wrap: move FeatureNew checks to a more natural place

Now, warnings are unconditionally raised when parsing the wrap file,
whether they are used or not. That being said, these warnings literally
just check for a couple of keys used in the .wrap ini file.

Moving these checks from the time of use to the time of loading, means
that we no longer report warnings only when originally downloading or
extracting the file or VCS repo.

It also means we no longer report warnings in one subproject, when a
wrap file is picked up from a different subproject because the first
subproject actually does a dependency lookup. This caused issues for the
WrapDB tooling, which uses patch_directory everywhere and the
superproject requires a suitable minimum version of meson for this...
but individual wraps might use a much lower version, and would then
raise a warning (in strict mode, converted to an error) when it resolved
a dependency from another WrapDB project.

Fixes #9118

mesonbuild/interpreter/interpreter.py

@@ -799,7 +799,7 @@ external dependencies (including libraries) must go to "dependencies".''')
 
         r = self.environment.wrap_resolver
         try:
-            subdir = r.resolve(subp_name, method, self.subproject)
+            subdir = r.resolve(subp_name, method)
         except wrap.WrapException as e:
             if not required:
                 mlog.log(e)
@@ -1107,7 +1107,7 @@ external dependencies (including libraries) must go to "dependencies".''')
         wrap_mode = self.coredata.get_option(OptionKey('wrap_mode'))
         if not self.is_subproject() or wrap_mode != WrapMode.nopromote:
             subdir = os.path.join(self.subdir, spdirname)
-            r = wrap.Resolver(self.environment.get_source_dir(), subdir, wrap_mode)
+            r = wrap.Resolver(self.environment.get_source_dir(), subdir, self.subproject, wrap_mode)
             if self.is_subproject():
                 self.environment.wrap_resolver.merge_wraps(r)
             else:

mesonbuild/wrap/wrap.py

@@ -32,6 +32,7 @@ from pathlib import Path
 from . import WrapMode
 from .. import coredata
 from ..mesonlib import quiet_git, GIT, ProgressBar, MesonException
+from ..interpreterbase import FeatureNew
 from  .. import mesonlib
 
 if T.TYPE_CHECKING:
@@ -90,8 +91,9 @@ class WrapNotFoundException(WrapException):
     pass
 
 class PackageDefinition:
-    def __init__(self, fname: str):
+    def __init__(self, fname: str, subproject: str = ''):
         self.filename = fname
+        self.subproject = subproject
         self.type = None  # type: T.Optional[str]
         self.values = {} # type: T.Dict[str, str]
         self.provided_deps = {} # type: T.Dict[str, T.Optional[str]]
@@ -141,8 +143,14 @@ class PackageDefinition:
             self.filename = str(fname)
             self.parse_wrap()
             self.redirected = True
-            return
+        else:
             self.parse_provide_section(config)
+        if 'patch_directory' in self.values:
+            FeatureNew('Wrap files with patch_directory', '0.55.0').use(self.subproject)
+        for what in ['patch', 'source']:
+            if f'{what}_filename' in self.values and f'{what}_url' not in self.values:
+                FeatureNew(f'Local wrap patch files without {what}_url', '0.55.0').use(self.subproject)
+
 
     def parse_wrap_section(self, config: configparser.ConfigParser) -> None:
         if len(config.sections()) < 1:
@@ -197,9 +205,10 @@ def verbose_git(cmd: T.List[str], workingdir: str, check: bool = False) -> bool:
         raise WrapException(str(e))
 
 class Resolver:
-    def __init__(self, source_dir: str, subdir: str, wrap_mode: WrapMode = WrapMode.default) -> None:
+    def __init__(self, source_dir: str, subdir: str, subproject: str = '', wrap_mode: WrapMode = WrapMode.default) -> None:
         self.source_dir = source_dir
         self.subdir = subdir
+        self.subproject = subproject
         self.wrap_mode = wrap_mode
         self.subdir_root = os.path.join(source_dir, subdir)
         self.cachedir = os.path.join(self.subdir_root, 'packagecache')
@@ -216,7 +225,7 @@ class Resolver:
             if not i.endswith('.wrap'):
                 continue
             fname = os.path.join(self.subdir_root, i)
-            wrap = PackageDefinition(fname)
+            wrap = PackageDefinition(fname, self.subproject)
             self.wraps[wrap.name] = wrap
             if wrap.directory in dirs:
                 dirs.remove(wrap.directory)
@@ -225,7 +234,7 @@ class Resolver:
             if i in ['packagecache', 'packagefiles']:
                 continue
             fname = os.path.join(self.subdir_root, i)
-            wrap = PackageDefinition(fname)
+            wrap = PackageDefinition(fname, self.subproject)
             self.wraps[wrap.name] = wrap
 
         for wrap in self.wraps.values():
@@ -271,8 +280,7 @@ class Resolver:
                 return wrap.name
         return None
 
-    def resolve(self, packagename: str, method: str, current_subproject: str = '') -> str:
-        self.current_subproject = current_subproject
+    def resolve(self, packagename: str, method: str) -> str:
         self.packagename = packagename
         self.directory = packagename
         self.wrap = self.wraps.get(packagename)
@@ -554,8 +562,6 @@ class Resolver:
             self.download(what, cache_path)
             return cache_path
         else:
-            from ..interpreterbase import FeatureNew
-            FeatureNew(f'Local wrap patch files without {what}_url', '0.55.0').use(self.current_subproject)
             path = Path(self.wrap.filesdir) / filename
 
             if not path.exists():
@@ -577,8 +583,6 @@ class Resolver:
                     shutil.unpack_archive(path, workdir)
                     self.copy_tree(workdir, self.subdir_root)
         elif 'patch_directory' in self.wrap.values:
-            from ..interpreterbase import FeatureNew
-            FeatureNew('patch_directory', '0.55.0').use(self.current_subproject)
             patch_dir = self.wrap.values['patch_directory']
             src_dir = os.path.join(self.wrap.filesdir, patch_dir)
             if not os.path.isdir(src_dir):