nixos: Update s-t-c and apply help text

nixos/modules/system/activation/apply/apply.sh

@@ -28,6 +28,23 @@ die() {
     exit 1
 }
 
+usage() {
+    log "NixOS apply invocation error: $*"
+cat >&2 <<EOF
+Usage: apply [switch|boot|test|dry-activate] [OPTIONS]
+Subcommands:
+    switch        make the configuration the boot default and activate it
+    boot          make the configuration the boot default
+    test          activate the configuration, but don\'t make it the boot default
+    dry-activate  show what would be done if this configuration were activated
+Options:
+    --install-bootloader    install the bootloader
+    --profile PROFILE       use PROFILE as the target profile (if applicable)
+    --specialisation NAME   use the specialisation NAME
+EOF
+}
+
+
 parse_args() {
     while [[ $# -gt 0 ]]; do
         case "$1" in

nixos/modules/system/activation/switch-to-configuration.pl

@@ -80,12 +80,9 @@ if ("@localeArchive@" ne "") {
 
 if (!defined($action) || ($action ne "switch" && $action ne "boot" && $action ne "test" && $action ne "dry-activate")) {
     print STDERR <<"EOF";
+error: Unknown action $action
 Usage: $0 [switch|boot|test|dry-activate]
-
-switch:       make the configuration the boot default and activate now
-boot:         make the configuration the boot default
-test:         activate the configuration, but don\'t make it the boot default
-dry-activate: show what would be done if this configuration were activated
+Consider calling `apply` instead of `switch-to-configuration`.
 EOF
     exit(1);
 }

pkgs/by-name/sw/switch-to-configuration-ng/src/src/main.rs

@@ -940,10 +940,7 @@ fn do_user_switch(parent_exe: String) -> anyhow::Result<()> {
 fn usage(argv0: &str) -> ! {
     eprintln!(
         r#"Usage: {} [switch|boot|test|dry-activate]
-switch:       make the configuration the boot default and activate now
-boot:         make the configuration the boot default
-test:         activate the configuration, but don't make it the boot default
-dry-activate: show what would be done if this configuration were activated
+Consider calling `apply` instead of `switch-to-configuration`.
 "#,
         argv0
     );