internal/ci: switch to '.yaml' workflow file extension

This alignment with the filetype 'yaml' makese logic elsewhere simpler.
Specifically the `@export`-like behaviour of writefs in
https://cuelang.org/cl/1200710.

Also update the base earlyChecks declaration to default to a
pseudo-version of the main CUE repo. This allows an override in this
repo to use the "current" earlyChecks package. This allows the base
package to be "copied" (for now) to other repos without further
changes/overrides.

Signed-off-by: Paul Jolly <paul@myitcv.io>
Change-Id: If0a3c1c1d392782c25b3f15f0d75ff32cbc6933c
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1200723
TryBot-Result: CUEcueckoo <cueckoo@cuelang.org>
Unity-Result: CUE porcuepine <cue.porcuepine@gmail.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>

.github/workflows/evict_caches.yml → .github/workflows/evict_caches.yaml

@@ -89,7 +89,7 @@ jobs:
           		echo Latest commit: $sha
 
           		echo "Trigger workflow on cue-lang/cue"
-          		curl -s -L -H "Accept: application/vnd.github+json" -H "Authorization: Bearer ${{ secrets.CUECKOO_GITHUB_PAT }}" -H "X-GitHub-Api-Version: 2022-11-28" --fail-with-body -X POST https://api.github.com/repos/cue-lang/cue/actions/workflows/trybot.yml/dispatches -d "{\"ref\":\"$j\"}"
+          		curl -s -L -H "Accept: application/vnd.github+json" -H "Authorization: Bearer ${{ secrets.CUECKOO_GITHUB_PAT }}" -H "X-GitHub-Api-Version: 2022-11-28" --fail-with-body -X POST https://api.github.com/repos/cue-lang/cue/actions/workflows/trybot.yaml/dispatches -d "{\"ref\":\"$j\"}"
 
           		# Ensure that the trybot repo has the latest commit for
           		# this branch.  If the force-push results in a commit
@@ -121,7 +121,7 @@ jobs:
           			# We are up-to-date, i.e. the push did nothing, hence we need to trigger a workflow_dispatch
           			# in the trybot repo.
           			echo "Trigger workflow on cue-lang/cue-trybot"
-          			curl -s -L -H "Accept: application/vnd.github+json" -H "Authorization: Bearer ${{ secrets.CUECKOO_GITHUB_PAT }}" -H "X-GitHub-Api-Version: 2022-11-28" --fail-with-body -X POST https://api.github.com/repos/cue-lang/cue-trybot/actions/workflows/trybot.yml/dispatches -d "{\"ref\":\"$j\"}"
+          			curl -s -L -H "Accept: application/vnd.github+json" -H "Authorization: Bearer ${{ secrets.CUECKOO_GITHUB_PAT }}" -H "X-GitHub-Api-Version: 2022-11-28" --fail-with-body -X POST https://api.github.com/repos/cue-lang/cue-trybot/actions/workflows/trybot.yaml/dispatches -d "{\"ref\":\"$j\"}"
           		else
           			echo "Force-push to cue-lang/cue-trybot did work; nothing to do"
           		fi

internal/ci/base/base.cue

@@ -55,7 +55,7 @@ botGerritHubUser:                   *botGitHubUser | string
 botGerritHubUserPasswordSecretsKey: *(strings.ToUpper(botGitHubUser) + "_GERRITHUB_PASSWORD") | string
 botGerritHubUserEmail:              *botGitHubUserEmail | string
 
-workflowFileExtension: ".yml"
+workflowFileExtension: ".yaml"
 
 linuxMachine: string
 

internal/ci/base/github.cue

@@ -137,7 +137,7 @@ checkoutCode: {
 
 earlyChecks: json.#step & {
 	name: "Early git and code sanity checks"
-	run:  "go run ./internal/ci/checks"
+	run:  *"go run cuelang.org/go/internal/ci/checks@v0.11.0-0.dev.0.20240903133435-46fb300df650" | string
 }
 
 curlGitHubAPI: {

internal/ci/repo/repo.cue

@@ -9,6 +9,8 @@ import (
 
 base
 
+earlyChecks: run: "go run ./internal/ci/checks"
+
 githubRepositoryPath: "cue-lang/cue"
 
 unityRepositoryPath: "cue-unity/unity-private"