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users: realpath home dirs before comparison

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When we create users with homedir under /var, they end up with
NFSHomeDirectory under /private/var because /var is a symlink. This
breaks consequent activations and requires that user overrides their
home dir attribute with /private/var/... to pass the activation
precheck.

`realpath` should normalize the discrepancy.
This commit is contained in:
Ihar Hrachyshka 2026-06-14 20:43:51 -10:00
parent aabb2037ed
commit 08278afff6
1 changed files with 3 additions and 1 deletions
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4
modules/users/default.nix
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@ -203,7 +203,9 @@ in
else
homeDirectory=$(dscl . -read ${dsclUser} NFSHomeDirectory)
homeDirectory=''${homeDirectory#NFSHomeDirectory: }
if [[ ${escapeShellArg v.home} != "$homeDirectory" ]]; then
configuredHomeDirectory=$(realpath ${escapeShellArg v.home})
homeDirectory=$(realpath "$homeDirectory")
if [[ "$configuredHomeDirectory" != "$homeDirectory" ]]; then
printf >&2 '\e[1;31merror: config contains the wrong home directory for %s, aborting activation\e[0m\n' ${name}
printf >&2 'nix-darwin does not support changing the home directory of existing users.\n'
printf >&2 '\n'