cerulean/cerulean/nexus/nodes.nix

99 lines
2.9 KiB
Nix

# Copyright 2025 Emile Clark-Boman
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
{nt, ...}: let
inherit
(builtins)
isAttrs
mapAttrs
typeOf
;
in rec {
# abstract node instance that stores all default values
templateNode = name: system: let
inherit
(nt.naive.terminal)
Terminal
;
missing = msg: path:
Terminal (abort ''
Each Cerulean Nexus node is required to specify ${msg}!
Ensure `nexus.${path}` exists under your call to `cerulean.mkNexus`.
'');
in {
enabled = true;
system = missing "its system architecture" "system";
groups = [];
modules = [];
args = Terminal {};
base = null;
deploy = {
user = "root";
sudo = "sudo -u";
interactiveSudo = false;
remoteBuild = false; # prefer local builds for remote deploys
autoRollback = true; # reactivate previous profile if activation fails
magicRollback = true;
activationTimeout = 500; # timeout in seconds for profile activation
confirmTimeout = 30; # timeout in seconds for profile activation confirmation
ssh = {
host = name;
user = "ceru-build"; # ceru-build is the default connection user
port = 22;
opts = [];
};
};
};
parseNode = name: nodeAttrs:
if !(isAttrs nodeAttrs)
then
# fail if node is not an attribute set
abort ''
Cerulean Nexus nodes must be provided as an attribute set, got "${typeOf nodeAttrs}" instead!
Ensure all `cerulean.nexus.nodes.${name}` declarations are attribute sets under your call to `cerulean.mkNexus`.
''
else let
templateAttrs = templateNode name nodeAttrs.system;
in
nt.projectOnto templateAttrs nodeAttrs;
mapNodes = nexus: f:
nexus.nodes
|> mapAttrs (nodeName: nodeAttrs: let
node = parseNode nodeName nodeAttrs;
# use per-node base or default to nexus base
base =
if node.base != null
then node.base
else if nexus.base != null
then nexus.base
else
abort ''
Cerulean cannot construct nexus node "${nodeName}" without a base package source.
Ensure `nexus.nodes.*.base` or `nexus.base` is a flake reference to the github:NixOS/nixpkgs repository.
'';
in
f {
inherit nodeName node base;
inherit (base) lib;
});
}