This is a rules_xcodeproj Sample

To run the project just checkout the main branch and run

make create_project

Or manually:

bazel run //:xcodeproj
open BazelSample.xcodeproj

Currently, we found a bug in the incremental project generation:

Bug description

When focusing on an ios_application and a target that is a dependency of that ios_application, the rules_xcodeproj don't find the target on the graph. Showing the error:

ERROR: Internal precondition failure:
tools/generators/xcschemes/src/Generator/CreateCustomSchemeInfos.swift:461: Run build target "@//:MySampleSource ios-sim_arm64-min16.0-applebin_ios-ios_sim_arm64-dbg-ST-21282182d87c" not found in:
[@//:MySampleApp ios-sim_arm64-min16.0-applebin_ios-ios_sim_arm64-dbg-ST-21282182d87c, @//Libraries/LibraryA:LibraryACore ios-sim_arm64-min16.0-applebin_ios-ios_sim_arm64-dbg-ST-21282182d87c, @//Libraries/LibraryA:LibraryAInterface ios-sim_arm64-min16.0-applebin_ios-ios_sim_arm64-dbg-ST-21282182d87c, @//Libraries/LibraryB:LibraryB ios-sim_arm64-min16.0-applebin_ios-ios_sim_arm64-dbg-ST-21282182d87c, @//Libraries/LibraryC:LibraryC ios-sim_arm64-min16.0-applebin_ios-ios_sim_arm64-dbg-ST-21282182d87c, @//Libraries/LibraryD:LibraryD ios-sim_arm64-min16.0-applebin_ios-ios_sim_arm64-dbg-ST-21282182d87c]

Reproducing:

We're creating an ios_application with a dependency:

bazel_sample/BUILD

Lines 37 to 52 in 17ffe72

	ios_application(
	name = "MySampleApp",
	bundle_id = "com.narlei.sample",
	families = [
	"iphone",
	"ipad",
	],
	infoplists = ["App/Info.plist"],
	deps = [
	":MySampleSource",
	],
	minimum_os_version = "16.0",
	visibility = ["//visibility:public"],
	resources = [":PerformanceTestAppAssets"],
	version = ":BazelSampleVersion",
	)

The MySampleSource contains the app dependencies:

bazel_sample/BUILD

Lines 15 to 28 in 17ffe72

	swift_library(
	name = "MySampleSource",
	tags = ["manual"],
	module_name = "MySampleSource",
	srcs = glob(["App/**/*.swift"]),
	visibility = ["//visibility:public"],
	deps = [
	"//Libraries/LibraryA:LibraryACore",
	"//Libraries/LibraryA:LibraryAInterface",
	"//Libraries/LibraryB:LibraryB",
	"//Libraries/LibraryC:LibraryC",
	"//Libraries/LibraryD:LibraryD",
	]
	)

The bug is when I'm trying to focus on the MySampleSource and on MySampleApp:

bazel_sample/BUILD

Lines 65 to 73 in 17ffe72

	XCODEPROJ_FOCUSED_TARGETS = [
	"//:MySampleApp", # Comment this line to simulate working without the app on focus targets
	"//Libraries/LibraryA:LibraryACore",
	"//Libraries/LibraryA:LibraryAInterface",
	"//Libraries/LibraryB:LibraryB",
	"//Libraries/LibraryC:LibraryC",
	"//Libraries/LibraryD:LibraryD",
	"//:MySampleSource",
	]

ERROR: Internal precondition failure:
tools/generators/xcschemes/src/Generator/CreateCustomSchemeInfos.swift:461: Run build target "@//:MySampleSource ios-sim_arm64-min16.0-applebin_ios-ios_sim_arm64-dbg-ST-21282182d87c" not found in:
[@//:MySampleApp ios-sim_arm64-min16.0-applebin_ios-ios_sim_arm64-dbg-ST-21282182d87c, @//Libraries/LibraryA:LibraryACore ios-sim_arm64-min16.0-applebin_ios-ios_sim_arm64-dbg-ST-21282182d87c, @//Libraries/LibraryA:LibraryAInterface ios-sim_arm64-min16.0-applebin_ios-ios_sim_arm64-dbg-ST-21282182d87c, @//Libraries/LibraryB:LibraryB ios-sim_arm64-min16.0-applebin_ios-ios_sim_arm64-dbg-ST-21282182d87c, @//Libraries/LibraryC:LibraryC ios-sim_arm64-min16.0-applebin_ios-ios_sim_arm64-dbg-ST-21282182d87c, @//Libraries/LibraryD:LibraryD ios-sim_arm64-min16.0-applebin_ios-ios_sim_arm64-dbg-ST-21282182d87c]

The rules_xcodeproj isn't finding the MySampleSource on the target lists. This is a target of a xcscheme:

bazel_sample/BUILD

Lines 82 to 112 in 17ffe72

	SCHEMES = [
	xcschemes.scheme(
	name = "ProjectSample",
	profile = None,
	run = xcschemes.run(
	build_targets = [
	xcschemes.top_level_anchor_target(
	label = "//:MySampleApp",
	library_targets = [
	xcschemes.library_target("//Libraries/LibraryA:LibraryACore",
	post_actions = [
	xcschemes.pre_post_actions.build_script(title = "This is a post_action", script_text = "echo 'Bye'")
	],
	pre_actions = [
	xcschemes.pre_post_actions.build_script(title = "This is a pre_action", script_text = "echo 'Hi'")
	]
	),
	"//:MySampleSource",
	"//Libraries/LibraryA:LibraryAInterface",
	"//Libraries/LibraryB:LibraryB",
	"//Libraries/LibraryC:LibraryC",
	"//Libraries/LibraryD:LibraryD",
	],
	)
	],
	# Comment the launch_target to simulate working without the app on focus targets
	launch_target = xcschemes.launch_target(
	"//:MySampleApp"
	),
	),
	),

Removing the MySampleApp from the focus list (and from the launch_target) works without errors, finding the MySampleSource, but it creates a xscheme without the launch app.

bazel_sample/BUILD

Lines 107 to 110 in 17ffe72

	# Comment the launch_target to simulate working without the app on focus targets
	launch_target = xcschemes.launch_target(
	"//:MySampleApp"
	),

bazel_sample/BUILD

Lines 65 to 66 in 17ffe72

	XCODEPROJ_FOCUSED_TARGETS = [
	"//:MySampleApp", # Comment this line to simulate working without the app on focus targets