ProfilesCheck: handle incremental make.defaults values

Signed-off-by: Arthur Zamarin <arthurzam@gentoo.org>

Author: arthurzam

NEWS.rst

@@ -29,6 +29,9 @@ pkgcheck 0.10.47 (unreleased)
 - InvalidCommitTag: report ``Fixes`` and ``Reverts`` naming a blob or tree
   instead of crashing (Arthur Zamarin)
 
+- UnknownProfileUse, UnknownProfileUseExpand, UnknownProfileUseExpandValue:
+  accept ``-*`` and negated values in ``make.defaults`` (Arthur Zamarin)
+
 -----------------------------
 pkgcheck 0.10.46 (2026-09-26)
 -----------------------------

src/pkgcheck/checks/profiles.py

@@ -208,6 +208,11 @@ class ProfileError(results.ProfilesResult, results.LogError):
 _make_defaults_assign_re = re.compile(r"^[a-zA-Z][a-zA-Z0-9_]*=(?P<value>.*)$")
 
 
+def _incremental_values(value: str) -> set[str]:
+    """Values named by an incremental variable, without negations or resets."""
+    return {x.removeprefix("-") for x in value.split() if x != "-*"}
+
+
 # mapping of profile log levels to result classes
 _logmap = (
     base.LogMap("pkgcore.log.logger.warning", ProfileWarning),
@@ -405,11 +410,8 @@ def _make_defaults(self, filename: str, node: sources.ProfileNode, vals: dict[st
             if len(value) < 2 or value[0] != '"' or value[-1] != '"':
                 yield MakeDefaultsUnquoted(pjoin(node.name, filename), lineno, line)
         if (
-            use_flags := {
-                use.removeprefix("-")
-                for use_group in ("USE", "IUSE_IMPLICIT")
-                for use in vals.get(use_group, "").split()
-            }
+            use_flags := _incremental_values(vals.get("USE", ""))
+            | _incremental_values(vals.get("IUSE_IMPLICIT", ""))
         ) and (unknown := use_flags - self.available_iuse):
             yield UnknownProfileUse(pjoin(node.name, filename), unknown)
         implicit_use_expands = set(vals.get("USE_EXPAND_IMPLICIT", "").split())
@@ -418,7 +420,7 @@ def _make_defaults(self, filename: str, node: sources.ProfileNode, vals: dict[st
             "USE_EXPAND_HIDDEN",
             "USE_EXPAND_UNPREFIXED",
         ):
-            values = {use.removeprefix("-") for use in vals.get(use_group, "").split()}
+            values = _incremental_values(vals.get(use_group, ""))
             if unknown := values - self.use_expand_groups.keys() - implicit_use_expands:
                 yield UnknownProfileUseExpand(pjoin(node.name, filename), use_group, unknown)
         for key, val in vals.items():
@@ -432,7 +434,7 @@ def _make_defaults(self, filename: str, node: sources.ProfileNode, vals: dict[st
                 else:
                     yield UnknownProfileUseExpand(pjoin(node.name, filename), key, [use_group])
         for key in vals.keys() & self.use_expand_groups.keys():
-            if unknown := set(vals.get(key, "").split()) - self.use_expand_groups[key]:
+            if unknown := _incremental_values(vals[key]) - self.use_expand_groups[key]:
                 yield UnknownProfileUseExpandValue(pjoin(node.name, filename), key, unknown)
         if missing_values := {
             use_group

testdata/repos/profiledir/profiles/incremental_use/eapi

@@ -0,0 +1 @@
+7

testdata/repos/profiledir/profiles/incremental_use/make.defaults

@@ -0,0 +1,4 @@
+USE="-* used -used"
+IUSE_IMPLICIT="-* used"
+USE_EXPAND="-* PYTHON_TARGETS"
+PYTHON_TARGETS="-* -python3_10 python3_11"

testdata/repos/profiledir/profiles/profiles.desc

@@ -8,6 +8,7 @@ amd64 unknown_kwds exp
 amd64 unmatched_unmasks exp
 amd64 unknown_arch exp
 amd64 unquoted_make_defaults exp
+amd64 incremental_use exp
 
 amd64 unknown_use exp
 amd64 unknown_use/unknown_stable_use exp