pmb.{config, helpers, install}: add _pmb_default support (MR 2301)

pmb/config/__init__.py

@@ -238,6 +238,9 @@ apkbuild_package_attributes = {
     # additional configuration options in "pmbootstrap init" that allow
     # selecting alternative providers for a virtual APK package.
     "_pmb_select": {"array": True},
+    # postmarketos-base and UI meta-packages can define the default package
+    # to select during "_pmb_select".
+    "_pmb_default": {"array": True},
 }
 
 # Variables in APKBUILD files that get parsed

pmb/config/init.py

@@ -281,7 +281,7 @@ def ask_for_provider_select(apkbuild, providers_cfg) -> None:
                           providers. Updated with new providers after selection
     """
     for select in apkbuild["_pmb_select"]:
-        providers = pmb.helpers.pmaports.find_providers(select)
+        providers = pmb.helpers.pmaports.find_providers(select, apkbuild["_pmb_default"])
         logging.info(f"Available providers for {select} ({len(providers)}):")
 
         has_default = False

pmb/helpers/pmaports.py

@@ -248,12 +248,13 @@ def get(pkgname, must_exist=True, subpackages=True, skip_extra_repos=False) -> d
     return get_with_path(pkgname, must_exist, subpackages, skip_extra_repos)[1]
 
 
-def find_providers(provide):
+def find_providers(provide, default):
     """Search for providers of the specified (virtual) package in pmaports.
 
     Note: Currently only providers from a single APKBUILD are returned.
 
     :param provide: the (virtual) package to search providers for
+    :param default: the _pmb_default to look through for defaults
     :returns: tuple list (pkgname, apkbuild_pkg) with providers, sorted by
               provider_priority. The provider with the highest priority
               (which would be selected by default) comes first.
@@ -266,6 +267,8 @@ def find_providers(provide):
         for provides in subpkg["provides"]:
             # Strip provides version (=$pkgver-r$pkgrel)
             if provides.split("=", 1)[0] == provide:
+                if subpkgname in default:
+                    subpkg["provider_priority"] = 999
                 providers[subpkgname] = subpkg
 
     return sorted(providers.items(), reverse=True, key=lambda p: p[1].get("provider_priority", 0))

pmb/install/_install.py

@@ -1168,6 +1168,10 @@ def get_selected_providers(args: PmbArgs, packages):
             if select in get_context().config.providers:
                 ret += [get_context().config.providers[select]]
                 logging.verbose(f"{package}: install selected_providers:" f" {', '.join(ret)}")
+            else:
+                for default in apkbuild["_pmb_default"]:
+                    if select == default[: default.rfind("-")]:
+                        ret += [default]
         # Also iterate through dependencies to collect any providers they have
         depends = apkbuild["depends"]
         if depends: