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systemd: replace use of who command

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Curiously the `who` command sometimes does not list logged-in users,
resulting in systemd not being reloaded. Instead we use

    systemctl --user is-system-running

to more directly detect whether systemd is running.
This commit is contained in:
Robert Helgesson 2018-02-18 16:39:28 +01:00
parent 4745c7a00d
commit e307ceeee7
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GPG key ID: C3DB11069E65DC86
1 changed files with 5 additions and 3 deletions
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8
modules/systemd.nix
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@ -159,14 +159,16 @@ in
legacyReloadCmd = ''
bash ${./systemd-activate.sh} "''${oldGenPath=}" "$newGenPath"
'';
ensureRuntimeDir = "XDG_RUNTIME_DIR=\${XDG_RUNTIME_DIR:-/run/user/$(id -u)}";
in
''
if who | grep -q '^${config.home.username} '; then
XDG_RUNTIME_DIR=''${XDG_RUNTIME_DIR:-/run/user/$(id -u)} \
if ${ensureRuntimeDir} ${cfg.systemctlPath} --quiet --user is-system-running 2> /dev/null; then
${ensureRuntimeDir} \
PATH=${dirOf cfg.systemctlPath}:$PATH \
${if cfg.startServices then autoReloadCmd else legacyReloadCmd}
else
echo "User ${config.home.username} not logged in. Skipping."
echo "User systemd daemon not running. Skipping reload."
fi
''
);