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Support building on target nodes

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This partially addresses #33, and allows Colmena to be used more
easily on bandwidth-constrained hosts and macOS.

With `deployment.buildOnTarget = true;` deployment works fine from
macOS without designated builders, except when IFD is involved.
This commit is contained in:
Zhaofeng Li 2022-01-01 16:41:35 -08:00
parent 872f944743
commit 98897bf4de
15 changed files with 326 additions and 47 deletions
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25
src/nix/hive/eval.nix
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@ -67,6 +67,11 @@ let
See https://nixos.org/manual/nix/stable/#chap-distributed-builds
for the machine specification format.
This option is ignored when builds are initiated on the remote nodes
themselves via `deployment.buildOnTarget` or `--build-on-target`. To
still use the Nix distributed build functionality, configure the
builders on the target nodes with `nix.buildMachines`.
'';
default = null;
apply = value: if value == null then null else toString value;
@ -138,6 +143,26 @@ let
type = types.bool;
default = false;
};
buildOnTarget = lib.mkOption {
description = ''
Whether to build the system profiles on the target node itself.
When enabled, Colmena will copy the derivation to the target
node and initiate the build there. This avoids copying back the
build results involved with the native distributed build
feature. Furthermore, the `build` goal will be equivalent to
the `push` goal. Since builds happen on the target node, the
results are automatically "pushed" and won't exist in the local
Nix store.
You can temporarily override per-node settings by passing
`--build-on-target` (enable for all nodes) or
`--no-build-on-target` (disable for all nodes) on the command
line.
'';
type = types.bool;
default = false;
};
tags = lib.mkOption {
description = ''
A list of tags for the node.