From 7e45f16948a802a3810d915b315f810f83fe8900 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Karel=20Ko=C4=8D=C3=AD?= <cynerd@email.cz>
Date: Tue, 11 Oct 2022 13:15:50 +0200
Subject: hosts.sh: support not only devices and use screen to detach switch

---
 nixos/modules/generic.nix     |  5 +++++
 nixos/modules/nixos-system.sh | 27 +++++++++++++++++++++++++++
 2 files changed, 32 insertions(+)
 create mode 100644 nixos/modules/nixos-system.sh

(limited to 'nixos')

diff --git a/nixos/modules/generic.nix b/nixos/modules/generic.nix
index ff635cf..fb2879c 100644
--- a/nixos/modules/generic.nix
+++ b/nixos/modules/generic.nix
@@ -131,6 +131,11 @@ in {
         '';
       })
     ];
+
+    system.extraSystemBuilderCmds = ''
+      substituteAll ${./nixos-system.sh} $out/bin/nixos-system
+      chmod +x $out/bin/nixos-system
+    '';
   };
 
 }
diff --git a/nixos/modules/nixos-system.sh b/nixos/modules/nixos-system.sh
new file mode 100644
index 0000000..7a220bb
--- /dev/null
+++ b/nixos/modules/nixos-system.sh
@@ -0,0 +1,27 @@
+#!@shell@
+# Simple script handy to be used for activation
+
+while getopts "s" opt; do
+	case "$opt" in
+		s)
+			if [ ! -v NIXOS_SYSTEM_GNU_SCREEN ]; then
+				export NIXOS_SYSTEM_GNU_SCREEN=1
+				exec @out@/sw/bin/screen "$0" "$@"
+			fi
+			;;
+		*)
+			echo "Invalid argument: $1" >&2
+			exit 1
+			;;
+	esac
+done
+shift $((OPTIND - 1))
+
+
+@out@/sw/bin/nix-env --profile /nix/var/nix/profiles/system --set '@out@'
+
+@out@/bin/switch-to-configuration "$@" || {
+	echo "Switch failed!" >&2
+	read -r _
+	exit 1
+}
-- 
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