mirror of
https://github.com/NiklasGollenstede/nixos-installer.git
synced 2024-11-25 09:23:10 +01:00
39 lines
2.0 KiB
Nix
39 lines
2.0 KiB
Nix
|
dirname: inputs@{ self, nixpkgs, ...}: let
|
||
|
|
inherit (nixpkgs) lib;
|
||
|
|
inherit (import "${dirname}/vars.nix" dirname inputs) startsWith;
|
||
|
|
in rec {
|
||
|
|
|
||
|
|
## Logic Flow
|
||
|
|
|
||
|
|
notNull = value: value != null;
|
||
|
|
|
||
|
|
ifNull = value: default: (if value == null then default else value);
|
||
|
|
withDefault = default: value: (if value == null then default else value);
|
||
|
|
passNull = mayNull: expression: (if mayNull == null then null else expression);
|
||
|
|
|
||
|
|
|
||
|
|
## Misc
|
||
|
|
|
||
|
|
# Creates a package for `config.systemd.packages` that adds an `override.conf` to the specified `unit` (which is the only way to modify a single service template instance).
|
||
|
|
mkSystemdOverride = pkgs: unit: text: (pkgs.runCommandNoCC unit { preferLocalBuild = true; allowSubstitutes = false; } ''
|
||
|
|
mkdir -p $out/${lib.escapeShellArg "/etc/systemd/system/${unit}.d/"}
|
||
|
|
<<<${lib.escapeShellArg text} cat >$out/${lib.escapeShellArg "/etc/systemd/system/${unit}.d/override.conf"}
|
||
|
|
'');
|
||
|
|
|
||
|
|
# Given »config.ids« (or equivalent) and a user name, returns the users numeric »uid:gid« pair as string.
|
||
|
|
getOwnership = { gids, uids, ... }: user: "${toString uids.${user}}:${toString gids.${user}}";
|
||
|
|
|
||
|
|
# Given »from« and »to« as »config.my.network.spec.hosts.*«,
|
||
|
|
# picks the first of »to«'s IPs whose required subnet is either empty/any, or a prefix to any of the subnets in »from«:
|
||
|
|
# ip = preferredRoute self.subNets other.routes;
|
||
|
|
# ip6 = preferredRoute self.subNets (builtins.filter (r: r.is6) other.routes);
|
||
|
|
# to.find(({ ip, prefix }) => from.any(_=>_.startsWith(prefix))).ip
|
||
|
|
preferredRoute = from: to: (lib.findFirst ({ prefix, ip, ... }: prefix == "" || (builtins.any (fromSub: startsWith prefix fromSub) from)) { ip = ""; } to).ip;
|
||
|
|
|
||
|
|
# Given a message and any value, traces both the message and the value, and returns the value.
|
||
|
|
trace = lib: message: value: (builtins.trace (message +": "+ (lib.generators.toPretty { } value)) value);
|
||
|
|
|
||
|
|
rpoolOf = hostName: "rpool-${builtins.substring 0 8 (builtins.hashString "sha256" hostName)}";
|
||
|
|
|
||
|
|
}
|