internal/rosa/llvm: remove unused field

This change also renames confusingly named flags field and corrects its doc comment.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/llvm.go

@@ -13,8 +13,8 @@ import (
 // llvmAttr holds the attributes that will be applied to a new [pkg.Artifact]
 // containing a LLVM variant.
 type llvmAttr struct {
-	// Passed through to PackageAttr.Flag.
-	flags int
+	// Enabled projects and runtimes.
+	pr int
 
 	// Concatenated with default environment for PackageAttr.Env.
 	env []string
@@ -24,8 +24,6 @@ type llvmAttr struct {
 	append []string
 	// Passed through to PackageAttr.NonStage0.
 	nonStage0 []pkg.Artifact
-	// Passed through to PackageAttr.Paths.
-	paths []pkg.ExecPath
 	// Concatenated with default fixup for CMakeHelper.Script.
 	script string
 
@@ -75,19 +73,18 @@ func llvmFlagName(flag int) string {
 
 // newLLVMVariant returns a [pkg.Artifact] containing a LLVM variant.
 func (t Toolchain) newLLVMVariant(variant string, attr *llvmAttr) pkg.Artifact {
-
 	if attr == nil {
 		panic("LLVM attr must be non-nil")
 	}
 
 	var projects, runtimes []string
 	for i := 1; i < llvmProjectAll; i <<= 1 {
-		if attr.flags&i != 0 {
+		if attr.pr&i != 0 {
 			projects = append(projects, llvmFlagName(i))
 		}
 	}
 	for i := (llvmProjectAll + 1) << 1; i < llvmRuntimeAll; i <<= 1 {
-		if attr.flags&i != 0 {
+		if attr.pr&i != 0 {
 			runtimes = append(runtimes, llvmFlagName(i))
 		}
 	}
@@ -126,7 +123,7 @@ func (t Toolchain) newLLVMVariant(variant string, attr *llvmAttr) pkg.Artifact {
 		}...)
 	}
 
-	if attr.flags&llvmProjectClang != 0 {
+	if attr.pr&llvmProjectClang != 0 {
 		cache = append(cache, []KV{
 			{"CLANG_DEFAULT_LINKER", "lld"},
 			{"CLANG_DEFAULT_CXX_STDLIB", "libc++"},
@@ -134,30 +131,30 @@ func (t Toolchain) newLLVMVariant(variant string, attr *llvmAttr) pkg.Artifact {
 			{"CLANG_DEFAULT_UNWINDLIB", "libunwind"},
 		}...)
 	}
-	if attr.flags&llvmProjectLld != 0 {
+	if attr.pr&llvmProjectLld != 0 {
 		script += `
 ln -s ld.lld /work/system/bin/ld
 `
 	}
-	if attr.flags&llvmRuntimeCompilerRT != 0 {
+	if attr.pr&llvmRuntimeCompilerRT != 0 {
 		if attr.append == nil {
 			cache = append(cache, []KV{
 				{"COMPILER_RT_USE_LLVM_UNWINDER", "ON"},
 			}...)
 		}
 	}
-	if attr.flags&llvmRuntimeLibunwind != 0 {
+	if attr.pr&llvmRuntimeLibunwind != 0 {
 		cache = append(cache, []KV{
 			{"LIBUNWIND_USE_COMPILER_RT", "ON"},
 		}...)
 	}
-	if attr.flags&llvmRuntimeLibcxx != 0 {
+	if attr.pr&llvmRuntimeLibcxx != 0 {
 		cache = append(cache, []KV{
 			{"LIBCXX_HAS_MUSL_LIBC", "ON"},
 			{"LIBCXX_USE_COMPILER_RT", "ON"},
 		}...)
 	}
-	if attr.flags&llvmRuntimeLibcxxABI != 0 {
+	if attr.pr&llvmRuntimeLibcxxABI != 0 {
 		cache = append(cache, []KV{
 			{"LIBCXXABI_USE_COMPILER_RT", "ON"},
 			{"LIBCXXABI_USE_LLVM_UNWINDER", "ON"},
@@ -193,7 +190,6 @@ index 9da357a7ebb9..b2931510c1ae 100644
 			"ROSA_LLVM_RUNTIMES=" + strings.Join(runtimes, ";"),
 		}, attr.env),
 
-		Paths: attr.paths,
 		Flag: TExclusive,
 	}, &CMakeHelper{
 		Variant: variant,
@@ -294,7 +290,7 @@ ln -s \
 		env: stage0ExclConcat(t, []string{},
 			"LDFLAGS="+earlyLDFLAGS(false),
 		),
-		flags: llvmRuntimeLibunwind | llvmRuntimeLibcxx | llvmRuntimeLibcxxABI,
+		pr: llvmRuntimeLibunwind | llvmRuntimeLibcxx | llvmRuntimeLibcxxABI,
 		cmake: slices.Concat([]KV{
 			// libc++ not yet available
 			{"CMAKE_CXX_COMPILER_WORKS", "ON"},
@@ -310,7 +306,7 @@ ln -s \
 	})
 
 	clang = t.newLLVMVariant("clang", &llvmAttr{
-		flags: llvmProjectClang | llvmProjectLld,
+		pr: llvmProjectClang | llvmProjectLld,
 		env: stage0ExclConcat(t, []string{},
 			"CFLAGS="+earlyCFLAGS,
 			"CXXFLAGS="+earlyCXXFLAGS(),