[PATCH 0/7] cooker/tinfoil: fix -b bbappend handling and add single-task prepared-task API

[PATCH 0/7] cooker/tinfoil: fix -b bbappend handling and add single-task prepared-task API

[AdrianF]

From: Adrian Freihofer <adrian.freihofer@siemens.com>

Hi Richard,

Probably you remember how many attempts I tried to solve this nasty issue for
devtool ide-sdk already. I hope you consider this usage of AI as a positive
one. I also flagged these commits as AI-generated to be transparent. I also
tested them extensively with my WIP devtool ide-sdk branch.

This series makes the BitBake side of the devtool ide-sdk workflow reliable by:
1. fixing `bitbake -b` so recipe `.bbappend` files are actually applied,
2. adding a single-task execution path for already-prepared tasks, and
3. adding regression coverage for both behaviors.

It also includes two related correctness fixes:
1. setConfig now preserves boolean types (instead of turning False into
   truthy "False"),
2. include_all now ignores empty BBPATH segments to avoid false
   duplicate-include warnings.

Thanks for reviewing.

Adrian Freihofer (7):
  cooker: fix bitbake -b silently ignoring bbappends
  tests/cooker: add a bitbake -b bbappend test
  command: fix setConfig coercing bool config values to truthy strings
  cooker: add a buildFile mode that runs a single task
  tinfoil: add a prepared task runner
  tests/cooker: add TinfoilTests for run_prepared_task
  parse/ast: skip empty BBPATH segments in include_all

 lib/bb/command.py      |   8 +-
 lib/bb/cooker.py       |  14 ++-
 lib/bb/parse/ast.py    |   4 +
 lib/bb/tests/cooker.py | 211 +++++++++++++++++++++++++++++++++++++++++
 lib/bb/tinfoil.py      |  23 ++++-
 5 files changed, 253 insertions(+), 7 deletions(-)


base-commit: 2c236d8bdc51742cbc5a97e30fb126d82d4a908a
-- 
2.55.0

[PATCH 1/7] cooker: fix bitbake -b silently ignoring bbappends

[AdrianF]

From: Adrian Freihofer <adrian.freihofer@siemens.com>

"bitbake -b <recipe.bb>" builds the recipe without applying any of its
.bbappend files.

buildFileInternal() resolves appends via
self.collections[mc].get_file_appends(fn), but self.collections[mc] is
only ever filled in by collect_bbfiles(), called from updateCache() -
a path -b deliberately skips. matchFiles(), the one -b-path function
that does call collect_bbfiles(), built a fresh CookerCollectFiles into
a throwaway local instead of self.collections[mc], so the append list
stayed empty (or, on a memory-resident server, stale from the last
full parse - e.g. missing a devtool/externalsrc workspace .bbappend
added since). Nothing warns that the built metadata differs from disk.

Make matchFiles() refresh self.collections[mc] itself so the later
append lookup for the same fn sees the same fresh collection.

AI-Generated: Uses GitHub Copilot

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
---
 lib/bb/cooker.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/bb/cooker.py b/lib/bb/cooker.py
index 4b6ba3196..108551a60 100644
--- a/lib/bb/cooker.py
+++ b/lib/bb/cooker.py
@@ -1322,8 +1322,10 @@ You can also remove the BB_HASHSERVE_UPSTREAM setting, but this may result in si
         if bf.startswith("/") or bf.startswith("../"):
             bf = os.path.abspath(bf)
 
-        collections = {mc: CookerCollectFiles(self.bbfile_config_priorities, mc)}
-        filelist, masked, searchdirs = collections[mc].collect_bbfiles(self.databuilder.mcdata[mc], self.databuilder.mcdata[mc])
+        # The only place the "bitbake -b" path fills in the bbappends which
+        # buildFileInternal() then reads back from self.collections[mc].
+        self.collections[mc] = CookerCollectFiles(self.bbfile_config_priorities, mc)
+        filelist, masked, searchdirs = self.collections[mc].collect_bbfiles(self.databuilder.mcdata[mc], self.databuilder.mcdata[mc])
         try:
             os.stat(bf)
             bf = os.path.abspath(bf)
-- 
2.55.0

Re: [bitbake-devel] [PATCH 1/7] cooker: fix bitbake -b silently ignoring bbappends

[Richard Purdie]

On Sat, 2026-08-15 at 15:46 +0200, Adrian Freihofer via lists.openembedded.org wrote:
> From: Adrian Freihofer <adrian.freihofer@siemens.com>
> 
> "bitbake -b <recipe.bb>" builds the recipe without applying any of its
> .bbappend files.
> 
> buildFileInternal() resolves appends via
> self.collections[mc].get_file_appends(fn), but self.collections[mc] is
> only ever filled in by collect_bbfiles(), called from updateCache() -
> a path -b deliberately skips. matchFiles(), the one -b-path function
> that does call collect_bbfiles(), built a fresh CookerCollectFiles into
> a throwaway local instead of self.collections[mc], so the append list
> stayed empty (or, on a memory-resident server, stale from the last
> full parse - e.g. missing a devtool/externalsrc workspace .bbappend
> added since). Nothing warns that the built metadata differs from disk.
> 
> Make matchFiles() refresh self.collections[mc] itself so the later
> append lookup for the same fn sees the same fresh collection.
> 
> AI-Generated: Uses GitHub Copilot
> 
> Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
> ---
>  lib/bb/cooker.py | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)

I've not checked but doesn't this only add limited collections data so
whilst it fixes -b, it potentially corrupts the cache for the non -b
cases?

This is definitely something we should fix, I just want to make sure
this doesn't corrupt something else. I suspect it deliberately doesn't
write to self...

Cheers,

Richard

[PATCH 2/7] tests/cooker: add a bitbake -b bbappend test

[AdrianF]

From: Adrian Freihofer <adrian.freihofer@siemens.com>

The buildfile ("bitbake -b") mode had no test coverage at all. Add
BuildFileTest.test_buildfile_applies_bbappends(), which writes a recipe
plus a matching .bbappend to a temporary directory, points EXTRA_BBFILES
at both and runs a task recording a variable the bbappend overrides.

It uses the parse-tests BBPATH because that bitbake.conf already globs
*.bbappend. Without the preceding fix the recipe's own default is
recorded, i.e. -b dropped the bbappend silently.

If the previous commit is reverted, this test faila with:

    AssertionError: 'no-bbappend' != 'bbappend-applied'
    - no-bbappend
    + bbappend-applied

AI-Generated: Uses GitHub Copilot

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
---
 lib/bb/tests/cooker.py | 52 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/lib/bb/tests/cooker.py b/lib/bb/tests/cooker.py
index 9e524ae34..76ec65540 100644
--- a/lib/bb/tests/cooker.py
+++ b/lib/bb/tests/cooker.py
@@ -8,6 +8,8 @@
 
 import unittest
 import os
+import subprocess
+import tempfile
 import bb, bb.cooker
 import re
 import logging
@@ -69,3 +71,53 @@ class CookerTest(unittest.TestCase):
         expected = []
 
         self.assertEqual(log_handler.logdata, expected)
+
+
+class BuildFileTest(unittest.TestCase):
+    """Tests for the buildfile ("bitbake -b") mode."""
+
+    # parse-tests BBPATH: minimal bitbake.conf whose BBFILES honours
+    # EXTRA_BBFILES and already includes *.bbappend
+    _parsetests = os.path.realpath(os.path.join(os.path.dirname(__file__), "parse-tests"))
+
+    recipe = """\
+MARKER ??= "no-bbappend"
+python do_marker() {
+    with open(d.expand("${TOPDIR}/marker.log"), "w") as f:
+        f.write(d.getVar("MARKER"))
+}
+addtask marker
+"""
+
+    bbappend = 'MARKER = "bbappend-applied"\n'
+
+    def test_buildfile_applies_bbappends(self):
+        """bitbake -b must build the recipe with its bbappends applied.
+
+        buildFileInternal() looks the appends up in self.collections[mc], which
+        on the -b path is only ever populated by matchFiles().
+        """
+        with tempfile.TemporaryDirectory(prefix="buildfilerecipes") as recipes, \
+             tempfile.TemporaryDirectory(prefix="buildfiletest") as builddir:
+            recipe = os.path.join(recipes, "appendtest.bb")
+            with open(recipe, "w") as f:
+                f.write(self.recipe)
+            with open(os.path.join(recipes, "appendtest.bbappend"), "w") as f:
+                f.write(self.bbappend)
+
+            env = os.environ.copy()
+            env["BBPATH"] = self._parsetests
+            env["BB_ENV_PASSTHROUGH_ADDITIONS"] = "TOPDIR EXTRA_BBFILES"
+            env["TOPDIR"] = builddir
+            env["EXTRA_BBFILES"] = "%s/*.bb %s/*.bbappend" % (recipes, recipes)
+
+            cmd = ["bitbake", "-b", recipe, "-c", "marker"]
+            try:
+                subprocess.check_output(cmd, env=env, stderr=subprocess.STDOUT,
+                                        universal_newlines=True, cwd=builddir)
+            except subprocess.CalledProcessError as e:
+                self.fail("Command %s failed with %s" % (cmd, e.output))
+
+            with open(os.path.join(builddir, "marker.log")) as f:
+                self.assertEqual(f.read(), "bbappend-applied",
+                                 "bitbake -b did not apply the recipe's bbappend")
-- 
2.55.0

[PATCH 3/7] command: fix setConfig coercing bool config values to truthy strings

[AdrianF]

From: Adrian Freihofer <adrian.freihofer@siemens.com>

CommandsSync.setConfig() unconditionally stringified the value with
str(params[1]) before assigning it to the cooker configuration
attribute. This breaks boolean values, since str(True) and str(False)
are both non-empty and therefore both truthy.

That makes it impossible to turn a boolean option back off over the
command interface: setting 'force' to False leaves configuration.force
holding the truthy string "False", so it stays effectively enabled for
the rest of the bitbake server session and spuriously invalidates tasks
in later, unrelated builds sharing that session.

Preserve the caller's original type instead of coercing to str. The
only other caller (cookerdata.py) already passes a plain string, so
this does not change behavior for it.

AI-Generated: Uses GitHub Copilot

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
---
 lib/bb/command.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/bb/command.py b/lib/bb/command.py
index 59a979ee9..b57c5d4a3 100644
--- a/lib/bb/command.py
+++ b/lib/bb/command.py
@@ -228,7 +228,7 @@ class CommandsSync:
         Set the value of variable in configuration
         """
         varname = params[0]
-        value = str(params[1])
+        value = params[1]
         setattr(command.cooker.configuration, varname, value)
 
     def enableDataTracking(self, command, params):
-- 
2.55.0

[PATCH 4/7] cooker: add a buildFile mode that runs a single task

[AdrianF]

From: Adrian Freihofer <adrian.freihofer@siemens.com>

devtool ide-sdk lets the IDE build directly (e.g. via cmake or meson,
outside of bitbake). do_install still needs bitbake: it needs pseudo,
and it usually does more than the underlying build tool's own install
step (e.g. `cmake --build --target install`) would - packaging-related
fixups the recipe or its classes add on top. It must run as only that
one already-prepared task against the source the developer just edited
- not the whole recipe: predecessors, if they ran again, would
rebuild/overwrite the very output the caller is about to inspect or has
already staged.

Add a taskonly argument to buildFileInternal(), plumbed through the
buildFile command, that also clears the intra-recipe task parents,
leaving the requested task as the runqueue's only entry. Default
unchanged, so "bitbake -b" behaviour is unaffected.

Note that for example:
- buildFileInternal() cannot do this: it drops external dependencies but
  keeps intra-recipe task ordering ('addtask X after Y'), so requesting
  do_install on an unbuilt recipe still pulls in do_fetch, do_unpack,
  do_patch, do_prepare_recipe_sysroot, do_configure and do_compile.
  That's the right default for "bitbake -b", but not here.
- --runonly can't express this either: mark_active() ignores its depth
  argument and recurses over depends, so the whole chain stays active
  regardless.

AI-Generated: Uses GitHub Copilot

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
---
 lib/bb/command.py | 6 +++++-
 lib/bb/cooker.py  | 8 +++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/lib/bb/command.py b/lib/bb/command.py
index b57c5d4a3..1b16884fa 100644
--- a/lib/bb/command.py
+++ b/lib/bb/command.py
@@ -622,9 +622,13 @@ class CommandsAsync:
             internal = params[2]
         else:
             internal = False
+        if len(params) > 3:
+            taskonly = params[3]
+        else:
+            taskonly = False
 
         if internal:
-            command.cooker.buildFileInternal(bfile, task, fireevents=False, quietlog=True)
+            command.cooker.buildFileInternal(bfile, task, fireevents=False, quietlog=True, taskonly=taskonly)
         else:
             command.cooker.buildFile(bfile, task)
     buildFile.needcache = False
diff --git a/lib/bb/cooker.py b/lib/bb/cooker.py
index 108551a60..0321478d3 100644
--- a/lib/bb/cooker.py
+++ b/lib/bb/cooker.py
@@ -1368,7 +1368,7 @@ You can also remove the BB_HASHSERVE_UPSTREAM setting, but this may result in si
 
         self.buildFileInternal(buildfile, task)
 
-    def buildFileInternal(self, buildfile, task, fireevents=True, quietlog=False):
+    def buildFileInternal(self, buildfile, task, fireevents=True, quietlog=False, taskonly=False):
         """
         Build the file matching regexp buildfile
         """
@@ -1418,6 +1418,12 @@ You can also remove the BB_HASHSERVE_UPSTREAM setting, but this may result in si
         self.recipecaches[mc].rundeps[fn] = defaultdict(list)
         self.recipecaches[mc].runrecs[fn] = defaultdict(list)
 
+        if taskonly:
+            # Drop the intra-recipe task ordering too ('addtask X after Y'), so
+            # that task is the only entry left in the runqueue.
+            task_deps = self.recipecaches[mc].task_deps[fn]
+            task_deps['parents'] = {t: [] for t in task_deps['tasks']}
+
         bb.parse.siggen.setup_datacache(self.recipecaches)
 
         # Invalidate task for target if force mode active
-- 
2.55.0

[PATCH 5/7] tinfoil: add a prepared task runner

[AdrianF]

From: Adrian Freihofer <adrian.freihofer@siemens.com>

Add run_prepared_task() to execute a single recipe task, and nothing
else. No dependencies are resolved and no other task of the recipe is
run, so everything the task consumes must already be in place. It uses
BitBake's normal worker path, retaining the standard dispatch for shell
and Python task bodies as well as fakeroot setup.

devtool ide-sdk needs to rerun an already prepared BitBake task after a
developer changes its source. A normal target build would create a
runqueue and resolve dependencies again, and even "bitbake -b" would
re-run the task's intra-recipe predecessors. That is wrong for this
workflow: the developer intentionally wants to rerun only the prepared
task against content the IDE has just produced. Expose the single-task
worker path so devtool can reuse it instead of maintaining a separate
task executor and pseudo-session setup.

AI-Generated: Uses GitHub Copilot

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
---
 lib/bb/tinfoil.py | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/lib/bb/tinfoil.py b/lib/bb/tinfoil.py
index 634d7796f..42385c879 100644
--- a/lib/bb/tinfoil.py
+++ b/lib/bb/tinfoil.py
@@ -826,20 +826,39 @@ class Tinfoil:
             else:
                 return None
 
-    def build_file(self, buildfile, task, internal=True):
+    def build_file(self, buildfile, task, internal=True, taskonly=False):
         """
         Runs the specified task for just a single recipe (i.e. no dependencies).
         This is equivalent to bitbake -b, except with the default internal=True
         no warning about dependencies will be produced, normal info messages
         from the runqueue will be silenced and BuildInit, BuildStarted and
         BuildCompleted events will not be fired.
+        With taskonly=True the recipe's own task ordering is dropped as well, so
+        only the requested task runs.
         """
-        return self.run_command('buildFile', buildfile, task, internal)
+        return self.run_command('buildFile', buildfile, task, internal, taskonly)
 
     @wait_for
     def build_file_sync(self, *args):
         self.build_file(*args)
 
+    def run_prepared_task(self, recipe, task):
+        """Run *task* for one parsed recipe, and nothing else.
+
+        No dependencies are resolved and no other task of the recipe is run,
+        so everything the task consumes must already be in place. The task
+        runs through the normal BitBake worker path, including fakeroot setup
+        and dispatch of shell or Python task bodies.
+
+        The task is forced to execute rather than being skipped as up to date.
+        Returns False if the task failed.
+        """
+        self.run_command('setConfig', 'force', True)
+        try:
+            return self.build_file_sync(self.get_recipe_file(recipe), task, True, True)
+        finally:
+            self.run_command('setConfig', 'force', False)
+
     def build_targets(self, targets, task=None, handle_events=True, extra_events=None, event_callback=None):
         """
         Builds the specified targets. This is equivalent to a normal invocation
-- 
2.55.0

[PATCH 6/7] tests/cooker: add TinfoilTests for run_prepared_task

[AdrianF]

From: Adrian Freihofer <adrian.freihofer@siemens.com>

Add TinfoilTests covering 'tinfoil: add a prepared task runner'. Each
test spawns a subprocess to isolate tinfoil's server lifecycle.

TestEquivHash is needed because the noop siggen's invalidate_task()
removes the base stamp path instead of the task-specific one, making
force=True a no-op otherwise.

Lives in cooker.py rather than runqueue.py since it tests Tinfoil's
Python API, not CLI-level runqueue behaviour.

AI-Generated: Uses GitHub Copilot

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
---
 lib/bb/tests/cooker.py | 159 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 159 insertions(+)

diff --git a/lib/bb/tests/cooker.py b/lib/bb/tests/cooker.py
index 76ec65540..a08843e98 100644
--- a/lib/bb/tests/cooker.py
+++ b/lib/bb/tests/cooker.py
@@ -9,12 +9,171 @@
 import unittest
 import os
 import subprocess
+import sys
 import tempfile
+import time
 import bb, bb.cooker
 import re
 import logging
 
 # Cooker tests
+
+
+class TinfoilTests(unittest.TestCase):
+    """Tests for the Tinfoil API that require a running bitbake server."""
+
+    # Library directory containing bb.tinfoil
+    _bblib = os.path.realpath(os.path.join(os.path.dirname(__file__), '..', '..'))
+    # runqueue-tests BBPATH (provides the simple a1/b1/... test recipes)
+    _runqueuetests = os.path.realpath(os.path.join(os.path.dirname(__file__), 'runqueue-tests'))
+
+    failing_recipe = """\
+python do_install() {
+    bb.fatal("deliberate failure")
+}
+addtask install
+"""
+
+    def _make_env(self, builddir, extra=None):
+        env = os.environ.copy()
+        env['PYTHONPATH'] = self._bblib + (':' + env['PYTHONPATH'] if 'PYTHONPATH' in env else '')
+        env['BBPATH'] = self._runqueuetests
+        env['BB_ENV_PASSTHROUGH_ADDITIONS'] = 'SSTATEVALID SLOWTASKS TOPDIR BB_HASHSERVE BB_SIGNATURE_HANDLER EXTRA_BBFILES'
+        env['SSTATEVALID'] = ''
+        env['SLOWTASKS'] = ''
+        env['TOPDIR'] = builddir
+        # TestEquivHash creates taint files so that force=True actually
+        # invalidates the task hash; the default noop siggen cannot do this.
+        env['BB_HASHSERVE'] = 'auto'
+        env['BB_SIGNATURE_HANDLER'] = 'TestEquivHash'
+        if extra:
+            env.update(extra)
+        return env
+
+    def _run_script(self, builddir, script, extra=None):
+        """Run script in a subprocess to isolate tinfoil's server lifecycle."""
+        proc = subprocess.run(
+            [sys.executable, '-c', script],
+            env=self._make_env(builddir, extra),
+            stdout=subprocess.PIPE,
+            stderr=subprocess.STDOUT,
+            universal_newlines=True,
+            cwd=builddir,
+        )
+        if proc.returncode:
+            self.fail('tinfoil script failed: %s' % proc.stdout)
+        return proc.stdout
+
+    def _read_tasklog(self, builddir, cleanup=True):
+        tasklog = os.path.join(builddir, 'task.log')
+        tasks = []
+        if os.path.exists(tasklog):
+            with open(tasklog) as f:
+                tasks = [line.rstrip() for line in f]
+            if cleanup:
+                os.remove(tasklog)
+        return tasks
+
+    def _shutdown(self, builddir):
+        """Wait for the bitbake server and hashserv to release builddir.
+
+        Must run before the caller's TemporaryDirectory is removed, so it
+        cannot be a tearDown().
+        """
+        deadline = time.monotonic() + 30
+        while time.monotonic() < deadline:
+            if not any(os.path.exists(os.path.join(builddir, p))
+                       for p in ('hashserve.sock', 'bitbake.lock')):
+                return
+            time.sleep(0.5)
+
+    def test_run_prepared_task(self):
+        """tinfoil.run_prepared_task() reruns one task without resolving deps.
+
+        Uses do_install since that's the real devtool ide-sdk scenario: it
+        needs pseudo and so must run via bitbake, unlike do_compile which the
+        IDE invokes directly (e.g. via cmake/meson).
+
+        Builds a1 completely so all stamps/hashes are valid, then calls
+        run_prepared_task('a1', 'install') through the Python API and verifies
+        that only do_install re-runs while its intra-recipe predecessors
+        (fetch, unpack, patch, prepare_recipe_sysroot, configure, compile) are
+        skipped.
+        """
+        # The script runs inside a subprocess so that tinfoil's server
+        # lifecycle and environment modifications are isolated.
+        script = """
+import os, sys
+import bb.tinfoil
+
+builddir = os.environ['TOPDIR']
+tasklog  = os.path.join(builddir, 'task.log')
+
+with bb.tinfoil.Tinfoil() as tinfoil:
+    tinfoil.prepare(quiet=2)
+    # Full build so all stamps and hashes are valid.
+    tinfoil.build_targets(['a1'])
+    # Clear the log so only the run_prepared_task() entries are counted.
+    if os.path.exists(tasklog):
+        os.remove(tasklog)
+    # run_prepared_task() sets force=True (taint) and calls build_file_sync
+    # with the recipe file resolved via get_recipe_file(), bypassing the
+    # normal runqueue dependency resolver.
+    tinfoil.run_prepared_task('a1', 'install')
+"""
+        with tempfile.TemporaryDirectory(prefix='tinfoiltest') as builddir:
+            try:
+                self._run_script(builddir, script)
+
+                tasks = self._read_tasklog(builddir)
+                self.assertEqual(tasks, ['a1:install'],
+                                 'run_prepared_task should rerun only install, got: %s' % tasks)
+            finally:
+                self._shutdown(builddir)
+
+    def test_run_prepared_task_unbuilt(self):
+        """run_prepared_task() runs the task and nothing else.
+
+        The recipe was never built, so if any dependency task were still in
+        the runqueue it would have to run here.
+        """
+        script = """
+import bb.tinfoil
+
+with bb.tinfoil.Tinfoil() as tinfoil:
+    tinfoil.prepare(quiet=2)
+    assert tinfoil.run_prepared_task('a1', 'install') is True
+"""
+        with tempfile.TemporaryDirectory(prefix='tinfoiltest') as builddir:
+            try:
+                self._run_script(builddir, script)
+
+                tasks = self._read_tasklog(builddir)
+                self.assertEqual(tasks, ['a1:install'],
+                                 'run_prepared_task should run no dependency task, got: %s' % tasks)
+            finally:
+                self._shutdown(builddir)
+
+    def test_run_prepared_task_failure(self):
+        """A failing task makes run_prepared_task() return False, not raise."""
+        script = """
+import bb.tinfoil
+
+with bb.tinfoil.Tinfoil() as tinfoil:
+    tinfoil.prepare(quiet=2)
+    assert tinfoil.run_prepared_task('failer', 'install') is False
+"""
+        with tempfile.TemporaryDirectory(prefix='tinfoilrecipes') as recipes, \
+             tempfile.TemporaryDirectory(prefix='tinfoiltest') as builddir:
+            with open(os.path.join(recipes, 'failer.bb'), 'w') as f:
+                f.write(self.failing_recipe)
+            try:
+                self._run_script(builddir, script,
+                                 {'EXTRA_BBFILES': '%s/*.bb' % recipes})
+            finally:
+                self._shutdown(builddir)
+
+
 class CookerTest(unittest.TestCase):
     def setUp(self):
         # At least one variable needs to be set
-- 
2.55.0

[PATCH 7/7] parse/ast: skip empty BBPATH segments in include_all

[AdrianF]

From: Adrian Freihofer <adrian.freihofer@siemens.com>

BBPATH can end up with an empty ":"-split segment when different
layer.conf files mix the "${LAYERDIR}:" (prepend) and ":${LAYERDIR}"
(append) idioms, e.g. openembedded-core's own meta/conf/layer.conf uses
"BBPATH .= \":${LAYERDIR}\"" while every other layer.conf in a typical
poky setup uses "BBPATH =. \"${LAYERDIR}:\"". Combined, this produces a
literal "::" in the final value.

IncludeAllNode.eval() iterates every BBPATH segment and calls
os.path.join(path, s) to build the candidate file to include. For an
empty segment, os.path.join("", s) returns s unchanged, i.e. a
relative path instead of an absolute one. include_single_file() then
takes its relative-path branch, which does its own independent search
across the whole BBPATH and marks every path it tries (found or not)
as a dependency via mark_dependency(), as a side effect of resolving
that one (bogus) relative candidate.

If that side search happens to try the real target file before this
loop's own iteration for its actual BBPATH entry runs,
check_dependency() reports it as already seen and include_single_file()
logs a spurious "Duplicate inclusion" warning for it, even though the
file is only ever included once. This is how e.g. oe-core's
"include_all conf/distro/include/maintainers.inc" in defaultsetup.conf
ends up warning about itself on every parse.

Skip empty segments so an empty BBPATH entry cannot trigger this
false-positive dependency marking.

 AI-Generated: Uses GitHub Copilot

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
---
 lib/bb/parse/ast.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/bb/parse/ast.py b/lib/bb/parse/ast.py
index a372b3534..866ab8ed1 100644
--- a/lib/bb/parse/ast.py
+++ b/lib/bb/parse/ast.py
@@ -56,6 +56,10 @@ class IncludeAllNode(AstNode):
         logger.debug2("CONF %s:%s: including %s", self.filename, self.lineno, s)
 
         for path in data.getVar("BBPATH").split(":"):
+            # Skip empty segments (e.g. from a stray "::" if some layer.conf
+            # uses ".= \":${LAYERDIR}\"" instead of "=. \"${LAYERDIR}:\"").
+            if not path:
+                continue
             bb.parse.ConfHandler.include(self.filename, os.path.join(path, s), self.lineno, data, False)
 
 class ExportNode(AstNode):
-- 
2.55.0