kconfig check: allow skip with !pmb:kconfigcheck (!1753)

Ignore APKBUILDs that have "!pmb:kconfigcheck" in their options by
default in "pmbootstrap kconfig check", but print a note that they have
been skipped. Check all kernels with "pmbootstrap kconfig check -f".

This is necessary, because the Librem 5 devboard kernel's config does
not have CONFIG_DM_CRYPT enabled in their config, and we check for
that. As the device is still under heavy development, we will make our
lives easier by just using the upstream kernel config without any
changes and ignoring it in our check by default.

pmb/helpers/frontend.py

@@ -252,8 +252,15 @@ def kconfig(args):
 
         # Iterate over all kernels
         error = False
+        skipped = 0
         packages.sort()
         for package in packages:
+            if not args.force:
+                aport = pmb.helpers.pmaports.find(args, "linux-" + package)
+                apkbuild = pmb.parse.apkbuild(args, aport + "/APKBUILD")
+                if "!pmb:kconfigcheck" in apkbuild["options"]:
+                    skipped += 1
+                    continue
             if not pmb.parse.kconfig.check(args, package, details=True):
                 error = True
 
@@ -261,6 +268,9 @@ def kconfig(args):
         if error:
             raise RuntimeError("kconfig check failed!")
         else:
+            if skipped:
+                logging.info("NOTE: " + str(skipped) + " kernel(s) was skipped"
+                             " (consider 'pmbootstrap kconfig check -f')")
             logging.info("kconfig check succeded!")
     elif args.action_kconfig == "edit":
         pmb.build.menuconfig(args, args.package)

pmb/parse/arguments.py

@@ -223,6 +223,9 @@ def arguments_kconfig(subparser):
 
     # "pmbootstrap kconfig check"
     check = sub.add_parser("check", help="check kernel aport config")
+    check.add_argument("-f", "--force", action="store_true", help="check all"
+                       " kernels, even the ones that would be ignored by"
+                       " default")
     check.add_argument("--arch", choices=arch_choices, dest="arch")
     check_package = check.add_argument("package", default="", nargs='?')
     if argcomplete: