WIP: Initial infrastructure for editions #6203
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teunbrand
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Nov 26, 2024
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| desc, | ||
| grDevices, | ||
| grid, | ||
| gtable (>= 0.1.1), | ||
| isoband, | ||
| lifecycle (> 1.0.1), | ||
| pkgload, |
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I don't like having to take on these dependencies.
Would it be bad to have a homebrew solution to parsing the description file?
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This PR aims to adress a topic discussed by Thomas and me off-github.
Briefly, we'd like to bring edition structure to ggplot2 to opt-in otherwise backward incompatible changes. It is modelled after testthat, with a few adaptations. This PR just aims to introduce infrastructure for working with editions in ggplot2.
The most important difference with testthat is in the relation that it has to other packages. The testthat package has 1:1 relationships: the tests of one single package does not affect tests in a second package. In contrast, it is not unreasonable to assume that for example {extensionPkg} defines ggplot2 extensions, which are then subsequently used by wrappers in {wrapperPkg}. In this example {extensionPkg} and {wrapperPkg} might opt-in different editions, which needs to be facilitated. For this reason, this PR gives each package their own local edition.
This PR is currently marked WIP as some details need to be ironed out. Specifically: