CI: add `v build-tools` task to the tcc job

.github/workflows/ci.yml

@@ -40,6 +40,8 @@ jobs:
 #        ./v -silent test-compiler
     - name: Fixed tests
       run: ./v test-fixed
+    - name: Test building v tools
+      run: ./v build-tools
 #    - name: Test v binaries
 #      run: ./v -silent build-vbinaries
 

cmd/tools/modules/testing/common.v

@@ -216,6 +216,10 @@ pub fn vlib_should_be_present(parent_dir string) {
 }
 
 pub fn v_build_failing(zargs string, folder string) bool {
+	return v_build_failing_skipped(zargs, folder, [])
+}
+
+pub fn v_build_failing_skipped(zargs string, folder string, skipped []string) bool {
 	main_label := 'Building $folder ...'
 	finish_label := 'building $folder'
 	vexe := pref.vexe_path()
@@ -239,6 +243,7 @@ pub fn v_build_failing(zargs string, folder string) bool {
 		}
 	}
 	session.files << mains
+	session.skip_files << skipped
 	session.test()
 	eprintln(session.benchmark.total_message(finish_label))
 	return session.failed

cmd/tools/vbuild-tools.v

@@ -6,7 +6,11 @@ import testing
 fn main() {
 	args := os.args
 	args_string := args[1..].join(' ')
-	if testing.v_build_failing(args_string.all_before('build-tools'), 'cmd/tools') {
+	// TODO: fix cmd/tools/gen_vc.v / vweb too
+	skips := [
+		'cmd/tools/gen_vc.v'
+	]
+	if testing.v_build_failing_skipped(args_string.all_before('build-tools'), 'cmd/tools', skips) {
 		exit(1)
 	}
 }