diff --git a/Makefile.toml b/Makefile.toml
index 78782e9..b04eb0d 100644
--- a/Makefile.toml
+++ b/Makefile.toml
@@ -3,6 +3,8 @@
 #
 # Copyright (c) Berkus Decker <berkus+vesper@metta.systems>
 #
+# Global workspace configuration
+#
 [config]
 min_version = "0.32.0"
 default_to_workspace = true
@@ -84,30 +86,36 @@ KERNEL_BIN = "${CARGO_MAKE_WORKSPACE_WORKING_DIRECTORY}/target/nucleus.bin"
 CHAINBOOT_SERIAL = "/dev/tty.SLAB_USBtoUART"
 CHAINBOOT_BAUD = 115200
 
+#
+# === Base reusable commands ===
+#
 [tasks.default]
 alias = "all"
 
 [tasks.all]
-dependencies = ["kernel-binary"]
+dependencies = ["kernel-binary", "chainboot", "chainofcommand", "ttt"]
 
 [tasks.modules]
 command = "cargo"
 args = ["modules", "tree"]
 
-[tasks.do-build]
+# Disable build in the root by default.
+[tasks.build]
+clear = true
+alias = "empty"
+
+# Run a target build with current platform configuration.
+[tasks.build-target] # do-build
 command = "cargo"
 args = ["build", "@@split(PLATFORM_TARGET, )", "@@split(RUST_STD, )", "--release"]
 
-[tasks.build]
-disabled = true
-
 [tasks.build-device]
 env = { "TARGET_FEATURES" = "${TARGET_BOARD}" }
-run_task = "do-build"
+run_task = "build-target"
 
 [tasks.build-qemu]
 env = { "TARGET_FEATURES" = "${QEMU_FEATURES}" }
-run_task = "do-build"
+run_task = "build-target"
 
 [tasks.qemu-runner]
 dependencies = ["build-qemu", "kernel-binary"]
@@ -120,8 +128,9 @@ script = [
 ]
 
 [tasks.qemu]
-disabled = true
+alias = "empty"
 
+# @todo Should be expand-target (since it's not for a host platform)
 [tasks.expand]
 env = { "TARGET_FEATURES" = "" }
 command = "cargo"
@@ -145,7 +154,7 @@ args = ["clippy", "@@split(PLATFORM_TARGET, )", "@@split(RUST_STD, )", "@@remove
 # These tasks are written in cargo-make's own script to make it portable across platforms (no `basename` on Windows)
 
 ## Copy and prepare a given ELF file. Convert to binary output format.
-[tasks.custom-binary]
+[tasks.build-custom-binary]
 env = { "BINARY_FILE" = "${BINARY_FILE}" }
 script_runner = "@duckscript"
 script = [
@@ -223,7 +232,26 @@ script = [
     "diskutil ejectAll ${VOLUME}"
 ]
 
+#
+# Per-workspace commands, disabled in the root by efault.
+#
+# Tasks for chainboot
 [tasks.chainboot]
 dependencies = ["build-device", "kernel-binary"]
 command = "echo"
 args = ["\n***===***\n", "🏎️ Run the following command in your terminal:\n", "🏎️   ${CARGO_MAKE_WORKSPACE_WORKING_DIRECTORY}/target/debug/chainofcommand ${CHAINBOOT_SERIAL} ${CHAINBOOT_BAUD} --kernel ${KERNEL_BIN}\n", "***===***\n\n"]
+
+[tasks.cb-eject]
+alias = "empty"
+
+# Tasks for chainofcommand
+[tasks.chainofcommand]
+alias = "empty"
+
+# Tasks for ttt
+[tasks.ttt]
+alias = "empty"
+
+# Tasks for nucleus
+[tasks.hopper]
+alias = "empty"
diff --git a/bin/chainboot/Makefile.toml b/bin/chainboot/Makefile.toml
index 3855c15..8f8bc50 100644
--- a/bin/chainboot/Makefile.toml
+++ b/bin/chainboot/Makefile.toml
@@ -1,19 +1,17 @@
+#
+# SPDX-License-Identifier: BlueOak-1.0.0
+#
+# Copyright (c) Berkus Decker <berkus+vesper@metta.systems>
+#
+# Build chainboot binary
+#
 [env]
 CHAINBOOT_ELF = "${CARGO_MAKE_WORKSPACE_WORKING_DIRECTORY}/target/${TARGET}/release/chainboot"
 CHAINBOOT_BIN = "${CARGO_MAKE_WORKSPACE_WORKING_DIRECTORY}/target/chainboot.bin"
 
-[tasks.kernel-binary]
+[tasks.build-kernel-binary]
 env = { "BINARY_FILE" = "${CHAINBOOT_ELF}" }
-run_task = "custom-binary"
-
-[tasks.chainofcommand]
-disabled = true
-
-[tasks.hopper]
-disabled = true
-
-[tasks.zellij-nucleus]
-disabled = true
+run_task = "build-custom-binary"
 
 [tasks.zellij-cb]
 env = { "KERNEL_BIN" = "${CHAINBOOT_BIN}", "QEMU_OPTS" = "${QEMU_OPTS} ${QEMU_DISASM_OPTS}" }
@@ -23,15 +21,6 @@ run_task = "zellij-config"
 env = { "KERNEL_BIN" = "${CHAINBOOT_BIN}", "QEMU_OPTS" = "${QEMU_OPTS} ${QEMU_DISASM_OPTS} ${QEMU_GDB_OPTS}", "TARGET_BOARD" = "rpi3", "TARGET_DTB" = "${CARGO_MAKE_WORKSPACE_WORKING_DIRECTORY}/targets/bcm2710-rpi-3-b-plus.dtb" }
 run_task = "zellij-config"
 
-[tasks.nm]
-disabled = true
-
-[tasks.qemu]
-disabled = true
-
-[tasks.qemu-gdb]
-disabled = true
-
 [tasks.qemu-cb]
 env = { "QEMU_RUNNER_OPTS" = "${QEMU_DISASM_OPTS} -serial pty", "KERNEL_BIN" = "${CHAINBOOT_BIN}", "TARGET_DTB" = "${CARGO_MAKE_WORKSPACE_WORKING_DIRECTORY}/targets/bcm2710-rpi-3-b-plus.dtb" }
 extend = "qemu-runner"
@@ -40,18 +29,15 @@ extend = "qemu-runner"
 env = { "QEMU_RUNNER_OPTS" = "${QEMU_DISASM_OPTS} ${QEMU_GDB_OPTS} -serial pty", "KERNEL_BIN" = "${CHAINBOOT_BIN}", "TARGET_DTB" = "${CARGO_MAKE_WORKSPACE_WORKING_DIRECTORY}/targets/bcm2710-rpi-3-b-plus.dtb" }
 extend = "qemu-runner"
 
-[tasks.gdb]
-disabled = true
-
 [tasks.gdb-cb]
-dependencies = ["build", "kernel-binary", "gdb-config"]
+dependencies = ["build", "build-kernel-binary", "gdb-config"]
 env = { "RUST_GDB" = "${GDB}" }
 script = [
     "exec < /dev/tty && rust-gdb -x ${GDB_CONNECT_FILE} ${CHAINBOOT_ELF}"
 ]
 
 [tasks.sdcard]
-dependencies = ["build", "kernel-binary"]
+dependencies = ["build", "build-kernel-binary"]
 script_runner = "@duckscript"
 script = [
 '''
@@ -62,4 +48,8 @@ script = [
 ]
 
 [tasks.cb-eject]
+clean = true
+alias = "cb-eject-chainboot"
+
+[tasks.cb-eject-chainboot]
 dependencies = ["sdeject"]
diff --git a/bin/chainofcommand/Makefile.toml b/bin/chainofcommand/Makefile.toml
index c9ffa44..1867026 100644
--- a/bin/chainofcommand/Makefile.toml
+++ b/bin/chainofcommand/Makefile.toml
@@ -1,12 +1,16 @@
+#
+# SPDX-License-Identifier: BlueOak-1.0.0
+#
+# Copyright (c) Berkus Decker <berkus+vesper@metta.systems>
+#
+# Build chainofcommand tool
+#
 [tasks.build]
 command = "cargo"
 args = ["build"]
 
 [tasks.chainofcommand]
-dependencies = ["build"]
-
-[tasks.build-device]
-disabled = true
+alias = "build"
 
 [tasks.test]
 command = "cargo"
@@ -15,42 +19,3 @@ args = ["test"]
 [tasks.clippy]
 command = "cargo"
 args = ["clippy", "--", "-D", "warnings"]
-
-[tasks.hopper]
-disabled = true
-
-[tasks.kernel-binary]
-disabled = true
-
-[tasks.zellij-nucleus]
-disabled = true
-
-[tasks.zellij-cb]
-disabled = true
-
-[tasks.zellij-cb-gdb]
-disabled = true
-
-[tasks.nm]
-disabled = true
-
-[tasks.qemu]
-disabled = true
-
-[tasks.qemu-gdb]
-disabled = true
-
-[tasks.qemu-cb]
-disabled = true
-
-[tasks.sdcard]
-disabled = true
-
-[tasks.cb-eject]
-disabled = true
-
-[tasks.gdb]
-disabled = true
-
-[tasks.gdb-cb]
-disabled = true
diff --git a/machine/Makefile.toml b/machine/Makefile.toml
index 93a396f..785d03d 100644
--- a/machine/Makefile.toml
+++ b/machine/Makefile.toml
@@ -1,11 +1,8 @@
-[tasks.qemu-gdb]
-disabled = true
-
-[tasks.gdb]
-disabled = true
-
-[tasks.hopper]
-disabled = true
-
-[tasks.kernel-binary]
-disabled = true
+#
+# SPDX-License-Identifier: BlueOak-1.0.0
+#
+# Copyright (c) Berkus Decker <berkus+vesper@metta.systems>
+#
+# Build nucleus library
+#
+# No special configuration needed.
diff --git a/nucleus/Makefile.toml b/nucleus/Makefile.toml
index 9e4aaac..49114d6 100644
--- a/nucleus/Makefile.toml
+++ b/nucleus/Makefile.toml
@@ -3,48 +3,35 @@
 #
 # Copyright (c) Berkus Decker <berkus+vesper@metta.systems>
 #
-[tasks.kernel-binary]
+# Build nucleus
+#
+[tasks.build-kernel-binary]
 env = { "BINARY_FILE" = "${KERNEL_ELF}" }
-run_task = "custom-binary"
+run_task = "build-custom-binary"
 
 [tasks.qemu]
+clear = true
+alias = "qemu-kernel"
+
+[tasks.qemu-kernel]
 env = { "QEMU_RUNNER_OPTS" = "${QEMU_SERIAL_OPTS}", "TARGET_DTB" = "${CARGO_MAKE_WORKSPACE_WORKING_DIRECTORY}/targets/bcm2710-rpi-3-b-plus.dtb" }
 extend = "qemu-runner"
-disabled = false
-
-[tasks.qemu-cb]
-disabled = true
 
 [tasks.qemu-gdb]
 env = { "QEMU_RUNNER_OPTS" = "${QEMU_SERIAL_OPTS} ${QEMU_DISASM_OPTS} ${QEMU_GDB_OPTS}", "TARGET_DTB" = "${CARGO_MAKE_WORKSPACE_WORKING_DIRECTORY}/targets/bcm2710-rpi-3-b-plus.dtb" }
 extend = "qemu-runner"
 
-[tasks.qemu-cb-gdb]
-disabled = true
-
-[tasks.chainofcommand]
-disabled = true
-
 [tasks.zellij-nucleus]
 env = { "KERNEL_BIN" = "${KERNEL_BIN}" }
 run_task = "zellij-config"
 
-[tasks.zellij-cb]
-disabled = true
-
-[tasks.zellij-cb-gdb]
-disabled = true
-
 [tasks.gdb]
-dependencies = ["build", "kernel-binary", "gdb-config"]
+dependencies = ["build", "build-kernel-binary", "gdb-config"]
 env = { "RUST_GDB" = "${GDB}" }
 script = [
     "exec < /dev/tty && pipx run gdbgui -g \"rust-gdb -x ${GDB_CONNECT_FILE} ${KERNEL_ELF}\""
 ]
 
-[tasks.gdb-cb]
-disabled = true
-
 [tasks.install-nm]
 install_crate = { crate_name = "cargo-binutils", binary = "rust-nm", test_arg = ["--help"] }
 
@@ -57,22 +44,23 @@ script = [
     "${NM} ${KERNEL_ELF} | sort -k 1 | rustfilt"
 ]
 
-[tasks.sdcard]
-dependencies = ["build", "kernel-binary"]
+[tasks.sdcard] # kernel-sdcard ?
+dependencies = ["build", "build-kernel-binary"]
 script_runner = "@duckscript"
 script = [
 '''
     kernelImage = set "kernel8.img"
     cp ${KERNEL_BIN} ${VOLUME}/${kernelImage}
-    echo "Copied nucleus to ${VOLUME}/${kernelImage}"
+    echo "Copied nucleus to ${VOLUME}/${kernelImage}" # TODO add emoji
 '''
 ]
 
-[tasks.cb-eject]
-disabled = true
-
 [tasks.hopper]
-dependencies = ["build", "kernel-binary"]
+clear = true
+alias = "kernel-hopper"
+
+[tasks.kernel-hopper]
+dependencies = ["build", "build-kernel-binary"]
 # The cmd line below causes a bug in hopper, see https://www.dropbox.com/s/zyw5mfx0bepcjb1/hopperv4-RAW-bug.mov?dl=0
 #"hopperv4 --loader RAW --base-address 0x80000 --entrypoint 0x80000 --file-offset 0 --plugin arm --cpu aarch64 --variant generic --contains-code true --executable ${KERNEL_BIN}"
 script = [
diff --git a/tools/ttt/Makefile.toml b/tools/ttt/Makefile.toml
index c9ffa44..61a218c 100644
--- a/tools/ttt/Makefile.toml
+++ b/tools/ttt/Makefile.toml
@@ -1,12 +1,22 @@
+#
+# SPDX-License-Identifier: BlueOak-1.0.0
+#
+# Copyright (c) Berkus Decker <berkus+vesper@metta.systems>
+#
+# Build ttt tool
+#
 [tasks.build]
+clear = true
+alias = "ttt"
+
+[tasks.ttt]
+clear = true
+alias = "ttt-binary"
+
+[tasks.ttt-binary]
+env = { "TARGET_FEATURES" = "${TARGET_BOARD}" }
 command = "cargo"
-args = ["build"]
-
-[tasks.chainofcommand]
-dependencies = ["build"]
-
-[tasks.build-device]
-disabled = true
+args = ["build", "--features=${TARGET_FEATURES}"]
 
 [tasks.test]
 command = "cargo"
@@ -16,41 +26,5 @@ args = ["test"]
 command = "cargo"
 args = ["clippy", "--", "-D", "warnings"]
 
-[tasks.hopper]
-disabled = true
-
-[tasks.kernel-binary]
-disabled = true
-
-[tasks.zellij-nucleus]
-disabled = true
-
-[tasks.zellij-cb]
-disabled = true
-
-[tasks.zellij-cb-gdb]
-disabled = true
-
-[tasks.nm]
-disabled = true
-
-[tasks.qemu]
-disabled = true
-
-[tasks.qemu-gdb]
-disabled = true
-
-[tasks.qemu-cb]
-disabled = true
-
-[tasks.sdcard]
-disabled = true
-
-[tasks.cb-eject]
-disabled = true
-
-[tasks.gdb]
-disabled = true
-
-[tasks.gdb-cb]
-disabled = true
+#[tasks.build-kernel-binary] #  Invert this, kernel binary shall depend on ttt-binary availability
+#dependencies = ["build"]