Multiple commands produce Assets.car in xcode11

[Ekulelu]

After I updated to xcode11, the new build system didn't work. An error occurred with below message
"Multiple commands produce '~/Library/Developer/Xcode/DerivedData/LIKE-hgpysltcapxaaqbkjnoggrxhteud/Build/Products/Debug-iphoneos/xxx.app/Assets.car' "

I think the reason is "s.resources = [ "TrueSDK/**/Assets.xcassets"] " in podspec file, which will lead pod create a copy script like this "${PODS_ROOT}/TrueSDK/TrueSDK/External/Assets.xcassets". And the name of "Assets" is multiple with the main target's image xcassets.

I think you should remove the "s.resources = [ "TrueSDK/**/Assets.xcassets"] ", and put the Assets.xcassets into the "resource_bundles" tag, which will create a bundle to fold the assets.xcassets.

[horseshoe7]

I also have experienced this and am currently trying to find a workaround.

[horseshoe7]

Workaround: In Xcode you have to go into File > Workspace Settings... and set the build system to the legacy build system.

[SandeepAggarwal]

Hey,
I am also facing the same issue.
Could we fix this as Ekulelu suggested?

[mkaarthick]

Did anyone resolve it?

[mishrasatyam]

I found a solution where you parse project.pbxproj file and modify it with @bacons/xcode package
Run this post install

// There is an issue in the xcodeproj file where the Assets.car file is not being copied to the correct location. Run this to fix the issue
const fs = require('fs');
const plist = require('plist');
const { parse, build } = require('@bacons/xcode/json');
const projectPath = './ios/.../project.pbxproj';

const main = () => {
  const pbxproj = parse(fs.readFileSync(projectPath, 'utf8'));
  if (!pbxproj) return;
  let pbxprojClone = pbxproj;

  const objectsKeys = Object.keys(pbxprojClone.objects);
  const objectKeyWithCPR = objectsKeys.find((el) => pbxprojClone.objects[el].name === '[CP] Copy Pods Resources');
  const value = pbxprojClone.objects[objectKeyWithCPR];
  const stringEndingWithAssetsIndex = value?.outputPaths?.findIndex((el) => el?.endsWith('Assets.car'));

  if (stringEndingWithAssetsIndex) {
    if (value?.inputPaths && value?.outputPaths) {
      const assetsString = value.outputPaths[stringEndingWithAssetsIndex];
      value.outputPaths.splice(stringEndingWithAssetsIndex, 1);
      value.inputPaths.push(assetsString);
    }
  }
  const pbxprojString = build(pbxprojClone);
  fs.writeFileSync(projectPath, pbxprojString, 'utf8');
};

main();