So I realized that working with an unregistered package is what caused most of the hassle. Basically you need to `develop` an unregistered package like:

`] dev https://github.com/biona001/IHT.jl`.

which was not in the documentation, unfortunately. For other trouble shooting, I found [this post](https://discourse.julialang.org/t/new-pkg-questions/13333/5) helpful.

For future reference, I believe the code inside the `.julia/packages/xxxx/your-package` is supposed to be an environment - that is, a final code product that is there for reproducibility, and you shouldn’t be editing that code.

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