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feat(nix/buildkite): Add parentOverride argument to extra steps

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This can be used to override the parent derivation if its output is
required, for example to inject versions which are only used during
releases to avoid cache-busting.

Change-Id: I2211496efa8f9bc98ea43b23e4f3f92c61a6da73
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5184
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: ezemtsov <eugene.zemtsov@gmail.com>
This commit is contained in:
Vincent Ambo 2022-02-02 12:22:58 +03:00 committed by tazjin
parent ba7197c271
commit bb140e16a2
1 changed files with 23 additions and 9 deletions
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32
nix/buildkite/default.nix
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@ -159,6 +159,13 @@ rec {
let
step = mkStep headBranch parentTargetMap target;
# Same step, but with an override function applied. This is
# used in mkExtraStep if the extra step needs to modify the
# parent derivation somehow.
#
# Note that this will never affect the label.
overridable = f: mkStep headBranch parentTargetMap (f target);
# Split build/post-build steps
splitExtraSteps = partition ({ postStep, ... }: postStep)
(attrValues (mapAttrs
@ -168,7 +175,7 @@ rec {
})
(target.meta.ci.extraSteps or { })));
mkExtraStep' = { name, value, ... }: mkExtraStep step name value;
mkExtraStep' = { name, value, ... }: mkExtraStep overridable name value;
extraBuildSteps = map mkExtraStep' splitExtraSteps.wrong; # 'wrong' -> no prompt
extraPostSteps = map mkExtraStep' splitExtraSteps.right; # 'right' -> has prompt
in
@ -260,6 +267,10 @@ rec {
# command. Output will be available as 'result'.
# TODO: Figure out multiple-output derivations.
#
# parentOverride (optional): A function (drv -> drv) to override
# the parent's target definition when preparing its output. Only
# used in extra steps that use needsOutput.
#
# branches (optional): Git references (branches, tags ... ) on
# which this step should be allowed to run. List of strings.
#
@ -291,15 +302,18 @@ rec {
# Create the Buildkite configuration for an extra step, optionally
# wrapping it in a gate group.
mkExtraStep = parent: key: { command
, label ? key
, prompt ? false
, needsOutput ? false
, branches ? null
, alwaysRun ? false
, postBuild ? false
}@cfg:
mkExtraStep = overridableParent: key:
{ command
, label ? key
, prompt ? false
, needsOutput ? false
, parentOverride ? (x: x)
, branches ? null
, alwaysRun ? false
, postBuild ? false
}@cfg:
let
parent = overridableParent parentOverride;
parentLabel = parent.env.READTREE_TARGET;
step = {