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|
{ config, lib, pkgs, ... }:
with lib;
let
text = import ../lib/write-text.nix {
inherit lib;
mkTextDerivation = name: text: pkgs.writeText "etc-${name}" text;
};
hasDir = path: length (splitString "/" path) > 1;
etc = filter (f: f.enable) (attrValues config.environment.etc);
etcDirs = filter (attr: hasDir attr.target) (attrValues config.environment.etc);
in
{
options = {
environment.etc = mkOption {
type = types.loaOf (types.submodule text);
default = {};
description = ''
Set of files that have to be linked in <filename>/etc</filename>.
'';
};
};
config = {
system.build.etc = pkgs.runCommand "etc" {} ''
mkdir -p $out/etc
cd $out/etc
${concatMapStringsSep "\n" (attr: "mkdir -p $(dirname '${attr.target}')") etc}
${concatMapStringsSep "\n" (attr: "ln -s '${attr.source}' '${attr.target}'") etc}
'';
system.activationScripts.etc.text = ''
# Set up the statically computed bits of /etc.
echo "setting up /etc..." >&2
ln -sfn "$(readlink -f $systemConfig/etc)" /etc/static
for f in $(find /etc/static/* -type l); do
l="$(echo $f | sed 's,/etc/static/,/etc/,')"
d="$(dirname $l)"
if [ ! -e "$d" ]; then
mkdir -p "$d"
fi
if [ -e "$l" ]; then
if [ "$(readlink $l)" != "$f" ]; then
echo "warning: not linking $l because $l exists, skipping..." >&2
fi
else
ln -s "$f" "$l"
fi
done
for l in $(find /etc/* -type l 2> /dev/null); do
f="$(echo $l | sed 's,/etc/,/etc/static/,')"
if [ "$(readlink $l)" = "$f" -a ! -e "$(readlink -f $l)" ]; then
rm "$l"
fi
done
'';
};
}
|
