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nixos/switchable-system: improvements to switch inhibitors (#477561)

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Ramses
2026-01-06 22:46:02 +00:00
committed by GitHub
parent 3b47e079d4 a998d196ab
commit 193f7b949f
1 changed files with 56 additions and 54 deletions
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nixos/modules/system/activation/switchable-system.nix
+56 -54
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@@ -78,67 +78,69 @@
sha256sum = lib.getExe' pkgs.coreutils "sha256sum";
diff = lib.getExe' pkgs.diffutils "diff";
in
# bash
''
incoming="''${1-}"
action="''${2-}"
lib.mkIf (lib.length config.system.switch.inhibitors > 0)
# bash
''
incoming="''${1-}"
action="''${2-}"
if [ "$action" == "boot" ]; then
echo "Not checking switch inhibitors (action = $action)"
exit
fi
echo -n "Checking switch inhibitors..."
booted_inhibitors="$(${realpath} /run/booted-system)/switch-inhibitors"
booted_inhibitors_sha="$(
if [ -f "$booted_inhibitors" ]; then
${sha256sum} - < "$booted_inhibitors"
else
echo 'none'
if [ "$action" == "boot" ]; then
echo "Not checking switch inhibitors (action = $action)"
exit
fi
)"
if [ "$booted_inhibitors_sha" == "none" ]; then
echo
echo "The previous configuration did not specify switch inhibitors, nothing to check."
exit
fi
echo -n "Checking switch inhibitors..."
new_inhibitors="$(${realpath} "$incoming")/switch-inhibitors"
new_inhibitors_sha="$(
if [ -f "$new_inhibitors" ]; then
${sha256sum} - < "$new_inhibitors"
else
echo 'none'
booted_inhibitors="$(${realpath} /run/booted-system)/switch-inhibitors"
booted_inhibitors_sha="$(
if [ -f "$booted_inhibitors" ]; then
${sha256sum} - < "$booted_inhibitors"
else
echo 'none'
fi
)"
if [ "$booted_inhibitors_sha" == "none" ]; then
echo
echo "The previous configuration did not specify switch inhibitors, nothing to check."
exit
fi
)"
if [ "$new_inhibitors_sha" == "none" ]; then
echo
echo "The new configuration does not specify switch inhibitors, nothing to check."
exit
fi
new_inhibitors="$(${realpath} "$incoming")/switch-inhibitors"
new_inhibitors_sha="$(
if [ -f "$new_inhibitors" ]; then
${sha256sum} - < "$new_inhibitors"
else
echo 'none'
fi
)"
if [ "$new_inhibitors_sha" != "$booted_inhibitors_sha" ]; then
echo
echo "Found diff in switch inhibitors:"
echo
${diff} --color "$booted_inhibitors" "$new_inhibitors"
echo
echo "The new configuration contains changes to packages that were"
echo "listed as switch inhibitors."
echo
echo "If you really want to switch into this configuration directly, then"
echo "you can set NIXOS_NO_CHECK=1 to ignore these pre-switch checks."
echo
echo "WARNING: doing so might cause the switch to fail or your system to become unstable."
echo
exit 1
else
echo " done"
fi
'';
if [ "$new_inhibitors_sha" == "none" ]; then
echo
echo "The new configuration does not specify switch inhibitors, nothing to check."
exit
fi
if [ "$new_inhibitors_sha" != "$booted_inhibitors_sha" ]; then
echo
echo "Found diff in switch inhibitors:"
echo
${diff} --color "$booted_inhibitors" "$new_inhibitors"
echo
echo "The new configuration contains changes to packages that were"
echo "listed as switch inhibitors."
echo "You probably want to run 'nixos-rebuild boot' and reboot your system."
echo
echo "If you really want to switch into this configuration directly, then"
echo "you can set NIXOS_NO_CHECK=1 to ignore pre-switch checks."
echo
echo "WARNING: doing so might cause the switch to fail or your system to become unstable."
echo
exit 1
else
echo " done"
fi
'';
};
};
}