ci: add CI for OpenBSD (#24732)

ci/openbsd_ci.vsh

@@ -0,0 +1,59 @@
+import os
+import common { Task, exec }
+
+fn v_doctor() {
+	dump(os.getenv('PATH'))
+	exec('v doctor')
+	if common.is_github_job {
+		exec('uname -mrs')
+		exec('sysctl hw.model')
+		exec('sysctl hw.ncpu')
+		exec('sysctl hw.physmem')
+		exec('sysctl hw.usermem')
+		exec('whoami')
+		exec('pwd')
+		exec('ls -la')
+		exec('git log -n1')
+		exec('cc --version')
+	}
+}
+
+fn verify_v_test_works() {
+	exec('echo \$VFLAGS')
+	exec('v cmd/tools/test_if_v_test_system_works.v')
+	exec('./cmd/tools/test_if_v_test_system_works')
+}
+
+fn build_fast_script() {
+	exec('cd cmd/tools/fast && v fast.v')
+}
+
+fn check_math() {
+	exec('v -silent test vlib/math')
+	println('Test the math module, using only the pure V versions,')
+	println('                          without the .c.v overrides.')
+	exec('v -silent -exclude @vlib/math/*.c.v test vlib/math')
+}
+
+fn check_compress() {
+	exec('v -silent test vlib/compress')
+}
+
+fn run_essential_tests() {
+	if common.is_github_job {
+		exec('VTEST_JUST_ESSENTIAL=1 v -silent test-self')
+	} else {
+		exec('VTEST_JUST_ESSENTIAL=1 v -progress test-self')
+	}
+}
+
+const all_tasks = {
+	'v_doctor':            Task{v_doctor, 'Run v doctor'}
+	'verify_v_test_works': Task{verify_v_test_works, 'Verify that v test works'}
+	'build_fast_script':   Task{build_fast_script, 'Check that building fast.v works'}
+	'check_math':          Task{check_math, 'Check the `math` module works'}
+	'check_compress':      Task{check_compress, 'Check the `compress` module works'}
+	'run_essential_tests': Task{run_essential_tests, 'Run only the essential tests'}
+}
+
+common.run(all_tasks)