liminix/pkgs/s6-rc-database/default.nix
Daniel Barlow 2fb4756a7f add soft restart option to liminix-rebuild
instead of doing a full reboot, it runs activate / and uses
s6-rc-update to install the new service database
2024-03-28 23:45:10 +00:00

42 lines
1.1 KiB
Nix

# generate s6-rc database, by generating closure of all
# config.services and calling s6-rc-compile on them
{
stdenvNoCC
, buildPackages
, closureInfo
, writeText
, services ? []
}:
let closure-info = closureInfo { rootPaths = services; };
in stdenvNoCC.mkDerivation {
name = "s6-rc-database";
nativeBuildInputs = [buildPackages.s6-rc];
builder = writeText "find-s6-services" ''
source $stdenv/setup
mkdir -p $out
srcs=""
shopt -s nullglob
for i in $(cat ${closure-info}/store-paths ); do
if test -d $i; then
for j in $i/* ; do
if test -f $j/type ; then
case $(cat $j/type) in
longrun|oneshot)
# s6-rc-update only wants oneshots in its
# restarts file
echo $(basename $j) " " $i >> $out/hashes
;;
*)
;;
esac
srcs="$srcs $i"
fi
done
fi
done
s6-rc-compile $out/compiled $srcs
s6-rc-db -c $out/compiled contents default
mv $out/hashes $out/compiled
'';
}