diff --git a/Makefile b/Makefile
index 1037727..89306a1 100644
--- a/Makefile
+++ b/Makefile
@@ -3,6 +3,7 @@ NIX = /nix/var/nix/profiles/default/bin/nix
 .DEFAULT_GOAL := switch
 
 bootstrap:
+	@test -n "$(HOST)" || { echo "usage: make bootstrap HOST=<host>" >&2; exit 1; }
 	@xcode-select -p > /dev/null 2>&1 || \
 	  { xcode-select --install; \
 	    echo "Command Line Tools installer started; re-run 'make bootstrap' once it finishes." >&2; \
@@ -10,7 +11,7 @@ bootstrap:
 	@test -x $(NIX) || \
 	  curl --proto '=https' --tlsv1.2 -sSf -L https://install.determinate.systems/nix \
 	    | sh -s -- install --determinate --no-confirm
-	$(NIX) run .#bootstrap
+	$(NIX) run .#bootstrap -- $(HOST)
 
 switch:
 	$(NIX) run .#switch
diff --git a/README.md b/README.md
index f588fc1..3a2d8bd 100644
--- a/README.md
+++ b/README.md
@@ -32,19 +32,20 @@ VM=nixden HMCFG=nixden nix run .#home
 
 ## Bootstrap fresh Mac
 
-Stock macOS only needs `make` after the Xcode Command Line Tools are available:
+Stock macOS only needs the host name (one of `hosts/`):
 
 ```sh
-xcode-select --install
-make
+make bootstrap HOST=pro
 ```
 
-`make` is intentionally only a pre-Nix bootstrap shim. It installs Nix with the
-Determinate Systems installer if needed, then delegates to `nix run .#bootstrap`.
-The flake app installs Homebrew if absent and runs the first nix-darwin switch.
+`make bootstrap` is intentionally only a pre-Nix shim. It starts the Xcode
+Command Line Tools installer if they are missing, installs Nix with the
+Determinate Systems installer if needed, then delegates to
+`nix run .#bootstrap -- <host>`. The flake app installs Homebrew if absent
+and runs the first nix-darwin switch.
 
 Open a new terminal afterwards so the freshly installed tools are on `PATH`.
-Thereafter use the flake apps above.
+Thereafter plain `make` (= `nix run .#switch`) converges the machine.
 
 If the login shell does not change automatically, run once: