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home-manager-auto-upgrade: add flake support (#8053)

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Adds the ability for the auto-upgrade service to update a Nix flake
instead of Nix channels.

This is controlled by a new `useFlake` boolean option. When enabled, the
service will run `nix flake update` in the directory specified by the
`flakeDir` option.

`flakeDir` defaults to the standard Home Manager configuration directory
(`~/.config/home-manager`), making this feature work out-of-the-box for
most users. The path is passed to the upgrade script via an environment
variable in the systemd service unit.
This commit is contained in:
Sami Haahtinen 2025-10-26 21:21:41 +00:00 • committed by GitHub
parent 2a9969b39c
commit 255b6a0ef2
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4 changed files with 70 additions and 7 deletions
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1
tests/modules/services/home-manager-auto-upgrade/default.nix
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@ -2,4 +2,5 @@
lib.optionalAttrs pkgs.stdenv.hostPlatform.isLinux {
home-manager-auto-upgrade-basic-configuration = ./basic-configuration.nix;
home-manager-auto-upgrade-flake-configuration = ./flake-configuration.nix;
}

17
tests/modules/services/home-manager-auto-upgrade/flake-configuration.nix Normal file
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@ -0,0 +1,17 @@
{
services.home-manager.autoUpgrade = {
enable = true;
frequency = "daily";
useFlake = true;
flakeDir = "/tmp/my-flake";
};
nmt.script = ''
serviceFile="home-files/.config/systemd/user/home-manager-auto-upgrade.service"
assertFileExists "$serviceFile"
assertFileRegex "$serviceFile" "FLAKE_DIR=/tmp/my-flake"
scriptPath=$(grep -oP 'ExecStart=\K.+' "$TESTED/$serviceFile")
assertFileRegex "$scriptPath" "nix flake update"
'';
}