"FileNotFoundError: [Errno 2] No such file or directory:" when trying to commit metadata.xml only change with new ebuild pending

[thesamesam]

I tried to bump strace by copying the old ebuild to the new one, but decided to update metadata.xml with a new remote-id first. With the new strace-5.19.ebuild sitting locally (but not staged), when trying to commit the new metadata.xml, I get the following backtrace:

$ pkgdev commit
dev-util/strace
  RedundantVersion: version 5.18: slot(0) keywords are overshadowed by version: 5.19
  StableRequest: version 5.18: slot(0) no change in 54 days for unstable keywords: [ ~amd64, ~arm, ~arm64, ~hppa, ~ppc, ~ppc64, ~sparc, ~x86 ]
Traceback (most recent call last):
  File "/usr/lib/python-exec/python3.11/pkgdev", line 4, in <module>
    scripts.run(basename(__file__))
  File "/usr/lib/python3.11/site-packages/pkgdev/scripts/__init__.py", line 38, in run
    sys.exit(tool())
             ^^^^^^
  File "/usr/lib/python3.11/site-packages/snakeoil/cli/tool.py", line 79, in __call__
    ret = self.main()
          ^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/pkgdev/cli.py", line 22, in main
    return super().main()
           ^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/snakeoil/cli/tool.py", line 185, in main
    self.handle_exec_exception(e)
  File "/usr/lib/python3.11/site-packages/snakeoil/cli/tool.py", line 170, in main
    exitstatus = func(self.options, self.out, self.err)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/pkgdev/scripts/pkgdev_commit.py", line 814, in _commit
    args = determine_msg_args(options, changes)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/pkgdev/scripts/pkgdev_commit.py", line 689, in determine_msg_args
    message.append(changes.prefix + changes.summary)
                                    ^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/snakeoil/klass.py", line 176, in __get__
    obj = self.function(instance)
          ^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/pkgdev/scripts/pkgdev_commit.py", line 592, in summary
    return str(MetadataSummary(self._options, self.pkg_changes))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/pkgdev/scripts/pkgdev_commit.py", line 246, in __str__
    if s := self.status_funcs[statuses](self):
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/pkgdev/scripts/pkgdev_commit.py", line 269, in modify
    old_pkg = self.old_repo.match(atom)[0]
              ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/pkgcore/repository/prototype.py", line 232, in match
    return list(self.itermatch(atom, **kwds))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/pkgcore/repository/prototype.py", line 300, in _internal_match
    for pkg in self._internal_gen_candidates(candidates, **kwargs):
  File "/usr/lib/python3.11/site-packages/pkgcore/repository/prototype.py", line 297, in _internal_gen_candidates
    yield from sorter(pkg_filter(pkgs))
  File "/usr/lib/python3.11/site-packages/pkgcore/ebuild/repository.py", line 495, in _pkg_filter
    if not pkg.is_supported:
           ^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/snakeoil/klass.py", line 355, in __call__
    return self.getter(obj)
           ^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/pkgcore/package/base.py", line 97, in dynamic_getattr_dict
    val = functor(self)
          ^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/pkgcore/ebuild/ebuild_src.py", line 246, in eapi
    i = fileutils.readlines_utf8(ebuild.path)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/snakeoil/_fileutils.py", line 78, in native_readlines
    handle = open(mypath, mode, encoding=encoding)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: '/tmp/tmpgortpowf/dev-util/strace/strace-5.19.ebuild'

$ cat ~/.config/pkgdev/pkgdev.conf
[DEFAULT]
commit.scan = true
commit.signoff = true
push.ask = true
showkw.format = simple

[gentoo]
commit.signoff = true

$ pkgdev --version
pkgdev 0.2.1-4-g98cfd69 -- Tue, 9 Aug 2022 21:59:07 +0100
$ pkgcheck --version
pkgcheck 0.10.13-14-g2a73cc6 -- Tue, 9 Aug 2022 21:57:35 +0100
$ git --version
git version 2.37.2

Steps to reproduce:

1. Checkout a0902118f3bc304e303f0b059ce769275d906e2f~1 in gentoo.git (it's the commit before the strace-5.19 bump)
2. cp strace-5.18.ebuild strace-5.19.ebuild && pkgdev manifest
3. Apply this diff to metadata.xml:

diff --git a/dev-util/strace/metadata.xml b/dev-util/strace/metadata.xml
index cb7988b3fb88..50e8e39652ba 100644
--- a/dev-util/strace/metadata.xml
+++ b/dev-util/strace/metadata.xml
@@ -1,23 +1,24 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
 <pkgmetadata>
-  <maintainer type="project">
-    <email>base-system@gentoo.org</email>
-    <name>Gentoo Base System</name>
-  </maintainer>
-  <use>
-    <flag name="aio">
-      Enable <pkg>dev-libs/libaio</pkg> support for tracing Asynchronous I/O operations
-    </flag>
-    <flag name="unwind">
-      Enable stack backtraces (-k flag) via <pkg>sys-libs/libunwind</pkg>
-    </flag>
-    <flag name="elfutils">
-      Enable stack backtraces (-k flag) via <pkg>dev-libs/elfutils</pkg>
-    </flag>
-  </use>
-  <upstream>
-    <remote-id type="github">strace/strace</remote-id>
-    <remote-id type="sourceforge">strace</remote-id>
-  </upstream>
+       <maintainer type="project">
+               <email>base-system@gentoo.org</email>
+               <name>Gentoo Base System</name>
+       </maintainer>
+       <use>
+               <flag name="aio">
+                       Enable <pkg>dev-libs/libaio</pkg> support for tracing Asynchronous I/O operations
+               </flag>
+               <flag name="unwind">
+                       Enable stack backtraces (-k flag) via <pkg>sys-libs/libunwind</pkg>
+               </flag>
+               <flag name="elfutils">
+                       Enable stack backtraces (-k flag) via <pkg>dev-libs/elfutils</pkg>
+               </flag>
+       </use>
+       <upstream>
+               <remote-id type="github">strace/strace</remote-id>
+               <remote-id type="gitlab">strace/strace</remote-id>
+               <remote-id type="sourceforge">strace</remote-id>
+       </upstream>
 </pkgmetadata>

4. git add metadata.xml && pkgdev commit

[tillschaefer]

I can confirm the issue. I would like to add that modified files are working without an issue, but as soon an untracked file is present the commit fails.