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authorGraham Christensen <graham@grahamc.com>2018-04-19T17·37-0400
committerGraham Christensen <graham@grahamc.com>2018-04-19T17·45-0400
commit17b158af85296c1c815af237cf5626e79b6b0a70 (patch)
tree6362793b32d65c961035758467606696cde22073
parenta99027d5870a772db550f741cb62aee612fcd5da (diff)
installer: allow opting in / out to the daemon installer
By passing --daemon or --no-daemon, the installer can be forced to
select one or the other installation options, despite what the
automatic detection can provide.

This commit can be backported to 2.0-maintenance because it explicitly
turns off the daemon installation for Linux under systemd.
-rw-r--r--scripts/install-nix-from-closure.sh37
1 files changed, 31 insertions, 6 deletions
diff --git a/scripts/install-nix-from-closure.sh b/scripts/install-nix-from-closure.sh
index 8416fb9673b5..4d01eb589c81 100644
--- a/scripts/install-nix-from-closure.sh
+++ b/scripts/install-nix-from-closure.sh
@@ -28,14 +28,39 @@ if [ "$(uname -s)" = "Darwin" ]; then
         echo "$0: macOS $(sw_vers -productVersion) is not supported, upgrade to 10.10 or higher"
         exit 1
     fi
-
-    printf '\e[1;31mSwitching to the Daemon-based Installer\e[0m\n'
-    exec "$self/install-multi-user"
-    exit 0
 fi
 
-# Linux & Systemd support
-if [ "$(uname -s)" = "Linux" ] && [ -e /run/systemd/system ]; then
+# Determine if we should punt to the single-user installer or not
+if [ "$(uname -s)" = "Darwin" ]; then
+    INSTALL_MODE=daemon
+elif [ "$(uname -s)" = "Linux" ] && [ -e /run/systemd/system ]; then
+    INSTALL_MODE=no-daemon
+else
+    INSTALL_MODE=no-daemon
+fi
+
+# Trivially handle the --daemon / --no-daemon options
+if [ "x${1:-}" = "x--no-daemon" ]; then
+    INSTALL_MODE=no-daemon
+elif [ "x${1:-}" = "x--daemon" ]; then
+    INSTALL_MODE=daemon
+elif [ "x${1:-}" != "x" ]; then
+    (
+        echo "Nix Installer [--daemon|--no-daemon]"
+        echo ""
+        echo " --daemon:    Force the installer to use the Daemon"
+        echo "              based installer, even though it may not"
+        echo "              work."
+        echo ""
+        echo " --no-daemon: Force a no-daemon, single-user"
+        echo "              installation even when the preferred"
+        echo "              method is with the daemon."
+        echo ""
+    ) >&2
+    exit
+fi
+
+if [ "$INSTALL_MODE" = "daemon" ]; then
     printf '\e[1;31mSwitching to the Daemon-based Installer\e[0m\n'
     exec "$self/install-multi-user"
     exit 0