# How do I convert to using the package tarball format?

**URL:** https://discourse.julialang.org/t/how-do-i-convert-to-using-the-package-tarball-format/126100
**Category:** General Usage
**Created:** [February 20, 2025, 5:43am UTC](https://discourse.julialang.org/t/how-do-i-convert-to-using-the-package-tarball-format/126100 "2025-02-20T05:43:50Z")
**Posts on this page:** 1
**Showing post:** 6

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### Author: ![magister-ludi](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/magister-ludi/32/4003_2.png) [@magister-ludi](https://discourse.julialang.org/u/magister-ludi)
#### Post date: [February 20, 2025, 10:15pm UTC](https://discourse.julialang.org/t/how-do-i-convert-to-using-the-package-tarball-format/126100/6 "2025-02-20T22:15:25Z")

</div>

I have checked the source of `Pkg.jl`. There are two places in the code where the `@info` message could be emitted. Both of them check whether the registry name is `"General"` (obviously `true` in my case), and whether `ENV` has the key `"JULIA_PKG_GEN_REG_FMT_CHECK"`, defaulting to `true` if it doesn’t.  
Since that key doesn’t exist in my environment, both tests pass and the message is emitted. I don’t know when the variable for the second test could/should have been set, but I have now added

```julia
ENV["JULIA_PKG_GEN_REG_FMT_CHECK"] = "0"

```

to `~/.julia/startup.jl` and did

```julia
pkg> registry rm General; registry add General

```

The message has disappeared.  
Your replies prompted me to do a proper investigation, so thanks again.

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