Add support for Xcode Build Rules

[Gruppio]

Context 🕵️‍♀️

It would be nice having the support for the Xcode build rules.
These are useful for project that use metal shaders for example.
Do you think that this feature is easy to implement ?

[fortmarek]

Hi @Gruppio!

There is support for this in XcodeProj here, so that makes it a little bit easier.

Implementing this would consist of:

• Proposing API to be used in ProjectDescription - most of it will more-or-less copy PBXBuildRule from XcodeProj but we should try to make optimizations and convenience types where possible.
• Creating a new BuildRule type (with properties from the proposal), adding this to Project
• Actually generating the build rules
• Adding the build rules to copy files build phase (as per the example changes in .pbxproj below 👇)

This is an example diff after I added an empty metal shader build rule:

If you would like to go ahead and implement this, I'd gladly give you some pointers.

[klememi]

any update on this, please?

[fortmarek]

We haven't had time to work on this feature, unfortunately. Would you like to give it a try @klememi? We can give you some pointers and introduce you to the project 🙂

[klememi]

Actually why not :) I can give it a try at least.

[fortmarek]

Thanks @klememi 👌 feel free to ping me in Slack if you run into any issues.

[zenangst]

Any movement on this issue? 🤔

[danieleformichelli]

Any movement on this issue? 🤔

Hello 👋 would you like to try moving this forward? 🚀

[zenangst]

@danyf90 ended up solving our case using https://github.com/tuist/XcodeProj directly. Don't know if I have time take on this task at the moment I'm afraid.