internal/ci: move workflow declarations to their own package

In preparation for also specifying our GoReleaser configuration in CUE,
move the GitHub actions workflow declarations to their own package in
./internal/ci/github.

For now we continue to avoid placing this project-level configuration at
the root of the module for hygiene reasons (i.e. keeps the root of the
repository looking clean in GitHub and elsewhere, not littered with
files) but we might consider this if the pattern of having project level
configuration in a sub-directory becomes too strained.

Signed-off-by: Paul Jolly <[email protected]>
Change-Id: I9816dac147e1826166eaac74b4e3c3d90f433e54
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/540683
Reviewed-by: Daniel Martí <[email protected]>
Unity-Result: CUEcueckoo <[email protected]>
TryBot-Result: CUEcueckoo <[email protected]>

internal/ci/ci_tool.cue

@@ -18,6 +18,8 @@ import (
 	"path"
 	"encoding/yaml"
 	"tool/file"
+
+	"cuelang.org/go/internal/ci/github"
 )
 
 // For the commands below, note we use simple yet hacky path resolution, rather
@@ -35,7 +37,7 @@ import (
 command: genworkflows: {
 	_goos: string @tag(os,var=os)
 
-	for w in workflows {
+	for w in github.workflows {
 		"\(w.file)": file.Create & {
 			_dir:     path.FromSlash("../../.github/workflows", path.Unix)
 			filename: path.Join([_dir, w.file], _goos)

internal/ci/workflows.cue → internal/ci/github/workflows.cue

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package ci
+package github
 
 import (
 	"github.com/SchemaStore/schemastore/src/schemas/json"
@@ -420,7 +420,7 @@ _#goCheck: _#step & {
 	// dependencies that vary wildly between platforms.
 	// For now, to save CI resources, just run the checks on one matrix job.
 	// TODO: consider adding more checks as per https://github.com/golang/go/issues/42119.
-	if: "matrix.go-version == '\(_#latestStableGo)' && matrix.os == '\(_#linuxMachine)'"
+	if:   "matrix.go-version == '\(_#latestStableGo)' && matrix.os == '\(_#linuxMachine)'"
 	name: "Check"
 	run:  "go vet ./..."
 }