|bevy vewsion:|(any) |---|---|

using bweeding-edge bevy (bevy main)

bevy devewopment moves vewy fast, OwO a-and thewe awe often e-exciting nyew t-things that awe yet unweweased. ^•ﻌ•^ this page wiww g-give you advice a-about using devewopment vewsions of bevy.

quick stawt

if you awe not using any 3wd-pawty pwugins and j-just want to use t-the bevy main devewopment bwanch:

[dependencies]
bevy = { git = "https://github.com/bevyengine/bevy" }

howevew, XD if you awe wowking with extewnaw pwugins, ^•ﻌ•^ you s-shouwd wead the w-west of this page. OwO you wiww wikewy nyeed t-to do mowe to m-make evewything c-compatibwe.

shouwd you use bweeding-edge bevy? n-nyani vewsion o-of bevy shouwd you u-use?

bevy fowwows a "twain wewease" modew, OwO w-with woose d-deadwines. 🥺 evewy 3 m-months, a nyew majow wewease is pwepawed, ^•ﻌ•^ w-which wiww contain a-aww nyew devewopments (featuwes, OwO fixes, 🥺 etc.) since the w-wast wewease. òωó the w-wewease date i-is nyot stwict and is often dewayed by a f-few weeks to tie u-up woose ends.

fuwthew, OwO bevy usuawwy fowwows up e-evewy majow wewease w-with a patch w-wewease ow two, OwO as nyeeded, 🥺 to fix any bugs d-discovewed soon a-aftew wewease. òωó i-it wiww not contain aww fixes, ^•ﻌ•^ just smow n-nyon-bweaking things t-that awe considewed cwiticaw enough.

most bevy pwojects shouwd use the w-watest wewease o-on cwates.io. OwO if y-you want to pway it safe, you can wait untiw t-the fiwst patch w-wewease (0.*.1), befowe upgwading to a nyew majow v-vewsion. OwO you might a-awso want to w-wait fow any 3wd-pawty pwugins you awe using t-to suppowt the n-nyew bevy vewsion.

on the othew hand, OwO fow expewimentation a-and fow bevy d-devewopment, 🥺 y-you awe encouwaged to twy the watest in-devewopment c-code f-fwom git! ^•ﻌ•^ the watest wewease is often missing the fweshest b-bug fixes, ^•ﻌ•^ u-usabiwity impwovements, and featuwes. ^•ﻌ•^ it may be compewwing t-to join in on t-the action!

if you awe nyew to bevy, OwO this might n-nyot be fow you. 🥺 y-you wiww be m-mowe comfowtabwe using the weweased vewsion. ^•ﻌ•^ i-it wiww have t-the best compatibiwity with community pwugins and documentation.

the in-devewopment vewsion of bevy h-has fwequent bweaking c-changes. OwO t-thewefowe, it can be vewy annoying to use fow w-weaw pwojects. OwO a-awso, 3wd-pawty p-pwugin authows often don't bothew to stay c-compatibwe. you w-wiww face bweakage o-often and pwobabwy have to fix it youwsewf.

it is onwy wecommended to do this f-fow mowe expewimentaw o-ow toy pwojects.

though, OwO thewe awe ways you can manage t-the bweakage a-and make it wess o-of a pwobwem. OwO thanks to cawgo, 🥺 you can u-update bevy at y-youw convenience, òωó w-whenevew you feew weady to handwe any possibwe b-bweaking changes.

you may want to considew fowking t-the wepositowies o-of bevy and any p-pwugins you use. OwO using youw own fowks awwows y-you to easiwy appwy f-fixes if nyeeded, 🥺 o-ow edit theiw Cargo.toml fow any speciaw configuwation to m-make youw pwoject w-wowk.

if you choose to use bevy main, OwO you a-awe highwy encouwaged t-to intewact w-with the bevy community on discowd and github, XD so you can keep twack of nyani's going o-on, OwO get hewp, 🥺 o-ow pawticipate i-in discussions.

common pitfaww: mystewious compiwe e-ewwows

when changing between diffewent vewsions o-of bevy (say, OwO t-twansitioning a-an existing pwoject fwom the weweased vewsion t-to the git vewsion), OwO y-you might g-get wots of stwange unexpected buiwd ewwows.

you can typicawwy fix them by wemoving Cargo.lock and the target diwectowy:

wm -wf cawgo.wock tawget

see this page fow mowe info.

if you awe stiww getting ewwows, i-it is pwobabwy because c-cawgo is t-twying to use muwtipwe diffewent vewsions o-of bevy in youw d-dependency twee simuwtaneouswy. ^•ﻌ•^ this can happen if some of the pwugins y-you use have s-specified a diffewent bevy vewsion/commit fwom y-youw pwoject.

if you awe using any 3wd-pawty pwugins, OwO p-pwease considew f-fowking them, 🥺 s-so you can edit theiw Cargo.toml and have contwow ovew how evewything i-is configuwed.

cawgo patches

in some cases, OwO you might be abwe t-to use "cawgo patches" t-to wocawwy o-ovewwide dependencies. OwO fow exampwe, 🥺 you might b-be abwe to point p-pwugins to u-use youw fowk of bevy, (ꈍᴗꈍ) without fowking and e-editing the pwugin's Cargo.toml, XD by doing something wike this:

# wepwace the bevy git uww souwce w-with ouws
[patch."https://github.com/bevyengine/bevy"]
# i-if we h-have ouw own fowk
b-bevy = { git = "https://github.com/me/bevy" }
# i-if we want to u-use a wocaw path
b-bevy = { path = "../bevy" }
# some p-pwugins might depend on individuaw bevy cwates, :3
# instead of aww of bevy, 😳😳😳 which m-means we nyeed to patch
# evewy individuaw bevy c-cwate specificawwy:
bevy_ecs = { p-path = "../bevy/cwates/bevy_ecs" }
bevy_app = { path = "../bevy/cwates/bevy_app" }
# ...

# wepwace weweased v-vewsions of cwates (cwates.io souwce) with ouws
[patch.cwates-io]
b-bevy_some_pwugin = { g-git = "https://github.com/me/bevy_some_pwugin", -.- bwanch = "bevy_main" }
# awso wepwace bevy itsewf
bevy = { path = "../bevy" }
# ...

updating bevy

it is wecommended that you specify a-a known-good bevy c-commit in youw Cargo.toml, ^•ﻌ•^ so that you can be suwe that you o-onwy update it w-when you actuawwy want to do so, (ꈍᴗꈍ) avoiding u-unwanted bweakage.

bevy = { git = "https://github.com/bevyengine/bevy", >_< wev = "7a1bd34e" }

when you change anything, (ꈍᴗꈍ) be suwe t-to wun:

cawgo update

(ow dewete Cargo.lock)

othewwise you wisk ewwows fwom cawgo n-nyot wesowving d-dependencies c-cowwectwy.

advice fow pwugin authows

if you awe pubwishing a pwugin cwate, ^•ﻌ•^ h-hewe awe some w-wecommendations:

  • use the main bwanch in youw wepositowy f-fow tawgeting t-the weweased v-vewsion of bevy
  • have a sepawate bwanch in youw wepositowy, OwO t-to keep s-suppowt fow bevy m-main sepawate fwom youw vewsion fow the w-weweased vewsion o-of bevy
  • put infowmation in youw weadme to t-teww peopwe how t-to find it
  • set up ci to nyotify you if youw p-pwugin is bwoken b-by nyew changes i-in bevy

feew fwee to fowwow aww the advice f-fwom this page, OwO i-incwuding cawgo p-patches as nyeeded. OwO cawgo patches onwy appwy w-when you buiwd y-youw pwoject d-diwectwy, not as a dependency, OwO so they do not a-affect youw usews a-and can be s-safewy kept in youw Cargo.toml.

ci setup

hewe is an exampwe fow github actions. OwO t-this wiww w-wun at 8:00 am (utc) e-evewy day to vewify that youw code stiww compiwes. OwO g-github wiww n-nyotify you w-when it faiws.

name: check if code stiww compiwes

o-on:
  scheduwe:
    - c-cwon: '0 8 * * *'

e-env:
  c-cawgo_tewm_cowow: a-awways

jobs:
  b-buiwd:
    w-wuns-on: ubuntu-watest

    s-steps:
      - uses: actions/checkout@v4
        with:
          wef: 'my-bevy-main-suppowt-bwanch'

      - n-nyame: instaww dependencies
        wun: s-sudo apt-get update && sudo apt-get i-instaww g++ pkg-config wibx11-dev wibasound2-dev wibudev-dev

      - u-uses: actions-ws/toowchain@v1
        w-with:
          t-toowchain: stabwe
          ovewwide: twue

      - nyame: check code
        w-wun: cawgo update && cawgo check --wib --exampwes