# How to use VSCode and REPL to write and test a package?

**URL:** <https://discourse.julialang.org/t/how-to-use-vscode-and-repl-to-write-and-test-a-package/78818>\
**Category:** VS Code\
**Tags:** question, package\
**Created:** [March 31, 2022, 3:28pm UTC](https://discourse.julialang.org/t/how-to-use-vscode-and-repl-to-write-and-test-a-package/78818 "2022-03-31T15:28:31Z")\
**Posts on this page:** 1\
**Showing post:** 43

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**Author:** ![Nathan\_Boyer](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/nathan_boyer/32/14825_2.png) [@Nathan\_Boyer](https://discourse.julialang.org/u/Nathan_Boyer)\
**Post date:** [April 19, 2022, 1:18pm UTC](https://discourse.julialang.org/t/how-to-use-vscode-and-repl-to-write-and-test-a-package/78818/43 "2022-04-19T13:18:03Z")

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Even if I duplicate all the dependencies from the package Project.toml to the test Project.toml, none of the environments use the correct version of DataFrames.

 ![image](https://global.discourse-cdn.com/julialang/original/3X/3/5/3562dbe1600034b0bdd8427255121939fdefc4c6.png)

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