pixi 0.31.0

[BrewTestBot]

Created by brew bump

---

Created with brew bump-formula-pr.

release notes

#### ✨ Highlights
Thanks to our maintainer @baszamstra!
He sped up the resolver for all cases we could think of in [#2162](https://github.com/prefix-dev/pixi/pull/2162)
Check the result of times it takes to solve the environments in our test set:
![image](https://private-user-images.githubusercontent.com/4995967/371994129-0c89b07f-7e29-430a-b876-a8a5826bbc9d.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.vh3Fs0MGdoPR0k-BmjGArXEekrlPV5N9wNM2CUq8e44)
Added

Add nodefaults to imported conda envs by @ruben-arts in #2097
Add newline to .gitignore by @ruben-arts in #2095
Add --no-activation option to prevent env activation during global install/upgrade by @183amir in #1980
Add --priority arg to project channel add by @minrk in #2086

Changed

Use pixi spec for conda environment yml by @ruben-arts in #2096
Follow symlinks while walking files by @0xbe7a in #2141

Documentation

Community: add array-api-extra by @lucascolley in #2107
Add minimal constructor example by @bollwyvl in #2102
Add description for pixi update --json by @scottamain in #2160
Fixes backticks for doc strings by @rachfop in #2174

Fixed

Sort exported conda explicit spec topologically by @synapticarbors in #2101
--import env_file breaks channel priority by @fecet in #2113
Allow exact yanked pypi packages by @nichmor in #2116
Check if files are same in self-update by @apoorvkh in #2132
get_or_insert_nested_table by @Hofer-Julian in #2167
Improve install.sh PATH handling and general robustness by @Arcitec in #2189
Output tasks on pixi run without input by @ruben-arts in #2193

Performance

Significantly speed up conda resolution by @baszalmstra in #2162

New Contributors

@Arcitec made their first contribution in #2189
@rachfop made their first contribution in #2174
@scottamain made their first contribution in #2160
@apoorvkh made their first contribution in #2132
@0xbe7a made their first contribution in #2141
@fecet made their first contribution in #2113
@minrk made their first contribution in #2086
@183amir made their first contribution in #1980
@lucascolley made their first contribution in #2107

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