internal/pkg: exclusive artifacts

This alleviates scheduler overhead when curing many artifacts.

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

internal/rosa/acl.go

@@ -7,7 +7,7 @@ func (t Toolchain) newAttr() pkg.Artifact {
 		version  = "2.5.2"
 		checksum = "YWEphrz6vg1sUMmHHVr1CRo53pFXRhq_pjN-AlG8UgwZK1y6m7zuDhxqJhD0SV0l"
 	)
-	return t.New("attr-"+version, []pkg.Artifact{
+	return t.New("attr-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 		t.Load(Perl),
 	}, nil, nil, `
@@ -75,7 +75,7 @@ func (t Toolchain) newACL() pkg.Artifact {
 		version  = "2.3.2"
 		checksum = "-fY5nwH4K8ZHBCRXrzLdguPkqjKI6WIiGu4dBtrZ1o0t6AIU73w8wwJz_UyjIS0P"
 	)
-	return t.New("acl-"+version, []pkg.Artifact{
+	return t.New("acl-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 
 		t.Load(Attr),

internal/rosa/busybox.go

@@ -25,6 +25,9 @@ func (a busyboxBin) Kind() pkg.Kind { return kindBusyboxBin }
 // Params is a noop.
 func (a busyboxBin) Params(*pkg.IContext) {}
 
+// IsExclusive returns false: Cure performs a trivial filesystem write.
+func (busyboxBin) IsExclusive() bool { return false }
+
 // Dependencies returns the underlying busybox [pkg.File].
 func (a busyboxBin) Dependencies() []pkg.Artifact {
 	return []pkg.Artifact{a.bin}
@@ -80,7 +83,8 @@ func newBusyboxBin() pkg.Artifact {
 		checksum = "L7OBIsPu9enNHn7FqpBT1kOg_mCLNmetSeNMA3i4Y60Z5jTgnlX3qX3zcQtLx5AB"
 	)
 	return pkg.NewExec(
-		"busybox-bin-"+version, nil, pkg.ExecTimeoutMax, fhs.AbsRoot, []string{
+		"busybox-bin-"+version, nil, pkg.ExecTimeoutMax, false,
+		fhs.AbsRoot, []string{
 			"PATH=/system/bin",
 		},
 		AbsSystem.Append("bin", "busybox"),
@@ -111,7 +115,7 @@ func (t Toolchain) newBusybox() pkg.Artifact {
 		env = append(env, "EXTRA_LDFLAGS=-static")
 	}
 
-	return t.New("busybox-"+version, stage3Concat(t, []pkg.Artifact{},
+	return t.New("busybox-"+version, false, stage3Concat(t, []pkg.Artifact{},
 		t.Load(Make),
 		t.Load(KernelHeaders),
 	), nil, slices.Concat([]string{

internal/rosa/cmake.go

@@ -13,7 +13,7 @@ func (t Toolchain) newCMake() pkg.Artifact {
 		version  = "4.2.1"
 		checksum = "Y3OdbMsob6Xk2y1DCME6z4Fryb5_TkFD7knRT8dTNIRtSqbiCJyyDN9AxggN_I75"
 	)
-	return t.New("cmake-"+version, []pkg.Artifact{
+	return t.New("cmake-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 		t.Load(KernelHeaders),
 	}, nil, nil, `
@@ -59,6 +59,9 @@ type CMakeAttr struct {
 
 	// Override the default installation prefix [AbsSystem].
 	Prefix *check.Absolute
+
+	// Return an exclusive artifact.
+	Exclusive bool
 }
 
 // NewViaCMake returns a [pkg.Artifact] for compiling and installing via CMake.
@@ -94,7 +97,7 @@ chmod -R +w "${ROSA_SOURCE}"
 	}
 
 	sourcePath := AbsUsrSrc.Append(name)
-	return t.New(name+"-"+variant+"-"+version, stage3Concat(t, attr.Extra,
+	return t.New(name+"-"+variant+"-"+version, attr.Exclusive, stage3Concat(t, attr.Extra,
 		t.Load(CMake),
 		t.Load(Ninja),
 	), nil, slices.Concat([]string{

internal/rosa/etc.go

@@ -89,6 +89,9 @@ func (cureEtc) Kind() pkg.Kind { return kindEtc }
 // Params is a noop.
 func (cureEtc) Params(*pkg.IContext) {}
 
+// IsExclusive returns false: Cure performs a few trivial filesystem writes.
+func (cureEtc) IsExclusive() bool { return false }
+
 // Dependencies returns a slice containing the backing iana-etc release.
 func (a cureEtc) Dependencies() []pkg.Artifact {
 	if a.iana != nil {

internal/rosa/git.go

@@ -9,7 +9,7 @@ func (t Toolchain) newGit() pkg.Artifact {
 		version  = "2.52.0"
 		checksum = "uH3J1HAN_c6PfGNJd2OBwW4zo36n71wmkdvityYnrh8Ak0D1IifiAvEWz9Vi9DmS"
 	)
-	return t.New("git-"+version, stage3Concat(t, []pkg.Artifact{},
+	return t.New("git-"+version, false, stage3Concat(t, []pkg.Artifact{},
 		t.Load(Make),
 		t.Load(Perl),
 		t.Load(M4),

internal/rosa/gnu.go

@@ -7,7 +7,7 @@ func (t Toolchain) newMake() pkg.Artifact {
 		version  = "4.4.1"
 		checksum = "YS_B07ZcAy9PbaK5_vKGj64SrxO2VMpnMKfc9I0Q9IC1rn0RwOH7802pJoj2Mq4a"
 	)
-	return t.New("make-"+version, nil, nil, nil, `
+	return t.New("make-"+version, false, nil, nil, nil, `
 cd "$(mktemp -d)"
 /usr/src/make/configure \
 	--prefix=/system \
@@ -29,7 +29,7 @@ func (t Toolchain) newM4() pkg.Artifact {
 		version  = "1.4.20"
 		checksum = "RT0_L3m4Co86bVBY3lCFAEs040yI1WdeNmRylFpah8IZovTm6O4wI7qiHJN3qsW9"
 	)
-	return t.New("m4-"+version, []pkg.Artifact{
+	return t.New("m4-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 	}, nil, nil, `
 cd /usr/src/m4
@@ -55,7 +55,7 @@ func (t Toolchain) newAutoconf() pkg.Artifact {
 		version  = "2.72"
 		checksum = "-c5blYkC-xLDer3TWEqJTyh1RLbOd1c5dnRLKsDnIrg_wWNOLBpaqMY8FvmUFJ33"
 	)
-	return t.New("autoconf-"+version, []pkg.Artifact{
+	return t.New("autoconf-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 		t.Load(M4),
 		t.Load(Perl),
@@ -83,7 +83,7 @@ func (t Toolchain) newGettext() pkg.Artifact {
 		version  = "0.26"
 		checksum = "IMu7yDZX7xL5UO1ZxXc-iBMbY9LLEUlOroyuSlHMZwg9MKtxG7HIm8F2LheDua0y"
 	)
-	return t.New("gettext-"+version, []pkg.Artifact{
+	return t.New("gettext-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 	}, nil, nil, `
 cd /usr/src/gettext
@@ -119,7 +119,7 @@ func (t Toolchain) newDiffutils() pkg.Artifact {
 		version  = "3.12"
 		checksum = "9J5VAq5oA7eqwzS1Yvw-l3G5o-TccUrNQR3PvyB_lgdryOFAfxtvQfKfhdpquE44"
 	)
-	return t.New("diffutils-"+version, []pkg.Artifact{
+	return t.New("diffutils-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 	}, nil, nil, `
 cd /usr/src/diffutils
@@ -148,7 +148,7 @@ func (t Toolchain) newPatch() pkg.Artifact {
 		version  = "2.8"
 		checksum = "MA0BQc662i8QYBD-DdGgyyfTwaeALZ1K0yusV9rAmNiIsQdX-69YC4t9JEGXZkeR"
 	)
-	return t.New("patch-"+version, []pkg.Artifact{
+	return t.New("patch-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 	}, nil, nil, `
 cd /usr/src/patch
@@ -177,7 +177,7 @@ func (t Toolchain) newBash() pkg.Artifact {
 		version  = "5.3"
 		checksum = "4LQ_GRoB_ko-Ih8QPf_xRKA02xAm_TOxQgcJLmFDT6udUPxTAWrsj-ZNeuTusyDq"
 	)
-	return t.New("bash-"+version, []pkg.Artifact{
+	return t.New("bash-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 	}, nil, nil, `
 cd "$(mktemp -d)"
@@ -201,7 +201,7 @@ func (t Toolchain) newCoreutils() pkg.Artifact {
 		version  = "9.9"
 		checksum = "B1_TaXj1j5aiVIcazLWu8Ix03wDV54uo2_iBry4qHG6Y-9bjDpUPlkNLmU_3Nvw6"
 	)
-	return t.New("coreutils-"+version, []pkg.Artifact{
+	return t.New("coreutils-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 		t.Load(Perl),
 
@@ -232,7 +232,7 @@ func (t Toolchain) newGperf() pkg.Artifact {
 		version  = "3.3"
 		checksum = "RtIy9pPb_Bb8-31J2Nw-rRGso2JlS-lDlVhuNYhqR7Nt4xM_nObznxAlBMnarJv7"
 	)
-	return t.New("gperf-"+version, []pkg.Artifact{
+	return t.New("gperf-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 	}, nil, nil, `
 cd "$(mktemp -d)"

internal/rosa/go.go

@@ -10,7 +10,7 @@ import (
 // newGoBootstrap returns the Go bootstrap toolchain.
 func (t Toolchain) newGoBootstrap() pkg.Artifact {
 	const checksum = "8o9JL_ToiQKadCTb04nvBDkp8O1xiWOolAxVEqaTGodieNe4lOFEjlOxN3bwwe23"
-	return t.New("go1.4-bootstrap", []pkg.Artifact{
+	return t.New("go1.4-bootstrap", false, []pkg.Artifact{
 		t.Load(Bash),
 	}, nil, []string{
 		"CGO_ENABLED=0",
@@ -50,7 +50,7 @@ func (t Toolchain) newGo(
 	script string,
 	extra ...pkg.Artifact,
 ) pkg.Artifact {
-	return t.New("go"+version, slices.Concat([]pkg.Artifact{
+	return t.New("go"+version, false, slices.Concat([]pkg.Artifact{
 		t.Load(Bash),
 	}, extra), nil, slices.Concat([]string{
 		"CC=cc",

internal/rosa/kernel.go

@@ -8,6 +8,7 @@ import (
 
 // newKernel is a helper for interacting with Kbuild.
 func (t Toolchain) newKernel(
+	exclusive bool,
 	patches [][2]string,
 	script string,
 	extra ...pkg.Artifact,
@@ -16,7 +17,7 @@ func (t Toolchain) newKernel(
 		version  = "6.18.5"
 		checksum = "-V1e1WWl7HuePkmm84sSKF7nLuHfUs494uNMzMqXEyxcNE_PUE0FICL0oGWn44mM"
 	)
-	return t.New("kernel-"+version, slices.Concat([]pkg.Artifact{
+	return t.New("kernel-"+version, exclusive, slices.Concat([]pkg.Artifact{
 		t.Load(Make),
 	}, extra), nil, nil, `
 export LLVM=1
@@ -34,7 +35,7 @@ cd /usr/src/linux
 }
 
 func (t Toolchain) newKernelHeaders() pkg.Artifact {
-	return t.newKernel(nil, `
+	return t.newKernel(false, nil, `
 make "-j$(nproc)" \
 	INSTALL_HDR_PATH=/work/system \
 	headers_install

internal/rosa/libexpat.go

@@ -11,7 +11,7 @@ func (t Toolchain) newLibexpat() pkg.Artifact {
 		version  = "2.7.3"
 		checksum = "GmkoD23nRi9cMT0cgG1XRMrZWD82UcOMzkkvP1gkwSFWCBgeSXMuoLpa8-v8kxW-"
 	)
-	return t.New("libexpat-"+version, []pkg.Artifact{
+	return t.New("libexpat-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 		t.Load(Bash),
 	}, nil, nil, `

internal/rosa/libffi.go

@@ -7,7 +7,7 @@ func (t Toolchain) newLibffi() pkg.Artifact {
 		version  = "3.4.5"
 		checksum = "apIJzypF4rDudeRoI_n3K7N-zCeBLTbQlHRn9NSAZqdLAWA80mR0gXPTpHsL7oMl"
 	)
-	return t.New("libffi-"+version, []pkg.Artifact{
+	return t.New("libffi-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 		t.Load(KernelHeaders),
 	}, nil, nil, `

internal/rosa/libgd.go

@@ -7,7 +7,7 @@ func (t Toolchain) newLibgd() pkg.Artifact {
 		version  = "2.3.3"
 		checksum = "8T-sh1_FJT9K9aajgxzh8ot6vWIF-xxjcKAHvTak9MgGUcsFfzP8cAvvv44u2r36"
 	)
-	return t.New("libgd-"+version, []pkg.Artifact{
+	return t.New("libgd-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 
 		t.Load(Zlib),

internal/rosa/libseccomp.go

@@ -9,7 +9,7 @@ func (t Toolchain) newLibseccomp() pkg.Artifact {
 		version  = "2.6.0"
 		checksum = "mMu-iR71guPjFbb31u-YexBaanKE_nYPjPux-vuBiPfS_0kbwJdfCGlkofaUm-EY"
 	)
-	return t.New("libseccomp-"+version, []pkg.Artifact{
+	return t.New("libseccomp-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 		t.Load(Bash),
 		t.Load(Gperf),

internal/rosa/libxml2.go

@@ -11,7 +11,7 @@ func (t Toolchain) newLibxml2() pkg.Artifact {
 		version  = "2.15.1"
 		checksum = "pYzAR3cNrEHezhEMirgiq7jbboLzwMj5GD7SQp0jhSIMdgoU4G9oU9Gxun3zzUIU"
 	)
-	return t.New("libxml2-"+version, []pkg.Artifact{
+	return t.New("libxml2-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 	}, nil, nil, `
 cd /usr/src/

internal/rosa/llvm.go

@@ -197,6 +197,8 @@ cp -r /system/include /usr/include && rm -rf /system/include
 			"ROSA_LLVM_RUNTIMES=" + strings.Join(runtimes, ";"),
 		}, attr.env),
 		ScriptEarly: scriptEarly, Script: script + attr.script,
+
+		Exclusive: true,
 	})
 }
 

internal/rosa/meson.go

@@ -7,7 +7,7 @@ func (t Toolchain) newMeson() pkg.Artifact {
 		version  = "1.10.1"
 		checksum = "w895BXF_icncnXatT_OLCFe2PYEtg4KrKooMgUYdN-nQVvbFX3PvYWHGEpogsHtd"
 	)
-	return t.New("meson-"+version, []pkg.Artifact{
+	return t.New("meson-"+version, false, []pkg.Artifact{
 		t.Load(Python),
 		t.Load(Setuptools),
 	}, nil, nil, `

internal/rosa/musl.go

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

internal/rosa/ninja.go

@@ -7,7 +7,7 @@ func (t Toolchain) newNinja() pkg.Artifact {
 		version  = "1.13.2"
 		checksum = "ygKWMa0YV2lWKiFro5hnL-vcKbc_-RACZuPu0Io8qDvgQlZ0dxv7hPNSFkt4214v"
 	)
-	return t.New("ninja-"+version, []pkg.Artifact{
+	return t.New("ninja-"+version, false, []pkg.Artifact{
 		t.Load(CMake),
 		t.Load(Python),
 	}, nil, nil, `

internal/rosa/perl.go

@@ -7,7 +7,7 @@ func (t Toolchain) newPerl() pkg.Artifact {
 		version  = "5.42.0"
 		checksum = "2KR7Jbpk-ZVn1a30LQRwbgUvg2AXlPQZfzrqCr31qD5-yEsTwVQ_W76eZH-EdxM9"
 	)
-	return t.New("perl-"+version, []pkg.Artifact{
+	return t.New("perl-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 	}, nil, nil, `
 chmod -R +w /usr/src/perl && cd /usr/src/perl

internal/rosa/pkg-config.go

@@ -7,7 +7,7 @@ func (t Toolchain) newPkgConfig() pkg.Artifact {
 		version  = "0.29.2"
 		checksum = "gi7yAvkwo20Inys1tHbeYZ3Wjdm5VPkrnO0Q6_QZPCAwa1zrA8F4a63cdZDd-717"
 	)
-	return t.New("pkg-config-"+version, []pkg.Artifact{
+	return t.New("pkg-config-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 	}, nil, nil, `
 cd "$(mktemp -d)"

internal/rosa/python.go

@@ -32,7 +32,7 @@ func (t Toolchain) newPython() pkg.Artifact {
 		// breaks on llvm
 		"test_dbm_gnu",
 	}
-	return t.New("python-"+version, []pkg.Artifact{
+	return t.New("python-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 		t.Load(Zlib),
 		t.Load(Libffi),
@@ -69,7 +69,7 @@ func (t Toolchain) newSetuptools() pkg.Artifact {
 		version  = "80.10.1"
 		checksum = "p3rlwEmy1krcUH1KabprQz1TCYjJ8ZUjOQknQsWh3q-XEqLGEd3P4VrCc7ouHGXU"
 	)
-	return t.New("setuptools-"+version, []pkg.Artifact{
+	return t.New("setuptools-"+version, false, []pkg.Artifact{
 		t.Load(Python),
 	}, nil, nil, `
 pip3 install \

internal/rosa/rosa.go

@@ -176,6 +176,7 @@ var absCureScript = fhs.AbsUsrBin.Append(".cure-script")
 // New returns a [pkg.Artifact] compiled on this toolchain.
 func (t Toolchain) New(
 	name string,
+	exclusive bool,
 	extra []pkg.Artifact,
 	checksum *pkg.Checksum,
 	env []string,
@@ -206,7 +207,7 @@ func (t Toolchain) New(
 		args[0] = "bash"
 		support = slices.Concat([]pkg.Artifact{
 			cureEtc{},
-			toolchainBusybox.New("stage3-"+version, nil, nil, nil, `
+			toolchainBusybox.New("stage3-"+version, false, nil, nil, nil, `
 tar -C /work -xf /usr/src/stage3.tar.xz
 rm -rf /work/dev/ /work/proc/
 ln -vs ../usr/bin /work/bin
@@ -258,7 +259,7 @@ ln -vs ../usr/bin /work/bin
 	}
 
 	return pkg.NewExec(
-		name, checksum, pkg.ExecTimeoutMax,
+		name, checksum, pkg.ExecTimeoutMax, exclusive,
 		fhs.AbsRoot, env,
 		path, args,
 
@@ -307,7 +308,7 @@ cat /usr/src/` + name + `-patches/* | \
 `
 		aname += "-patched"
 	}
-	return t.New(aname, stage3Concat(t, []pkg.Artifact{},
+	return t.New(aname, false, stage3Concat(t, []pkg.Artifact{},
 		t.Load(Patch),
 	), nil, nil, script, paths...)
 }

internal/rosa/rsync.go

@@ -7,7 +7,7 @@ func (t Toolchain) newRsync() pkg.Artifact {
 		version  = "3.4.1"
 		checksum = "VBlTsBWd9z3r2-ex7GkWeWxkUc5OrlgDzikAC0pK7ufTjAJ0MbmC_N04oSVTGPiv"
 	)
-	return t.New("rsync-"+version, []pkg.Artifact{
+	return t.New("rsync-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 	}, nil, nil, `
 cd "$(mktemp -d)"

internal/rosa/wayland.go

@@ -7,7 +7,7 @@ func (t Toolchain) newWayland() pkg.Artifact {
 		version  = "1.24.0"
 		checksum = "JxgLiFRRGw2D3uhVw8ZeDbs3V7K_d4z_ypDog2LBqiA_5y2vVbUAk5NT6D5ozm0m"
 	)
-	return t.New("wayland-"+version, []pkg.Artifact{
+	return t.New("wayland-"+version, false, []pkg.Artifact{
 		t.Load(Python),
 		t.Load(Meson),
 		t.Load(PkgConfig),
@@ -50,7 +50,7 @@ func (t Toolchain) newWaylandProtocols() pkg.Artifact {
 		version  = "1.47"
 		checksum = "B_NodZ7AQfCstcx7kgbaVjpkYOzbAQq0a4NOk-SA8bQixAE20FY3p1-6gsbPgHn9"
 	)
-	return t.New("wayland-protocols-"+version, []pkg.Artifact{
+	return t.New("wayland-protocols-"+version, false, []pkg.Artifact{
 		t.Load(Python),
 		t.Load(Meson),
 		t.Load(PkgConfig),

internal/rosa/zlib.go

@@ -7,7 +7,7 @@ func (t Toolchain) newZlib() pkg.Artifact {
 		version  = "1.3.1"
 		checksum = "E-eIpNzE8oJ5DsqH4UuA_0GDKuQF5csqI8ooDx2w7Vx-woJ2mb-YtSbEyIMN44mH"
 	)
-	return t.New("zlib-"+version, []pkg.Artifact{
+	return t.New("zlib-"+version, false, []pkg.Artifact{
 		t.Load(Make),
 	}, nil, nil, `
 cd "$(mktemp -d)"