internal/rosa: rename stage0 toolchain

This is stage0 relative to Rosa OS, and stage3 relative to the toolchain it is compiled on (Gentoo in this case). Referring to the toolchain itself as stage3 is counterintuitive and misleading.

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

internal/rosa/cmake.go

@@ -97,7 +97,7 @@ func (t Toolchain) NewViaCMake(
 	}
 
 	sourcePath := AbsUsrSrc.Append(name)
-	return t.New(name+"-"+variant+"-"+version, attr.Flag, stage3Concat(t, extra,
+	return t.New(name+"-"+variant+"-"+version, attr.Flag, stage0Concat(t, extra,
 		t.Load(CMake),
 		t.Load(Ninja),
 	), nil, slices.Concat([]string{

internal/rosa/llvm.go

@@ -160,7 +160,7 @@ ln -s ld.lld /work/system/bin/ld
 			[2]string{"LIBCXX_USE_COMPILER_RT", "ON"},
 		)
 
-		if t > toolchainStage3 {
+		if t > toolchainStage0 {
 			// libcxxabi fails to compile if c++ headers not prefixed in /usr
 			// is found by the compiler, and doing this is easier than
 			// overriding CXXFLAGS; not using mv here to avoid chown failures
@@ -199,7 +199,7 @@ cp -r /system/include /usr/include && rm -rf /system/include
 
 		Paths: attr.paths,
 		Flag:  TExclusive,
-	}, stage3Concat(t, attr.extra,
+	}, stage0Concat(t, attr.extra,
 		t.Load(Libffi),
 		t.Load(Python),
 		t.Load(Perl),
@@ -233,7 +233,7 @@ func (t Toolchain) newLLVM() (musl, compilerRT, runtimes, clang pkg.Artifact) {
 	}
 
 	compilerRT = t.newLLVMVariant("compiler-rt", &llvmAttr{
-		env: stage3ExclConcat(t, []string{},
+		env: stage0ExclConcat(t, []string{},
 			"LDFLAGS="+earlyLDFLAGS(false),
 		),
 		cmake: [][2]string{
@@ -276,7 +276,7 @@ ln -s \
 
 	musl = t.NewMusl(&MuslAttr{
 		Extra: []pkg.Artifact{compilerRT},
-		Env: stage3ExclConcat(t, []string{
+		Env: stage0ExclConcat(t, []string{
 			"CC=clang",
 			"LIBCC=/system/lib/clang/21/lib/" +
 				triplet() + "/libclang_rt.builtins.a",
@@ -288,7 +288,7 @@ ln -s \
 	})
 
 	runtimes = t.newLLVMVariant("runtimes", &llvmAttr{
-		env: stage3ExclConcat(t, []string{},
+		env: stage0ExclConcat(t, []string{},
 			"LDFLAGS="+earlyLDFLAGS(false),
 		),
 		flags: llvmRuntimeLibunwind | llvmRuntimeLibcxx | llvmRuntimeLibcxxABI,
@@ -308,7 +308,7 @@ ln -s \
 
 	clang = t.newLLVMVariant("clang", &llvmAttr{
 		flags: llvmProjectClang | llvmProjectLld,
-		env: stage3ExclConcat(t, []string{},
+		env: stage0ExclConcat(t, []string{},
 			"CFLAGS="+earlyCFLAGS,
 			"CXXFLAGS="+earlyCXXFLAGS(),
 			"LDFLAGS="+earlyLDFLAGS(false),

internal/rosa/make.go

@@ -148,7 +148,7 @@ func (t Toolchain) NewViaMake(
 		panic("cannot remain in root")
 	}
 
-	return t.New(name+"-"+version, attr.Flag, stage3Concat(t,
+	return t.New(name+"-"+version, attr.Flag, stage0Concat(t,
 		attr.NonStage3,
 		finalExtra...,
 	), nil, attr.Env, scriptEarly+`

internal/rosa/mksh.go

@@ -7,7 +7,7 @@ func (t Toolchain) newMksh() pkg.Artifact {
 		version  = "59c"
 		checksum = "0Zj-k4nXEu3IuJY4lvwD2OrC2t27GdZj8SPy4DoaeuBRH1padWb7oREpYgwY8JNq"
 	)
-	return t.New("mksh-"+version, 0, stage3Concat(t, []pkg.Artifact{},
+	return t.New("mksh-"+version, 0, stage0Concat(t, []pkg.Artifact{},
 		t.Load(Perl),
 		t.Load(Coreutils),
 	), nil, []string{

internal/rosa/musl.go

@@ -42,7 +42,7 @@ rmdir -v /work/lib
 		script = ""
 	}
 
-	return t.New("musl-"+version, 0, stage3Concat(t, attr.Extra,
+	return t.New("musl-"+version, 0, stage0Concat(t, attr.Extra,
 		t.Load(Make),
 		t.Load(Coreutils),
 	), nil, slices.Concat([]string{

internal/rosa/rosa.go

@@ -82,11 +82,11 @@ func earlyLDFLAGS(static bool) string {
 	return s
 }
 
-// earlyCFLAGS is reference CFLAGS for the stage3 toolchain.
+// earlyCFLAGS is reference CFLAGS for the stage0 toolchain.
 const earlyCFLAGS = "-Qunused-arguments " +
 	"-isystem/system/include"
 
-// earlyCXXFLAGS returns reference CXXFLAGS for the stage3 toolchain
+// earlyCXXFLAGS returns reference CXXFLAGS for the stage0 toolchain
 // corresponding to [runtime.GOARCH].
 func earlyCXXFLAGS() string {
 	return "--start-no-unused-arguments " +
@@ -105,12 +105,12 @@ const (
 	// binary distribution. This is for decompressing unsupported formats.
 	toolchainBusybox Toolchain = iota
 
-	// toolchainStage3 denotes the Gentoo stage3 toolchain. Special care must be
+	// toolchainStage0 denotes the stage0 toolchain. Special care must be taken
-	// taken to compile correctly against this toolchain.
+	// to compile correctly against this toolchain.
-	toolchainStage3
+	toolchainStage0
 
 	// toolchainIntermediate denotes the intermediate toolchain compiled against
-	// toolchainStage3. This toolchain should be functionally identical to [Std]
+	// toolchainStage0. This toolchain should be functionally identical to [Std]
 	// and is used to bootstrap [Std].
 	toolchainIntermediate
 
@@ -122,19 +122,19 @@ const (
 	_toolchainEnd
 )
 
-// stage3Concat concatenates s and values. If the current toolchain is
+// stage0Concat concatenates s and values. If the current toolchain is
-// toolchainStage3, stage3Concat returns s as is.
+// toolchainStage0, stage0Concat returns s as is.
-func stage3Concat[S ~[]E, E any](t Toolchain, s S, values ...E) S {
+func stage0Concat[S ~[]E, E any](t Toolchain, s S, values ...E) S {
-	if t == toolchainStage3 {
+	if t == toolchainStage0 {
 		return s
 	}
 	return slices.Concat(s, values)
 }
 
-// stage3ExclConcat concatenates s and values. If the current toolchain is not
+// stage0ExclConcat concatenates s and values. If the current toolchain is not
-// toolchainStage3, stage3ExclConcat returns s as is.
+// toolchainStage0, stage0ExclConcat returns s as is.
-func stage3ExclConcat[S ~[]E, E any](t Toolchain, s S, values ...E) S {
+func stage0ExclConcat[S ~[]E, E any](t Toolchain, s S, values ...E) S {
-	if t == toolchainStage3 {
+	if t == toolchainStage0 {
 		return slices.Concat(s, values)
 	}
 	return s
@@ -208,7 +208,7 @@ func (t Toolchain) New(
 		args[0] = "hush"
 		env = fixupEnviron(env, nil, "/system/bin")
 
-	case toolchainStage3:
+	case toolchainStage0:
 		name += "-boot"
 		var seed string
 		switch runtime.GOARCH {
@@ -224,11 +224,11 @@ func (t Toolchain) New(
 		args[0] = "bash"
 		support = slices.Concat([]pkg.Artifact{
 			cureEtc{},
-			toolchainBusybox.New("stage3", 0, nil, nil, nil, `
+			toolchainBusybox.New("stage0", 0, nil, nil, nil, `
-tar -C /work -xf /usr/src/stage3.tar.xz
+tar -C /work -xf /usr/src/stage0.tar.xz
 rm -rf /work/dev/ /work/proc/
 ln -vs ../usr/bin /work/bin
-`, pkg.Path(AbsUsrSrc.Append("stage3.tar.xz"), false,
+`, pkg.Path(AbsUsrSrc.Append("stage0.tar.xz"), false,
 				pkg.NewHTTPGet(
 					nil, "https://basement.gensokyo.uk/seed/"+seed,
 					mustDecode(seed),
@@ -328,7 +328,7 @@ cat /usr/src/` + name + `-patches/* | \
 `
 		aname += "-patched"
 	}
-	return t.New(aname, 0, stage3Concat(t, []pkg.Artifact{},
+	return t.New(aname, 0, stage0Concat(t, []pkg.Artifact{},
 		t.Load(Patch),
 	), nil, nil, script, paths...)
 }

internal/rosa/toybox.go

@@ -7,13 +7,13 @@ func (t Toolchain) newToybox(suffix, script string) pkg.Artifact {
 		version  = "0.8.13"
 		checksum = "rZ1V1ATDte2WeQZanxLVoiRGdfPXhMlEo5-exX-e-ml8cGn9qOv0ABEUVZpX3wTI"
 	)
-	return t.New("toybox-"+version+suffix, TEarly, stage3Concat(t, []pkg.Artifact{},
+	return t.New("toybox-"+version+suffix, TEarly, stage0Concat(t, []pkg.Artifact{},
 		t.Load(Make),
 		t.Load(Bash),
 		t.Load(Gzip),
 
 		t.Load(KernelHeaders),
-	), nil, stage3Concat(t, []string{},
+	), nil, stage0Concat(t, []string{},
 		"ROSA_CHECK=make USER=cure tests",
 	), `
 ln -s ../system/bin/bash /bin/ || true